eventespresso / event-espresso-core

core/helpers/EEH_Line_Item.helper.php

Indentation +2053 added lines, -2053 removed lines

@@ -22,2057 +22,2057 @@
 class EEH_Line_Item
 {
 
-    /**
-     * Adds a simple item (unrelated to any other model object) to the provided PARENT line item.
-     * Does NOT automatically re-calculate the line item totals or update the related transaction.
-     * You should call recalculate_total_including_taxes() on the grant total line item after this
-     * to update the subtotals, and EE_Registration_Processor::calculate_reg_final_prices_per_line_item()
-     * to keep the registration final prices in-sync with the transaction's total.
-     *
-     * @param EE_Line_Item $parent_line_item
-     * @param string       $name
-     * @param float        $unit_price
-     * @param string       $description
-     * @param int          $quantity
-     * @param boolean      $taxable
-     * @param boolean      $code if set to a value, ensures there is only one line item with that code
-     * @return boolean success
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     */
-    public static function add_unrelated_item(
-        EE_Line_Item $parent_line_item,
-        $name,
-        $unit_price,
-        $description = '',
-        $quantity = 1,
-        $taxable = false,
-        $code = null
-    ) {
-        $items_subtotal = self::get_pre_tax_subtotal($parent_line_item);
-        $line_item = EE_Line_Item::new_instance(array(
-            'LIN_name'       => $name,
-            'LIN_desc'       => $description,
-            'LIN_unit_price' => $unit_price,
-            'LIN_quantity'   => $quantity,
-            'LIN_percent'    => null,
-            'LIN_is_taxable' => $taxable,
-            'LIN_order'      => $items_subtotal instanceof EE_Line_Item ? count($items_subtotal->children()) : 0,
-            'LIN_total'      => (float) $unit_price * (int) $quantity,
-            'LIN_type'       => EEM_Line_Item::type_line_item,
-            'LIN_code'       => $code,
-        ));
-        $line_item = apply_filters(
-            'FHEE__EEH_Line_Item__add_unrelated_item__line_item',
-            $line_item,
-            $parent_line_item
-        );
-        return self::add_item($parent_line_item, $line_item);
-    }
-
-
-    /**
-     * Adds a simple item ( unrelated to any other model object) to the total line item,
-     * in the correct spot in the line item tree. Does not automatically
-     * re-calculate the line item totals, nor update the related transaction, nor upgrade the transaction's
-     * registrations' final prices (which should probably change because of this).
-     * You should call recalculate_total_including_taxes() on the grand total line item, then
-     * update the transaction's total, and EE_Registration_Processor::update_registration_final_prices()
-     * after using this, to keep the registration final prices in-sync with the transaction's total.
-     *
-     * @param EE_Line_Item $parent_line_item
-     * @param string       $name
-     * @param float        $percentage_amount
-     * @param string       $description
-     * @param boolean      $taxable
-     * @return boolean success
-     * @throws EE_Error
-     */
-    public static function add_percentage_based_item(
-        EE_Line_Item $parent_line_item,
-        $name,
-        $percentage_amount,
-        $description = '',
-        $taxable = false
-    ) {
-        $line_item = EE_Line_Item::new_instance(array(
-            'LIN_name'       => $name,
-            'LIN_desc'       => $description,
-            'LIN_unit_price' => 0,
-            'LIN_percent'    => $percentage_amount,
-            'LIN_quantity'   => 1,
-            'LIN_is_taxable' => $taxable,
-            'LIN_total'      => (float) ($percentage_amount * ($parent_line_item->total() / 100)),
-            'LIN_type'       => EEM_Line_Item::type_line_item,
-            'LIN_parent'     => $parent_line_item->ID(),
-        ));
-        $line_item = apply_filters(
-            'FHEE__EEH_Line_Item__add_percentage_based_item__line_item',
-            $line_item
-        );
-        return $parent_line_item->add_child_line_item($line_item, false);
-    }
-
-
-    /**
-     * Returns the new line item created by adding a purchase of the ticket
-     * ensures that ticket line item is saved, and that cart total has been recalculated.
-     * If this ticket has already been purchased, just increments its count.
-     * Automatically re-calculates the line item totals and updates the related transaction. But
-     * DOES NOT automatically upgrade the transaction's registrations' final prices (which
-     * should probably change because of this).
-     * You should call EE_Registration_Processor::calculate_reg_final_prices_per_line_item()
-     * after using this, to keep the registration final prices in-sync with the transaction's total.
-     *
-     * @param EE_Line_Item $total_line_item grand total line item of type EEM_Line_Item::type_total
-     * @param EE_Ticket    $ticket
-     * @param int          $qty
-     * @return EE_Line_Item
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     */
-    public static function add_ticket_purchase(EE_Line_Item $total_line_item, EE_Ticket $ticket, $qty = 1)
-    {
-        if (! $total_line_item instanceof EE_Line_Item || ! $total_line_item->is_total()) {
-            throw new EE_Error(
-                sprintf(
-                    esc_html__(
-                        'A valid line item total is required in order to add tickets. A line item of type "%s" was passed.',
-                        'event_espresso'
-                    ),
-                    $ticket->ID(),
-                    $total_line_item->ID()
-                )
-            );
-        }
-        // either increment the qty for an existing ticket
-        $line_item = self::increment_ticket_qty_if_already_in_cart($total_line_item, $ticket, $qty);
-        // or add a new one
-        if (! $line_item instanceof EE_Line_Item) {
-            $line_item = self::create_ticket_line_item($total_line_item, $ticket, $qty);
-        }
-        $total_line_item->recalculate_total_including_taxes();
-        return $line_item;
-    }
-
-
-    /**
-     * Returns the new line item created by adding a purchase of the ticket
-     *
-     * @param EE_Line_Item $total_line_item
-     * @param EE_Ticket    $ticket
-     * @param int          $qty
-     * @return EE_Line_Item
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     */
-    public static function increment_ticket_qty_if_already_in_cart(
-        EE_Line_Item $total_line_item,
-        EE_Ticket $ticket,
-        $qty = 1
-    ) {
-        $line_item = null;
-        if ($total_line_item instanceof EE_Line_Item && $total_line_item->is_total()) {
-            $ticket_line_items = EEH_Line_Item::get_ticket_line_items($total_line_item);
-            foreach ((array) $ticket_line_items as $ticket_line_item) {
-                if (
-                    $ticket_line_item instanceof EE_Line_Item
-                    && (int) $ticket_line_item->OBJ_ID() === (int) $ticket->ID()
-                ) {
-                    $line_item = $ticket_line_item;
-                    break;
-                }
-            }
-        }
-        if ($line_item instanceof EE_Line_Item) {
-            EEH_Line_Item::increment_quantity($line_item, $qty);
-            return $line_item;
-        }
-        return null;
-    }
-
-
-    /**
-     * Increments the line item and all its children's quantity by $qty (but percent line items are unaffected).
-     * Does NOT save or recalculate other line items totals
-     *
-     * @param EE_Line_Item $line_item
-     * @param int          $qty
-     * @return void
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     */
-    public static function increment_quantity(EE_Line_Item $line_item, $qty = 1)
-    {
-        if (! $line_item->is_percent()) {
-            $qty += $line_item->quantity();
-            $line_item->set_quantity($qty);
-            $line_item->set_total($line_item->unit_price() * $qty);
-            $line_item->save();
-        }
-        foreach ($line_item->children() as $child) {
-            if ($child->is_sub_line_item()) {
-                EEH_Line_Item::update_quantity($child, $qty);
-            }
-        }
-    }
-
-
-    /**
-     * Decrements the line item and all its children's quantity by $qty (but percent line items are unaffected).
-     * Does NOT save or recalculate other line items totals
-     *
-     * @param EE_Line_Item $line_item
-     * @param int          $qty
-     * @return void
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     */
-    public static function decrement_quantity(EE_Line_Item $line_item, $qty = 1)
-    {
-        if (! $line_item->is_percent()) {
-            $qty = $line_item->quantity() - $qty;
-            $qty = max($qty, 0);
-            $line_item->set_quantity($qty);
-            $line_item->set_total($line_item->unit_price() * $qty);
-            $line_item->save();
-        }
-        foreach ($line_item->children() as $child) {
-            if ($child->is_sub_line_item()) {
-                EEH_Line_Item::update_quantity($child, $qty);
-            }
-        }
-    }
-
-
-    /**
-     * Updates the line item and its children's quantities to the specified number.
-     * Does NOT save them or recalculate totals.
-     *
-     * @param EE_Line_Item $line_item
-     * @param int          $new_quantity
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     */
-    public static function update_quantity(EE_Line_Item $line_item, $new_quantity)
-    {
-        if (! $line_item->is_percent()) {
-            $line_item->set_quantity($new_quantity);
-            $line_item->set_total($line_item->unit_price() * $new_quantity);
-            $line_item->save();
-        }
-        foreach ($line_item->children() as $child) {
-            if ($child->is_sub_line_item()) {
-                EEH_Line_Item::update_quantity($child, $new_quantity);
-            }
-        }
-    }
-
-
-    /**
-     * Returns the new line item created by adding a purchase of the ticket
-     *
-     * @param EE_Line_Item $total_line_item of type EEM_Line_Item::type_total
-     * @param EE_Ticket    $ticket
-     * @param int          $qty
-     * @return EE_Line_Item
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     */
-    public static function create_ticket_line_item(EE_Line_Item $total_line_item, EE_Ticket $ticket, $qty = 1)
-    {
-        $datetimes = $ticket->datetimes();
-        $first_datetime = reset($datetimes);
-        $first_datetime_name = esc_html__('Event', 'event_espresso');
-        if ($first_datetime instanceof EE_Datetime && $first_datetime->event() instanceof EE_Event) {
-            $first_datetime_name = $first_datetime->event()->name();
-        }
-        $event = sprintf(_x('(For %1$s)', '(For Event Name)', 'event_espresso'), $first_datetime_name);
-        // get event subtotal line
-        $events_sub_total = self::get_event_line_item_for_ticket($total_line_item, $ticket);
-        // add $ticket to cart
-        $line_item = EE_Line_Item::new_instance(array(
-            'LIN_name'       => $ticket->name(),
-            'LIN_desc'       => $ticket->description() !== '' ? $ticket->description() . ' ' . $event : $event,
-            'LIN_unit_price' => $ticket->price(),
-            'LIN_quantity'   => $qty,
-            'LIN_is_taxable' => $ticket->taxable(),
-            'LIN_order'      => count($events_sub_total->children()),
-            'LIN_total'      => $ticket->price() * $qty,
-            'LIN_type'       => EEM_Line_Item::type_line_item,
-            'OBJ_ID'         => $ticket->ID(),
-            'OBJ_type'       => EEM_Line_Item::OBJ_TYPE_TICKET,
-        ));
-        $line_item = apply_filters(
-            'FHEE__EEH_Line_Item__create_ticket_line_item__line_item',
-            $line_item
-        );
-        $events_sub_total->add_child_line_item($line_item);
-        // now add the sub-line items
-        $running_total_for_ticket = 0;
-        foreach ($ticket->prices(array('order_by' => array('PRC_order' => 'ASC'))) as $price) {
-            $sign = $price->is_discount() ? -1 : 1;
-            $price_total = $price->is_percent()
-                ? $running_total_for_ticket * $price->amount() / 100
-                : $price->amount() * $qty;
-            $sub_line_item = EE_Line_Item::new_instance(array(
-                'LIN_name'       => $price->name(),
-                'LIN_desc'       => $price->desc(),
-                'LIN_quantity'   => $price->is_percent() ? null : $qty,
-                'LIN_is_taxable' => false,
-                'LIN_order'      => $price->order(),
-                'LIN_total'      => $sign * $price_total,
-                'LIN_type'       => EEM_Line_Item::type_sub_line_item,
-                'OBJ_ID'         => $price->ID(),
-                'OBJ_type'       => EEM_Line_Item::OBJ_TYPE_PRICE,
-            ));
-            $sub_line_item = apply_filters(
-                'FHEE__EEH_Line_Item__create_ticket_line_item__sub_line_item',
-                $sub_line_item
-            );
-            if ($price->is_percent()) {
-                $sub_line_item->set_percent($sign * $price->amount());
-            } else {
-                $sub_line_item->set_unit_price($sign * $price->amount());
-            }
-            $running_total_for_ticket += $price_total;
-            $line_item->add_child_line_item($sub_line_item);
-        }
-        return $line_item;
-    }
-
-
-    /**
-     * Adds the specified item under the pre-tax-sub-total line item. Automatically
-     * re-calculates the line item totals and updates the related transaction. But
-     * DOES NOT automatically upgrade the transaction's registrations' final prices (which
-     * should probably change because of this).
-     * You should call EE_Registration_Processor::calculate_reg_final_prices_per_line_item()
-     * after using this, to keep the registration final prices in-sync with the transaction's total.
-     *
-     * @param EE_Line_Item $total_line_item
-     * @param EE_Line_Item $item to be added
-     * @return boolean
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     */
-    public static function add_item(EE_Line_Item $total_line_item, EE_Line_Item $item)
-    {
-        $pre_tax_subtotal = self::get_pre_tax_subtotal($total_line_item);
-        if ($pre_tax_subtotal instanceof EE_Line_Item) {
-            $success = $pre_tax_subtotal->add_child_line_item($item);
-        } else {
-            return false;
-        }
-        $total_line_item->recalculate_total_including_taxes();
-        return $success;
-    }
-
-
-    /**
-     * cancels an existing ticket line item,
-     * by decrementing it's quantity by 1 and adding a new "type_cancellation" sub-line-item.
-     * ALL totals and subtotals will NEED TO BE UPDATED after performing this action
-     *
-     * @param EE_Line_Item $ticket_line_item
-     * @param int          $qty
-     * @return bool success
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     */
-    public static function cancel_ticket_line_item(EE_Line_Item $ticket_line_item, $qty = 1)
-    {
-        // validate incoming line_item
-        if ($ticket_line_item->OBJ_type() !== EEM_Line_Item::OBJ_TYPE_TICKET) {
-            throw new EE_Error(
-                sprintf(
-                    esc_html__(
-                        'The supplied line item must have an Object Type of "Ticket", not %1$s.',
-                        'event_espresso'
-                    ),
-                    $ticket_line_item->type()
-                )
-            );
-        }
-        if ($ticket_line_item->quantity() < $qty) {
-            throw new EE_Error(
-                sprintf(
-                    esc_html__(
-                        'Can not cancel %1$d ticket(s) because the supplied line item has a quantity of %2$d.',
-                        'event_espresso'
-                    ),
-                    $qty,
-                    $ticket_line_item->quantity()
-                )
-            );
-        }
-        // decrement ticket quantity; don't rely on auto-fixing when recalculating totals to do this
-        $ticket_line_item->set_quantity($ticket_line_item->quantity() - $qty);
-        foreach ($ticket_line_item->children() as $child_line_item) {
-            if (
-                $child_line_item->is_sub_line_item()
-                && ! $child_line_item->is_percent()
-                && ! $child_line_item->is_cancellation()
-            ) {
-                $child_line_item->set_quantity($child_line_item->quantity() - $qty);
-            }
-        }
-        // get cancellation sub line item
-        $cancellation_line_item = EEH_Line_Item::get_descendants_of_type(
-            $ticket_line_item,
-            EEM_Line_Item::type_cancellation
-        );
-        $cancellation_line_item = reset($cancellation_line_item);
-        // verify that this ticket was indeed previously cancelled
-        if ($cancellation_line_item instanceof EE_Line_Item) {
-            // increment cancelled quantity
-            $cancellation_line_item->set_quantity($cancellation_line_item->quantity() + $qty);
-        } else {
-            // create cancellation sub line item
-            $cancellation_line_item = EE_Line_Item::new_instance(array(
-                'LIN_name'       => esc_html__('Cancellation', 'event_espresso'),
-                'LIN_desc'       => sprintf(
-                    esc_html_x(
-                        'Cancelled %1$s : %2$s',
-                        'Cancelled Ticket Name : 2015-01-01 11:11',
-                        'event_espresso'
-                    ),
-                    $ticket_line_item->name(),
-                    current_time(get_option('date_format') . ' ' . get_option('time_format'))
-                ),
-                'LIN_unit_price' => 0, // $ticket_line_item->unit_price()
-                'LIN_quantity'   => $qty,
-                'LIN_is_taxable' => $ticket_line_item->is_taxable(),
-                'LIN_order'      => count($ticket_line_item->children()),
-                'LIN_total'      => 0, // $ticket_line_item->unit_price()
-                'LIN_type'       => EEM_Line_Item::type_cancellation,
-            ));
-            $ticket_line_item->add_child_line_item($cancellation_line_item);
-        }
-        if ($ticket_line_item->save_this_and_descendants() > 0) {
-            // decrement parent line item quantity
-            $event_line_item = $ticket_line_item->parent();
-            if (
-                $event_line_item instanceof EE_Line_Item
-                && $event_line_item->OBJ_type() === EEM_Line_Item::OBJ_TYPE_EVENT
-            ) {
-                $event_line_item->set_quantity($event_line_item->quantity() - $qty);
-                $event_line_item->save();
-            }
-            EEH_Line_Item::get_grand_total_and_recalculate_everything($ticket_line_item);
-            return true;
-        }
-        return false;
-    }
-
-
-    /**
-     * reinstates (un-cancels?) a previously canceled ticket line item,
-     * by incrementing it's quantity by 1, and decrementing it's "type_cancellation" sub-line-item.
-     * ALL totals and subtotals will NEED TO BE UPDATED after performing this action
-     *
-     * @param EE_Line_Item $ticket_line_item
-     * @param int          $qty
-     * @return bool success
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     */
-    public static function reinstate_canceled_ticket_line_item(EE_Line_Item $ticket_line_item, $qty = 1)
-    {
-        // validate incoming line_item
-        if ($ticket_line_item->OBJ_type() !== EEM_Line_Item::OBJ_TYPE_TICKET) {
-            throw new EE_Error(
-                sprintf(
-                    esc_html__(
-                        'The supplied line item must have an Object Type of "Ticket", not %1$s.',
-                        'event_espresso'
-                    ),
-                    $ticket_line_item->type()
-                )
-            );
-        }
-        // get cancellation sub line item
-        $cancellation_line_item = EEH_Line_Item::get_descendants_of_type(
-            $ticket_line_item,
-            EEM_Line_Item::type_cancellation
-        );
-        $cancellation_line_item = reset($cancellation_line_item);
-        // verify that this ticket was indeed previously cancelled
-        if (! $cancellation_line_item instanceof EE_Line_Item) {
-            return false;
-        }
-        if ($cancellation_line_item->quantity() > $qty) {
-            // decrement cancelled quantity
-            $cancellation_line_item->set_quantity($cancellation_line_item->quantity() - $qty);
-        } elseif ($cancellation_line_item->quantity() === $qty) {
-            // decrement cancelled quantity in case anyone still has the object kicking around
-            $cancellation_line_item->set_quantity($cancellation_line_item->quantity() - $qty);
-            // delete because quantity will end up as 0
-            $cancellation_line_item->delete();
-            // and attempt to destroy the object,
-            // even though PHP won't actually destroy it until it needs the memory
-            unset($cancellation_line_item);
-        } else {
-            // what ?!?! negative quantity ?!?!
-            throw new EE_Error(
-                sprintf(
-                    esc_html__(
-                        'Can not reinstate %1$d cancelled ticket(s) because the cancelled ticket quantity is only %2$d.',
-                        'event_espresso'
-                    ),
-                    $qty,
-                    $cancellation_line_item->quantity()
-                )
-            );
-        }
-        // increment ticket quantity
-        $ticket_line_item->set_quantity($ticket_line_item->quantity() + $qty);
-        if ($ticket_line_item->save_this_and_descendants() > 0) {
-            // increment parent line item quantity
-            $event_line_item = $ticket_line_item->parent();
-            if (
-                $event_line_item instanceof EE_Line_Item
-                && $event_line_item->OBJ_type() === EEM_Line_Item::OBJ_TYPE_EVENT
-            ) {
-                $event_line_item->set_quantity($event_line_item->quantity() + $qty);
-            }
-            EEH_Line_Item::get_grand_total_and_recalculate_everything($ticket_line_item);
-            return true;
-        }
-        return false;
-    }
-
-
-    /**
-     * calls EEH_Line_Item::find_transaction_grand_total_for_line_item()
-     * then EE_Line_Item::recalculate_total_including_taxes() on the result
-     *
-     * @param EE_Line_Item $line_item
-     * @return float
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     */
-    public static function get_grand_total_and_recalculate_everything(EE_Line_Item $line_item)
-    {
-        $grand_total_line_item = EEH_Line_Item::find_transaction_grand_total_for_line_item($line_item);
-        return $grand_total_line_item->recalculate_total_including_taxes();
-    }
-
-
-    /**
-     * Gets the line item which contains the subtotal of all the items
-     *
-     * @param EE_Line_Item $total_line_item of type EEM_Line_Item::type_total
-     * @return EE_Line_Item
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     */
-    public static function get_pre_tax_subtotal(EE_Line_Item $total_line_item)
-    {
-        $pre_tax_subtotal = $total_line_item->get_child_line_item('pre-tax-subtotal');
-        return $pre_tax_subtotal instanceof EE_Line_Item
-            ? $pre_tax_subtotal
-            : self::create_pre_tax_subtotal($total_line_item);
-    }
-
-
-    /**
-     * Gets the line item for the taxes subtotal
-     *
-     * @param EE_Line_Item $total_line_item of type EEM_Line_Item::type_total
-     * @return EE_Line_Item
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     */
-    public static function get_taxes_subtotal(EE_Line_Item $total_line_item)
-    {
-        $taxes = $total_line_item->get_child_line_item('taxes');
-        return $taxes ? $taxes : self::create_taxes_subtotal($total_line_item);
-    }
-
-
-    /**
-     * sets the TXN ID on an EE_Line_Item if passed a valid EE_Transaction object
-     *
-     * @param EE_Line_Item   $line_item
-     * @param EE_Transaction $transaction
-     * @return void
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     */
-    public static function set_TXN_ID(EE_Line_Item $line_item, $transaction = null)
-    {
-        if ($transaction) {
-            /** @type EEM_Transaction $EEM_Transaction */
-            $EEM_Transaction = EE_Registry::instance()->load_model('Transaction');
-            $TXN_ID = $EEM_Transaction->ensure_is_ID($transaction);
-            $line_item->set_TXN_ID($TXN_ID);
-        }
-    }
-
-
-    /**
-     * Creates a new default total line item for the transaction,
-     * and its tickets subtotal and taxes subtotal line items (and adds the
-     * existing taxes as children of the taxes subtotal line item)
-     *
-     * @param EE_Transaction $transaction
-     * @return EE_Line_Item of type total
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     */
-    public static function create_total_line_item($transaction = null)
-    {
-        $total_line_item = EE_Line_Item::new_instance(array(
-            'LIN_code' => 'total',
-            'LIN_name' => esc_html__('Grand Total', 'event_espresso'),
-            'LIN_type' => EEM_Line_Item::type_total,
-            'OBJ_type' => EEM_Line_Item::OBJ_TYPE_TRANSACTION,
-        ));
-        $total_line_item = apply_filters(
-            'FHEE__EEH_Line_Item__create_total_line_item__total_line_item',
-            $total_line_item
-        );
-        self::set_TXN_ID($total_line_item, $transaction);
-        self::create_pre_tax_subtotal($total_line_item, $transaction);
-        self::create_taxes_subtotal($total_line_item, $transaction);
-        return $total_line_item;
-    }
-
-
-    /**
-     * Creates a default items subtotal line item
-     *
-     * @param EE_Line_Item   $total_line_item
-     * @param EE_Transaction $transaction
-     * @return EE_Line_Item
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     */
-    protected static function create_pre_tax_subtotal(EE_Line_Item $total_line_item, $transaction = null)
-    {
-        $pre_tax_line_item = EE_Line_Item::new_instance(array(
-            'LIN_code' => 'pre-tax-subtotal',
-            'LIN_name' => esc_html__('Pre-Tax Subtotal', 'event_espresso'),
-            'LIN_type' => EEM_Line_Item::type_sub_total,
-        ));
-        $pre_tax_line_item = apply_filters(
-            'FHEE__EEH_Line_Item__create_pre_tax_subtotal__pre_tax_line_item',
-            $pre_tax_line_item
-        );
-        self::set_TXN_ID($pre_tax_line_item, $transaction);
-        $total_line_item->add_child_line_item($pre_tax_line_item);
-        self::create_event_subtotal($pre_tax_line_item, $transaction);
-        return $pre_tax_line_item;
-    }
-
-
-    /**
-     * Creates a line item for the taxes subtotal and finds all the tax prices
-     * and applies taxes to it
-     *
-     * @param EE_Line_Item   $total_line_item of type EEM_Line_Item::type_total
-     * @param EE_Transaction $transaction
-     * @return EE_Line_Item
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     */
-    protected static function create_taxes_subtotal(EE_Line_Item $total_line_item, $transaction = null)
-    {
-        $tax_line_item = EE_Line_Item::new_instance(array(
-            'LIN_code'  => 'taxes',
-            'LIN_name'  => esc_html__('Taxes', 'event_espresso'),
-            'LIN_type'  => EEM_Line_Item::type_tax_sub_total,
-            'LIN_order' => 1000,// this should always come last
-        ));
-        $tax_line_item = apply_filters(
-            'FHEE__EEH_Line_Item__create_taxes_subtotal__tax_line_item',
-            $tax_line_item
-        );
-        self::set_TXN_ID($tax_line_item, $transaction);
-        $total_line_item->add_child_line_item($tax_line_item);
-        // and lastly, add the actual taxes
-        self::apply_taxes($total_line_item);
-        return $tax_line_item;
-    }
-
-
-    /**
-     * Creates a default items subtotal line item
-     *
-     * @param EE_Line_Item   $pre_tax_line_item
-     * @param EE_Transaction $transaction
-     * @param EE_Event       $event
-     * @return EE_Line_Item
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     */
-    public static function create_event_subtotal(EE_Line_Item $pre_tax_line_item, $transaction = null, $event = null)
-    {
-        $event_line_item = EE_Line_Item::new_instance(array(
-            'LIN_code' => self::get_event_code($event),
-            'LIN_name' => self::get_event_name($event),
-            'LIN_desc' => self::get_event_desc($event),
-            'LIN_type' => EEM_Line_Item::type_sub_total,
-            'OBJ_type' => EEM_Line_Item::OBJ_TYPE_EVENT,
-            'OBJ_ID'   => $event instanceof EE_Event ? $event->ID() : 0,
-        ));
-        $event_line_item = apply_filters(
-            'FHEE__EEH_Line_Item__create_event_subtotal__event_line_item',
-            $event_line_item
-        );
-        self::set_TXN_ID($event_line_item, $transaction);
-        $pre_tax_line_item->add_child_line_item($event_line_item);
-        return $event_line_item;
-    }
-
-
-    /**
-     * Gets what the event ticket's code SHOULD be
-     *
-     * @param EE_Event $event
-     * @return string
-     * @throws EE_Error
-     */
-    public static function get_event_code($event)
-    {
-        return 'event-' . ($event instanceof EE_Event ? $event->ID() : '0');
-    }
-
-
-    /**
-     * Gets the event name
-     *
-     * @param EE_Event $event
-     * @return string
-     * @throws EE_Error
-     */
-    public static function get_event_name($event)
-    {
-        return $event instanceof EE_Event
-            ? mb_substr($event->name(), 0, 245)
-            : esc_html__('Event', 'event_espresso');
-    }
-
-
-    /**
-     * Gets the event excerpt
-     *
-     * @param EE_Event $event
-     * @return string
-     * @throws EE_Error
-     */
-    public static function get_event_desc($event)
-    {
-        return $event instanceof EE_Event ? $event->short_description() : '';
-    }
-
-
-    /**
-     * Given the grand total line item and a ticket, finds the event sub-total
-     * line item the ticket's purchase should be added onto
-     *
-     * @access public
-     * @param EE_Line_Item $grand_total the grand total line item
-     * @param EE_Ticket    $ticket
-     * @return EE_Line_Item
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     */
-    public static function get_event_line_item_for_ticket(EE_Line_Item $grand_total, EE_Ticket $ticket)
-    {
-        $first_datetime = $ticket->first_datetime();
-        if (! $first_datetime instanceof EE_Datetime) {
-            throw new EE_Error(
-                sprintf(
-                    esc_html__('The supplied ticket (ID %d) has no datetimes', 'event_espresso'),
-                    $ticket->ID()
-                )
-            );
-        }
-        $event = $first_datetime->event();
-        if (! $event instanceof EE_Event) {
-            throw new EE_Error(
-                sprintf(
-                    esc_html__(
-                        'The supplied ticket (ID %d) has no event data associated with it.',
-                        'event_espresso'
-                    ),
-                    $ticket->ID()
-                )
-            );
-        }
-        $events_sub_total = EEH_Line_Item::get_event_line_item($grand_total, $event);
-        if (! $events_sub_total instanceof EE_Line_Item) {
-            throw new EE_Error(
-                sprintf(
-                    esc_html__(
-                        'There is no events sub-total for ticket %s on total line item %d',
-                        'event_espresso'
-                    ),
-                    $ticket->ID(),
-                    $grand_total->ID()
-                )
-            );
-        }
-        return $events_sub_total;
-    }
-
-
-    /**
-     * Gets the event line item
-     *
-     * @param EE_Line_Item $grand_total
-     * @param EE_Event     $event
-     * @return EE_Line_Item for the event subtotal which is a child of $grand_total
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     */
-    public static function get_event_line_item(EE_Line_Item $grand_total, $event)
-    {
-        /** @type EE_Event $event */
-        $event = EEM_Event::instance()->ensure_is_obj($event, true);
-        $event_line_item = null;
-        $found = false;
-        foreach (EEH_Line_Item::get_event_subtotals($grand_total) as $event_line_item) {
-            // default event subtotal, we should only ever find this the first time this method is called
-            if (! $event_line_item->OBJ_ID()) {
-                // let's use this! but first... set the event details
-                EEH_Line_Item::set_event_subtotal_details($event_line_item, $event);
-                $found = true;
-                break;
-            }
-            if ($event_line_item->OBJ_ID() === $event->ID()) {
-                // found existing line item for this event in the cart, so break out of loop and use this one
-                $found = true;
-                break;
-            }
-        }
-        if (! $found) {
-            // there is no event sub-total yet, so add it
-            $pre_tax_subtotal = EEH_Line_Item::get_pre_tax_subtotal($grand_total);
-            // create a new "event" subtotal below that
-            $event_line_item = EEH_Line_Item::create_event_subtotal($pre_tax_subtotal, null, $event);
-            // and set the event details
-            EEH_Line_Item::set_event_subtotal_details($event_line_item, $event);
-        }
-        return $event_line_item;
-    }
-
-
-    /**
-     * Creates a default items subtotal line item
-     *
-     * @param EE_Line_Item   $event_line_item
-     * @param EE_Event       $event
-     * @param EE_Transaction $transaction
-     * @return void
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     */
-    public static function set_event_subtotal_details(
-        EE_Line_Item $event_line_item,
-        EE_Event $event,
-        $transaction = null
-    ) {
-        if ($event instanceof EE_Event) {
-            $event_line_item->set_code(self::get_event_code($event));
-            $event_line_item->set_name(self::get_event_name($event));
-            $event_line_item->set_desc(self::get_event_desc($event));
-            $event_line_item->set_OBJ_ID($event->ID());
-        }
-        self::set_TXN_ID($event_line_item, $transaction);
-    }
-
-
-    /**
-     * Finds what taxes should apply, adds them as tax line items under the taxes sub-total,
-     * and recalculates the taxes sub-total and the grand total. Resets the taxes, so
-     * any old taxes are removed
-     *
-     * @param EE_Line_Item $total_line_item of type EEM_Line_Item::type_total
-     * @param bool         $update_txn_status
-     * @return bool
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     * @throws RuntimeException
-     */
-    public static function apply_taxes(EE_Line_Item $total_line_item, $update_txn_status = false)
-    {
-        /** @type EEM_Price $EEM_Price */
-        $EEM_Price = EE_Registry::instance()->load_model('Price');
-        // get array of taxes via Price Model
-        $ordered_taxes = $EEM_Price->get_all_prices_that_are_taxes();
-        ksort($ordered_taxes);
-        $taxes_line_item = self::get_taxes_subtotal($total_line_item);
-        // just to be safe, remove its old tax line items
-        $deleted = $taxes_line_item->delete_children_line_items();
-        $updates = false;
-        // loop thru taxes
-        foreach ($ordered_taxes as $order => $taxes) {
-            foreach ($taxes as $tax) {
-                if ($tax instanceof EE_Price) {
-                    $tax_line_item = EE_Line_Item::new_instance(
-                        array(
-                            'LIN_name'       => $tax->name(),
-                            'LIN_desc'       => $tax->desc(),
-                            'LIN_percent'    => $tax->amount(),
-                            'LIN_is_taxable' => false,
-                            'LIN_order'      => $order,
-                            'LIN_total'      => 0,
-                            'LIN_type'       => EEM_Line_Item::type_tax,
-                            'OBJ_type'       => EEM_Line_Item::OBJ_TYPE_PRICE,
-                            'OBJ_ID'         => $tax->ID(),
-                        )
-                    );
-                    $tax_line_item = apply_filters(
-                        'FHEE__EEH_Line_Item__apply_taxes__tax_line_item',
-                        $tax_line_item
-                    );
-                    $updates = $taxes_line_item->add_child_line_item($tax_line_item) ?
-                        true :
-                        $updates;
-                }
-            }
-        }
-        // only recalculate totals if something changed
-        if ($deleted || $updates) {
-            $total_line_item->recalculate_total_including_taxes($update_txn_status);
-            return true;
-        }
-        return false;
-    }
-
-
-    /**
-     * Ensures that taxes have been applied to the order, if not applies them.
-     * Returns the total amount of tax
-     *
-     * @param EE_Line_Item $total_line_item of type EEM_Line_Item::type_total
-     * @return float
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     */
-    public static function ensure_taxes_applied($total_line_item)
-    {
-        $taxes_subtotal = self::get_taxes_subtotal($total_line_item);
-        if (! $taxes_subtotal->children()) {
-            self::apply_taxes($total_line_item);
-        }
-        return $taxes_subtotal->total();
-    }
-
-
-    /**
-     * Deletes ALL children of the passed line item
-     *
-     * @param EE_Line_Item $parent_line_item
-     * @return bool
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     */
-    public static function delete_all_child_items(EE_Line_Item $parent_line_item)
-    {
-        $deleted = 0;
-        foreach ($parent_line_item->children() as $child_line_item) {
-            if ($child_line_item instanceof EE_Line_Item) {
-                $deleted += EEH_Line_Item::delete_all_child_items($child_line_item);
-                if ($child_line_item->ID()) {
-                    $child_line_item->delete();
-                    unset($child_line_item);
-                } else {
-                    $parent_line_item->delete_child_line_item($child_line_item->code());
-                }
-                $deleted++;
-            }
-        }
-        return $deleted;
-    }
-
-
-    /**
-     * Deletes the line items as indicated by the line item code(s) provided,
-     * regardless of where they're found in the line item tree. Automatically
-     * re-calculates the line item totals and updates the related transaction. But
-     * DOES NOT automatically upgrade the transaction's registrations' final prices (which
-     * should probably change because of this).
-     * You should call EE_Registration_Processor::calculate_reg_final_prices_per_line_item()
-     * after using this, to keep the registration final prices in-sync with the transaction's total.
-     *
-     * @param EE_Line_Item      $total_line_item of type EEM_Line_Item::type_total
-     * @param array|bool|string $line_item_codes
-     * @return int number of items successfully removed
-     * @throws EE_Error
-     */
-    public static function delete_items(EE_Line_Item $total_line_item, $line_item_codes = false)
-    {
-
-        if ($total_line_item->type() !== EEM_Line_Item::type_total) {
-            EE_Error::doing_it_wrong(
-                'EEH_Line_Item::delete_items',
-                esc_html__(
-                    'This static method should only be called with a TOTAL line item, otherwise we won\'t recalculate the totals correctly',
-                    'event_espresso'
-                ),
-                '4.6.18'
-            );
-        }
-        do_action('AHEE_log', __FILE__, __FUNCTION__, '');
-
-        // check if only a single line_item_id was passed
-        if (! empty($line_item_codes) && ! is_array($line_item_codes)) {
-            // place single line_item_id in an array to appear as multiple line_item_ids
-            $line_item_codes = array($line_item_codes);
-        }
-        $removals = 0;
-        // cycle thru line_item_ids
-        foreach ($line_item_codes as $line_item_id) {
-            $removals += $total_line_item->delete_child_line_item($line_item_id);
-        }
-
-        if ($removals > 0) {
-            $total_line_item->recalculate_taxes_and_tax_total();
-            return $removals;
-        } else {
-            return false;
-        }
-    }
-
-
-    /**
-     * Overwrites the previous tax by clearing out the old taxes, and creates a new
-     * tax and updates the total line item accordingly
-     *
-     * @param EE_Line_Item $total_line_item
-     * @param float        $amount
-     * @param string       $name
-     * @param string       $description
-     * @param string       $code
-     * @param boolean      $add_to_existing_line_item
-     *                          if true, and a duplicate line item with the same code is found,
-     *                          $amount will be added onto it; otherwise will simply set the taxes to match $amount
-     * @return EE_Line_Item the new tax line item created
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     */
-    public static function set_total_tax_to(
-        EE_Line_Item $total_line_item,
-        $amount,
-        $name = null,
-        $description = null,
-        $code = null,
-        $add_to_existing_line_item = false
-    ) {
-        $tax_subtotal = self::get_taxes_subtotal($total_line_item);
-        $taxable_total = $total_line_item->taxable_total();
-
-        if ($add_to_existing_line_item) {
-            $new_tax = $tax_subtotal->get_child_line_item($code);
-            EEM_Line_Item::instance()->delete(
-                array(array('LIN_code' => array('!=', $code), 'LIN_parent' => $tax_subtotal->ID()))
-            );
-        } else {
-            $new_tax = null;
-            $tax_subtotal->delete_children_line_items();
-        }
-        if ($new_tax) {
-            $new_tax->set_total($new_tax->total() + $amount);
-            $new_tax->set_percent($taxable_total ? $new_tax->total() / $taxable_total * 100 : 0);
-        } else {
-            // no existing tax item. Create it
-            $new_tax = EE_Line_Item::new_instance(array(
-                'TXN_ID'      => $total_line_item->TXN_ID(),
-                'LIN_name'    => $name ? $name : esc_html__('Tax', 'event_espresso'),
-                'LIN_desc'    => $description ? $description : '',
-                'LIN_percent' => $taxable_total ? ($amount / $taxable_total * 100) : 0,
-                'LIN_total'   => $amount,
-                'LIN_parent'  => $tax_subtotal->ID(),
-                'LIN_type'    => EEM_Line_Item::type_tax,
-                'LIN_code'    => $code,
-            ));
-        }
-
-        $new_tax = apply_filters(
-            'FHEE__EEH_Line_Item__set_total_tax_to__new_tax_subtotal',
-            $new_tax,
-            $total_line_item
-        );
-        $new_tax->save();
-        $tax_subtotal->set_total($new_tax->total());
-        $tax_subtotal->save();
-        $total_line_item->recalculate_total_including_taxes();
-        return $new_tax;
-    }
-
-
-    /**
-     * Makes all the line items which are children of $line_item taxable (or not).
-     * Does NOT save the line items
-     *
-     * @param EE_Line_Item $line_item
-     * @param boolean      $taxable
-     * @param string       $code_substring_for_whitelist if this string is part of the line item's code
-     *                                                   it will be whitelisted (ie, except from becoming taxable)
-     * @throws EE_Error
-     */
-    public static function set_line_items_taxable(
-        EE_Line_Item $line_item,
-        $taxable = true,
-        $code_substring_for_whitelist = null
-    ) {
-        $whitelisted = false;
-        if ($code_substring_for_whitelist !== null) {
-            $whitelisted = strpos($line_item->code(), $code_substring_for_whitelist) !== false;
-        }
-        if (! $whitelisted && $line_item->is_line_item()) {
-            $line_item->set_is_taxable($taxable);
-        }
-        foreach ($line_item->children() as $child_line_item) {
-            EEH_Line_Item::set_line_items_taxable(
-                $child_line_item,
-                $taxable,
-                $code_substring_for_whitelist
-            );
-        }
-    }
-
-
-    /**
-     * Gets all descendants that are event subtotals
-     *
-     * @uses  EEH_Line_Item::get_subtotals_of_object_type()
-     * @param EE_Line_Item $parent_line_item - the line item to find descendants of
-     * @return EE_Line_Item[]
-     * @throws EE_Error
-     */
-    public static function get_event_subtotals(EE_Line_Item $parent_line_item)
-    {
-        return self::get_subtotals_of_object_type($parent_line_item, EEM_Line_Item::OBJ_TYPE_EVENT);
-    }
-
-
-    /**
-     * Gets all descendants subtotals that match the supplied object type
-     *
-     * @uses  EEH_Line_Item::_get_descendants_by_type_and_object_type()
-     * @param EE_Line_Item $parent_line_item - the line item to find descendants of
-     * @param string       $obj_type
-     * @return EE_Line_Item[]
-     * @throws EE_Error
-     */
-    public static function get_subtotals_of_object_type(EE_Line_Item $parent_line_item, $obj_type = '')
-    {
-        return self::_get_descendants_by_type_and_object_type(
-            $parent_line_item,
-            EEM_Line_Item::type_sub_total,
-            $obj_type
-        );
-    }
-
-
-    /**
-     * Gets all descendants that are tickets
-     *
-     * @uses  EEH_Line_Item::get_line_items_of_object_type()
-     * @param EE_Line_Item $parent_line_item - the line item to find descendants of
-     * @return EE_Line_Item[]
-     * @throws EE_Error
-     */
-    public static function get_ticket_line_items(EE_Line_Item $parent_line_item)
-    {
-        return self::get_line_items_of_object_type(
-            $parent_line_item,
-            EEM_Line_Item::OBJ_TYPE_TICKET
-        );
-    }
-
-
-    /**
-     * Gets all descendants subtotals that match the supplied object type
-     *
-     * @uses  EEH_Line_Item::_get_descendants_by_type_and_object_type()
-     * @param EE_Line_Item $parent_line_item - the line item to find descendants of
-     * @param string       $obj_type
-     * @return EE_Line_Item[]
-     * @throws EE_Error
-     */
-    public static function get_line_items_of_object_type(EE_Line_Item $parent_line_item, $obj_type = '')
-    {
-        return self::_get_descendants_by_type_and_object_type(
-            $parent_line_item,
-            EEM_Line_Item::type_line_item,
-            $obj_type
-        );
-    }
-
-
-    /**
-     * Gets all the descendants (ie, children or children of children etc) that are of the type 'tax'
-     *
-     * @uses  EEH_Line_Item::get_descendants_of_type()
-     * @param EE_Line_Item $parent_line_item - the line item to find descendants of
-     * @return EE_Line_Item[]
-     * @throws EE_Error
-     */
-    public static function get_tax_descendants(EE_Line_Item $parent_line_item)
-    {
-        return EEH_Line_Item::get_descendants_of_type(
-            $parent_line_item,
-            EEM_Line_Item::type_tax
-        );
-    }
-
-
-    /**
-     * Gets all the real items purchased which are children of this item
-     *
-     * @uses  EEH_Line_Item::get_descendants_of_type()
-     * @param EE_Line_Item $parent_line_item - the line item to find descendants of
-     * @return EE_Line_Item[]
-     * @throws EE_Error
-     */
-    public static function get_line_item_descendants(EE_Line_Item $parent_line_item)
-    {
-        return EEH_Line_Item::get_descendants_of_type(
-            $parent_line_item,
-            EEM_Line_Item::type_line_item
-        );
-    }
-
-
-    /**
-     * Gets all descendants of supplied line item that match the supplied line item type
-     *
-     * @uses  EEH_Line_Item::_get_descendants_by_type_and_object_type()
-     * @param EE_Line_Item $parent_line_item - the line item to find descendants of
-     * @param string       $line_item_type   one of the EEM_Line_Item constants
-     * @return EE_Line_Item[]
-     * @throws EE_Error
-     */
-    public static function get_descendants_of_type(EE_Line_Item $parent_line_item, $line_item_type)
-    {
-        return self::_get_descendants_by_type_and_object_type(
-            $parent_line_item,
-            $line_item_type,
-            null
-        );
-    }
-
-
-    /**
-     * Gets all descendants of supplied line item that match the supplied line item type and possibly the object type
-     * as well
-     *
-     * @param EE_Line_Item  $parent_line_item - the line item to find descendants of
-     * @param string        $line_item_type   one of the EEM_Line_Item constants
-     * @param string | NULL $obj_type         object model class name (minus prefix) or NULL to ignore object type when
-     *                                        searching
-     * @return EE_Line_Item[]
-     * @throws EE_Error
-     */
-    protected static function _get_descendants_by_type_and_object_type(
-        EE_Line_Item $parent_line_item,
-        $line_item_type,
-        $obj_type = null
-    ) {
-        $objects = array();
-        foreach ($parent_line_item->children() as $child_line_item) {
-            if ($child_line_item instanceof EE_Line_Item) {
-                if (
-                    $child_line_item->type() === $line_item_type
-                    && (
-                        $child_line_item->OBJ_type() === $obj_type || $obj_type === null
-                    )
-                ) {
-                    $objects[] = $child_line_item;
-                } else {
-                    // go-through-all-its children looking for more matches
-                    $objects = array_merge(
-                        $objects,
-                        self::_get_descendants_by_type_and_object_type(
-                            $child_line_item,
-                            $line_item_type,
-                            $obj_type
-                        )
-                    );
-                }
-            }
-        }
-        return $objects;
-    }
-
-
-    /**
-     * Gets all descendants subtotals that match the supplied object type
-     *
-     * @uses  EEH_Line_Item::_get_descendants_by_type_and_object_type()
-     * @param EE_Line_Item $parent_line_item - the line item to find descendants of
-     * @param string       $OBJ_type         object type (like Event)
-     * @param array        $OBJ_IDs          array of OBJ_IDs
-     * @return EE_Line_Item[]
-     * @throws EE_Error
-     */
-    public static function get_line_items_by_object_type_and_IDs(
-        EE_Line_Item $parent_line_item,
-        $OBJ_type = '',
-        $OBJ_IDs = array()
-    ) {
-        return self::_get_descendants_by_object_type_and_object_ID(
-            $parent_line_item,
-            $OBJ_type,
-            $OBJ_IDs
-        );
-    }
-
-
-    /**
-     * Gets all descendants of supplied line item that match the supplied line item type and possibly the object type
-     * as well
-     *
-     * @param EE_Line_Item $parent_line_item - the line item to find descendants of
-     * @param string       $OBJ_type         object type (like Event)
-     * @param array        $OBJ_IDs          array of OBJ_IDs
-     * @return EE_Line_Item[]
-     * @throws EE_Error
-     */
-    protected static function _get_descendants_by_object_type_and_object_ID(
-        EE_Line_Item $parent_line_item,
-        $OBJ_type,
-        $OBJ_IDs
-    ) {
-        $objects = array();
-        foreach ($parent_line_item->children() as $child_line_item) {
-            if ($child_line_item instanceof EE_Line_Item) {
-                if (
-                    $child_line_item->OBJ_type() === $OBJ_type
-                    && is_array($OBJ_IDs)
-                    && in_array($child_line_item->OBJ_ID(), $OBJ_IDs)
-                ) {
-                    $objects[] = $child_line_item;
-                } else {
-                    // go-through-all-its children looking for more matches
-                    $objects = array_merge(
-                        $objects,
-                        self::_get_descendants_by_object_type_and_object_ID(
-                            $child_line_item,
-                            $OBJ_type,
-                            $OBJ_IDs
-                        )
-                    );
-                }
-            }
-        }
-        return $objects;
-    }
-
-
-    /**
-     * Uses a breadth-first-search in order to find the nearest descendant of
-     * the specified type and returns it, else NULL
-     *
-     * @uses  EEH_Line_Item::_get_nearest_descendant()
-     * @param EE_Line_Item $parent_line_item - the line item to find descendants of
-     * @param string       $type             like one of the EEM_Line_Item::type_*
-     * @return EE_Line_Item
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     */
-    public static function get_nearest_descendant_of_type(EE_Line_Item $parent_line_item, $type)
-    {
-        return self::_get_nearest_descendant($parent_line_item, 'LIN_type', $type);
-    }
-
-
-    /**
-     * Uses a breadth-first-search in order to find the nearest descendant
-     * having the specified LIN_code and returns it, else NULL
-     *
-     * @uses  EEH_Line_Item::_get_nearest_descendant()
-     * @param EE_Line_Item $parent_line_item - the line item to find descendants of
-     * @param string       $code             any value used for LIN_code
-     * @return EE_Line_Item
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     */
-    public static function get_nearest_descendant_having_code(EE_Line_Item $parent_line_item, $code)
-    {
-        return self::_get_nearest_descendant($parent_line_item, 'LIN_code', $code);
-    }
-
-
-    /**
-     * Uses a breadth-first-search in order to find the nearest descendant
-     * having the specified LIN_code and returns it, else NULL
-     *
-     * @param EE_Line_Item $parent_line_item - the line item to find descendants of
-     * @param string       $search_field     name of EE_Line_Item property
-     * @param string       $value            any value stored in $search_field
-     * @return EE_Line_Item
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     */
-    protected static function _get_nearest_descendant(EE_Line_Item $parent_line_item, $search_field, $value)
-    {
-        foreach ($parent_line_item->children() as $child) {
-            if ($child->get($search_field) == $value) {
-                return $child;
-            }
-        }
-        foreach ($parent_line_item->children() as $child) {
-            $descendant_found = self::_get_nearest_descendant(
-                $child,
-                $search_field,
-                $value
-            );
-            if ($descendant_found) {
-                return $descendant_found;
-            }
-        }
-        return null;
-    }
-
-
-    /**
-     * if passed line item has a TXN ID, uses that to jump directly to the grand total line item for the transaction,
-     * else recursively walks up the line item tree until a parent of type total is found,
-     *
-     * @param EE_Line_Item $line_item
-     * @return EE_Line_Item
-     * @throws EE_Error
-     */
-    public static function find_transaction_grand_total_for_line_item(EE_Line_Item $line_item)
-    {
-        if ($line_item->TXN_ID()) {
-            $total_line_item = $line_item->transaction()->total_line_item(false);
-            if ($total_line_item instanceof EE_Line_Item) {
-                return $total_line_item;
-            }
-        } else {
-            $line_item_parent = $line_item->parent();
-            if ($line_item_parent instanceof EE_Line_Item) {
-                if ($line_item_parent->is_total()) {
-                    return $line_item_parent;
-                }
-                return EEH_Line_Item::find_transaction_grand_total_for_line_item($line_item_parent);
-            }
-        }
-        throw new EE_Error(
-            sprintf(
-                esc_html__(
-                    'A valid grand total for line item %1$d was not found.',
-                    'event_espresso'
-                ),
-                $line_item->ID()
-            )
-        );
-    }
-
-
-    /**
-     * Prints out a representation of the line item tree
-     *
-     * @param EE_Line_Item $line_item
-     * @param int          $indentation
-     * @return void
-     * @throws EE_Error
-     */
-    public static function visualize(EE_Line_Item $line_item, $indentation = 0)
-    {
-        echo defined('EE_TESTS_DIR') ? "\n" : '<br />';
-        if (! $indentation) {
-            echo defined('EE_TESTS_DIR') ? "\n" : '<br />';
-        }
-        for ($i = 0; $i < $indentation; $i++) {
-            echo '. ';
-        }
-        $breakdown = '';
-        if ($line_item->is_line_item()) {
-            if ($line_item->is_percent()) {
-                $breakdown = "{$line_item->percent()}%";
-            } else {
-                $breakdown = '$' . "{$line_item->unit_price()} x {$line_item->quantity()}";
-            }
-        }
-        echo wp_kses($line_item->name(), AllowedTags::getAllowedTags());
-        echo " [ ID:{$line_item->ID()} | qty:{$line_item->quantity()} ] {$line_item->type()} : ";
-        echo '$' . (string) $line_item->total();
-        if ($breakdown) {
-            echo " ( {$breakdown} )";
-        }
-        if ($line_item->is_taxable()) {
-            echo '  * taxable';
-        }
-        if ($line_item->children()) {
-            foreach ($line_item->children() as $child) {
-                self::visualize($child, $indentation + 1);
-            }
-        }
-    }
-
-
-    /**
-     * Calculates the registration's final price, taking into account that they
-     * need to not only help pay for their OWN ticket, but also any transaction-wide surcharges and taxes,
-     * and receive a portion of any transaction-wide discounts.
-     * eg1, if I buy a $1 ticket and brent buys a $9 ticket, and we receive a $5 discount
-     * then I'll get 1/10 of that $5 discount, which is $0.50, and brent will get
-     * 9/10ths of that $5 discount, which is $4.50. So my final price should be $0.50
-     * and brent's final price should be $5.50.
-     * In order to do this, we basically need to traverse the line item tree calculating
-     * the running totals (just as if we were recalculating the total), but when we identify
-     * regular line items, we need to keep track of their share of the grand total.
-     * Also, we need to keep track of the TAXABLE total for each ticket purchase, so
-     * we can know how to apply taxes to it. (Note: "taxable total" does not equal the "pretax total"
-     * when there are non-taxable items; otherwise they would be the same)
-     *
-     * @param EE_Line_Item $line_item
-     * @param array        $billable_ticket_quantities  array of EE_Ticket IDs and their corresponding quantity that
-     *                                                  can be included in price calculations at this moment
-     * @return array        keys are line items for tickets IDs and values are their share of the running total,
-     *                                                  plus the key 'total', and 'taxable' which also has keys of all
-     *                                                  the ticket IDs.
-     *                                                  Eg array(
-     *                                                      12 => 4.3
-     *                                                      23 => 8.0
-     *                                                      'total' => 16.6,
-     *                                                      'taxable' => array(
-     *                                                          12 => 10,
-     *                                                          23 => 4
-     *                                                      ).
-     *                                                  So to find which registrations have which final price, we need
-     *                                                  to find which line item is theirs, which can be done with
-     *                                                  `EEM_Line_Item::instance()->get_line_item_for_registration(
-     *                                                  $registration );`
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     */
-    public static function calculate_reg_final_prices_per_line_item(
-        EE_Line_Item $line_item,
-        $billable_ticket_quantities = array()
-    ) {
-        $running_totals = [
-            'total'   => 0,
-            'taxable' => ['total' => 0]
-        ];
-        foreach ($line_item->children() as $child_line_item) {
-            switch ($child_line_item->type()) {
-                case EEM_Line_Item::type_sub_total:
-                    $running_totals_from_subtotal = EEH_Line_Item::calculate_reg_final_prices_per_line_item(
-                        $child_line_item,
-                        $billable_ticket_quantities
-                    );
-                    // combine arrays but preserve numeric keys
-                    $running_totals = array_replace_recursive($running_totals_from_subtotal, $running_totals);
-                    $running_totals['total'] += $running_totals_from_subtotal['total'];
-                    $running_totals['taxable']['total'] += $running_totals_from_subtotal['taxable']['total'];
-                    break;
-
-                case EEM_Line_Item::type_tax_sub_total:
-                    // find how much the taxes percentage is
-                    if ($child_line_item->percent() !== 0) {
-                        $tax_percent_decimal = $child_line_item->percent() / 100;
-                    } else {
-                        $tax_percent_decimal = EE_Taxes::get_total_taxes_percentage() / 100;
-                    }
-                    // and apply to all the taxable totals, and add to the pretax totals
-                    foreach ($running_totals as $line_item_id => $this_running_total) {
-                        // "total" and "taxable" array key is an exception
-                        if ($line_item_id === 'taxable') {
-                            continue;
-                        }
-                        $taxable_total = $running_totals['taxable'][ $line_item_id ];
-                        $running_totals[ $line_item_id ] += ($taxable_total * $tax_percent_decimal);
-                    }
-                    break;
-
-                case EEM_Line_Item::type_line_item:
-                    // ticket line items or ????
-                    if ($child_line_item->OBJ_type() === EEM_Line_Item::OBJ_TYPE_TICKET) {
-                        // kk it's a ticket
-                        if (isset($running_totals[ $child_line_item->ID() ])) {
-                            // huh? that shouldn't happen.
-                            $running_totals['total'] += $child_line_item->total();
-                        } else {
-                            // its not in our running totals yet. great.
-                            if ($child_line_item->is_taxable()) {
-                                $taxable_amount = $child_line_item->unit_price();
-                            } else {
-                                $taxable_amount = 0;
-                            }
-                            // are we only calculating totals for some tickets?
-                            if (isset($billable_ticket_quantities[ $child_line_item->OBJ_ID() ])) {
-                                $quantity = $billable_ticket_quantities[ $child_line_item->OBJ_ID() ];
-                                $running_totals[ $child_line_item->ID() ] = $quantity
-                                    ? $child_line_item->unit_price()
-                                    : 0;
-                                $running_totals['taxable'][ $child_line_item->ID() ] = $quantity
-                                    ? $taxable_amount
-                                    : 0;
-                            } else {
-                                $quantity = $child_line_item->quantity();
-                                $running_totals[ $child_line_item->ID() ] = $child_line_item->unit_price();
-                                $running_totals['taxable'][ $child_line_item->ID() ] = $taxable_amount;
-                            }
-                            $running_totals['taxable']['total'] += $taxable_amount * $quantity;
-                            $running_totals['total'] += $child_line_item->unit_price() * $quantity;
-                        }
-                    } else {
-                        // it's some other type of item added to the cart
-                        // it should affect the running totals
-                        // basically we want to convert it into a PERCENT modifier. Because
-                        // more clearly affect all registration's final price equally
-                        $line_items_percent_of_running_total = $running_totals['total'] > 0
-                            ? ($child_line_item->total() / $running_totals['total']) + 1
-                            : 1;
-                        foreach ($running_totals as $line_item_id => $this_running_total) {
-                            // the "taxable" array key is an exception
-                            if ($line_item_id === 'taxable') {
-                                continue;
-                            }
-                            // update the running totals
-                            // yes this actually even works for the running grand total!
-                            $running_totals[ $line_item_id ] =
-                                $line_items_percent_of_running_total * $this_running_total;
-
-                            if ($child_line_item->is_taxable()) {
-                                $running_totals['taxable'][ $line_item_id ] =
-                                    $line_items_percent_of_running_total * $running_totals['taxable'][ $line_item_id ];
-                            }
-                        }
-                    }
-                    break;
-            }
-        }
-        return $running_totals;
-    }
-
-
-    /**
-     * @param EE_Line_Item $total_line_item
-     * @param EE_Line_Item $ticket_line_item
-     * @return float | null
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws OutOfRangeException
-     * @throws ReflectionException
-     */
-    public static function calculate_final_price_for_ticket_line_item(
-        EE_Line_Item $total_line_item,
-        EE_Line_Item $ticket_line_item
-    ) {
-        static $final_prices_per_ticket_line_item = array();
-        if (empty($final_prices_per_ticket_line_item) || empty($final_prices_per_ticket_line_item[ $total_line_item->ID() ])) {
-            $final_prices_per_ticket_line_item[ $total_line_item->ID() ] = EEH_Line_Item::calculate_reg_final_prices_per_line_item(
-                $total_line_item
-            );
-        }
-        // ok now find this new registration's final price
-        if (isset($final_prices_per_ticket_line_item[ $total_line_item->ID() ][ $ticket_line_item->ID() ])) {
-            return $final_prices_per_ticket_line_item[ $total_line_item->ID() ][ $ticket_line_item->ID() ];
-        }
-        $message = sprintf(
-            esc_html__(
-                'The final price for the ticket line item (ID:%1$d) could not be calculated.',
-                'event_espresso'
-            ),
-            $ticket_line_item->ID()
-        );
-        if (WP_DEBUG) {
-            $message .= '<br>' . print_r($final_prices_per_ticket_line_item, true);
-            throw new OutOfRangeException($message);
-        }
-        EE_Log::instance()->log(__CLASS__, __FUNCTION__, $message);
-        return null;
-    }
-
-
-    /**
-     * Creates a duplicate of the line item tree, except only includes billable items
-     * and the portion of line items attributed to billable things
-     *
-     * @param EE_Line_Item      $line_item
-     * @param EE_Registration[] $registrations
-     * @return EE_Line_Item
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     */
-    public static function billable_line_item_tree(EE_Line_Item $line_item, $registrations)
-    {
-        $copy_li = EEH_Line_Item::billable_line_item($line_item, $registrations);
-        foreach ($line_item->children() as $child_li) {
-            $copy_li->add_child_line_item(
-                EEH_Line_Item::billable_line_item_tree($child_li, $registrations)
-            );
-        }
-        // if this is the grand total line item, make sure the totals all add up
-        // (we could have duplicated this logic AS we copied the line items, but
-        // it seems DRYer this way)
-        if ($copy_li->type() === EEM_Line_Item::type_total) {
-            $copy_li->recalculate_total_including_taxes();
-        }
-        return $copy_li;
-    }
-
-
-    /**
-     * Creates a new, unsaved line item from $line_item that factors in the
-     * number of billable registrations on $registrations.
-     *
-     * @param EE_Line_Item      $line_item
-     * @param EE_Registration[] $registrations
-     * @return EE_Line_Item
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     */
-    public static function billable_line_item(EE_Line_Item $line_item, $registrations)
-    {
-        $new_li_fields = $line_item->model_field_array();
-        if (
-            $line_item->type() === EEM_Line_Item::type_line_item &&
-            $line_item->OBJ_type() === EEM_Line_Item::OBJ_TYPE_TICKET
-        ) {
-            $count = 0;
-            foreach ($registrations as $registration) {
-                if (
-                    $line_item->OBJ_ID() === $registration->ticket_ID() &&
-                    in_array(
-                        $registration->status_ID(),
-                        EEM_Registration::reg_statuses_that_allow_payment(),
-                        true
-                    )
-                ) {
-                    $count++;
-                }
-            }
-            $new_li_fields['LIN_quantity'] = $count;
-        }
-        // don't set the total. We'll leave that up to the code that calculates it
-        unset($new_li_fields['LIN_ID'], $new_li_fields['LIN_parent'], $new_li_fields['LIN_total']);
-        return EE_Line_Item::new_instance($new_li_fields);
-    }
-
-
-    /**
-     * Returns a modified line item tree where all the subtotals which have a total of 0
-     * are removed, and line items with a quantity of 0
-     *
-     * @param EE_Line_Item $line_item |null
-     * @return EE_Line_Item|null
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     */
-    public static function non_empty_line_items(EE_Line_Item $line_item)
-    {
-        $copied_li = EEH_Line_Item::non_empty_line_item($line_item);
-        if ($copied_li === null) {
-            return null;
-        }
-        // if this is an event subtotal, we want to only include it if it
-        // has a non-zero total and at least one ticket line item child
-        $ticket_children = 0;
-        foreach ($line_item->children() as $child_li) {
-            $child_li_copy = EEH_Line_Item::non_empty_line_items($child_li);
-            if ($child_li_copy !== null) {
-                $copied_li->add_child_line_item($child_li_copy);
-                if (
-                    $child_li_copy->type() === EEM_Line_Item::type_line_item &&
-                    $child_li_copy->OBJ_type() === EEM_Line_Item::OBJ_TYPE_TICKET
-                ) {
-                    $ticket_children++;
-                }
-            }
-        }
-        // if this is an event subtotal with NO ticket children
-        // we basically want to ignore it
-        if (
-            $ticket_children === 0
-            && $line_item->type() === EEM_Line_Item::type_sub_total
-            && $line_item->OBJ_type() === EEM_Line_Item::OBJ_TYPE_EVENT
-            && $line_item->total() === 0
-        ) {
-            return null;
-        }
-        return $copied_li;
-    }
-
-
-    /**
-     * Creates a new, unsaved line item, but if it's a ticket line item
-     * with a total of 0, or a subtotal of 0, returns null instead
-     *
-     * @param EE_Line_Item $line_item
-     * @return EE_Line_Item
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     */
-    public static function non_empty_line_item(EE_Line_Item $line_item)
-    {
-        if (
-            $line_item->type() === EEM_Line_Item::type_line_item
-            && $line_item->OBJ_type() === EEM_Line_Item::OBJ_TYPE_TICKET
-            && $line_item->quantity() === 0
-        ) {
-            return null;
-        }
-        $new_li_fields = $line_item->model_field_array();
-        // don't set the total. We'll leave that up to the code that calculates it
-        unset($new_li_fields['LIN_ID'], $new_li_fields['LIN_parent']);
-        return EE_Line_Item::new_instance($new_li_fields);
-    }
-
-
-    /**
-     * Cycles through all of the ticket line items for the supplied total line item
-     * and ensures that the line item's "is_taxable" field matches that of its corresponding ticket
-     *
-     * @param EE_Line_Item $total_line_item
-     * @since 4.9.79.p
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     */
-    public static function resetIsTaxableForTickets(EE_Line_Item $total_line_item)
-    {
-        $ticket_line_items = self::get_ticket_line_items($total_line_item);
-        foreach ($ticket_line_items as $ticket_line_item) {
-            if (
-                $ticket_line_item instanceof EE_Line_Item
-                && $ticket_line_item->OBJ_type() === EEM_Line_Item::OBJ_TYPE_TICKET
-            ) {
-                $ticket = $ticket_line_item->ticket();
-                if ($ticket instanceof EE_Ticket && $ticket->taxable() !== $ticket_line_item->is_taxable()) {
-                    $ticket_line_item->set_is_taxable($ticket->taxable());
-                    $ticket_line_item->save();
-                }
-            }
-        }
-    }
-
-
-
-    /**************************************** @DEPRECATED METHODS *************************************** */
-    /**
-     * @deprecated
-     * @param EE_Line_Item $total_line_item
-     * @return EE_Line_Item
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     */
-    public static function get_items_subtotal(EE_Line_Item $total_line_item)
-    {
-        EE_Error::doing_it_wrong(
-            'EEH_Line_Item::get_items_subtotal()',
-            sprintf(
-                esc_html__('Method replaced with %1$s', 'event_espresso'),
-                'EEH_Line_Item::get_pre_tax_subtotal()'
-            ),
-            '4.6.0'
-        );
-        return self::get_pre_tax_subtotal($total_line_item);
-    }
-
-
-    /**
-     * @deprecated
-     * @param EE_Transaction $transaction
-     * @return EE_Line_Item
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     */
-    public static function create_default_total_line_item($transaction = null)
-    {
-        EE_Error::doing_it_wrong(
-            'EEH_Line_Item::create_default_total_line_item()',
-            sprintf(
-                esc_html__('Method replaced with %1$s', 'event_espresso'),
-                'EEH_Line_Item::create_total_line_item()'
-            ),
-            '4.6.0'
-        );
-        return self::create_total_line_item($transaction);
-    }
-
-
-    /**
-     * @deprecated
-     * @param EE_Line_Item   $total_line_item
-     * @param EE_Transaction $transaction
-     * @return EE_Line_Item
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     */
-    public static function create_default_tickets_subtotal(EE_Line_Item $total_line_item, $transaction = null)
-    {
-        EE_Error::doing_it_wrong(
-            'EEH_Line_Item::create_default_tickets_subtotal()',
-            sprintf(
-                esc_html__('Method replaced with %1$s', 'event_espresso'),
-                'EEH_Line_Item::create_pre_tax_subtotal()'
-            ),
-            '4.6.0'
-        );
-        return self::create_pre_tax_subtotal($total_line_item, $transaction);
-    }
-
-
-    /**
-     * @deprecated
-     * @param EE_Line_Item   $total_line_item
-     * @param EE_Transaction $transaction
-     * @return EE_Line_Item
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     */
-    public static function create_default_taxes_subtotal(EE_Line_Item $total_line_item, $transaction = null)
-    {
-        EE_Error::doing_it_wrong(
-            'EEH_Line_Item::create_default_taxes_subtotal()',
-            sprintf(
-                esc_html__('Method replaced with %1$s', 'event_espresso'),
-                'EEH_Line_Item::create_taxes_subtotal()'
-            ),
-            '4.6.0'
-        );
-        return self::create_taxes_subtotal($total_line_item, $transaction);
-    }
-
-
-    /**
-     * @deprecated
-     * @param EE_Line_Item   $total_line_item
-     * @param EE_Transaction $transaction
-     * @return EE_Line_Item
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     */
-    public static function create_default_event_subtotal(EE_Line_Item $total_line_item, $transaction = null)
-    {
-        EE_Error::doing_it_wrong(
-            'EEH_Line_Item::create_default_event_subtotal()',
-            sprintf(
-                esc_html__('Method replaced with %1$s', 'event_espresso'),
-                'EEH_Line_Item::create_event_subtotal()'
-            ),
-            '4.6.0'
-        );
-        return self::create_event_subtotal($total_line_item, $transaction);
-    }
+	/**
+	 * Adds a simple item (unrelated to any other model object) to the provided PARENT line item.
+	 * Does NOT automatically re-calculate the line item totals or update the related transaction.
+	 * You should call recalculate_total_including_taxes() on the grant total line item after this
+	 * to update the subtotals, and EE_Registration_Processor::calculate_reg_final_prices_per_line_item()
+	 * to keep the registration final prices in-sync with the transaction's total.
+	 *
+	 * @param EE_Line_Item $parent_line_item
+	 * @param string       $name
+	 * @param float        $unit_price
+	 * @param string       $description
+	 * @param int          $quantity
+	 * @param boolean      $taxable
+	 * @param boolean      $code if set to a value, ensures there is only one line item with that code
+	 * @return boolean success
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 */
+	public static function add_unrelated_item(
+		EE_Line_Item $parent_line_item,
+		$name,
+		$unit_price,
+		$description = '',
+		$quantity = 1,
+		$taxable = false,
+		$code = null
+	) {
+		$items_subtotal = self::get_pre_tax_subtotal($parent_line_item);
+		$line_item = EE_Line_Item::new_instance(array(
+			'LIN_name'       => $name,
+			'LIN_desc'       => $description,
+			'LIN_unit_price' => $unit_price,
+			'LIN_quantity'   => $quantity,
+			'LIN_percent'    => null,
+			'LIN_is_taxable' => $taxable,
+			'LIN_order'      => $items_subtotal instanceof EE_Line_Item ? count($items_subtotal->children()) : 0,
+			'LIN_total'      => (float) $unit_price * (int) $quantity,
+			'LIN_type'       => EEM_Line_Item::type_line_item,
+			'LIN_code'       => $code,
+		));
+		$line_item = apply_filters(
+			'FHEE__EEH_Line_Item__add_unrelated_item__line_item',
+			$line_item,
+			$parent_line_item
+		);
+		return self::add_item($parent_line_item, $line_item);
+	}
+
+
+	/**
+	 * Adds a simple item ( unrelated to any other model object) to the total line item,
+	 * in the correct spot in the line item tree. Does not automatically
+	 * re-calculate the line item totals, nor update the related transaction, nor upgrade the transaction's
+	 * registrations' final prices (which should probably change because of this).
+	 * You should call recalculate_total_including_taxes() on the grand total line item, then
+	 * update the transaction's total, and EE_Registration_Processor::update_registration_final_prices()
+	 * after using this, to keep the registration final prices in-sync with the transaction's total.
+	 *
+	 * @param EE_Line_Item $parent_line_item
+	 * @param string       $name
+	 * @param float        $percentage_amount
+	 * @param string       $description
+	 * @param boolean      $taxable
+	 * @return boolean success
+	 * @throws EE_Error
+	 */
+	public static function add_percentage_based_item(
+		EE_Line_Item $parent_line_item,
+		$name,
+		$percentage_amount,
+		$description = '',
+		$taxable = false
+	) {
+		$line_item = EE_Line_Item::new_instance(array(
+			'LIN_name'       => $name,
+			'LIN_desc'       => $description,
+			'LIN_unit_price' => 0,
+			'LIN_percent'    => $percentage_amount,
+			'LIN_quantity'   => 1,
+			'LIN_is_taxable' => $taxable,
+			'LIN_total'      => (float) ($percentage_amount * ($parent_line_item->total() / 100)),
+			'LIN_type'       => EEM_Line_Item::type_line_item,
+			'LIN_parent'     => $parent_line_item->ID(),
+		));
+		$line_item = apply_filters(
+			'FHEE__EEH_Line_Item__add_percentage_based_item__line_item',
+			$line_item
+		);
+		return $parent_line_item->add_child_line_item($line_item, false);
+	}
+
+
+	/**
+	 * Returns the new line item created by adding a purchase of the ticket
+	 * ensures that ticket line item is saved, and that cart total has been recalculated.
+	 * If this ticket has already been purchased, just increments its count.
+	 * Automatically re-calculates the line item totals and updates the related transaction. But
+	 * DOES NOT automatically upgrade the transaction's registrations' final prices (which
+	 * should probably change because of this).
+	 * You should call EE_Registration_Processor::calculate_reg_final_prices_per_line_item()
+	 * after using this, to keep the registration final prices in-sync with the transaction's total.
+	 *
+	 * @param EE_Line_Item $total_line_item grand total line item of type EEM_Line_Item::type_total
+	 * @param EE_Ticket    $ticket
+	 * @param int          $qty
+	 * @return EE_Line_Item
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 */
+	public static function add_ticket_purchase(EE_Line_Item $total_line_item, EE_Ticket $ticket, $qty = 1)
+	{
+		if (! $total_line_item instanceof EE_Line_Item || ! $total_line_item->is_total()) {
+			throw new EE_Error(
+				sprintf(
+					esc_html__(
+						'A valid line item total is required in order to add tickets. A line item of type "%s" was passed.',
+						'event_espresso'
+					),
+					$ticket->ID(),
+					$total_line_item->ID()
+				)
+			);
+		}
+		// either increment the qty for an existing ticket
+		$line_item = self::increment_ticket_qty_if_already_in_cart($total_line_item, $ticket, $qty);
+		// or add a new one
+		if (! $line_item instanceof EE_Line_Item) {
+			$line_item = self::create_ticket_line_item($total_line_item, $ticket, $qty);
+		}
+		$total_line_item->recalculate_total_including_taxes();
+		return $line_item;
+	}
+
+
+	/**
+	 * Returns the new line item created by adding a purchase of the ticket
+	 *
+	 * @param EE_Line_Item $total_line_item
+	 * @param EE_Ticket    $ticket
+	 * @param int          $qty
+	 * @return EE_Line_Item
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 */
+	public static function increment_ticket_qty_if_already_in_cart(
+		EE_Line_Item $total_line_item,
+		EE_Ticket $ticket,
+		$qty = 1
+	) {
+		$line_item = null;
+		if ($total_line_item instanceof EE_Line_Item && $total_line_item->is_total()) {
+			$ticket_line_items = EEH_Line_Item::get_ticket_line_items($total_line_item);
+			foreach ((array) $ticket_line_items as $ticket_line_item) {
+				if (
+					$ticket_line_item instanceof EE_Line_Item
+					&& (int) $ticket_line_item->OBJ_ID() === (int) $ticket->ID()
+				) {
+					$line_item = $ticket_line_item;
+					break;
+				}
+			}
+		}
+		if ($line_item instanceof EE_Line_Item) {
+			EEH_Line_Item::increment_quantity($line_item, $qty);
+			return $line_item;
+		}
+		return null;
+	}
+
+
+	/**
+	 * Increments the line item and all its children's quantity by $qty (but percent line items are unaffected).
+	 * Does NOT save or recalculate other line items totals
+	 *
+	 * @param EE_Line_Item $line_item
+	 * @param int          $qty
+	 * @return void
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 */
+	public static function increment_quantity(EE_Line_Item $line_item, $qty = 1)
+	{
+		if (! $line_item->is_percent()) {
+			$qty += $line_item->quantity();
+			$line_item->set_quantity($qty);
+			$line_item->set_total($line_item->unit_price() * $qty);
+			$line_item->save();
+		}
+		foreach ($line_item->children() as $child) {
+			if ($child->is_sub_line_item()) {
+				EEH_Line_Item::update_quantity($child, $qty);
+			}
+		}
+	}
+
+
+	/**
+	 * Decrements the line item and all its children's quantity by $qty (but percent line items are unaffected).
+	 * Does NOT save or recalculate other line items totals
+	 *
+	 * @param EE_Line_Item $line_item
+	 * @param int          $qty
+	 * @return void
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 */
+	public static function decrement_quantity(EE_Line_Item $line_item, $qty = 1)
+	{
+		if (! $line_item->is_percent()) {
+			$qty = $line_item->quantity() - $qty;
+			$qty = max($qty, 0);
+			$line_item->set_quantity($qty);
+			$line_item->set_total($line_item->unit_price() * $qty);
+			$line_item->save();
+		}
+		foreach ($line_item->children() as $child) {
+			if ($child->is_sub_line_item()) {
+				EEH_Line_Item::update_quantity($child, $qty);
+			}
+		}
+	}
+
+
+	/**
+	 * Updates the line item and its children's quantities to the specified number.
+	 * Does NOT save them or recalculate totals.
+	 *
+	 * @param EE_Line_Item $line_item
+	 * @param int          $new_quantity
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 */
+	public static function update_quantity(EE_Line_Item $line_item, $new_quantity)
+	{
+		if (! $line_item->is_percent()) {
+			$line_item->set_quantity($new_quantity);
+			$line_item->set_total($line_item->unit_price() * $new_quantity);
+			$line_item->save();
+		}
+		foreach ($line_item->children() as $child) {
+			if ($child->is_sub_line_item()) {
+				EEH_Line_Item::update_quantity($child, $new_quantity);
+			}
+		}
+	}
+
+
+	/**
+	 * Returns the new line item created by adding a purchase of the ticket
+	 *
+	 * @param EE_Line_Item $total_line_item of type EEM_Line_Item::type_total
+	 * @param EE_Ticket    $ticket
+	 * @param int          $qty
+	 * @return EE_Line_Item
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 */
+	public static function create_ticket_line_item(EE_Line_Item $total_line_item, EE_Ticket $ticket, $qty = 1)
+	{
+		$datetimes = $ticket->datetimes();
+		$first_datetime = reset($datetimes);
+		$first_datetime_name = esc_html__('Event', 'event_espresso');
+		if ($first_datetime instanceof EE_Datetime && $first_datetime->event() instanceof EE_Event) {
+			$first_datetime_name = $first_datetime->event()->name();
+		}
+		$event = sprintf(_x('(For %1$s)', '(For Event Name)', 'event_espresso'), $first_datetime_name);
+		// get event subtotal line
+		$events_sub_total = self::get_event_line_item_for_ticket($total_line_item, $ticket);
+		// add $ticket to cart
+		$line_item = EE_Line_Item::new_instance(array(
+			'LIN_name'       => $ticket->name(),
+			'LIN_desc'       => $ticket->description() !== '' ? $ticket->description() . ' ' . $event : $event,
+			'LIN_unit_price' => $ticket->price(),
+			'LIN_quantity'   => $qty,
+			'LIN_is_taxable' => $ticket->taxable(),
+			'LIN_order'      => count($events_sub_total->children()),
+			'LIN_total'      => $ticket->price() * $qty,
+			'LIN_type'       => EEM_Line_Item::type_line_item,
+			'OBJ_ID'         => $ticket->ID(),
+			'OBJ_type'       => EEM_Line_Item::OBJ_TYPE_TICKET,
+		));
+		$line_item = apply_filters(
+			'FHEE__EEH_Line_Item__create_ticket_line_item__line_item',
+			$line_item
+		);
+		$events_sub_total->add_child_line_item($line_item);
+		// now add the sub-line items
+		$running_total_for_ticket = 0;
+		foreach ($ticket->prices(array('order_by' => array('PRC_order' => 'ASC'))) as $price) {
+			$sign = $price->is_discount() ? -1 : 1;
+			$price_total = $price->is_percent()
+				? $running_total_for_ticket * $price->amount() / 100
+				: $price->amount() * $qty;
+			$sub_line_item = EE_Line_Item::new_instance(array(
+				'LIN_name'       => $price->name(),
+				'LIN_desc'       => $price->desc(),
+				'LIN_quantity'   => $price->is_percent() ? null : $qty,
+				'LIN_is_taxable' => false,
+				'LIN_order'      => $price->order(),
+				'LIN_total'      => $sign * $price_total,
+				'LIN_type'       => EEM_Line_Item::type_sub_line_item,
+				'OBJ_ID'         => $price->ID(),
+				'OBJ_type'       => EEM_Line_Item::OBJ_TYPE_PRICE,
+			));
+			$sub_line_item = apply_filters(
+				'FHEE__EEH_Line_Item__create_ticket_line_item__sub_line_item',
+				$sub_line_item
+			);
+			if ($price->is_percent()) {
+				$sub_line_item->set_percent($sign * $price->amount());
+			} else {
+				$sub_line_item->set_unit_price($sign * $price->amount());
+			}
+			$running_total_for_ticket += $price_total;
+			$line_item->add_child_line_item($sub_line_item);
+		}
+		return $line_item;
+	}
+
+
+	/**
+	 * Adds the specified item under the pre-tax-sub-total line item. Automatically
+	 * re-calculates the line item totals and updates the related transaction. But
+	 * DOES NOT automatically upgrade the transaction's registrations' final prices (which
+	 * should probably change because of this).
+	 * You should call EE_Registration_Processor::calculate_reg_final_prices_per_line_item()
+	 * after using this, to keep the registration final prices in-sync with the transaction's total.
+	 *
+	 * @param EE_Line_Item $total_line_item
+	 * @param EE_Line_Item $item to be added
+	 * @return boolean
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 */
+	public static function add_item(EE_Line_Item $total_line_item, EE_Line_Item $item)
+	{
+		$pre_tax_subtotal = self::get_pre_tax_subtotal($total_line_item);
+		if ($pre_tax_subtotal instanceof EE_Line_Item) {
+			$success = $pre_tax_subtotal->add_child_line_item($item);
+		} else {
+			return false;
+		}
+		$total_line_item->recalculate_total_including_taxes();
+		return $success;
+	}
+
+
+	/**
+	 * cancels an existing ticket line item,
+	 * by decrementing it's quantity by 1 and adding a new "type_cancellation" sub-line-item.
+	 * ALL totals and subtotals will NEED TO BE UPDATED after performing this action
+	 *
+	 * @param EE_Line_Item $ticket_line_item
+	 * @param int          $qty
+	 * @return bool success
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 */
+	public static function cancel_ticket_line_item(EE_Line_Item $ticket_line_item, $qty = 1)
+	{
+		// validate incoming line_item
+		if ($ticket_line_item->OBJ_type() !== EEM_Line_Item::OBJ_TYPE_TICKET) {
+			throw new EE_Error(
+				sprintf(
+					esc_html__(
+						'The supplied line item must have an Object Type of "Ticket", not %1$s.',
+						'event_espresso'
+					),
+					$ticket_line_item->type()
+				)
+			);
+		}
+		if ($ticket_line_item->quantity() < $qty) {
+			throw new EE_Error(
+				sprintf(
+					esc_html__(
+						'Can not cancel %1$d ticket(s) because the supplied line item has a quantity of %2$d.',
+						'event_espresso'
+					),
+					$qty,
+					$ticket_line_item->quantity()
+				)
+			);
+		}
+		// decrement ticket quantity; don't rely on auto-fixing when recalculating totals to do this
+		$ticket_line_item->set_quantity($ticket_line_item->quantity() - $qty);
+		foreach ($ticket_line_item->children() as $child_line_item) {
+			if (
+				$child_line_item->is_sub_line_item()
+				&& ! $child_line_item->is_percent()
+				&& ! $child_line_item->is_cancellation()
+			) {
+				$child_line_item->set_quantity($child_line_item->quantity() - $qty);
+			}
+		}
+		// get cancellation sub line item
+		$cancellation_line_item = EEH_Line_Item::get_descendants_of_type(
+			$ticket_line_item,
+			EEM_Line_Item::type_cancellation
+		);
+		$cancellation_line_item = reset($cancellation_line_item);
+		// verify that this ticket was indeed previously cancelled
+		if ($cancellation_line_item instanceof EE_Line_Item) {
+			// increment cancelled quantity
+			$cancellation_line_item->set_quantity($cancellation_line_item->quantity() + $qty);
+		} else {
+			// create cancellation sub line item
+			$cancellation_line_item = EE_Line_Item::new_instance(array(
+				'LIN_name'       => esc_html__('Cancellation', 'event_espresso'),
+				'LIN_desc'       => sprintf(
+					esc_html_x(
+						'Cancelled %1$s : %2$s',
+						'Cancelled Ticket Name : 2015-01-01 11:11',
+						'event_espresso'
+					),
+					$ticket_line_item->name(),
+					current_time(get_option('date_format') . ' ' . get_option('time_format'))
+				),
+				'LIN_unit_price' => 0, // $ticket_line_item->unit_price()
+				'LIN_quantity'   => $qty,
+				'LIN_is_taxable' => $ticket_line_item->is_taxable(),
+				'LIN_order'      => count($ticket_line_item->children()),
+				'LIN_total'      => 0, // $ticket_line_item->unit_price()
+				'LIN_type'       => EEM_Line_Item::type_cancellation,
+			));
+			$ticket_line_item->add_child_line_item($cancellation_line_item);
+		}
+		if ($ticket_line_item->save_this_and_descendants() > 0) {
+			// decrement parent line item quantity
+			$event_line_item = $ticket_line_item->parent();
+			if (
+				$event_line_item instanceof EE_Line_Item
+				&& $event_line_item->OBJ_type() === EEM_Line_Item::OBJ_TYPE_EVENT
+			) {
+				$event_line_item->set_quantity($event_line_item->quantity() - $qty);
+				$event_line_item->save();
+			}
+			EEH_Line_Item::get_grand_total_and_recalculate_everything($ticket_line_item);
+			return true;
+		}
+		return false;
+	}
+
+
+	/**
+	 * reinstates (un-cancels?) a previously canceled ticket line item,
+	 * by incrementing it's quantity by 1, and decrementing it's "type_cancellation" sub-line-item.
+	 * ALL totals and subtotals will NEED TO BE UPDATED after performing this action
+	 *
+	 * @param EE_Line_Item $ticket_line_item
+	 * @param int          $qty
+	 * @return bool success
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 */
+	public static function reinstate_canceled_ticket_line_item(EE_Line_Item $ticket_line_item, $qty = 1)
+	{
+		// validate incoming line_item
+		if ($ticket_line_item->OBJ_type() !== EEM_Line_Item::OBJ_TYPE_TICKET) {
+			throw new EE_Error(
+				sprintf(
+					esc_html__(
+						'The supplied line item must have an Object Type of "Ticket", not %1$s.',
+						'event_espresso'
+					),
+					$ticket_line_item->type()
+				)
+			);
+		}
+		// get cancellation sub line item
+		$cancellation_line_item = EEH_Line_Item::get_descendants_of_type(
+			$ticket_line_item,
+			EEM_Line_Item::type_cancellation
+		);
+		$cancellation_line_item = reset($cancellation_line_item);
+		// verify that this ticket was indeed previously cancelled
+		if (! $cancellation_line_item instanceof EE_Line_Item) {
+			return false;
+		}
+		if ($cancellation_line_item->quantity() > $qty) {
+			// decrement cancelled quantity
+			$cancellation_line_item->set_quantity($cancellation_line_item->quantity() - $qty);
+		} elseif ($cancellation_line_item->quantity() === $qty) {
+			// decrement cancelled quantity in case anyone still has the object kicking around
+			$cancellation_line_item->set_quantity($cancellation_line_item->quantity() - $qty);
+			// delete because quantity will end up as 0
+			$cancellation_line_item->delete();
+			// and attempt to destroy the object,
+			// even though PHP won't actually destroy it until it needs the memory
+			unset($cancellation_line_item);
+		} else {
+			// what ?!?! negative quantity ?!?!
+			throw new EE_Error(
+				sprintf(
+					esc_html__(
+						'Can not reinstate %1$d cancelled ticket(s) because the cancelled ticket quantity is only %2$d.',
+						'event_espresso'
+					),
+					$qty,
+					$cancellation_line_item->quantity()
+				)
+			);
+		}
+		// increment ticket quantity
+		$ticket_line_item->set_quantity($ticket_line_item->quantity() + $qty);
+		if ($ticket_line_item->save_this_and_descendants() > 0) {
+			// increment parent line item quantity
+			$event_line_item = $ticket_line_item->parent();
+			if (
+				$event_line_item instanceof EE_Line_Item
+				&& $event_line_item->OBJ_type() === EEM_Line_Item::OBJ_TYPE_EVENT
+			) {
+				$event_line_item->set_quantity($event_line_item->quantity() + $qty);
+			}
+			EEH_Line_Item::get_grand_total_and_recalculate_everything($ticket_line_item);
+			return true;
+		}
+		return false;
+	}
+
+
+	/**
+	 * calls EEH_Line_Item::find_transaction_grand_total_for_line_item()
+	 * then EE_Line_Item::recalculate_total_including_taxes() on the result
+	 *
+	 * @param EE_Line_Item $line_item
+	 * @return float
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 */
+	public static function get_grand_total_and_recalculate_everything(EE_Line_Item $line_item)
+	{
+		$grand_total_line_item = EEH_Line_Item::find_transaction_grand_total_for_line_item($line_item);
+		return $grand_total_line_item->recalculate_total_including_taxes();
+	}
+
+
+	/**
+	 * Gets the line item which contains the subtotal of all the items
+	 *
+	 * @param EE_Line_Item $total_line_item of type EEM_Line_Item::type_total
+	 * @return EE_Line_Item
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 */
+	public static function get_pre_tax_subtotal(EE_Line_Item $total_line_item)
+	{
+		$pre_tax_subtotal = $total_line_item->get_child_line_item('pre-tax-subtotal');
+		return $pre_tax_subtotal instanceof EE_Line_Item
+			? $pre_tax_subtotal
+			: self::create_pre_tax_subtotal($total_line_item);
+	}
+
+
+	/**
+	 * Gets the line item for the taxes subtotal
+	 *
+	 * @param EE_Line_Item $total_line_item of type EEM_Line_Item::type_total
+	 * @return EE_Line_Item
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 */
+	public static function get_taxes_subtotal(EE_Line_Item $total_line_item)
+	{
+		$taxes = $total_line_item->get_child_line_item('taxes');
+		return $taxes ? $taxes : self::create_taxes_subtotal($total_line_item);
+	}
+
+
+	/**
+	 * sets the TXN ID on an EE_Line_Item if passed a valid EE_Transaction object
+	 *
+	 * @param EE_Line_Item   $line_item
+	 * @param EE_Transaction $transaction
+	 * @return void
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 */
+	public static function set_TXN_ID(EE_Line_Item $line_item, $transaction = null)
+	{
+		if ($transaction) {
+			/** @type EEM_Transaction $EEM_Transaction */
+			$EEM_Transaction = EE_Registry::instance()->load_model('Transaction');
+			$TXN_ID = $EEM_Transaction->ensure_is_ID($transaction);
+			$line_item->set_TXN_ID($TXN_ID);
+		}
+	}
+
+
+	/**
+	 * Creates a new default total line item for the transaction,
+	 * and its tickets subtotal and taxes subtotal line items (and adds the
+	 * existing taxes as children of the taxes subtotal line item)
+	 *
+	 * @param EE_Transaction $transaction
+	 * @return EE_Line_Item of type total
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 */
+	public static function create_total_line_item($transaction = null)
+	{
+		$total_line_item = EE_Line_Item::new_instance(array(
+			'LIN_code' => 'total',
+			'LIN_name' => esc_html__('Grand Total', 'event_espresso'),
+			'LIN_type' => EEM_Line_Item::type_total,
+			'OBJ_type' => EEM_Line_Item::OBJ_TYPE_TRANSACTION,
+		));
+		$total_line_item = apply_filters(
+			'FHEE__EEH_Line_Item__create_total_line_item__total_line_item',
+			$total_line_item
+		);
+		self::set_TXN_ID($total_line_item, $transaction);
+		self::create_pre_tax_subtotal($total_line_item, $transaction);
+		self::create_taxes_subtotal($total_line_item, $transaction);
+		return $total_line_item;
+	}
+
+
+	/**
+	 * Creates a default items subtotal line item
+	 *
+	 * @param EE_Line_Item   $total_line_item
+	 * @param EE_Transaction $transaction
+	 * @return EE_Line_Item
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 */
+	protected static function create_pre_tax_subtotal(EE_Line_Item $total_line_item, $transaction = null)
+	{
+		$pre_tax_line_item = EE_Line_Item::new_instance(array(
+			'LIN_code' => 'pre-tax-subtotal',
+			'LIN_name' => esc_html__('Pre-Tax Subtotal', 'event_espresso'),
+			'LIN_type' => EEM_Line_Item::type_sub_total,
+		));
+		$pre_tax_line_item = apply_filters(
+			'FHEE__EEH_Line_Item__create_pre_tax_subtotal__pre_tax_line_item',
+			$pre_tax_line_item
+		);
+		self::set_TXN_ID($pre_tax_line_item, $transaction);
+		$total_line_item->add_child_line_item($pre_tax_line_item);
+		self::create_event_subtotal($pre_tax_line_item, $transaction);
+		return $pre_tax_line_item;
+	}
+
+
+	/**
+	 * Creates a line item for the taxes subtotal and finds all the tax prices
+	 * and applies taxes to it
+	 *
+	 * @param EE_Line_Item   $total_line_item of type EEM_Line_Item::type_total
+	 * @param EE_Transaction $transaction
+	 * @return EE_Line_Item
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 */
+	protected static function create_taxes_subtotal(EE_Line_Item $total_line_item, $transaction = null)
+	{
+		$tax_line_item = EE_Line_Item::new_instance(array(
+			'LIN_code'  => 'taxes',
+			'LIN_name'  => esc_html__('Taxes', 'event_espresso'),
+			'LIN_type'  => EEM_Line_Item::type_tax_sub_total,
+			'LIN_order' => 1000,// this should always come last
+		));
+		$tax_line_item = apply_filters(
+			'FHEE__EEH_Line_Item__create_taxes_subtotal__tax_line_item',
+			$tax_line_item
+		);
+		self::set_TXN_ID($tax_line_item, $transaction);
+		$total_line_item->add_child_line_item($tax_line_item);
+		// and lastly, add the actual taxes
+		self::apply_taxes($total_line_item);
+		return $tax_line_item;
+	}
+
+
+	/**
+	 * Creates a default items subtotal line item
+	 *
+	 * @param EE_Line_Item   $pre_tax_line_item
+	 * @param EE_Transaction $transaction
+	 * @param EE_Event       $event
+	 * @return EE_Line_Item
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 */
+	public static function create_event_subtotal(EE_Line_Item $pre_tax_line_item, $transaction = null, $event = null)
+	{
+		$event_line_item = EE_Line_Item::new_instance(array(
+			'LIN_code' => self::get_event_code($event),
+			'LIN_name' => self::get_event_name($event),
+			'LIN_desc' => self::get_event_desc($event),
+			'LIN_type' => EEM_Line_Item::type_sub_total,
+			'OBJ_type' => EEM_Line_Item::OBJ_TYPE_EVENT,
+			'OBJ_ID'   => $event instanceof EE_Event ? $event->ID() : 0,
+		));
+		$event_line_item = apply_filters(
+			'FHEE__EEH_Line_Item__create_event_subtotal__event_line_item',
+			$event_line_item
+		);
+		self::set_TXN_ID($event_line_item, $transaction);
+		$pre_tax_line_item->add_child_line_item($event_line_item);
+		return $event_line_item;
+	}
+
+
+	/**
+	 * Gets what the event ticket's code SHOULD be
+	 *
+	 * @param EE_Event $event
+	 * @return string
+	 * @throws EE_Error
+	 */
+	public static function get_event_code($event)
+	{
+		return 'event-' . ($event instanceof EE_Event ? $event->ID() : '0');
+	}
+
+
+	/**
+	 * Gets the event name
+	 *
+	 * @param EE_Event $event
+	 * @return string
+	 * @throws EE_Error
+	 */
+	public static function get_event_name($event)
+	{
+		return $event instanceof EE_Event
+			? mb_substr($event->name(), 0, 245)
+			: esc_html__('Event', 'event_espresso');
+	}
+
+
+	/**
+	 * Gets the event excerpt
+	 *
+	 * @param EE_Event $event
+	 * @return string
+	 * @throws EE_Error
+	 */
+	public static function get_event_desc($event)
+	{
+		return $event instanceof EE_Event ? $event->short_description() : '';
+	}
+
+
+	/**
+	 * Given the grand total line item and a ticket, finds the event sub-total
+	 * line item the ticket's purchase should be added onto
+	 *
+	 * @access public
+	 * @param EE_Line_Item $grand_total the grand total line item
+	 * @param EE_Ticket    $ticket
+	 * @return EE_Line_Item
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 */
+	public static function get_event_line_item_for_ticket(EE_Line_Item $grand_total, EE_Ticket $ticket)
+	{
+		$first_datetime = $ticket->first_datetime();
+		if (! $first_datetime instanceof EE_Datetime) {
+			throw new EE_Error(
+				sprintf(
+					esc_html__('The supplied ticket (ID %d) has no datetimes', 'event_espresso'),
+					$ticket->ID()
+				)
+			);
+		}
+		$event = $first_datetime->event();
+		if (! $event instanceof EE_Event) {
+			throw new EE_Error(
+				sprintf(
+					esc_html__(
+						'The supplied ticket (ID %d) has no event data associated with it.',
+						'event_espresso'
+					),
+					$ticket->ID()
+				)
+			);
+		}
+		$events_sub_total = EEH_Line_Item::get_event_line_item($grand_total, $event);
+		if (! $events_sub_total instanceof EE_Line_Item) {
+			throw new EE_Error(
+				sprintf(
+					esc_html__(
+						'There is no events sub-total for ticket %s on total line item %d',
+						'event_espresso'
+					),
+					$ticket->ID(),
+					$grand_total->ID()
+				)
+			);
+		}
+		return $events_sub_total;
+	}
+
+
+	/**
+	 * Gets the event line item
+	 *
+	 * @param EE_Line_Item $grand_total
+	 * @param EE_Event     $event
+	 * @return EE_Line_Item for the event subtotal which is a child of $grand_total
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 */
+	public static function get_event_line_item(EE_Line_Item $grand_total, $event)
+	{
+		/** @type EE_Event $event */
+		$event = EEM_Event::instance()->ensure_is_obj($event, true);
+		$event_line_item = null;
+		$found = false;
+		foreach (EEH_Line_Item::get_event_subtotals($grand_total) as $event_line_item) {
+			// default event subtotal, we should only ever find this the first time this method is called
+			if (! $event_line_item->OBJ_ID()) {
+				// let's use this! but first... set the event details
+				EEH_Line_Item::set_event_subtotal_details($event_line_item, $event);
+				$found = true;
+				break;
+			}
+			if ($event_line_item->OBJ_ID() === $event->ID()) {
+				// found existing line item for this event in the cart, so break out of loop and use this one
+				$found = true;
+				break;
+			}
+		}
+		if (! $found) {
+			// there is no event sub-total yet, so add it
+			$pre_tax_subtotal = EEH_Line_Item::get_pre_tax_subtotal($grand_total);
+			// create a new "event" subtotal below that
+			$event_line_item = EEH_Line_Item::create_event_subtotal($pre_tax_subtotal, null, $event);
+			// and set the event details
+			EEH_Line_Item::set_event_subtotal_details($event_line_item, $event);
+		}
+		return $event_line_item;
+	}
+
+
+	/**
+	 * Creates a default items subtotal line item
+	 *
+	 * @param EE_Line_Item   $event_line_item
+	 * @param EE_Event       $event
+	 * @param EE_Transaction $transaction
+	 * @return void
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 */
+	public static function set_event_subtotal_details(
+		EE_Line_Item $event_line_item,
+		EE_Event $event,
+		$transaction = null
+	) {
+		if ($event instanceof EE_Event) {
+			$event_line_item->set_code(self::get_event_code($event));
+			$event_line_item->set_name(self::get_event_name($event));
+			$event_line_item->set_desc(self::get_event_desc($event));
+			$event_line_item->set_OBJ_ID($event->ID());
+		}
+		self::set_TXN_ID($event_line_item, $transaction);
+	}
+
+
+	/**
+	 * Finds what taxes should apply, adds them as tax line items under the taxes sub-total,
+	 * and recalculates the taxes sub-total and the grand total. Resets the taxes, so
+	 * any old taxes are removed
+	 *
+	 * @param EE_Line_Item $total_line_item of type EEM_Line_Item::type_total
+	 * @param bool         $update_txn_status
+	 * @return bool
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 * @throws RuntimeException
+	 */
+	public static function apply_taxes(EE_Line_Item $total_line_item, $update_txn_status = false)
+	{
+		/** @type EEM_Price $EEM_Price */
+		$EEM_Price = EE_Registry::instance()->load_model('Price');
+		// get array of taxes via Price Model
+		$ordered_taxes = $EEM_Price->get_all_prices_that_are_taxes();
+		ksort($ordered_taxes);
+		$taxes_line_item = self::get_taxes_subtotal($total_line_item);
+		// just to be safe, remove its old tax line items
+		$deleted = $taxes_line_item->delete_children_line_items();
+		$updates = false;
+		// loop thru taxes
+		foreach ($ordered_taxes as $order => $taxes) {
+			foreach ($taxes as $tax) {
+				if ($tax instanceof EE_Price) {
+					$tax_line_item = EE_Line_Item::new_instance(
+						array(
+							'LIN_name'       => $tax->name(),
+							'LIN_desc'       => $tax->desc(),
+							'LIN_percent'    => $tax->amount(),
+							'LIN_is_taxable' => false,
+							'LIN_order'      => $order,
+							'LIN_total'      => 0,
+							'LIN_type'       => EEM_Line_Item::type_tax,
+							'OBJ_type'       => EEM_Line_Item::OBJ_TYPE_PRICE,
+							'OBJ_ID'         => $tax->ID(),
+						)
+					);
+					$tax_line_item = apply_filters(
+						'FHEE__EEH_Line_Item__apply_taxes__tax_line_item',
+						$tax_line_item
+					);
+					$updates = $taxes_line_item->add_child_line_item($tax_line_item) ?
+						true :
+						$updates;
+				}
+			}
+		}
+		// only recalculate totals if something changed
+		if ($deleted || $updates) {
+			$total_line_item->recalculate_total_including_taxes($update_txn_status);
+			return true;
+		}
+		return false;
+	}
+
+
+	/**
+	 * Ensures that taxes have been applied to the order, if not applies them.
+	 * Returns the total amount of tax
+	 *
+	 * @param EE_Line_Item $total_line_item of type EEM_Line_Item::type_total
+	 * @return float
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 */
+	public static function ensure_taxes_applied($total_line_item)
+	{
+		$taxes_subtotal = self::get_taxes_subtotal($total_line_item);
+		if (! $taxes_subtotal->children()) {
+			self::apply_taxes($total_line_item);
+		}
+		return $taxes_subtotal->total();
+	}
+
+
+	/**
+	 * Deletes ALL children of the passed line item
+	 *
+	 * @param EE_Line_Item $parent_line_item
+	 * @return bool
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 */
+	public static function delete_all_child_items(EE_Line_Item $parent_line_item)
+	{
+		$deleted = 0;
+		foreach ($parent_line_item->children() as $child_line_item) {
+			if ($child_line_item instanceof EE_Line_Item) {
+				$deleted += EEH_Line_Item::delete_all_child_items($child_line_item);
+				if ($child_line_item->ID()) {
+					$child_line_item->delete();
+					unset($child_line_item);
+				} else {
+					$parent_line_item->delete_child_line_item($child_line_item->code());
+				}
+				$deleted++;
+			}
+		}
+		return $deleted;
+	}
+
+
+	/**
+	 * Deletes the line items as indicated by the line item code(s) provided,
+	 * regardless of where they're found in the line item tree. Automatically
+	 * re-calculates the line item totals and updates the related transaction. But
+	 * DOES NOT automatically upgrade the transaction's registrations' final prices (which
+	 * should probably change because of this).
+	 * You should call EE_Registration_Processor::calculate_reg_final_prices_per_line_item()
+	 * after using this, to keep the registration final prices in-sync with the transaction's total.
+	 *
+	 * @param EE_Line_Item      $total_line_item of type EEM_Line_Item::type_total
+	 * @param array|bool|string $line_item_codes
+	 * @return int number of items successfully removed
+	 * @throws EE_Error
+	 */
+	public static function delete_items(EE_Line_Item $total_line_item, $line_item_codes = false)
+	{
+
+		if ($total_line_item->type() !== EEM_Line_Item::type_total) {
+			EE_Error::doing_it_wrong(
+				'EEH_Line_Item::delete_items',
+				esc_html__(
+					'This static method should only be called with a TOTAL line item, otherwise we won\'t recalculate the totals correctly',
+					'event_espresso'
+				),
+				'4.6.18'
+			);
+		}
+		do_action('AHEE_log', __FILE__, __FUNCTION__, '');
+
+		// check if only a single line_item_id was passed
+		if (! empty($line_item_codes) && ! is_array($line_item_codes)) {
+			// place single line_item_id in an array to appear as multiple line_item_ids
+			$line_item_codes = array($line_item_codes);
+		}
+		$removals = 0;
+		// cycle thru line_item_ids
+		foreach ($line_item_codes as $line_item_id) {
+			$removals += $total_line_item->delete_child_line_item($line_item_id);
+		}
+
+		if ($removals > 0) {
+			$total_line_item->recalculate_taxes_and_tax_total();
+			return $removals;
+		} else {
+			return false;
+		}
+	}
+
+
+	/**
+	 * Overwrites the previous tax by clearing out the old taxes, and creates a new
+	 * tax and updates the total line item accordingly
+	 *
+	 * @param EE_Line_Item $total_line_item
+	 * @param float        $amount
+	 * @param string       $name
+	 * @param string       $description
+	 * @param string       $code
+	 * @param boolean      $add_to_existing_line_item
+	 *                          if true, and a duplicate line item with the same code is found,
+	 *                          $amount will be added onto it; otherwise will simply set the taxes to match $amount
+	 * @return EE_Line_Item the new tax line item created
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 */
+	public static function set_total_tax_to(
+		EE_Line_Item $total_line_item,
+		$amount,
+		$name = null,
+		$description = null,
+		$code = null,
+		$add_to_existing_line_item = false
+	) {
+		$tax_subtotal = self::get_taxes_subtotal($total_line_item);
+		$taxable_total = $total_line_item->taxable_total();
+
+		if ($add_to_existing_line_item) {
+			$new_tax = $tax_subtotal->get_child_line_item($code);
+			EEM_Line_Item::instance()->delete(
+				array(array('LIN_code' => array('!=', $code), 'LIN_parent' => $tax_subtotal->ID()))
+			);
+		} else {
+			$new_tax = null;
+			$tax_subtotal->delete_children_line_items();
+		}
+		if ($new_tax) {
+			$new_tax->set_total($new_tax->total() + $amount);
+			$new_tax->set_percent($taxable_total ? $new_tax->total() / $taxable_total * 100 : 0);
+		} else {
+			// no existing tax item. Create it
+			$new_tax = EE_Line_Item::new_instance(array(
+				'TXN_ID'      => $total_line_item->TXN_ID(),
+				'LIN_name'    => $name ? $name : esc_html__('Tax', 'event_espresso'),
+				'LIN_desc'    => $description ? $description : '',
+				'LIN_percent' => $taxable_total ? ($amount / $taxable_total * 100) : 0,
+				'LIN_total'   => $amount,
+				'LIN_parent'  => $tax_subtotal->ID(),
+				'LIN_type'    => EEM_Line_Item::type_tax,
+				'LIN_code'    => $code,
+			));
+		}
+
+		$new_tax = apply_filters(
+			'FHEE__EEH_Line_Item__set_total_tax_to__new_tax_subtotal',
+			$new_tax,
+			$total_line_item
+		);
+		$new_tax->save();
+		$tax_subtotal->set_total($new_tax->total());
+		$tax_subtotal->save();
+		$total_line_item->recalculate_total_including_taxes();
+		return $new_tax;
+	}
+
+
+	/**
+	 * Makes all the line items which are children of $line_item taxable (or not).
+	 * Does NOT save the line items
+	 *
+	 * @param EE_Line_Item $line_item
+	 * @param boolean      $taxable
+	 * @param string       $code_substring_for_whitelist if this string is part of the line item's code
+	 *                                                   it will be whitelisted (ie, except from becoming taxable)
+	 * @throws EE_Error
+	 */
+	public static function set_line_items_taxable(
+		EE_Line_Item $line_item,
+		$taxable = true,
+		$code_substring_for_whitelist = null
+	) {
+		$whitelisted = false;
+		if ($code_substring_for_whitelist !== null) {
+			$whitelisted = strpos($line_item->code(), $code_substring_for_whitelist) !== false;
+		}
+		if (! $whitelisted && $line_item->is_line_item()) {
+			$line_item->set_is_taxable($taxable);
+		}
+		foreach ($line_item->children() as $child_line_item) {
+			EEH_Line_Item::set_line_items_taxable(
+				$child_line_item,
+				$taxable,
+				$code_substring_for_whitelist
+			);
+		}
+	}
+
+
+	/**
+	 * Gets all descendants that are event subtotals
+	 *
+	 * @uses  EEH_Line_Item::get_subtotals_of_object_type()
+	 * @param EE_Line_Item $parent_line_item - the line item to find descendants of
+	 * @return EE_Line_Item[]
+	 * @throws EE_Error
+	 */
+	public static function get_event_subtotals(EE_Line_Item $parent_line_item)
+	{
+		return self::get_subtotals_of_object_type($parent_line_item, EEM_Line_Item::OBJ_TYPE_EVENT);
+	}
+
+
+	/**
+	 * Gets all descendants subtotals that match the supplied object type
+	 *
+	 * @uses  EEH_Line_Item::_get_descendants_by_type_and_object_type()
+	 * @param EE_Line_Item $parent_line_item - the line item to find descendants of
+	 * @param string       $obj_type
+	 * @return EE_Line_Item[]
+	 * @throws EE_Error
+	 */
+	public static function get_subtotals_of_object_type(EE_Line_Item $parent_line_item, $obj_type = '')
+	{
+		return self::_get_descendants_by_type_and_object_type(
+			$parent_line_item,
+			EEM_Line_Item::type_sub_total,
+			$obj_type
+		);
+	}
+
+
+	/**
+	 * Gets all descendants that are tickets
+	 *
+	 * @uses  EEH_Line_Item::get_line_items_of_object_type()
+	 * @param EE_Line_Item $parent_line_item - the line item to find descendants of
+	 * @return EE_Line_Item[]
+	 * @throws EE_Error
+	 */
+	public static function get_ticket_line_items(EE_Line_Item $parent_line_item)
+	{
+		return self::get_line_items_of_object_type(
+			$parent_line_item,
+			EEM_Line_Item::OBJ_TYPE_TICKET
+		);
+	}
+
+
+	/**
+	 * Gets all descendants subtotals that match the supplied object type
+	 *
+	 * @uses  EEH_Line_Item::_get_descendants_by_type_and_object_type()
+	 * @param EE_Line_Item $parent_line_item - the line item to find descendants of
+	 * @param string       $obj_type
+	 * @return EE_Line_Item[]
+	 * @throws EE_Error
+	 */
+	public static function get_line_items_of_object_type(EE_Line_Item $parent_line_item, $obj_type = '')
+	{
+		return self::_get_descendants_by_type_and_object_type(
+			$parent_line_item,
+			EEM_Line_Item::type_line_item,
+			$obj_type
+		);
+	}
+
+
+	/**
+	 * Gets all the descendants (ie, children or children of children etc) that are of the type 'tax'
+	 *
+	 * @uses  EEH_Line_Item::get_descendants_of_type()
+	 * @param EE_Line_Item $parent_line_item - the line item to find descendants of
+	 * @return EE_Line_Item[]
+	 * @throws EE_Error
+	 */
+	public static function get_tax_descendants(EE_Line_Item $parent_line_item)
+	{
+		return EEH_Line_Item::get_descendants_of_type(
+			$parent_line_item,
+			EEM_Line_Item::type_tax
+		);
+	}
+
+
+	/**
+	 * Gets all the real items purchased which are children of this item
+	 *
+	 * @uses  EEH_Line_Item::get_descendants_of_type()
+	 * @param EE_Line_Item $parent_line_item - the line item to find descendants of
+	 * @return EE_Line_Item[]
+	 * @throws EE_Error
+	 */
+	public static function get_line_item_descendants(EE_Line_Item $parent_line_item)
+	{
+		return EEH_Line_Item::get_descendants_of_type(
+			$parent_line_item,
+			EEM_Line_Item::type_line_item
+		);
+	}
+
+
+	/**
+	 * Gets all descendants of supplied line item that match the supplied line item type
+	 *
+	 * @uses  EEH_Line_Item::_get_descendants_by_type_and_object_type()
+	 * @param EE_Line_Item $parent_line_item - the line item to find descendants of
+	 * @param string       $line_item_type   one of the EEM_Line_Item constants
+	 * @return EE_Line_Item[]
+	 * @throws EE_Error
+	 */
+	public static function get_descendants_of_type(EE_Line_Item $parent_line_item, $line_item_type)
+	{
+		return self::_get_descendants_by_type_and_object_type(
+			$parent_line_item,
+			$line_item_type,
+			null
+		);
+	}
+
+
+	/**
+	 * Gets all descendants of supplied line item that match the supplied line item type and possibly the object type
+	 * as well
+	 *
+	 * @param EE_Line_Item  $parent_line_item - the line item to find descendants of
+	 * @param string        $line_item_type   one of the EEM_Line_Item constants
+	 * @param string | NULL $obj_type         object model class name (minus prefix) or NULL to ignore object type when
+	 *                                        searching
+	 * @return EE_Line_Item[]
+	 * @throws EE_Error
+	 */
+	protected static function _get_descendants_by_type_and_object_type(
+		EE_Line_Item $parent_line_item,
+		$line_item_type,
+		$obj_type = null
+	) {
+		$objects = array();
+		foreach ($parent_line_item->children() as $child_line_item) {
+			if ($child_line_item instanceof EE_Line_Item) {
+				if (
+					$child_line_item->type() === $line_item_type
+					&& (
+						$child_line_item->OBJ_type() === $obj_type || $obj_type === null
+					)
+				) {
+					$objects[] = $child_line_item;
+				} else {
+					// go-through-all-its children looking for more matches
+					$objects = array_merge(
+						$objects,
+						self::_get_descendants_by_type_and_object_type(
+							$child_line_item,
+							$line_item_type,
+							$obj_type
+						)
+					);
+				}
+			}
+		}
+		return $objects;
+	}
+
+
+	/**
+	 * Gets all descendants subtotals that match the supplied object type
+	 *
+	 * @uses  EEH_Line_Item::_get_descendants_by_type_and_object_type()
+	 * @param EE_Line_Item $parent_line_item - the line item to find descendants of
+	 * @param string       $OBJ_type         object type (like Event)
+	 * @param array        $OBJ_IDs          array of OBJ_IDs
+	 * @return EE_Line_Item[]
+	 * @throws EE_Error
+	 */
+	public static function get_line_items_by_object_type_and_IDs(
+		EE_Line_Item $parent_line_item,
+		$OBJ_type = '',
+		$OBJ_IDs = array()
+	) {
+		return self::_get_descendants_by_object_type_and_object_ID(
+			$parent_line_item,
+			$OBJ_type,
+			$OBJ_IDs
+		);
+	}
+
+
+	/**
+	 * Gets all descendants of supplied line item that match the supplied line item type and possibly the object type
+	 * as well
+	 *
+	 * @param EE_Line_Item $parent_line_item - the line item to find descendants of
+	 * @param string       $OBJ_type         object type (like Event)
+	 * @param array        $OBJ_IDs          array of OBJ_IDs
+	 * @return EE_Line_Item[]
+	 * @throws EE_Error
+	 */
+	protected static function _get_descendants_by_object_type_and_object_ID(
+		EE_Line_Item $parent_line_item,
+		$OBJ_type,
+		$OBJ_IDs
+	) {
+		$objects = array();
+		foreach ($parent_line_item->children() as $child_line_item) {
+			if ($child_line_item instanceof EE_Line_Item) {
+				if (
+					$child_line_item->OBJ_type() === $OBJ_type
+					&& is_array($OBJ_IDs)
+					&& in_array($child_line_item->OBJ_ID(), $OBJ_IDs)
+				) {
+					$objects[] = $child_line_item;
+				} else {
+					// go-through-all-its children looking for more matches
+					$objects = array_merge(
+						$objects,
+						self::_get_descendants_by_object_type_and_object_ID(
+							$child_line_item,
+							$OBJ_type,
+							$OBJ_IDs
+						)
+					);
+				}
+			}
+		}
+		return $objects;
+	}
+
+
+	/**
+	 * Uses a breadth-first-search in order to find the nearest descendant of
+	 * the specified type and returns it, else NULL
+	 *
+	 * @uses  EEH_Line_Item::_get_nearest_descendant()
+	 * @param EE_Line_Item $parent_line_item - the line item to find descendants of
+	 * @param string       $type             like one of the EEM_Line_Item::type_*
+	 * @return EE_Line_Item
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 */
+	public static function get_nearest_descendant_of_type(EE_Line_Item $parent_line_item, $type)
+	{
+		return self::_get_nearest_descendant($parent_line_item, 'LIN_type', $type);
+	}
+
+
+	/**
+	 * Uses a breadth-first-search in order to find the nearest descendant
+	 * having the specified LIN_code and returns it, else NULL
+	 *
+	 * @uses  EEH_Line_Item::_get_nearest_descendant()
+	 * @param EE_Line_Item $parent_line_item - the line item to find descendants of
+	 * @param string       $code             any value used for LIN_code
+	 * @return EE_Line_Item
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 */
+	public static function get_nearest_descendant_having_code(EE_Line_Item $parent_line_item, $code)
+	{
+		return self::_get_nearest_descendant($parent_line_item, 'LIN_code', $code);
+	}
+
+
+	/**
+	 * Uses a breadth-first-search in order to find the nearest descendant
+	 * having the specified LIN_code and returns it, else NULL
+	 *
+	 * @param EE_Line_Item $parent_line_item - the line item to find descendants of
+	 * @param string       $search_field     name of EE_Line_Item property
+	 * @param string       $value            any value stored in $search_field
+	 * @return EE_Line_Item
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 */
+	protected static function _get_nearest_descendant(EE_Line_Item $parent_line_item, $search_field, $value)
+	{
+		foreach ($parent_line_item->children() as $child) {
+			if ($child->get($search_field) == $value) {
+				return $child;
+			}
+		}
+		foreach ($parent_line_item->children() as $child) {
+			$descendant_found = self::_get_nearest_descendant(
+				$child,
+				$search_field,
+				$value
+			);
+			if ($descendant_found) {
+				return $descendant_found;
+			}
+		}
+		return null;
+	}
+
+
+	/**
+	 * if passed line item has a TXN ID, uses that to jump directly to the grand total line item for the transaction,
+	 * else recursively walks up the line item tree until a parent of type total is found,
+	 *
+	 * @param EE_Line_Item $line_item
+	 * @return EE_Line_Item
+	 * @throws EE_Error
+	 */
+	public static function find_transaction_grand_total_for_line_item(EE_Line_Item $line_item)
+	{
+		if ($line_item->TXN_ID()) {
+			$total_line_item = $line_item->transaction()->total_line_item(false);
+			if ($total_line_item instanceof EE_Line_Item) {
+				return $total_line_item;
+			}
+		} else {
+			$line_item_parent = $line_item->parent();
+			if ($line_item_parent instanceof EE_Line_Item) {
+				if ($line_item_parent->is_total()) {
+					return $line_item_parent;
+				}
+				return EEH_Line_Item::find_transaction_grand_total_for_line_item($line_item_parent);
+			}
+		}
+		throw new EE_Error(
+			sprintf(
+				esc_html__(
+					'A valid grand total for line item %1$d was not found.',
+					'event_espresso'
+				),
+				$line_item->ID()
+			)
+		);
+	}
+
+
+	/**
+	 * Prints out a representation of the line item tree
+	 *
+	 * @param EE_Line_Item $line_item
+	 * @param int          $indentation
+	 * @return void
+	 * @throws EE_Error
+	 */
+	public static function visualize(EE_Line_Item $line_item, $indentation = 0)
+	{
+		echo defined('EE_TESTS_DIR') ? "\n" : '<br />';
+		if (! $indentation) {
+			echo defined('EE_TESTS_DIR') ? "\n" : '<br />';
+		}
+		for ($i = 0; $i < $indentation; $i++) {
+			echo '. ';
+		}
+		$breakdown = '';
+		if ($line_item->is_line_item()) {
+			if ($line_item->is_percent()) {
+				$breakdown = "{$line_item->percent()}%";
+			} else {
+				$breakdown = '$' . "{$line_item->unit_price()} x {$line_item->quantity()}";
+			}
+		}
+		echo wp_kses($line_item->name(), AllowedTags::getAllowedTags());
+		echo " [ ID:{$line_item->ID()} | qty:{$line_item->quantity()} ] {$line_item->type()} : ";
+		echo '$' . (string) $line_item->total();
+		if ($breakdown) {
+			echo " ( {$breakdown} )";
+		}
+		if ($line_item->is_taxable()) {
+			echo '  * taxable';
+		}
+		if ($line_item->children()) {
+			foreach ($line_item->children() as $child) {
+				self::visualize($child, $indentation + 1);
+			}
+		}
+	}
+
+
+	/**
+	 * Calculates the registration's final price, taking into account that they
+	 * need to not only help pay for their OWN ticket, but also any transaction-wide surcharges and taxes,
+	 * and receive a portion of any transaction-wide discounts.
+	 * eg1, if I buy a $1 ticket and brent buys a $9 ticket, and we receive a $5 discount
+	 * then I'll get 1/10 of that $5 discount, which is $0.50, and brent will get
+	 * 9/10ths of that $5 discount, which is $4.50. So my final price should be $0.50
+	 * and brent's final price should be $5.50.
+	 * In order to do this, we basically need to traverse the line item tree calculating
+	 * the running totals (just as if we were recalculating the total), but when we identify
+	 * regular line items, we need to keep track of their share of the grand total.
+	 * Also, we need to keep track of the TAXABLE total for each ticket purchase, so
+	 * we can know how to apply taxes to it. (Note: "taxable total" does not equal the "pretax total"
+	 * when there are non-taxable items; otherwise they would be the same)
+	 *
+	 * @param EE_Line_Item $line_item
+	 * @param array        $billable_ticket_quantities  array of EE_Ticket IDs and their corresponding quantity that
+	 *                                                  can be included in price calculations at this moment
+	 * @return array        keys are line items for tickets IDs and values are their share of the running total,
+	 *                                                  plus the key 'total', and 'taxable' which also has keys of all
+	 *                                                  the ticket IDs.
+	 *                                                  Eg array(
+	 *                                                      12 => 4.3
+	 *                                                      23 => 8.0
+	 *                                                      'total' => 16.6,
+	 *                                                      'taxable' => array(
+	 *                                                          12 => 10,
+	 *                                                          23 => 4
+	 *                                                      ).
+	 *                                                  So to find which registrations have which final price, we need
+	 *                                                  to find which line item is theirs, which can be done with
+	 *                                                  `EEM_Line_Item::instance()->get_line_item_for_registration(
+	 *                                                  $registration );`
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 */
+	public static function calculate_reg_final_prices_per_line_item(
+		EE_Line_Item $line_item,
+		$billable_ticket_quantities = array()
+	) {
+		$running_totals = [
+			'total'   => 0,
+			'taxable' => ['total' => 0]
+		];
+		foreach ($line_item->children() as $child_line_item) {
+			switch ($child_line_item->type()) {
+				case EEM_Line_Item::type_sub_total:
+					$running_totals_from_subtotal = EEH_Line_Item::calculate_reg_final_prices_per_line_item(
+						$child_line_item,
+						$billable_ticket_quantities
+					);
+					// combine arrays but preserve numeric keys
+					$running_totals = array_replace_recursive($running_totals_from_subtotal, $running_totals);
+					$running_totals['total'] += $running_totals_from_subtotal['total'];
+					$running_totals['taxable']['total'] += $running_totals_from_subtotal['taxable']['total'];
+					break;
+
+				case EEM_Line_Item::type_tax_sub_total:
+					// find how much the taxes percentage is
+					if ($child_line_item->percent() !== 0) {
+						$tax_percent_decimal = $child_line_item->percent() / 100;
+					} else {
+						$tax_percent_decimal = EE_Taxes::get_total_taxes_percentage() / 100;
+					}
+					// and apply to all the taxable totals, and add to the pretax totals
+					foreach ($running_totals as $line_item_id => $this_running_total) {
+						// "total" and "taxable" array key is an exception
+						if ($line_item_id === 'taxable') {
+							continue;
+						}
+						$taxable_total = $running_totals['taxable'][ $line_item_id ];
+						$running_totals[ $line_item_id ] += ($taxable_total * $tax_percent_decimal);
+					}
+					break;
+
+				case EEM_Line_Item::type_line_item:
+					// ticket line items or ????
+					if ($child_line_item->OBJ_type() === EEM_Line_Item::OBJ_TYPE_TICKET) {
+						// kk it's a ticket
+						if (isset($running_totals[ $child_line_item->ID() ])) {
+							// huh? that shouldn't happen.
+							$running_totals['total'] += $child_line_item->total();
+						} else {
+							// its not in our running totals yet. great.
+							if ($child_line_item->is_taxable()) {
+								$taxable_amount = $child_line_item->unit_price();
+							} else {
+								$taxable_amount = 0;
+							}
+							// are we only calculating totals for some tickets?
+							if (isset($billable_ticket_quantities[ $child_line_item->OBJ_ID() ])) {
+								$quantity = $billable_ticket_quantities[ $child_line_item->OBJ_ID() ];
+								$running_totals[ $child_line_item->ID() ] = $quantity
+									? $child_line_item->unit_price()
+									: 0;
+								$running_totals['taxable'][ $child_line_item->ID() ] = $quantity
+									? $taxable_amount
+									: 0;
+							} else {
+								$quantity = $child_line_item->quantity();
+								$running_totals[ $child_line_item->ID() ] = $child_line_item->unit_price();
+								$running_totals['taxable'][ $child_line_item->ID() ] = $taxable_amount;
+							}
+							$running_totals['taxable']['total'] += $taxable_amount * $quantity;
+							$running_totals['total'] += $child_line_item->unit_price() * $quantity;
+						}
+					} else {
+						// it's some other type of item added to the cart
+						// it should affect the running totals
+						// basically we want to convert it into a PERCENT modifier. Because
+						// more clearly affect all registration's final price equally
+						$line_items_percent_of_running_total = $running_totals['total'] > 0
+							? ($child_line_item->total() / $running_totals['total']) + 1
+							: 1;
+						foreach ($running_totals as $line_item_id => $this_running_total) {
+							// the "taxable" array key is an exception
+							if ($line_item_id === 'taxable') {
+								continue;
+							}
+							// update the running totals
+							// yes this actually even works for the running grand total!
+							$running_totals[ $line_item_id ] =
+								$line_items_percent_of_running_total * $this_running_total;
+
+							if ($child_line_item->is_taxable()) {
+								$running_totals['taxable'][ $line_item_id ] =
+									$line_items_percent_of_running_total * $running_totals['taxable'][ $line_item_id ];
+							}
+						}
+					}
+					break;
+			}
+		}
+		return $running_totals;
+	}
+
+
+	/**
+	 * @param EE_Line_Item $total_line_item
+	 * @param EE_Line_Item $ticket_line_item
+	 * @return float | null
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws OutOfRangeException
+	 * @throws ReflectionException
+	 */
+	public static function calculate_final_price_for_ticket_line_item(
+		EE_Line_Item $total_line_item,
+		EE_Line_Item $ticket_line_item
+	) {
+		static $final_prices_per_ticket_line_item = array();
+		if (empty($final_prices_per_ticket_line_item) || empty($final_prices_per_ticket_line_item[ $total_line_item->ID() ])) {
+			$final_prices_per_ticket_line_item[ $total_line_item->ID() ] = EEH_Line_Item::calculate_reg_final_prices_per_line_item(
+				$total_line_item
+			);
+		}
+		// ok now find this new registration's final price
+		if (isset($final_prices_per_ticket_line_item[ $total_line_item->ID() ][ $ticket_line_item->ID() ])) {
+			return $final_prices_per_ticket_line_item[ $total_line_item->ID() ][ $ticket_line_item->ID() ];
+		}
+		$message = sprintf(
+			esc_html__(
+				'The final price for the ticket line item (ID:%1$d) could not be calculated.',
+				'event_espresso'
+			),
+			$ticket_line_item->ID()
+		);
+		if (WP_DEBUG) {
+			$message .= '<br>' . print_r($final_prices_per_ticket_line_item, true);
+			throw new OutOfRangeException($message);
+		}
+		EE_Log::instance()->log(__CLASS__, __FUNCTION__, $message);
+		return null;
+	}
+
+
+	/**
+	 * Creates a duplicate of the line item tree, except only includes billable items
+	 * and the portion of line items attributed to billable things
+	 *
+	 * @param EE_Line_Item      $line_item
+	 * @param EE_Registration[] $registrations
+	 * @return EE_Line_Item
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 */
+	public static function billable_line_item_tree(EE_Line_Item $line_item, $registrations)
+	{
+		$copy_li = EEH_Line_Item::billable_line_item($line_item, $registrations);
+		foreach ($line_item->children() as $child_li) {
+			$copy_li->add_child_line_item(
+				EEH_Line_Item::billable_line_item_tree($child_li, $registrations)
+			);
+		}
+		// if this is the grand total line item, make sure the totals all add up
+		// (we could have duplicated this logic AS we copied the line items, but
+		// it seems DRYer this way)
+		if ($copy_li->type() === EEM_Line_Item::type_total) {
+			$copy_li->recalculate_total_including_taxes();
+		}
+		return $copy_li;
+	}
+
+
+	/**
+	 * Creates a new, unsaved line item from $line_item that factors in the
+	 * number of billable registrations on $registrations.
+	 *
+	 * @param EE_Line_Item      $line_item
+	 * @param EE_Registration[] $registrations
+	 * @return EE_Line_Item
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 */
+	public static function billable_line_item(EE_Line_Item $line_item, $registrations)
+	{
+		$new_li_fields = $line_item->model_field_array();
+		if (
+			$line_item->type() === EEM_Line_Item::type_line_item &&
+			$line_item->OBJ_type() === EEM_Line_Item::OBJ_TYPE_TICKET
+		) {
+			$count = 0;
+			foreach ($registrations as $registration) {
+				if (
+					$line_item->OBJ_ID() === $registration->ticket_ID() &&
+					in_array(
+						$registration->status_ID(),
+						EEM_Registration::reg_statuses_that_allow_payment(),
+						true
+					)
+				) {
+					$count++;
+				}
+			}
+			$new_li_fields['LIN_quantity'] = $count;
+		}
+		// don't set the total. We'll leave that up to the code that calculates it
+		unset($new_li_fields['LIN_ID'], $new_li_fields['LIN_parent'], $new_li_fields['LIN_total']);
+		return EE_Line_Item::new_instance($new_li_fields);
+	}
+
+
+	/**
+	 * Returns a modified line item tree where all the subtotals which have a total of 0
+	 * are removed, and line items with a quantity of 0
+	 *
+	 * @param EE_Line_Item $line_item |null
+	 * @return EE_Line_Item|null
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 */
+	public static function non_empty_line_items(EE_Line_Item $line_item)
+	{
+		$copied_li = EEH_Line_Item::non_empty_line_item($line_item);
+		if ($copied_li === null) {
+			return null;
+		}
+		// if this is an event subtotal, we want to only include it if it
+		// has a non-zero total and at least one ticket line item child
+		$ticket_children = 0;
+		foreach ($line_item->children() as $child_li) {
+			$child_li_copy = EEH_Line_Item::non_empty_line_items($child_li);
+			if ($child_li_copy !== null) {
+				$copied_li->add_child_line_item($child_li_copy);
+				if (
+					$child_li_copy->type() === EEM_Line_Item::type_line_item &&
+					$child_li_copy->OBJ_type() === EEM_Line_Item::OBJ_TYPE_TICKET
+				) {
+					$ticket_children++;
+				}
+			}
+		}
+		// if this is an event subtotal with NO ticket children
+		// we basically want to ignore it
+		if (
+			$ticket_children === 0
+			&& $line_item->type() === EEM_Line_Item::type_sub_total
+			&& $line_item->OBJ_type() === EEM_Line_Item::OBJ_TYPE_EVENT
+			&& $line_item->total() === 0
+		) {
+			return null;
+		}
+		return $copied_li;
+	}
+
+
+	/**
+	 * Creates a new, unsaved line item, but if it's a ticket line item
+	 * with a total of 0, or a subtotal of 0, returns null instead
+	 *
+	 * @param EE_Line_Item $line_item
+	 * @return EE_Line_Item
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 */
+	public static function non_empty_line_item(EE_Line_Item $line_item)
+	{
+		if (
+			$line_item->type() === EEM_Line_Item::type_line_item
+			&& $line_item->OBJ_type() === EEM_Line_Item::OBJ_TYPE_TICKET
+			&& $line_item->quantity() === 0
+		) {
+			return null;
+		}
+		$new_li_fields = $line_item->model_field_array();
+		// don't set the total. We'll leave that up to the code that calculates it
+		unset($new_li_fields['LIN_ID'], $new_li_fields['LIN_parent']);
+		return EE_Line_Item::new_instance($new_li_fields);
+	}
+
+
+	/**
+	 * Cycles through all of the ticket line items for the supplied total line item
+	 * and ensures that the line item's "is_taxable" field matches that of its corresponding ticket
+	 *
+	 * @param EE_Line_Item $total_line_item
+	 * @since 4.9.79.p
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 */
+	public static function resetIsTaxableForTickets(EE_Line_Item $total_line_item)
+	{
+		$ticket_line_items = self::get_ticket_line_items($total_line_item);
+		foreach ($ticket_line_items as $ticket_line_item) {
+			if (
+				$ticket_line_item instanceof EE_Line_Item
+				&& $ticket_line_item->OBJ_type() === EEM_Line_Item::OBJ_TYPE_TICKET
+			) {
+				$ticket = $ticket_line_item->ticket();
+				if ($ticket instanceof EE_Ticket && $ticket->taxable() !== $ticket_line_item->is_taxable()) {
+					$ticket_line_item->set_is_taxable($ticket->taxable());
+					$ticket_line_item->save();
+				}
+			}
+		}
+	}
+
+
+
+	/**************************************** @DEPRECATED METHODS *************************************** */
+	/**
+	 * @deprecated
+	 * @param EE_Line_Item $total_line_item
+	 * @return EE_Line_Item
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 */
+	public static function get_items_subtotal(EE_Line_Item $total_line_item)
+	{
+		EE_Error::doing_it_wrong(
+			'EEH_Line_Item::get_items_subtotal()',
+			sprintf(
+				esc_html__('Method replaced with %1$s', 'event_espresso'),
+				'EEH_Line_Item::get_pre_tax_subtotal()'
+			),
+			'4.6.0'
+		);
+		return self::get_pre_tax_subtotal($total_line_item);
+	}
+
+
+	/**
+	 * @deprecated
+	 * @param EE_Transaction $transaction
+	 * @return EE_Line_Item
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 */
+	public static function create_default_total_line_item($transaction = null)
+	{
+		EE_Error::doing_it_wrong(
+			'EEH_Line_Item::create_default_total_line_item()',
+			sprintf(
+				esc_html__('Method replaced with %1$s', 'event_espresso'),
+				'EEH_Line_Item::create_total_line_item()'
+			),
+			'4.6.0'
+		);
+		return self::create_total_line_item($transaction);
+	}
+
+
+	/**
+	 * @deprecated
+	 * @param EE_Line_Item   $total_line_item
+	 * @param EE_Transaction $transaction
+	 * @return EE_Line_Item
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 */
+	public static function create_default_tickets_subtotal(EE_Line_Item $total_line_item, $transaction = null)
+	{
+		EE_Error::doing_it_wrong(
+			'EEH_Line_Item::create_default_tickets_subtotal()',
+			sprintf(
+				esc_html__('Method replaced with %1$s', 'event_espresso'),
+				'EEH_Line_Item::create_pre_tax_subtotal()'
+			),
+			'4.6.0'
+		);
+		return self::create_pre_tax_subtotal($total_line_item, $transaction);
+	}
+
+
+	/**
+	 * @deprecated
+	 * @param EE_Line_Item   $total_line_item
+	 * @param EE_Transaction $transaction
+	 * @return EE_Line_Item
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 */
+	public static function create_default_taxes_subtotal(EE_Line_Item $total_line_item, $transaction = null)
+	{
+		EE_Error::doing_it_wrong(
+			'EEH_Line_Item::create_default_taxes_subtotal()',
+			sprintf(
+				esc_html__('Method replaced with %1$s', 'event_espresso'),
+				'EEH_Line_Item::create_taxes_subtotal()'
+			),
+			'4.6.0'
+		);
+		return self::create_taxes_subtotal($total_line_item, $transaction);
+	}
+
+
+	/**
+	 * @deprecated
+	 * @param EE_Line_Item   $total_line_item
+	 * @param EE_Transaction $transaction
+	 * @return EE_Line_Item
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 */
+	public static function create_default_event_subtotal(EE_Line_Item $total_line_item, $transaction = null)
+	{
+		EE_Error::doing_it_wrong(
+			'EEH_Line_Item::create_default_event_subtotal()',
+			sprintf(
+				esc_html__('Method replaced with %1$s', 'event_espresso'),
+				'EEH_Line_Item::create_event_subtotal()'
+			),
+			'4.6.0'
+		);
+		return self::create_event_subtotal($total_line_item, $transaction);
+	}
 }

Spacing +38 added lines, -38 removed lines

@@ -139,7 +139,7 @@ 
      */
     public static function add_ticket_purchase(EE_Line_Item $total_line_item, EE_Ticket $ticket, $qty = 1)
     {
-        if (! $total_line_item instanceof EE_Line_Item || ! $total_line_item->is_total()) {
+        if ( ! $total_line_item instanceof EE_Line_Item || ! $total_line_item->is_total()) {
             throw new EE_Error(
                 sprintf(
                     esc_html__(
@@ -154,7 +154,7 @@ 
         // either increment the qty for an existing ticket
         $line_item = self::increment_ticket_qty_if_already_in_cart($total_line_item, $ticket, $qty);
         // or add a new one
-        if (! $line_item instanceof EE_Line_Item) {
+        if ( ! $line_item instanceof EE_Line_Item) {
             $line_item = self::create_ticket_line_item($total_line_item, $ticket, $qty);
         }
         $total_line_item->recalculate_total_including_taxes();
@@ -216,7 +216,7 @@ 
      */
     public static function increment_quantity(EE_Line_Item $line_item, $qty = 1)
     {
-        if (! $line_item->is_percent()) {
+        if ( ! $line_item->is_percent()) {
             $qty += $line_item->quantity();
             $line_item->set_quantity($qty);
             $line_item->set_total($line_item->unit_price() * $qty);
@@ -245,7 +245,7 @@ 
      */
     public static function decrement_quantity(EE_Line_Item $line_item, $qty = 1)
     {
-        if (! $line_item->is_percent()) {
+        if ( ! $line_item->is_percent()) {
             $qty = $line_item->quantity() - $qty;
             $qty = max($qty, 0);
             $line_item->set_quantity($qty);
@@ -274,7 +274,7 @@ 
      */
     public static function update_quantity(EE_Line_Item $line_item, $new_quantity)
     {
-        if (! $line_item->is_percent()) {
+        if ( ! $line_item->is_percent()) {
             $line_item->set_quantity($new_quantity);
             $line_item->set_total($line_item->unit_price() * $new_quantity);
             $line_item->save();
@@ -314,7 +314,7 @@ 
         // add $ticket to cart
         $line_item = EE_Line_Item::new_instance(array(
             'LIN_name'       => $ticket->name(),
-            'LIN_desc'       => $ticket->description() !== '' ? $ticket->description() . ' ' . $event : $event,
+            'LIN_desc'       => $ticket->description() !== '' ? $ticket->description().' '.$event : $event,
             'LIN_unit_price' => $ticket->price(),
             'LIN_quantity'   => $qty,
             'LIN_is_taxable' => $ticket->taxable(),
@@ -465,7 +465,7 @@ 
                         'event_espresso'
                     ),
                     $ticket_line_item->name(),
-                    current_time(get_option('date_format') . ' ' . get_option('time_format'))
+                    current_time(get_option('date_format').' '.get_option('time_format'))
                 ),
                 'LIN_unit_price' => 0, // $ticket_line_item->unit_price()
                 'LIN_quantity'   => $qty,
@@ -528,7 +528,7 @@ 
         );
         $cancellation_line_item = reset($cancellation_line_item);
         // verify that this ticket was indeed previously cancelled
-        if (! $cancellation_line_item instanceof EE_Line_Item) {
+        if ( ! $cancellation_line_item instanceof EE_Line_Item) {
             return false;
         }
         if ($cancellation_line_item->quantity() > $qty) {
@@ -734,7 +734,7 @@ 
             'LIN_code'  => 'taxes',
             'LIN_name'  => esc_html__('Taxes', 'event_espresso'),
             'LIN_type'  => EEM_Line_Item::type_tax_sub_total,
-            'LIN_order' => 1000,// this should always come last
+            'LIN_order' => 1000, // this should always come last
         ));
         $tax_line_item = apply_filters(
             'FHEE__EEH_Line_Item__create_taxes_subtotal__tax_line_item',
@@ -790,7 +790,7 @@ 
      */
     public static function get_event_code($event)
     {
-        return 'event-' . ($event instanceof EE_Event ? $event->ID() : '0');
+        return 'event-'.($event instanceof EE_Event ? $event->ID() : '0');
     }
 
 
@@ -839,7 +839,7 @@ 
     public static function get_event_line_item_for_ticket(EE_Line_Item $grand_total, EE_Ticket $ticket)
     {
         $first_datetime = $ticket->first_datetime();
-        if (! $first_datetime instanceof EE_Datetime) {
+        if ( ! $first_datetime instanceof EE_Datetime) {
             throw new EE_Error(
                 sprintf(
                     esc_html__('The supplied ticket (ID %d) has no datetimes', 'event_espresso'),
@@ -848,7 +848,7 @@ 
             );
         }
         $event = $first_datetime->event();
-        if (! $event instanceof EE_Event) {
+        if ( ! $event instanceof EE_Event) {
             throw new EE_Error(
                 sprintf(
                     esc_html__(
@@ -860,7 +860,7 @@ 
             );
         }
         $events_sub_total = EEH_Line_Item::get_event_line_item($grand_total, $event);
-        if (! $events_sub_total instanceof EE_Line_Item) {
+        if ( ! $events_sub_total instanceof EE_Line_Item) {
             throw new EE_Error(
                 sprintf(
                     esc_html__(
@@ -896,7 +896,7 @@ 
         $found = false;
         foreach (EEH_Line_Item::get_event_subtotals($grand_total) as $event_line_item) {
             // default event subtotal, we should only ever find this the first time this method is called
-            if (! $event_line_item->OBJ_ID()) {
+            if ( ! $event_line_item->OBJ_ID()) {
                 // let's use this! but first... set the event details
                 EEH_Line_Item::set_event_subtotal_details($event_line_item, $event);
                 $found = true;
@@ -908,7 +908,7 @@ 
                 break;
             }
         }
-        if (! $found) {
+        if ( ! $found) {
             // there is no event sub-total yet, so add it
             $pre_tax_subtotal = EEH_Line_Item::get_pre_tax_subtotal($grand_total);
             // create a new "event" subtotal below that
@@ -1025,7 +1025,7 @@ 
     public static function ensure_taxes_applied($total_line_item)
     {
         $taxes_subtotal = self::get_taxes_subtotal($total_line_item);
-        if (! $taxes_subtotal->children()) {
+        if ( ! $taxes_subtotal->children()) {
             self::apply_taxes($total_line_item);
         }
         return $taxes_subtotal->total();
@@ -1092,7 +1092,7 @@ 
         do_action('AHEE_log', __FILE__, __FUNCTION__, '');
 
         // check if only a single line_item_id was passed
-        if (! empty($line_item_codes) && ! is_array($line_item_codes)) {
+        if ( ! empty($line_item_codes) && ! is_array($line_item_codes)) {
             // place single line_item_id in an array to appear as multiple line_item_ids
             $line_item_codes = array($line_item_codes);
         }
@@ -1199,7 +1199,7 @@ 
         if ($code_substring_for_whitelist !== null) {
             $whitelisted = strpos($line_item->code(), $code_substring_for_whitelist) !== false;
         }
-        if (! $whitelisted && $line_item->is_line_item()) {
+        if ( ! $whitelisted && $line_item->is_line_item()) {
             $line_item->set_is_taxable($taxable);
         }
         foreach ($line_item->children() as $child_line_item) {
@@ -1563,7 +1563,7 @@ 
     public static function visualize(EE_Line_Item $line_item, $indentation = 0)
     {
         echo defined('EE_TESTS_DIR') ? "\n" : '<br />';
-        if (! $indentation) {
+        if ( ! $indentation) {
             echo defined('EE_TESTS_DIR') ? "\n" : '<br />';
         }
         for ($i = 0; $i < $indentation; $i++) {
@@ -1574,12 +1574,12 @@ 
             if ($line_item->is_percent()) {
                 $breakdown = "{$line_item->percent()}%";
             } else {
-                $breakdown = '$' . "{$line_item->unit_price()} x {$line_item->quantity()}";
+                $breakdown = '$'."{$line_item->unit_price()} x {$line_item->quantity()}";
             }
         }
         echo wp_kses($line_item->name(), AllowedTags::getAllowedTags());
         echo " [ ID:{$line_item->ID()} | qty:{$line_item->quantity()} ] {$line_item->type()} : ";
-        echo '$' . (string) $line_item->total();
+        echo '$'.(string) $line_item->total();
         if ($breakdown) {
             echo " ( {$breakdown} )";
         }
@@ -1667,8 +1667,8 @@ 
                         if ($line_item_id === 'taxable') {
                             continue;
                         }
-                        $taxable_total = $running_totals['taxable'][ $line_item_id ];
-                        $running_totals[ $line_item_id ] += ($taxable_total * $tax_percent_decimal);
+                        $taxable_total = $running_totals['taxable'][$line_item_id];
+                        $running_totals[$line_item_id] += ($taxable_total * $tax_percent_decimal);
                     }
                     break;
 
@@ -1676,7 +1676,7 @@ 
                     // ticket line items or ????
                     if ($child_line_item->OBJ_type() === EEM_Line_Item::OBJ_TYPE_TICKET) {
                         // kk it's a ticket
-                        if (isset($running_totals[ $child_line_item->ID() ])) {
+                        if (isset($running_totals[$child_line_item->ID()])) {
                             // huh? that shouldn't happen.
                             $running_totals['total'] += $child_line_item->total();
                         } else {
@@ -1687,18 +1687,18 @@ 
                                 $taxable_amount = 0;
                             }
                             // are we only calculating totals for some tickets?
-                            if (isset($billable_ticket_quantities[ $child_line_item->OBJ_ID() ])) {
-                                $quantity = $billable_ticket_quantities[ $child_line_item->OBJ_ID() ];
-                                $running_totals[ $child_line_item->ID() ] = $quantity
+                            if (isset($billable_ticket_quantities[$child_line_item->OBJ_ID()])) {
+                                $quantity = $billable_ticket_quantities[$child_line_item->OBJ_ID()];
+                                $running_totals[$child_line_item->ID()] = $quantity
                                     ? $child_line_item->unit_price()
                                     : 0;
-                                $running_totals['taxable'][ $child_line_item->ID() ] = $quantity
+                                $running_totals['taxable'][$child_line_item->ID()] = $quantity
                                     ? $taxable_amount
                                     : 0;
                             } else {
                                 $quantity = $child_line_item->quantity();
-                                $running_totals[ $child_line_item->ID() ] = $child_line_item->unit_price();
-                                $running_totals['taxable'][ $child_line_item->ID() ] = $taxable_amount;
+                                $running_totals[$child_line_item->ID()] = $child_line_item->unit_price();
+                                $running_totals['taxable'][$child_line_item->ID()] = $taxable_amount;
                             }
                             $running_totals['taxable']['total'] += $taxable_amount * $quantity;
                             $running_totals['total'] += $child_line_item->unit_price() * $quantity;
@@ -1718,12 +1718,12 @@ 
                             }
                             // update the running totals
                             // yes this actually even works for the running grand total!
-                            $running_totals[ $line_item_id ] =
+                            $running_totals[$line_item_id] =
                                 $line_items_percent_of_running_total * $this_running_total;
 
                             if ($child_line_item->is_taxable()) {
-                                $running_totals['taxable'][ $line_item_id ] =
-                                    $line_items_percent_of_running_total * $running_totals['taxable'][ $line_item_id ];
+                                $running_totals['taxable'][$line_item_id] =
+                                    $line_items_percent_of_running_total * $running_totals['taxable'][$line_item_id];
                             }
                         }
                     }
@@ -1750,14 +1750,14 @@ 
         EE_Line_Item $ticket_line_item
     ) {
         static $final_prices_per_ticket_line_item = array();
-        if (empty($final_prices_per_ticket_line_item) || empty($final_prices_per_ticket_line_item[ $total_line_item->ID() ])) {
-            $final_prices_per_ticket_line_item[ $total_line_item->ID() ] = EEH_Line_Item::calculate_reg_final_prices_per_line_item(
+        if (empty($final_prices_per_ticket_line_item) || empty($final_prices_per_ticket_line_item[$total_line_item->ID()])) {
+            $final_prices_per_ticket_line_item[$total_line_item->ID()] = EEH_Line_Item::calculate_reg_final_prices_per_line_item(
                 $total_line_item
             );
         }
         // ok now find this new registration's final price
-        if (isset($final_prices_per_ticket_line_item[ $total_line_item->ID() ][ $ticket_line_item->ID() ])) {
-            return $final_prices_per_ticket_line_item[ $total_line_item->ID() ][ $ticket_line_item->ID() ];
+        if (isset($final_prices_per_ticket_line_item[$total_line_item->ID()][$ticket_line_item->ID()])) {
+            return $final_prices_per_ticket_line_item[$total_line_item->ID()][$ticket_line_item->ID()];
         }
         $message = sprintf(
             esc_html__(
@@ -1767,7 +1767,7 @@ 
             $ticket_line_item->ID()
         );
         if (WP_DEBUG) {
-            $message .= '<br>' . print_r($final_prices_per_ticket_line_item, true);
+            $message .= '<br>'.print_r($final_prices_per_ticket_line_item, true);
             throw new OutOfRangeException($message);
         }
         EE_Log::instance()->log(__CLASS__, __FUNCTION__, $message);

core/helpers/EEH_Debug_Tools.helper.php

Indentation +682 added lines, -682 removed lines

@@ -16,673 +16,673 @@ 
 class EEH_Debug_Tools
 {
 
-    /**
-     *    instance of the EEH_Autoloader object
-     *
-     * @var    $_instance
-     * @access    private
-     */
-    private static $_instance;
-
-    /**
-     * @var array
-     */
-    protected $_memory_usage_points = array();
-
-
-
-    /**
-     * @singleton method used to instantiate class object
-     * @access    public
-     * @return EEH_Debug_Tools
-     */
-    public static function instance()
-    {
-        // check if class object is instantiated, and instantiated properly
-        if (! self::$_instance instanceof EEH_Debug_Tools) {
-            self::$_instance = new self();
-        }
-        return self::$_instance;
-    }
-
-
-
-    /**
-     * private class constructor
-     */
-    private function __construct()
-    {
-        // load Kint PHP debugging library
-        if (
-            defined('EE_LOAD_KINT')
-            && ! class_exists('Kint')
-            && file_exists(EE_PLUGIN_DIR_PATH . 'tests/kint/Kint.class.php')
-        ) {
-            // despite EE4 having a check for an existing copy of the Kint debugging class,
-            // if another plugin was loaded AFTER EE4 and they did NOT perform a similar check,
-            // then hilarity would ensue as PHP throws a "Cannot redeclare class Kint" error
-            // so we've moved it to our test folder so that it is not included with production releases
-            // plz use https://wordpress.org/plugins/kint-debugger/  if testing production versions of EE
-            require_once(EE_PLUGIN_DIR_PATH . 'tests/kint/Kint.class.php');
-        }
-        $plugin = basename(EE_PLUGIN_DIR_PATH);
-        add_action("activate_{$plugin}", array('EEH_Debug_Tools', 'ee_plugin_activation_errors'));
-        add_action('activated_plugin', array('EEH_Debug_Tools', 'ee_plugin_activation_errors'));
-        add_action('shutdown', array('EEH_Debug_Tools', 'show_db_name'));
-    }
-
-
-
-    /**
-     *    show_db_name
-     *
-     * @return void
-     */
-    public static function show_db_name()
-    {
-        if (! defined('DOING_AJAX') && (defined('EE_ERROR_EMAILS') && EE_ERROR_EMAILS)) {
-            echo '<p style="font-size:10px;font-weight:normal;color:#E76700;margin: 1em 2em; text-align: right;">DB_NAME: '
-                 . DB_NAME
-                 . '</p>';
-        }
-        if (EE_DEBUG) {
-            Benchmark::displayResults();
-        }
-    }
-
-
-
-    /**
-     *    dump EE_Session object at bottom of page after everything else has happened
-     *
-     * @return void
-     */
-    public function espresso_session_footer_dump()
-    {
-        if (
-            (defined('WP_DEBUG') && WP_DEBUG)
-            && ! defined('DOING_AJAX')
-            && class_exists('Kint')
-            && function_exists('wp_get_current_user')
-            && current_user_can('update_core')
-            && class_exists('EE_Registry')
-        ) {
-            Kint::dump(EE_Registry::instance()->SSN->id());
-            Kint::dump(EE_Registry::instance()->SSN);
-            //          Kint::dump( EE_Registry::instance()->SSN->get_session_data('cart')->get_tickets() );
-            $this->espresso_list_hooked_functions();
-            Benchmark::displayResults();
-        }
-    }
-
-
-
-    /**
-     *    List All Hooked Functions
-     *    to list all functions for a specific hook, add ee_list_hooks={hook-name} to URL
-     *    http://wp.smashingmagazine.com/2009/08/18/10-useful-wordpress-hook-hacks/
-     *
-     * @param string $tag
-     * @return void
-     */
-    public function espresso_list_hooked_functions($tag = '')
-    {
-        global $wp_filter;
-        echo '<br/><br/><br/><h3>Hooked Functions</h3>';
-        if ($tag) {
-            $hook[ $tag ] = $wp_filter[ $tag ];
-            if (! is_array($hook[ $tag ])) {
-                trigger_error("Nothing found for '$tag' hook", E_USER_WARNING);
-                return;
-            }
-            echo '<h5>For Tag: ' . esc_html($tag) . '</h5>';
-        } else {
-            $hook = is_array($wp_filter) ? $wp_filter : array($wp_filter);
-            ksort($hook);
-        }
-        foreach ($hook as $tag_name => $priorities) {
-            echo "<br />&gt;&gt;&gt;&gt;&gt;\t<strong>esc_html($tag_name)</strong><br />";
-            ksort($priorities);
-            foreach ($priorities as $priority => $function) {
-                echo esc_html($priority);
-                foreach ($function as $name => $properties) {
-                    $name = esc_html($name);
-                    echo "\t$name<br />";
-                }
-            }
-        }
-    }
-
-
-
-    /**
-     *    registered_filter_callbacks
-     *
-     * @param string $hook_name
-     * @return array
-     */
-    public static function registered_filter_callbacks($hook_name = '')
-    {
-        $filters = array();
-        global $wp_filter;
-        if (isset($wp_filter[ $hook_name ])) {
-            $filters[ $hook_name ] = array();
-            foreach ($wp_filter[ $hook_name ] as $priority => $callbacks) {
-                $filters[ $hook_name ][ $priority ] = array();
-                foreach ($callbacks as $callback) {
-                    $filters[ $hook_name ][ $priority ][] = $callback['function'];
-                }
-            }
-        }
-        return $filters;
-    }
-
-
-
-    /**
-     *    captures plugin activation errors for debugging
-     *
-     * @return void
-     * @throws EE_Error
-     */
-    public static function ee_plugin_activation_errors()
-    {
-        if (WP_DEBUG) {
-            $activation_errors = ob_get_contents();
-            if (! empty($activation_errors)) {
-                $activation_errors = date('Y-m-d H:i:s') . "\n" . $activation_errors;
-            }
-            espresso_load_required('EEH_File', EE_HELPERS . 'EEH_File.helper.php');
-            if (class_exists('EEH_File')) {
-                try {
-                    EEH_File::ensure_file_exists_and_is_writable(
-                        EVENT_ESPRESSO_UPLOAD_DIR . 'logs/espresso_plugin_activation_errors.html'
-                    );
-                    EEH_File::write_to_file(
-                        EVENT_ESPRESSO_UPLOAD_DIR . 'logs/espresso_plugin_activation_errors.html',
-                        $activation_errors
-                    );
-                } catch (EE_Error $e) {
-                    EE_Error::add_error(
-                        sprintf(
-                            esc_html__(
-                                'The Event Espresso activation errors file could not be setup because: %s',
-                                'event_espresso'
-                            ),
-                            $e->getMessage()
-                        ),
-                        __FILE__,
-                        __FUNCTION__,
-                        __LINE__
-                    );
-                }
-            } else {
-                // old school attempt
-                file_put_contents(
-                    EVENT_ESPRESSO_UPLOAD_DIR . 'logs/espresso_plugin_activation_errors.html',
-                    $activation_errors
-                );
-            }
-            $activation_errors = get_option('ee_plugin_activation_errors', '') . $activation_errors;
-            update_option('ee_plugin_activation_errors', $activation_errors);
-        }
-    }
-
-
-
-    /**
-     * This basically mimics the WordPress _doing_it_wrong() function except adds our own messaging etc.
-     * Very useful for providing helpful messages to developers when the method of doing something has been deprecated,
-     * or we want to make sure they use something the right way.
-     *
-     * @access public
-     * @param string $function      The function that was called
-     * @param string $message       A message explaining what has been done incorrectly
-     * @param string $version       The version of Event Espresso where the error was added
-     * @param string $applies_when  a version string for when you want the doing_it_wrong notice to begin appearing
-     *                              for a deprecated function. This allows deprecation to occur during one version,
-     *                              but not have any notices appear until a later version. This allows developers
-     *                              extra time to update their code before notices appear.
-     * @param int    $error_type
-     * @uses   trigger_error()
-     */
-    public function doing_it_wrong(
-        $function,
-        $message,
-        $version,
-        $applies_when = '',
-        $error_type = null
-    ) {
-        $applies_when = ! empty($applies_when) ? $applies_when : espresso_version();
-        $error_type = $error_type !== null ? $error_type : E_USER_NOTICE;
-        // because we swapped the parameter order around for the last two params,
-        // let's verify that some third party isn't still passing an error type value for the third param
-        if (is_int($applies_when)) {
-            $error_type = $applies_when;
-            $applies_when = espresso_version();
-        }
-        // if not displaying notices yet, then just leave
-        if (version_compare(espresso_version(), $applies_when, '<')) {
-            return;
-        }
-        do_action('AHEE__EEH_Debug_Tools__doing_it_wrong_run', $function, $message, $version);
-        $version = $version === null
-            ? ''
-            : sprintf(
-                esc_html__('(This message was added in version %s of Event Espresso)', 'event_espresso'),
-                $version
-            );
-        $error_message = sprintf(
-            esc_html__('%1$s was called %2$sincorrectly%3$s. %4$s %5$s', 'event_espresso'),
-            $function,
-            '<strong>',
-            '</strong>',
-            $message,
-            $version
-        );
-        // don't trigger error if doing ajax,
-        // instead we'll add a transient EE_Error notice that in theory should show on the next request.
-        if (defined('DOING_AJAX') && DOING_AJAX) {
-            $error_message .= ' ' . esc_html__(
-                'This is a doing_it_wrong message that was triggered during an ajax request.  The request params on this request were: ',
-                'event_espresso'
-            );
-            $request = LoaderFactory::getLoader()->getShared(RequestInterface::class);
-            $error_message .= '<ul><li>';
-            $error_message .= implode('</li><li>', $request->requestParams());
-            $error_message .= '</ul>';
-            EE_Error::add_error($error_message, 'debug::doing_it_wrong', $function, '42');
-            // now we set this on the transient so it shows up on the next request.
-            EE_Error::get_notices(false, true);
-        } else {
-            trigger_error($error_message, $error_type);
-        }
-    }
-
-
-
-
-    /**
-     * Logger helpers
-     */
-    /**
-     * debug
-     *
-     * @param string $class
-     * @param string $func
-     * @param string $line
-     * @param array  $info
-     * @param bool   $display_request
-     * @param string $debug_index
-     * @param string $debug_key
-     */
-    public static function log(
-        $class = '',
-        $func = '',
-        $line = '',
-        $info = array(),
-        $display_request = false,
-        $debug_index = '',
-        $debug_key = 'EE_DEBUG_SPCO'
-    ) {
-        if (WP_DEBUG) {
-            $debug_key = $debug_key . '_' . EE_Session::instance()->id();
-            $debug_data = get_option($debug_key, array());
-            $default_data = array(
-                $class => $func . '() : ' . $line,
-            );
-            // don't serialize objects
-            $info = self::strip_objects($info);
-            $index = ! empty($debug_index) ? $debug_index : 0;
-            if (! isset($debug_data[ $index ])) {
-                $debug_data[ $index ] = array();
-            }
-            $debug_data[ $index ][ microtime() ] = array_merge($default_data, $info);
-            update_option($debug_key, $debug_data);
-        }
-    }
-
-
-
-    /**
-     * strip_objects
-     *
-     * @param array $info
-     * @return array
-     */
-    public static function strip_objects($info = array())
-    {
-        foreach ($info as $key => $value) {
-            if (is_array($value)) {
-                $info[ $key ] = self::strip_objects($value);
-            } elseif (is_object($value)) {
-                $object_class = get_class($value);
-                $info[ $object_class ] = array();
-                $info[ $object_class ]['ID'] = method_exists($value, 'ID') ? $value->ID() : spl_object_hash($value);
-                if (method_exists($value, 'ID')) {
-                    $info[ $object_class ]['ID'] = $value->ID();
-                }
-                if (method_exists($value, 'status')) {
-                    $info[ $object_class ]['status'] = $value->status();
-                } elseif (method_exists($value, 'status_ID')) {
-                    $info[ $object_class ]['status'] = $value->status_ID();
-                }
-                unset($info[ $key ]);
-            }
-        }
-        return (array) $info;
-    }
-
-
-
-    /**
-     * @param mixed      $var
-     * @param string     $var_name
-     * @param string     $file
-     * @param int|string $line
-     * @param int|string $heading_tag
-     * @param bool       $die
-     * @param string     $margin
-     */
-    public static function printv(
-        $var,
-        $var_name = '',
-        $file = '',
-        $line = '',
-        $heading_tag = 5,
-        $die = false,
-        $margin = ''
-    ) {
-        $var_name = ! $var_name ? 'string' : $var_name;
-        $var_name = ucwords(str_replace('$', '', $var_name));
-        $is_method = method_exists($var_name, $var);
-        $var_name = ucwords(str_replace('_', ' ', $var_name));
-        $heading_tag = EEH_Debug_Tools::headingTag($heading_tag);
-        $result = EEH_Debug_Tools::headingSpacer($heading_tag);
-        $result .= EEH_Debug_Tools::heading($var_name, $heading_tag, $margin, $line);
-        $result .= $is_method
-            ? EEH_Debug_Tools::grey_span('::') . EEH_Debug_Tools::orange_span($var . '()')
-            : EEH_Debug_Tools::grey_span(' : ') . EEH_Debug_Tools::orange_span($var);
-        $result .= EEH_Debug_Tools::file_and_line($file, $line, $heading_tag);
-        $result .= EEH_Debug_Tools::headingX($heading_tag);
-        if ($die) {
-            die($result);
-        }
-        echo wp_kses($result, AllowedTags::getWithFormTags());
-    }
-
-
-    protected static function headingTag($heading_tag)
-    {
-        $heading_tag = absint($heading_tag);
-        return $heading_tag > 0 && $heading_tag < 7 ? "h{$heading_tag}" : 'h5';
-    }
-
-    protected static function headingSpacer($heading_tag)
-    {
-        return EEH_Debug_Tools::plainOutput() && ($heading_tag === 'h1' || $heading_tag === 'h2')
-            ? self::lineBreak()
-            : '';
-    }
-
-
-    protected static function lineBreak()
-    {
-        return defined('DOING_AJAX') && DOING_AJAX ? '<br />' : "\n";
-    }
-
-
-    protected static function plainOutput()
-    {
-        return defined('EE_TESTS_DIR')
-               || (defined('DOING_AJAX') && DOING_AJAX)
-               || (
-                   isset($_SERVER['REQUEST_URI'])
-                   && strpos(parse_url($_SERVER['REQUEST_URI'], PHP_URL_PATH), 'wp-json') !== false
-               );
-    }
-
-
-    /**
-     * @param string $var_name
-     * @param string $heading_tag
-     * @param string $margin
-     * @param int    $line
-     * @return string
-     */
-    protected static function heading($var_name = '', $heading_tag = 'h5', $margin = '', $line = 0)
-    {
-        if (EEH_Debug_Tools::plainOutput()) {
-            $heading = '';
-            if ($heading_tag === 'h1' || $heading_tag === 'h2') {
-                $heading .= self::lineBreak();
-            }
-            $heading .= self::lineBreak() . "{$line}) {$var_name}";
-            return $heading;
-        }
-        $margin = "25px 0 0 {$margin}";
-        return '<' . $heading_tag . ' style="color:#2EA2CC; margin:' . $margin . ';"><b>' . $var_name . '</b>';
-    }
-
-
-
-    /**
-     * @param string $heading_tag
-     * @return string
-     */
-    protected static function headingX($heading_tag = 'h5')
-    {
-        if (EEH_Debug_Tools::plainOutput()) {
-            return '';
-        }
-        return '</' . $heading_tag . '>';
-    }
-
-
-
-    /**
-     * @param string $content
-     * @return string
-     */
-    protected static function grey_span($content = '')
-    {
-        if (EEH_Debug_Tools::plainOutput()) {
-            return $content;
-        }
-        return '<span style="color:#999">' . $content . '</span>';
-    }
-
-
-
-    /**
-     * @param string $file
-     * @param int    $line
-     * @return string
-     */
-    protected static function file_and_line($file, $line, $heading_tag)
-    {
-        if ($file === '' || $line === '') {
-            return '';
-        }
-        $file = str_replace(EE_PLUGIN_DIR_PATH, '/', $file);
-        if (EEH_Debug_Tools::plainOutput()) {
-            if ($heading_tag === 'h1' || $heading_tag === 'h2') {
-                return " ({$file})";
-            }
-            return '';
-        }
-        return '<br /><span style="font-size:9px;font-weight:normal;color:#666;line-height: 12px;">'
-               . $file
-               . '<br />line no: '
-               . $line
-               . '</span>';
-    }
-
-
-
-    /**
-     * @param string $content
-     * @return string
-     */
-    protected static function orange_span($content = '')
-    {
-        if (EEH_Debug_Tools::plainOutput()) {
-            return $content;
-        }
-        return '<span style="color:#E76700">' . $content . '</span>';
-    }
-
-
-
-    /**
-     * @param mixed $var
-     * @return string
-     */
-    protected static function pre_span($var)
-    {
-        ob_start();
-        var_dump($var);
-        $var = ob_get_clean();
-        if (EEH_Debug_Tools::plainOutput()) {
-            return str_replace("\n", '', $var);
-        }
-        return '<pre style="color:#999; padding:1em; background: #fff">' . $var . '</pre>';
-    }
-
-
-
-    /**
-     * @param mixed      $var
-     * @param string     $var_name
-     * @param string     $file
-     * @param int|string $line
-     * @param int|string $heading_tag
-     * @param bool       $die
-     */
-    public static function printr(
-        $var,
-        $var_name = '',
-        $file = '',
-        $line = '',
-        $heading_tag = 5,
-        $die = false
-    ) {
-        // return;
-        $file = str_replace(rtrim(ABSPATH, '\\/'), '', $file);
-        $margin = is_admin() ? ' 180px' : '0';
-        if (is_string($var)) {
-            EEH_Debug_Tools::printv($var, $var_name, $file, $line, $heading_tag, $die, $margin);
-            return;
-        }
-        if (is_object($var)) {
-            $var_name = ! $var_name ? 'object' : $var_name;
-        } elseif (is_array($var)) {
-            $var_name = ! $var_name ? 'array' : $var_name;
-        } elseif (is_numeric($var)) {
-            $var_name = ! $var_name ? 'numeric' : $var_name;
-        } elseif ($var === null) {
-            $var_name = ! $var_name ? 'null' : $var_name;
-        }
-        $var_name = ucwords(str_replace(array('$', '_'), array('', ' '), $var_name));
-        $heading_tag = EEH_Debug_Tools::headingTag($heading_tag);
-        $result = EEH_Debug_Tools::headingSpacer($heading_tag);
-        $result .= EEH_Debug_Tools::heading($var_name, $heading_tag, $margin, $line);
-        $result .= EEH_Debug_Tools::grey_span(' : ') . EEH_Debug_Tools::orange_span(
-            EEH_Debug_Tools::pre_span($var)
-        );
-        $result .= EEH_Debug_Tools::file_and_line($file, $line, $heading_tag);
-        $result .= EEH_Debug_Tools::headingX($heading_tag);
-        if ($die) {
-            die($result);
-        }
-        echo wp_kses($result, AllowedTags::getWithFormTags());
-    }
-
-
-
-    /******************** deprecated ********************/
-
-
-
-    /**
-     * @deprecated 4.9.39.rc.034
-     */
-    public function reset_times()
-    {
-        Benchmark::resetTimes();
-    }
-
-
-
-    /**
-     * @deprecated 4.9.39.rc.034
-     * @param null $timer_name
-     */
-    public function start_timer($timer_name = null)
-    {
-        Benchmark::startTimer($timer_name);
-    }
-
-
-
-    /**
-     * @deprecated 4.9.39.rc.034
-     * @param string $timer_name
-     */
-    public function stop_timer($timer_name = '')
-    {
-        Benchmark::stopTimer($timer_name);
-    }
-
-
-
-    /**
-     * @deprecated 4.9.39.rc.034
-     * @param string  $label      The label to show for this time eg "Start of calling Some_Class::some_function"
-     * @param boolean $output_now whether to echo now, or wait until EEH_Debug_Tools::show_times() is called
-     * @return void
-     */
-    public function measure_memory($label, $output_now = false)
-    {
-        Benchmark::measureMemory($label, $output_now);
-    }
-
-
-
-    /**
-     * @deprecated 4.9.39.rc.034
-     * @param int $size
-     * @return string
-     */
-    public function convert($size)
-    {
-        return Benchmark::convert($size);
-    }
-
-
-
-    /**
-     * @deprecated 4.9.39.rc.034
-     * @param bool $output_now
-     * @return string
-     */
-    public function show_times($output_now = true)
-    {
-        return Benchmark::displayResults($output_now);
-    }
-
-
-
-    /**
-     * @deprecated 4.9.39.rc.034
-     * @param string $timer_name
-     * @param float  $total_time
-     * @return string
-     */
-    public function format_time($timer_name, $total_time)
-    {
-        return Benchmark::formatTime($timer_name, $total_time);
-    }
+	/**
+	 *    instance of the EEH_Autoloader object
+	 *
+	 * @var    $_instance
+	 * @access    private
+	 */
+	private static $_instance;
+
+	/**
+	 * @var array
+	 */
+	protected $_memory_usage_points = array();
+
+
+
+	/**
+	 * @singleton method used to instantiate class object
+	 * @access    public
+	 * @return EEH_Debug_Tools
+	 */
+	public static function instance()
+	{
+		// check if class object is instantiated, and instantiated properly
+		if (! self::$_instance instanceof EEH_Debug_Tools) {
+			self::$_instance = new self();
+		}
+		return self::$_instance;
+	}
+
+
+
+	/**
+	 * private class constructor
+	 */
+	private function __construct()
+	{
+		// load Kint PHP debugging library
+		if (
+			defined('EE_LOAD_KINT')
+			&& ! class_exists('Kint')
+			&& file_exists(EE_PLUGIN_DIR_PATH . 'tests/kint/Kint.class.php')
+		) {
+			// despite EE4 having a check for an existing copy of the Kint debugging class,
+			// if another plugin was loaded AFTER EE4 and they did NOT perform a similar check,
+			// then hilarity would ensue as PHP throws a "Cannot redeclare class Kint" error
+			// so we've moved it to our test folder so that it is not included with production releases
+			// plz use https://wordpress.org/plugins/kint-debugger/  if testing production versions of EE
+			require_once(EE_PLUGIN_DIR_PATH . 'tests/kint/Kint.class.php');
+		}
+		$plugin = basename(EE_PLUGIN_DIR_PATH);
+		add_action("activate_{$plugin}", array('EEH_Debug_Tools', 'ee_plugin_activation_errors'));
+		add_action('activated_plugin', array('EEH_Debug_Tools', 'ee_plugin_activation_errors'));
+		add_action('shutdown', array('EEH_Debug_Tools', 'show_db_name'));
+	}
+
+
+
+	/**
+	 *    show_db_name
+	 *
+	 * @return void
+	 */
+	public static function show_db_name()
+	{
+		if (! defined('DOING_AJAX') && (defined('EE_ERROR_EMAILS') && EE_ERROR_EMAILS)) {
+			echo '<p style="font-size:10px;font-weight:normal;color:#E76700;margin: 1em 2em; text-align: right;">DB_NAME: '
+				 . DB_NAME
+				 . '</p>';
+		}
+		if (EE_DEBUG) {
+			Benchmark::displayResults();
+		}
+	}
+
+
+
+	/**
+	 *    dump EE_Session object at bottom of page after everything else has happened
+	 *
+	 * @return void
+	 */
+	public function espresso_session_footer_dump()
+	{
+		if (
+			(defined('WP_DEBUG') && WP_DEBUG)
+			&& ! defined('DOING_AJAX')
+			&& class_exists('Kint')
+			&& function_exists('wp_get_current_user')
+			&& current_user_can('update_core')
+			&& class_exists('EE_Registry')
+		) {
+			Kint::dump(EE_Registry::instance()->SSN->id());
+			Kint::dump(EE_Registry::instance()->SSN);
+			//          Kint::dump( EE_Registry::instance()->SSN->get_session_data('cart')->get_tickets() );
+			$this->espresso_list_hooked_functions();
+			Benchmark::displayResults();
+		}
+	}
+
+
+
+	/**
+	 *    List All Hooked Functions
+	 *    to list all functions for a specific hook, add ee_list_hooks={hook-name} to URL
+	 *    http://wp.smashingmagazine.com/2009/08/18/10-useful-wordpress-hook-hacks/
+	 *
+	 * @param string $tag
+	 * @return void
+	 */
+	public function espresso_list_hooked_functions($tag = '')
+	{
+		global $wp_filter;
+		echo '<br/><br/><br/><h3>Hooked Functions</h3>';
+		if ($tag) {
+			$hook[ $tag ] = $wp_filter[ $tag ];
+			if (! is_array($hook[ $tag ])) {
+				trigger_error("Nothing found for '$tag' hook", E_USER_WARNING);
+				return;
+			}
+			echo '<h5>For Tag: ' . esc_html($tag) . '</h5>';
+		} else {
+			$hook = is_array($wp_filter) ? $wp_filter : array($wp_filter);
+			ksort($hook);
+		}
+		foreach ($hook as $tag_name => $priorities) {
+			echo "<br />&gt;&gt;&gt;&gt;&gt;\t<strong>esc_html($tag_name)</strong><br />";
+			ksort($priorities);
+			foreach ($priorities as $priority => $function) {
+				echo esc_html($priority);
+				foreach ($function as $name => $properties) {
+					$name = esc_html($name);
+					echo "\t$name<br />";
+				}
+			}
+		}
+	}
+
+
+
+	/**
+	 *    registered_filter_callbacks
+	 *
+	 * @param string $hook_name
+	 * @return array
+	 */
+	public static function registered_filter_callbacks($hook_name = '')
+	{
+		$filters = array();
+		global $wp_filter;
+		if (isset($wp_filter[ $hook_name ])) {
+			$filters[ $hook_name ] = array();
+			foreach ($wp_filter[ $hook_name ] as $priority => $callbacks) {
+				$filters[ $hook_name ][ $priority ] = array();
+				foreach ($callbacks as $callback) {
+					$filters[ $hook_name ][ $priority ][] = $callback['function'];
+				}
+			}
+		}
+		return $filters;
+	}
+
+
+
+	/**
+	 *    captures plugin activation errors for debugging
+	 *
+	 * @return void
+	 * @throws EE_Error
+	 */
+	public static function ee_plugin_activation_errors()
+	{
+		if (WP_DEBUG) {
+			$activation_errors = ob_get_contents();
+			if (! empty($activation_errors)) {
+				$activation_errors = date('Y-m-d H:i:s') . "\n" . $activation_errors;
+			}
+			espresso_load_required('EEH_File', EE_HELPERS . 'EEH_File.helper.php');
+			if (class_exists('EEH_File')) {
+				try {
+					EEH_File::ensure_file_exists_and_is_writable(
+						EVENT_ESPRESSO_UPLOAD_DIR . 'logs/espresso_plugin_activation_errors.html'
+					);
+					EEH_File::write_to_file(
+						EVENT_ESPRESSO_UPLOAD_DIR . 'logs/espresso_plugin_activation_errors.html',
+						$activation_errors
+					);
+				} catch (EE_Error $e) {
+					EE_Error::add_error(
+						sprintf(
+							esc_html__(
+								'The Event Espresso activation errors file could not be setup because: %s',
+								'event_espresso'
+							),
+							$e->getMessage()
+						),
+						__FILE__,
+						__FUNCTION__,
+						__LINE__
+					);
+				}
+			} else {
+				// old school attempt
+				file_put_contents(
+					EVENT_ESPRESSO_UPLOAD_DIR . 'logs/espresso_plugin_activation_errors.html',
+					$activation_errors
+				);
+			}
+			$activation_errors = get_option('ee_plugin_activation_errors', '') . $activation_errors;
+			update_option('ee_plugin_activation_errors', $activation_errors);
+		}
+	}
+
+
+
+	/**
+	 * This basically mimics the WordPress _doing_it_wrong() function except adds our own messaging etc.
+	 * Very useful for providing helpful messages to developers when the method of doing something has been deprecated,
+	 * or we want to make sure they use something the right way.
+	 *
+	 * @access public
+	 * @param string $function      The function that was called
+	 * @param string $message       A message explaining what has been done incorrectly
+	 * @param string $version       The version of Event Espresso where the error was added
+	 * @param string $applies_when  a version string for when you want the doing_it_wrong notice to begin appearing
+	 *                              for a deprecated function. This allows deprecation to occur during one version,
+	 *                              but not have any notices appear until a later version. This allows developers
+	 *                              extra time to update their code before notices appear.
+	 * @param int    $error_type
+	 * @uses   trigger_error()
+	 */
+	public function doing_it_wrong(
+		$function,
+		$message,
+		$version,
+		$applies_when = '',
+		$error_type = null
+	) {
+		$applies_when = ! empty($applies_when) ? $applies_when : espresso_version();
+		$error_type = $error_type !== null ? $error_type : E_USER_NOTICE;
+		// because we swapped the parameter order around for the last two params,
+		// let's verify that some third party isn't still passing an error type value for the third param
+		if (is_int($applies_when)) {
+			$error_type = $applies_when;
+			$applies_when = espresso_version();
+		}
+		// if not displaying notices yet, then just leave
+		if (version_compare(espresso_version(), $applies_when, '<')) {
+			return;
+		}
+		do_action('AHEE__EEH_Debug_Tools__doing_it_wrong_run', $function, $message, $version);
+		$version = $version === null
+			? ''
+			: sprintf(
+				esc_html__('(This message was added in version %s of Event Espresso)', 'event_espresso'),
+				$version
+			);
+		$error_message = sprintf(
+			esc_html__('%1$s was called %2$sincorrectly%3$s. %4$s %5$s', 'event_espresso'),
+			$function,
+			'<strong>',
+			'</strong>',
+			$message,
+			$version
+		);
+		// don't trigger error if doing ajax,
+		// instead we'll add a transient EE_Error notice that in theory should show on the next request.
+		if (defined('DOING_AJAX') && DOING_AJAX) {
+			$error_message .= ' ' . esc_html__(
+				'This is a doing_it_wrong message that was triggered during an ajax request.  The request params on this request were: ',
+				'event_espresso'
+			);
+			$request = LoaderFactory::getLoader()->getShared(RequestInterface::class);
+			$error_message .= '<ul><li>';
+			$error_message .= implode('</li><li>', $request->requestParams());
+			$error_message .= '</ul>';
+			EE_Error::add_error($error_message, 'debug::doing_it_wrong', $function, '42');
+			// now we set this on the transient so it shows up on the next request.
+			EE_Error::get_notices(false, true);
+		} else {
+			trigger_error($error_message, $error_type);
+		}
+	}
+
+
+
+
+	/**
+	 * Logger helpers
+	 */
+	/**
+	 * debug
+	 *
+	 * @param string $class
+	 * @param string $func
+	 * @param string $line
+	 * @param array  $info
+	 * @param bool   $display_request
+	 * @param string $debug_index
+	 * @param string $debug_key
+	 */
+	public static function log(
+		$class = '',
+		$func = '',
+		$line = '',
+		$info = array(),
+		$display_request = false,
+		$debug_index = '',
+		$debug_key = 'EE_DEBUG_SPCO'
+	) {
+		if (WP_DEBUG) {
+			$debug_key = $debug_key . '_' . EE_Session::instance()->id();
+			$debug_data = get_option($debug_key, array());
+			$default_data = array(
+				$class => $func . '() : ' . $line,
+			);
+			// don't serialize objects
+			$info = self::strip_objects($info);
+			$index = ! empty($debug_index) ? $debug_index : 0;
+			if (! isset($debug_data[ $index ])) {
+				$debug_data[ $index ] = array();
+			}
+			$debug_data[ $index ][ microtime() ] = array_merge($default_data, $info);
+			update_option($debug_key, $debug_data);
+		}
+	}
+
+
+
+	/**
+	 * strip_objects
+	 *
+	 * @param array $info
+	 * @return array
+	 */
+	public static function strip_objects($info = array())
+	{
+		foreach ($info as $key => $value) {
+			if (is_array($value)) {
+				$info[ $key ] = self::strip_objects($value);
+			} elseif (is_object($value)) {
+				$object_class = get_class($value);
+				$info[ $object_class ] = array();
+				$info[ $object_class ]['ID'] = method_exists($value, 'ID') ? $value->ID() : spl_object_hash($value);
+				if (method_exists($value, 'ID')) {
+					$info[ $object_class ]['ID'] = $value->ID();
+				}
+				if (method_exists($value, 'status')) {
+					$info[ $object_class ]['status'] = $value->status();
+				} elseif (method_exists($value, 'status_ID')) {
+					$info[ $object_class ]['status'] = $value->status_ID();
+				}
+				unset($info[ $key ]);
+			}
+		}
+		return (array) $info;
+	}
+
+
+
+	/**
+	 * @param mixed      $var
+	 * @param string     $var_name
+	 * @param string     $file
+	 * @param int|string $line
+	 * @param int|string $heading_tag
+	 * @param bool       $die
+	 * @param string     $margin
+	 */
+	public static function printv(
+		$var,
+		$var_name = '',
+		$file = '',
+		$line = '',
+		$heading_tag = 5,
+		$die = false,
+		$margin = ''
+	) {
+		$var_name = ! $var_name ? 'string' : $var_name;
+		$var_name = ucwords(str_replace('$', '', $var_name));
+		$is_method = method_exists($var_name, $var);
+		$var_name = ucwords(str_replace('_', ' ', $var_name));
+		$heading_tag = EEH_Debug_Tools::headingTag($heading_tag);
+		$result = EEH_Debug_Tools::headingSpacer($heading_tag);
+		$result .= EEH_Debug_Tools::heading($var_name, $heading_tag, $margin, $line);
+		$result .= $is_method
+			? EEH_Debug_Tools::grey_span('::') . EEH_Debug_Tools::orange_span($var . '()')
+			: EEH_Debug_Tools::grey_span(' : ') . EEH_Debug_Tools::orange_span($var);
+		$result .= EEH_Debug_Tools::file_and_line($file, $line, $heading_tag);
+		$result .= EEH_Debug_Tools::headingX($heading_tag);
+		if ($die) {
+			die($result);
+		}
+		echo wp_kses($result, AllowedTags::getWithFormTags());
+	}
+
+
+	protected static function headingTag($heading_tag)
+	{
+		$heading_tag = absint($heading_tag);
+		return $heading_tag > 0 && $heading_tag < 7 ? "h{$heading_tag}" : 'h5';
+	}
+
+	protected static function headingSpacer($heading_tag)
+	{
+		return EEH_Debug_Tools::plainOutput() && ($heading_tag === 'h1' || $heading_tag === 'h2')
+			? self::lineBreak()
+			: '';
+	}
+
+
+	protected static function lineBreak()
+	{
+		return defined('DOING_AJAX') && DOING_AJAX ? '<br />' : "\n";
+	}
+
+
+	protected static function plainOutput()
+	{
+		return defined('EE_TESTS_DIR')
+			   || (defined('DOING_AJAX') && DOING_AJAX)
+			   || (
+				   isset($_SERVER['REQUEST_URI'])
+				   && strpos(parse_url($_SERVER['REQUEST_URI'], PHP_URL_PATH), 'wp-json') !== false
+			   );
+	}
+
+
+	/**
+	 * @param string $var_name
+	 * @param string $heading_tag
+	 * @param string $margin
+	 * @param int    $line
+	 * @return string
+	 */
+	protected static function heading($var_name = '', $heading_tag = 'h5', $margin = '', $line = 0)
+	{
+		if (EEH_Debug_Tools::plainOutput()) {
+			$heading = '';
+			if ($heading_tag === 'h1' || $heading_tag === 'h2') {
+				$heading .= self::lineBreak();
+			}
+			$heading .= self::lineBreak() . "{$line}) {$var_name}";
+			return $heading;
+		}
+		$margin = "25px 0 0 {$margin}";
+		return '<' . $heading_tag . ' style="color:#2EA2CC; margin:' . $margin . ';"><b>' . $var_name . '</b>';
+	}
+
+
+
+	/**
+	 * @param string $heading_tag
+	 * @return string
+	 */
+	protected static function headingX($heading_tag = 'h5')
+	{
+		if (EEH_Debug_Tools::plainOutput()) {
+			return '';
+		}
+		return '</' . $heading_tag . '>';
+	}
+
+
+
+	/**
+	 * @param string $content
+	 * @return string
+	 */
+	protected static function grey_span($content = '')
+	{
+		if (EEH_Debug_Tools::plainOutput()) {
+			return $content;
+		}
+		return '<span style="color:#999">' . $content . '</span>';
+	}
+
+
+
+	/**
+	 * @param string $file
+	 * @param int    $line
+	 * @return string
+	 */
+	protected static function file_and_line($file, $line, $heading_tag)
+	{
+		if ($file === '' || $line === '') {
+			return '';
+		}
+		$file = str_replace(EE_PLUGIN_DIR_PATH, '/', $file);
+		if (EEH_Debug_Tools::plainOutput()) {
+			if ($heading_tag === 'h1' || $heading_tag === 'h2') {
+				return " ({$file})";
+			}
+			return '';
+		}
+		return '<br /><span style="font-size:9px;font-weight:normal;color:#666;line-height: 12px;">'
+			   . $file
+			   . '<br />line no: '
+			   . $line
+			   . '</span>';
+	}
+
+
+
+	/**
+	 * @param string $content
+	 * @return string
+	 */
+	protected static function orange_span($content = '')
+	{
+		if (EEH_Debug_Tools::plainOutput()) {
+			return $content;
+		}
+		return '<span style="color:#E76700">' . $content . '</span>';
+	}
+
+
+
+	/**
+	 * @param mixed $var
+	 * @return string
+	 */
+	protected static function pre_span($var)
+	{
+		ob_start();
+		var_dump($var);
+		$var = ob_get_clean();
+		if (EEH_Debug_Tools::plainOutput()) {
+			return str_replace("\n", '', $var);
+		}
+		return '<pre style="color:#999; padding:1em; background: #fff">' . $var . '</pre>';
+	}
+
+
+
+	/**
+	 * @param mixed      $var
+	 * @param string     $var_name
+	 * @param string     $file
+	 * @param int|string $line
+	 * @param int|string $heading_tag
+	 * @param bool       $die
+	 */
+	public static function printr(
+		$var,
+		$var_name = '',
+		$file = '',
+		$line = '',
+		$heading_tag = 5,
+		$die = false
+	) {
+		// return;
+		$file = str_replace(rtrim(ABSPATH, '\\/'), '', $file);
+		$margin = is_admin() ? ' 180px' : '0';
+		if (is_string($var)) {
+			EEH_Debug_Tools::printv($var, $var_name, $file, $line, $heading_tag, $die, $margin);
+			return;
+		}
+		if (is_object($var)) {
+			$var_name = ! $var_name ? 'object' : $var_name;
+		} elseif (is_array($var)) {
+			$var_name = ! $var_name ? 'array' : $var_name;
+		} elseif (is_numeric($var)) {
+			$var_name = ! $var_name ? 'numeric' : $var_name;
+		} elseif ($var === null) {
+			$var_name = ! $var_name ? 'null' : $var_name;
+		}
+		$var_name = ucwords(str_replace(array('$', '_'), array('', ' '), $var_name));
+		$heading_tag = EEH_Debug_Tools::headingTag($heading_tag);
+		$result = EEH_Debug_Tools::headingSpacer($heading_tag);
+		$result .= EEH_Debug_Tools::heading($var_name, $heading_tag, $margin, $line);
+		$result .= EEH_Debug_Tools::grey_span(' : ') . EEH_Debug_Tools::orange_span(
+			EEH_Debug_Tools::pre_span($var)
+		);
+		$result .= EEH_Debug_Tools::file_and_line($file, $line, $heading_tag);
+		$result .= EEH_Debug_Tools::headingX($heading_tag);
+		if ($die) {
+			die($result);
+		}
+		echo wp_kses($result, AllowedTags::getWithFormTags());
+	}
+
+
+
+	/******************** deprecated ********************/
+
+
+
+	/**
+	 * @deprecated 4.9.39.rc.034
+	 */
+	public function reset_times()
+	{
+		Benchmark::resetTimes();
+	}
+
+
+
+	/**
+	 * @deprecated 4.9.39.rc.034
+	 * @param null $timer_name
+	 */
+	public function start_timer($timer_name = null)
+	{
+		Benchmark::startTimer($timer_name);
+	}
+
+
+
+	/**
+	 * @deprecated 4.9.39.rc.034
+	 * @param string $timer_name
+	 */
+	public function stop_timer($timer_name = '')
+	{
+		Benchmark::stopTimer($timer_name);
+	}
+
+
+
+	/**
+	 * @deprecated 4.9.39.rc.034
+	 * @param string  $label      The label to show for this time eg "Start of calling Some_Class::some_function"
+	 * @param boolean $output_now whether to echo now, or wait until EEH_Debug_Tools::show_times() is called
+	 * @return void
+	 */
+	public function measure_memory($label, $output_now = false)
+	{
+		Benchmark::measureMemory($label, $output_now);
+	}
+
+
+
+	/**
+	 * @deprecated 4.9.39.rc.034
+	 * @param int $size
+	 * @return string
+	 */
+	public function convert($size)
+	{
+		return Benchmark::convert($size);
+	}
+
+
+
+	/**
+	 * @deprecated 4.9.39.rc.034
+	 * @param bool $output_now
+	 * @return string
+	 */
+	public function show_times($output_now = true)
+	{
+		return Benchmark::displayResults($output_now);
+	}
+
+
+
+	/**
+	 * @deprecated 4.9.39.rc.034
+	 * @param string $timer_name
+	 * @param float  $total_time
+	 * @return string
+	 */
+	public function format_time($timer_name, $total_time)
+	{
+		return Benchmark::formatTime($timer_name, $total_time);
+	}
 }
 
 
@@ -692,31 +692,31 @@ 
  * Plugin URI: http://upthemes.com/plugins/kint-debugger/
  */
 if (class_exists('Kint') && ! function_exists('dump_wp_query')) {
-    function dump_wp_query()
-    {
-        global $wp_query;
-        d($wp_query);
-    }
+	function dump_wp_query()
+	{
+		global $wp_query;
+		d($wp_query);
+	}
 }
 /**
  * borrowed from Kint Debugger
  * Plugin URI: http://upthemes.com/plugins/kint-debugger/
  */
 if (class_exists('Kint') && ! function_exists('dump_wp')) {
-    function dump_wp()
-    {
-        global $wp;
-        d($wp);
-    }
+	function dump_wp()
+	{
+		global $wp;
+		d($wp);
+	}
 }
 /**
  * borrowed from Kint Debugger
  * Plugin URI: http://upthemes.com/plugins/kint-debugger/
  */
 if (class_exists('Kint') && ! function_exists('dump_post')) {
-    function dump_post()
-    {
-        global $post;
-        d($post);
-    }
+	function dump_post()
+	{
+		global $post;
+		d($post);
+	}
 }

core/exceptions/ExceptionStackTraceDisplay.php

Indentation +279 added lines, -279 removed lines

@@ -20,159 +20,159 @@ 
 class ExceptionStackTraceDisplay
 {
 
-    /**
-     * @var   string
-     * @since 4.10.24.p
-     */
-    private $class_name = '';
+	/**
+	 * @var   string
+	 * @since 4.10.24.p
+	 */
+	private $class_name = '';
 
-    /**
-     * @var   string
-     * @since 4.10.24.p
-     */
-    private $error_code = '';
+	/**
+	 * @var   string
+	 * @since 4.10.24.p
+	 */
+	private $error_code = '';
 
 
-    /**
-     * @param Exception $exception
-     * @throws Exception
-     */
-    public function __construct(Exception $exception)
-    {
-        if (WP_DEBUG && ! defined('EE_TESTS_DIR')) {
-            $this->displayException($exception);
-        } else {
-            throw $exception;
-        }
-    }
+	/**
+	 * @param Exception $exception
+	 * @throws Exception
+	 */
+	public function __construct(Exception $exception)
+	{
+		if (WP_DEBUG && ! defined('EE_TESTS_DIR')) {
+			$this->displayException($exception);
+		} else {
+			throw $exception;
+		}
+	}
 
 
-    /**
-     * @access protected
-     * @param Exception $exception
-     * @throws ReflectionException
-     */
-    protected function displayException(Exception $exception)
-    {
-        // get separate user and developer messages if they exist
-        $msg = explode('||', $exception->getMessage());
-        $user_msg = $msg[0];
-        $dev_msg = isset($msg[1]) ? $msg[1] : $msg[0];
-        $msg = WP_DEBUG ? $dev_msg : $user_msg;
-        // process trace info
-        $trace_details = $this->traceDetails($exception);
-        $code          = $exception->getCode() ?: $this->error_code;
-        // add helpful developer messages if debugging is on
-        // or generic non-identifying messages for non-privileged users
-        $error_message = WP_DEBUG
-            ? $this->developerError($exception, $msg, $code, $trace_details)
-            : $this->genericError($msg, $code);
-        // start gathering output
-        $output = '
+	/**
+	 * @access protected
+	 * @param Exception $exception
+	 * @throws ReflectionException
+	 */
+	protected function displayException(Exception $exception)
+	{
+		// get separate user and developer messages if they exist
+		$msg = explode('||', $exception->getMessage());
+		$user_msg = $msg[0];
+		$dev_msg = isset($msg[1]) ? $msg[1] : $msg[0];
+		$msg = WP_DEBUG ? $dev_msg : $user_msg;
+		// process trace info
+		$trace_details = $this->traceDetails($exception);
+		$code          = $exception->getCode() ?: $this->error_code;
+		// add helpful developer messages if debugging is on
+		// or generic non-identifying messages for non-privileged users
+		$error_message = WP_DEBUG
+			? $this->developerError($exception, $msg, $code, $trace_details)
+			: $this->genericError($msg, $code);
+		// start gathering output
+		$output = '
 <div id="ee-error-message" class="error">
     ' . $error_message . '
 </div>';
-        $styles = $this->exceptionStyles();
-        $scripts = $this->printScripts(true);
-        if (defined('DOING_AJAX')) {
-            echo wp_json_encode(array('error' => $styles . $output . $scripts));
-            exit();
-        }
-        echo $styles, wp_kses($output, AllowedTags::getWithFormTags()), $scripts;
-    }
+		$styles = $this->exceptionStyles();
+		$scripts = $this->printScripts(true);
+		if (defined('DOING_AJAX')) {
+			echo wp_json_encode(array('error' => $styles . $output . $scripts));
+			exit();
+		}
+		echo $styles, wp_kses($output, AllowedTags::getWithFormTags()), $scripts;
+	}
 
 
-    private function genericError($msg, $code)
-    {
-        return '
+	private function genericError($msg, $code)
+	{
+		return '
     <p>
         <span class="ee-error-user-msg-spn">' . trim($msg) . '</span> &nbsp; <sup>' . $code . '</sup>
     </p>';
-    }
+	}
 
 
-    /**
-     * @throws ReflectionException
-     */
-    private function developerError(Exception $exception, $msg, $code, $trace_details)
-    {
-        $time = time();
-        return '
+	/**
+	 * @throws ReflectionException
+	 */
+	private function developerError(Exception $exception, $msg, $code, $trace_details)
+	{
+		$time = time();
+		return '
 	<div class="ee-error-dev-msg-dv">
 		<p class="ee-error-dev-msg-pg">
 		    '
-            . sprintf(
-                esc_html__('%1$sAn %2$s was thrown!%3$s code: %4$s', 'event_espresso'),
-                '<strong class="ee-error-dev-msg-str">',
-                get_class($exception),
-                '</strong>  &nbsp; <span>',
-                $code . '</span>'
-            )
-            . '<br />
+			. sprintf(
+				esc_html__('%1$sAn %2$s was thrown!%3$s code: %4$s', 'event_espresso'),
+				'<strong class="ee-error-dev-msg-str">',
+				get_class($exception),
+				'</strong>  &nbsp; <span>',
+				$code . '</span>'
+			)
+			. '<br />
             <span class="big-text">"' . trim($msg) . '"</span><br/>
             <a id="display-ee-error-trace-1'
-               . $time
-               . '" class="display-ee-error-trace-lnk small-text" rel="ee-error-trace-1'
-               . $time
-               . '">
+			   . $time
+			   . '" class="display-ee-error-trace-lnk small-text" rel="ee-error-trace-1'
+			   . $time
+			   . '">
                 ' . esc_html__('click to view backtrace and class/method details', 'event_espresso') . '
             </a><br />
             '
-            . $exception->getFile()
-            . sprintf(
-                esc_html__('%1$s( line no: %2$s )%3$s', 'event_espresso'),
-                ' &nbsp; <span class="small-text lt-grey-text">',
-                $exception->getLine(),
-                '</span>'
-            )
-            . '
+			. $exception->getFile()
+			. sprintf(
+				esc_html__('%1$s( line no: %2$s )%3$s', 'event_espresso'),
+				' &nbsp; <span class="small-text lt-grey-text">',
+				$exception->getLine(),
+				'</span>'
+			)
+			. '
         </p>
         <div id="ee-error-trace-1'
-               . $time
-               . '-dv" class="ee-error-trace-dv" style="display: none;">
+			   . $time
+			   . '-dv" class="ee-error-trace-dv" style="display: none;">
             '
-               . $trace_details
-               . $this->classDetails() . '
+			   . $trace_details
+			   . $this->classDetails() . '
         </div>
     </div>';
-    }
+	}
 
 
-    /**
-     * @throws ReflectionException
-     */
-    private function classDetails()
-    {
-        if (empty($this->class_name)) {
-            return '';
-        }
-        $a = new ReflectionClass($this->class_name);
-        return '
+	/**
+	 * @throws ReflectionException
+	 */
+	private function classDetails()
+	{
+		if (empty($this->class_name)) {
+			return '';
+		}
+		$a = new ReflectionClass($this->class_name);
+		return '
             <div style="padding:3px; margin:0 0 1em; border:1px solid #999; background:#fff; border-radius:3px;">
                 <div style="padding:1em 2em; border:1px solid #999; background:#fcfcfc;">
                     <h3>' . esc_html__('Class Details', 'event_espresso') . '</h3>
                     <pre>' . $a . '</pre>
                 </div>
             </div>';
-    }
+	}
 
-    /**
-     * @param Exception $exception
-     * @return string
-     * @throws ReflectionException
-     * @since 4.10.24.p
-     */
-    private function traceDetails(Exception $exception)
-    {
-        $trace = $exception->getTrace();
-        if (empty($trace)) {
-            return esc_html__(
-                'Sorry, but no trace information was available for this exception.',
-                'event_espresso'
-            );
-        }
+	/**
+	 * @param Exception $exception
+	 * @return string
+	 * @throws ReflectionException
+	 * @since 4.10.24.p
+	 */
+	private function traceDetails(Exception $exception)
+	{
+		$trace = $exception->getTrace();
+		if (empty($trace)) {
+			return esc_html__(
+				'Sorry, but no trace information was available for this exception.',
+				'event_espresso'
+			);
+		}
 
-        $trace_details = '
+		$trace_details = '
         <div id="ee-trace-details">
             <table>
                 <tr>
@@ -181,160 +181,160 @@ 
                     <th scope="col" class="ee-align-left" style="width:40%;">File</th>
                     <th scope="col" class="ee-align-left">
                     ' . esc_html__('Class', 'event_espresso')
-                              . '->'
-                              . esc_html__('Method( arguments )', 'event_espresso') . '
+							  . '->'
+							  . esc_html__('Method( arguments )', 'event_espresso') . '
                     </th>
                 </tr>';
-        $last_on_stack = count($trace) - 1;
-        // reverse array so that stack is in proper chronological order
-        $sorted_trace = array_reverse($trace);
-        foreach ($sorted_trace as $nmbr => $trace) {
-            $this->class_name = isset($trace['class']) ? $trace['class'] : '';
-            $file     = isset($trace['file']) ? $trace['file'] : '';
-            $type     = isset($trace['type']) ? $trace['type'] : '';
-            $function = isset($trace['function']) ? $trace['function'] : '';
-            $args     = isset($trace['args']) ? $this->_convert_args_to_string($trace['args']) : '';
-            $args     = isset($trace['args']) && count($trace['args']) > 4 ? ' <br />' . $args . '<br />' : $args;
-            $line     = isset($trace['line']) ? $trace['line'] : '';
-            if (empty($file) && ! empty($this->class_name)) {
-                $a    = new ReflectionClass($this->class_name);
-                $file = $a->getFileName();
-                if (empty($line) && ! empty($function)) {
-                    try {
-                        // if $function is a closure, this throws an exception
-                        $b    = new ReflectionMethod($this->class_name, $function);
-                        $line = $b->getStartLine();
-                    } catch (Exception $closure_exception) {
-                        $line = 'unknown';
-                    }
-                }
-            }
-            if ($nmbr === $last_on_stack) {
-                $file       = $exception->getFile() ?: $file;
-                $line       = $exception->getLine() ?: $line;
-                $this->error_code = $this->generate_error_code($file, $trace['function'], $line);
-            }
-            $file          = EEH_File::standardise_directory_separators($file);
-            $nmbr          = ! empty($nmbr) ? $nmbr : '&nbsp;';
-            $line          = ! empty($line) ? $line : '&nbsp;';
-            $file          = ! empty($file) ? $file : '&nbsp;';
-            $type          = ! empty($type) ? $type : '';
-            $function      = ! empty($function) ? $function : '';
-            $args          = ! empty($args) ? '( ' . $args . ' )' : '()';
-            $trace_details .= '
+		$last_on_stack = count($trace) - 1;
+		// reverse array so that stack is in proper chronological order
+		$sorted_trace = array_reverse($trace);
+		foreach ($sorted_trace as $nmbr => $trace) {
+			$this->class_name = isset($trace['class']) ? $trace['class'] : '';
+			$file     = isset($trace['file']) ? $trace['file'] : '';
+			$type     = isset($trace['type']) ? $trace['type'] : '';
+			$function = isset($trace['function']) ? $trace['function'] : '';
+			$args     = isset($trace['args']) ? $this->_convert_args_to_string($trace['args']) : '';
+			$args     = isset($trace['args']) && count($trace['args']) > 4 ? ' <br />' . $args . '<br />' : $args;
+			$line     = isset($trace['line']) ? $trace['line'] : '';
+			if (empty($file) && ! empty($this->class_name)) {
+				$a    = new ReflectionClass($this->class_name);
+				$file = $a->getFileName();
+				if (empty($line) && ! empty($function)) {
+					try {
+						// if $function is a closure, this throws an exception
+						$b    = new ReflectionMethod($this->class_name, $function);
+						$line = $b->getStartLine();
+					} catch (Exception $closure_exception) {
+						$line = 'unknown';
+					}
+				}
+			}
+			if ($nmbr === $last_on_stack) {
+				$file       = $exception->getFile() ?: $file;
+				$line       = $exception->getLine() ?: $line;
+				$this->error_code = $this->generate_error_code($file, $trace['function'], $line);
+			}
+			$file          = EEH_File::standardise_directory_separators($file);
+			$nmbr          = ! empty($nmbr) ? $nmbr : '&nbsp;';
+			$line          = ! empty($line) ? $line : '&nbsp;';
+			$file          = ! empty($file) ? $file : '&nbsp;';
+			$type          = ! empty($type) ? $type : '';
+			$function      = ! empty($function) ? $function : '';
+			$args          = ! empty($args) ? '( ' . $args . ' )' : '()';
+			$trace_details .= '
                 <tr>
                     <td class="ee-align-right">' . $nmbr . '</td>
                     <td class="ee-align-right">' . $line . '</td>
                     <td class="ee-align-left">' . $file . '</td>
                     <td class="ee-align-left">' . $this->class_name . $type . $function . $args . '</td>
                 </tr>';
-        }
-        $trace_details .= '
+		}
+		$trace_details .= '
             </table>
         </div>';
-        return $trace_details;
-    }
+		return $trace_details;
+	}
 
 
-    // phpcs:disable PSR1.Methods.CamelCapsMethodName.NotCamelCaps
-    // phpcs:disable PSR2.Methods.MethodDeclaration.Underscore
+	// phpcs:disable PSR1.Methods.CamelCapsMethodName.NotCamelCaps
+	// phpcs:disable PSR2.Methods.MethodDeclaration.Underscore
 
-    /**
-     * generate string from exception trace args
-     *
-     * @param array $arguments
-     * @param int   $indent
-     * @param bool  $array
-     * @return string
-     */
-    private function _convert_args_to_string($arguments = array(), $indent = 0, $array = false)
-    {
-        $args = array();
-        $args_count = count($arguments);
-        if ($args_count > 2) {
-            $indent++;
-            $args[] = '<br />';
-        }
-        $x = 0;
-        foreach ($arguments as $arg) {
-            $x++;
-            for ($i = 0; $i < $indent; $i++) {
-                $args[] = ' &nbsp;&nbsp; ';
-            }
-            if (is_string($arg)) {
-                if (! $array && strlen($arg) > 75) {
-                    $args[] = '<br />';
-                    for ($i = 0; $i <= $indent; $i++) {
-                        $args[] = ' &nbsp;&nbsp; ';
-                    }
-                    $args[] = "'" . $arg . "'<br />";
-                } else {
-                    $args[] = " '" . $arg . "'";
-                }
-            } elseif (is_array($arg)) {
-                $arg_count = count($arg);
-                if ($arg_count > 2) {
-                    $indent++;
-                    $args[] = ' array(' . $this->_convert_args_to_string($arg, $indent, true) . ')';
-                    $indent--;
-                } elseif ($arg_count === 0) {
-                    $args[] = ' array()';
-                } else {
-                    $args[] = ' array( ' . $this->_convert_args_to_string($arg) . ' )';
-                }
-            } elseif ($arg === null) {
-                $args[] = ' null';
-            } elseif (is_bool($arg)) {
-                $args[] = $arg ? ' true' : ' false';
-            } elseif (is_object($arg)) {
-                $args[] = get_class($arg);
-            } elseif (is_resource($arg)) {
-                $args[] = get_resource_type($arg);
-            } else {
-                $args[] = $arg;
-            }
-            if ($x === $args_count) {
-                if ($args_count > 2) {
-                    $args[] = '<br />';
-                    $indent--;
-                    for ($i = 1; $i < $indent; $i++) {
-                        $args[] = ' &nbsp;&nbsp; ';
-                    }
-                }
-            } else {
-                $args[] = $args_count > 2 ? ',<br />' : ', ';
-            }
-        }
-        return implode('', $args);
-    }
+	/**
+	 * generate string from exception trace args
+	 *
+	 * @param array $arguments
+	 * @param int   $indent
+	 * @param bool  $array
+	 * @return string
+	 */
+	private function _convert_args_to_string($arguments = array(), $indent = 0, $array = false)
+	{
+		$args = array();
+		$args_count = count($arguments);
+		if ($args_count > 2) {
+			$indent++;
+			$args[] = '<br />';
+		}
+		$x = 0;
+		foreach ($arguments as $arg) {
+			$x++;
+			for ($i = 0; $i < $indent; $i++) {
+				$args[] = ' &nbsp;&nbsp; ';
+			}
+			if (is_string($arg)) {
+				if (! $array && strlen($arg) > 75) {
+					$args[] = '<br />';
+					for ($i = 0; $i <= $indent; $i++) {
+						$args[] = ' &nbsp;&nbsp; ';
+					}
+					$args[] = "'" . $arg . "'<br />";
+				} else {
+					$args[] = " '" . $arg . "'";
+				}
+			} elseif (is_array($arg)) {
+				$arg_count = count($arg);
+				if ($arg_count > 2) {
+					$indent++;
+					$args[] = ' array(' . $this->_convert_args_to_string($arg, $indent, true) . ')';
+					$indent--;
+				} elseif ($arg_count === 0) {
+					$args[] = ' array()';
+				} else {
+					$args[] = ' array( ' . $this->_convert_args_to_string($arg) . ' )';
+				}
+			} elseif ($arg === null) {
+				$args[] = ' null';
+			} elseif (is_bool($arg)) {
+				$args[] = $arg ? ' true' : ' false';
+			} elseif (is_object($arg)) {
+				$args[] = get_class($arg);
+			} elseif (is_resource($arg)) {
+				$args[] = get_resource_type($arg);
+			} else {
+				$args[] = $arg;
+			}
+			if ($x === $args_count) {
+				if ($args_count > 2) {
+					$args[] = '<br />';
+					$indent--;
+					for ($i = 1; $i < $indent; $i++) {
+						$args[] = ' &nbsp;&nbsp; ';
+					}
+				}
+			} else {
+				$args[] = $args_count > 2 ? ',<br />' : ', ';
+			}
+		}
+		return implode('', $args);
+	}
 
 
-    /**
-     * create error code from filepath, function name,
-     * and line number where exception or error was thrown
-     *
-     * @access protected
-     * @param string $file
-     * @param string $func
-     * @param string $line
-     * @return string
-     */
-    protected function generate_error_code($file = '', $func = '', $line = '')
-    {
-        $file_bits = explode('.', basename($file));
-        $error_code = ! empty($file_bits[0]) ? $file_bits[0] : '';
-        $error_code .= ! empty($func) ? ' - ' . $func : '';
-        $error_code .= ! empty($line) ? ' - ' . $line : '';
-        return $error_code;
-    }
+	/**
+	 * create error code from filepath, function name,
+	 * and line number where exception or error was thrown
+	 *
+	 * @access protected
+	 * @param string $file
+	 * @param string $func
+	 * @param string $line
+	 * @return string
+	 */
+	protected function generate_error_code($file = '', $func = '', $line = '')
+	{
+		$file_bits = explode('.', basename($file));
+		$error_code = ! empty($file_bits[0]) ? $file_bits[0] : '';
+		$error_code .= ! empty($func) ? ' - ' . $func : '';
+		$error_code .= ! empty($line) ? ' - ' . $line : '';
+		return $error_code;
+	}
 
 
-    /**
-     * @return string
-     */
-    private function exceptionStyles()
-    {
-        return '
+	/**
+	 * @return string
+	 */
+	private function exceptionStyles()
+	{
+		return '
 <style media="screen">
 	#ee-error-message {
 		max-width:90% !important;
@@ -392,34 +392,34 @@ 
 		color: #999;
 	}
 </style>';
-    }
+	}
 
 
-    /**
-     * _print_scripts
-     *
-     * @param bool $force_print
-     * @return string
-     */
-    private function printScripts($force_print = false)
-    {
-        if (! $force_print && (did_action('admin_enqueue_scripts') || did_action('wp_enqueue_scripts'))) {
-            //  if script is already enqueued then we can just get out
-            if (wp_script_is('ee_error_js')) {
-                return '';
-            }
-            if (wp_script_is('ee_error_js', 'registered')) {
-                wp_enqueue_style('espresso_default');
-                wp_enqueue_style('espresso_custom_css');
-                wp_enqueue_script('ee_error_js');
-                wp_localize_script('ee_error_js', 'ee_settings', array('wp_debug' => WP_DEBUG));
-                return '';
-            }
-        }
-        $jquery = esc_url_raw(includes_url() . 'js/jquery/jquery.js');
-        $core = esc_url_raw(EE_GLOBAL_ASSETS_URL . 'scripts/espresso_core.js?ver=' . espresso_version());
-        $ee_error = esc_url_raw(EE_GLOBAL_ASSETS_URL . 'scripts/EE_Error.js?ver=' . espresso_version());
-        return '
+	/**
+	 * _print_scripts
+	 *
+	 * @param bool $force_print
+	 * @return string
+	 */
+	private function printScripts($force_print = false)
+	{
+		if (! $force_print && (did_action('admin_enqueue_scripts') || did_action('wp_enqueue_scripts'))) {
+			//  if script is already enqueued then we can just get out
+			if (wp_script_is('ee_error_js')) {
+				return '';
+			}
+			if (wp_script_is('ee_error_js', 'registered')) {
+				wp_enqueue_style('espresso_default');
+				wp_enqueue_style('espresso_custom_css');
+				wp_enqueue_script('ee_error_js');
+				wp_localize_script('ee_error_js', 'ee_settings', array('wp_debug' => WP_DEBUG));
+				return '';
+			}
+		}
+		$jquery = esc_url_raw(includes_url() . 'js/jquery/jquery.js');
+		$core = esc_url_raw(EE_GLOBAL_ASSETS_URL . 'scripts/espresso_core.js?ver=' . espresso_version());
+		$ee_error = esc_url_raw(EE_GLOBAL_ASSETS_URL . 'scripts/EE_Error.js?ver=' . espresso_version());
+		return '
 <script>
 /* <![CDATA[ */
 const ee_settings = {"wp_debug":"' . WP_DEBUG . '"};
@@ -429,5 +429,5 @@ 
 <script src="' . $core . '" type="text/javascript" ></script>
 <script src="' . $ee_error . '" type="text/javascript" ></script>
 ';
-    }
+	}
 }

Spacing +31 added lines, -31 removed lines

@@ -70,12 +70,12 @@ 
         // start gathering output
         $output = '
 <div id="ee-error-message" class="error">
-    ' . $error_message . '
+    ' . $error_message.'
 </div>';
         $styles = $this->exceptionStyles();
         $scripts = $this->printScripts(true);
         if (defined('DOING_AJAX')) {
-            echo wp_json_encode(array('error' => $styles . $output . $scripts));
+            echo wp_json_encode(array('error' => $styles.$output.$scripts));
             exit();
         }
         echo $styles, wp_kses($output, AllowedTags::getWithFormTags()), $scripts;
@@ -86,7 +86,7 @@ 
     {
         return '
     <p>
-        <span class="ee-error-user-msg-spn">' . trim($msg) . '</span> &nbsp; <sup>' . $code . '</sup>
+        <span class="ee-error-user-msg-spn">' . trim($msg).'</span> &nbsp; <sup>'.$code.'</sup>
     </p>';
     }
 
@@ -106,16 +106,16 @@ 
                 '<strong class="ee-error-dev-msg-str">',
                 get_class($exception),
                 '</strong>  &nbsp; <span>',
-                $code . '</span>'
+                $code.'</span>'
             )
             . '<br />
-            <span class="big-text">"' . trim($msg) . '"</span><br/>
+            <span class="big-text">"' . trim($msg).'"</span><br/>
             <a id="display-ee-error-trace-1'
                . $time
                . '" class="display-ee-error-trace-lnk small-text" rel="ee-error-trace-1'
                . $time
                . '">
-                ' . esc_html__('click to view backtrace and class/method details', 'event_espresso') . '
+                ' . esc_html__('click to view backtrace and class/method details', 'event_espresso').'
             </a><br />
             '
             . $exception->getFile()
@@ -132,7 +132,7 @@ 
                . '-dv" class="ee-error-trace-dv" style="display: none;">
             '
                . $trace_details
-               . $this->classDetails() . '
+               . $this->classDetails().'
         </div>
     </div>';
     }
@@ -150,8 +150,8 @@ 
         return '
             <div style="padding:3px; margin:0 0 1em; border:1px solid #999; background:#fff; border-radius:3px;">
                 <div style="padding:1em 2em; border:1px solid #999; background:#fcfcfc;">
-                    <h3>' . esc_html__('Class Details', 'event_espresso') . '</h3>
-                    <pre>' . $a . '</pre>
+                    <h3>' . esc_html__('Class Details', 'event_espresso').'</h3>
+                    <pre>' . $a.'</pre>
                 </div>
             </div>';
     }
@@ -182,7 +182,7 @@ 
                     <th scope="col" class="ee-align-left">
                     ' . esc_html__('Class', 'event_espresso')
                               . '->'
-                              . esc_html__('Method( arguments )', 'event_espresso') . '
+                              . esc_html__('Method( arguments )', 'event_espresso').'
                     </th>
                 </tr>';
         $last_on_stack = count($trace) - 1;
@@ -194,7 +194,7 @@ 
             $type     = isset($trace['type']) ? $trace['type'] : '';
             $function = isset($trace['function']) ? $trace['function'] : '';
             $args     = isset($trace['args']) ? $this->_convert_args_to_string($trace['args']) : '';
-            $args     = isset($trace['args']) && count($trace['args']) > 4 ? ' <br />' . $args . '<br />' : $args;
+            $args     = isset($trace['args']) && count($trace['args']) > 4 ? ' <br />'.$args.'<br />' : $args;
             $line     = isset($trace['line']) ? $trace['line'] : '';
             if (empty($file) && ! empty($this->class_name)) {
                 $a    = new ReflectionClass($this->class_name);
@@ -220,13 +220,13 @@ 
             $file          = ! empty($file) ? $file : '&nbsp;';
             $type          = ! empty($type) ? $type : '';
             $function      = ! empty($function) ? $function : '';
-            $args          = ! empty($args) ? '( ' . $args . ' )' : '()';
+            $args          = ! empty($args) ? '( '.$args.' )' : '()';
             $trace_details .= '
                 <tr>
-                    <td class="ee-align-right">' . $nmbr . '</td>
-                    <td class="ee-align-right">' . $line . '</td>
-                    <td class="ee-align-left">' . $file . '</td>
-                    <td class="ee-align-left">' . $this->class_name . $type . $function . $args . '</td>
+                    <td class="ee-align-right">' . $nmbr.'</td>
+                    <td class="ee-align-right">' . $line.'</td>
+                    <td class="ee-align-left">' . $file.'</td>
+                    <td class="ee-align-left">' . $this->class_name.$type.$function.$args.'</td>
                 </tr>';
         }
         $trace_details .= '
@@ -262,25 +262,25 @@ 
                 $args[] = ' &nbsp;&nbsp; ';
             }
             if (is_string($arg)) {
-                if (! $array && strlen($arg) > 75) {
+                if ( ! $array && strlen($arg) > 75) {
                     $args[] = '<br />';
                     for ($i = 0; $i <= $indent; $i++) {
                         $args[] = ' &nbsp;&nbsp; ';
                     }
-                    $args[] = "'" . $arg . "'<br />";
+                    $args[] = "'".$arg."'<br />";
                 } else {
-                    $args[] = " '" . $arg . "'";
+                    $args[] = " '".$arg."'";
                 }
             } elseif (is_array($arg)) {
                 $arg_count = count($arg);
                 if ($arg_count > 2) {
                     $indent++;
-                    $args[] = ' array(' . $this->_convert_args_to_string($arg, $indent, true) . ')';
+                    $args[] = ' array('.$this->_convert_args_to_string($arg, $indent, true).')';
                     $indent--;
                 } elseif ($arg_count === 0) {
                     $args[] = ' array()';
                 } else {
-                    $args[] = ' array( ' . $this->_convert_args_to_string($arg) . ' )';
+                    $args[] = ' array( '.$this->_convert_args_to_string($arg).' )';
                 }
             } elseif ($arg === null) {
                 $args[] = ' null';
@@ -323,8 +323,8 @@ 
     {
         $file_bits = explode('.', basename($file));
         $error_code = ! empty($file_bits[0]) ? $file_bits[0] : '';
-        $error_code .= ! empty($func) ? ' - ' . $func : '';
-        $error_code .= ! empty($line) ? ' - ' . $line : '';
+        $error_code .= ! empty($func) ? ' - '.$func : '';
+        $error_code .= ! empty($line) ? ' - '.$line : '';
         return $error_code;
     }
 
@@ -403,7 +403,7 @@ 
      */
     private function printScripts($force_print = false)
     {
-        if (! $force_print && (did_action('admin_enqueue_scripts') || did_action('wp_enqueue_scripts'))) {
+        if ( ! $force_print && (did_action('admin_enqueue_scripts') || did_action('wp_enqueue_scripts'))) {
             //  if script is already enqueued then we can just get out
             if (wp_script_is('ee_error_js')) {
                 return '';
@@ -416,18 +416,18 @@ 
                 return '';
             }
         }
-        $jquery = esc_url_raw(includes_url() . 'js/jquery/jquery.js');
-        $core = esc_url_raw(EE_GLOBAL_ASSETS_URL . 'scripts/espresso_core.js?ver=' . espresso_version());
-        $ee_error = esc_url_raw(EE_GLOBAL_ASSETS_URL . 'scripts/EE_Error.js?ver=' . espresso_version());
+        $jquery = esc_url_raw(includes_url().'js/jquery/jquery.js');
+        $core = esc_url_raw(EE_GLOBAL_ASSETS_URL.'scripts/espresso_core.js?ver='.espresso_version());
+        $ee_error = esc_url_raw(EE_GLOBAL_ASSETS_URL.'scripts/EE_Error.js?ver='.espresso_version());
         return '
 <script>
 /* <![CDATA[ */
-const ee_settings = {"wp_debug":"' . WP_DEBUG . '"};
+const ee_settings = {"wp_debug":"' . WP_DEBUG.'"};
 /* ]]> */
 </script>
-<script src="' . $jquery . '" type="text/javascript" ></script>
-<script src="' . $core . '" type="text/javascript" ></script>
-<script src="' . $ee_error . '" type="text/javascript" ></script>
+<script src="' . $jquery.'" type="text/javascript" ></script>
+<script src="' . $core.'" type="text/javascript" ></script>
+<script src="' . $ee_error.'" type="text/javascript" ></script>
 ';
     }
 }

core/EE_Error.core.php

Indentation +1127 added lines, -1127 removed lines

@@ -12,8 +12,8 @@ 
 // if you're a dev and want to receive all errors via email
 // add this to your wp-config.php: define( 'EE_ERROR_EMAILS', TRUE );
 if (defined('WP_DEBUG') && WP_DEBUG === true && defined('EE_ERROR_EMAILS') && EE_ERROR_EMAILS === true) {
-    set_error_handler(array('EE_Error', 'error_handler'));
-    register_shutdown_function(array('EE_Error', 'fatal_error_handler'));
+	set_error_handler(array('EE_Error', 'error_handler'));
+	register_shutdown_function(array('EE_Error', 'fatal_error_handler'));
 }
 
 
@@ -27,251 +27,251 @@ 
 class EE_Error extends Exception
 {
 
-    const OPTIONS_KEY_NOTICES = 'ee_notices';
-
-
-    /**
-     * name of the file to log exceptions to
-     *
-     * @var string
-     */
-    private static $_exception_log_file = 'espresso_error_log.txt';
-
-    /**
-     *    stores details for all exception
-     *
-     * @var array
-     */
-    private static $_all_exceptions = array();
-
-    /**
-     *    tracks number of errors
-     *
-     * @var int
-     */
-    private static $_error_count = 0;
-
-    /**
-     * @var array $_espresso_notices
-     */
-    private static $_espresso_notices = array('success' => false, 'errors' => false, 'attention' => false);
-
-
-    /**
-     * @override default exception handling
-     * @param string         $message
-     * @param int            $code
-     * @param Exception|null $previous
-     */
-    public function __construct($message, $code = 0, Exception $previous = null)
-    {
-        if (version_compare(PHP_VERSION, '5.3.0', '<')) {
-            parent::__construct($message, $code);
-        } else {
-            parent::__construct($message, $code, $previous);
-        }
-    }
-
-
-    /**
-     *    error_handler
-     *
-     * @param $code
-     * @param $message
-     * @param $file
-     * @param $line
-     * @return void
-     */
-    public static function error_handler($code, $message, $file, $line)
-    {
-        $type = EE_Error::error_type($code);
-        $site = site_url();
-        switch ($site) {
-            case 'http://ee4.eventespresso.com/':
-            case 'http://ee4decaf.eventespresso.com/':
-            case 'http://ee4hf.eventespresso.com/':
-            case 'http://ee4a.eventespresso.com/':
-            case 'http://ee4ad.eventespresso.com/':
-            case 'http://ee4b.eventespresso.com/':
-            case 'http://ee4bd.eventespresso.com/':
-            case 'http://ee4d.eventespresso.com/':
-            case 'http://ee4dd.eventespresso.com/':
-                $to = 'developers@eventespresso.com';
-                break;
-            default:
-                $to = get_option('admin_email');
-        }
-        $subject = $type . ' ' . $message . ' in ' . EVENT_ESPRESSO_VERSION . ' on ' . site_url();
-        $msg = EE_Error::_format_error($type, $message, $file, $line);
-        if (function_exists('wp_mail')) {
-            add_filter('wp_mail_content_type', array('EE_Error', 'set_content_type'));
-            wp_mail($to, $subject, $msg);
-        }
-        echo '<div id="message" class="espresso-notices error"><p>';
-        echo wp_kses($type . ': ' . $message . '<br />' . $file . ' line ' . $line, AllowedTags::getWithFormTags());
-        echo '<br /></p></div>';
-    }
-
-
-    /**
-     * error_type
-     * http://www.php.net/manual/en/errorfunc.constants.php#109430
-     *
-     * @param $code
-     * @return string
-     */
-    public static function error_type($code)
-    {
-        switch ($code) {
-            case E_ERROR: // 1 //
-                return 'E_ERROR';
-            case E_WARNING: // 2 //
-                return 'E_WARNING';
-            case E_PARSE: // 4 //
-                return 'E_PARSE';
-            case E_NOTICE: // 8 //
-                return 'E_NOTICE';
-            case E_CORE_ERROR: // 16 //
-                return 'E_CORE_ERROR';
-            case E_CORE_WARNING: // 32 //
-                return 'E_CORE_WARNING';
-            case E_COMPILE_ERROR: // 64 //
-                return 'E_COMPILE_ERROR';
-            case E_COMPILE_WARNING: // 128 //
-                return 'E_COMPILE_WARNING';
-            case E_USER_ERROR: // 256 //
-                return 'E_USER_ERROR';
-            case E_USER_WARNING: // 512 //
-                return 'E_USER_WARNING';
-            case E_USER_NOTICE: // 1024 //
-                return 'E_USER_NOTICE';
-            case E_STRICT: // 2048 //
-                return 'E_STRICT';
-            case E_RECOVERABLE_ERROR: // 4096 //
-                return 'E_RECOVERABLE_ERROR';
-            case E_DEPRECATED: // 8192 //
-                return 'E_DEPRECATED';
-            case E_USER_DEPRECATED: // 16384 //
-                return 'E_USER_DEPRECATED';
-            case E_ALL: // 16384 //
-                return 'E_ALL';
-        }
-        return '';
-    }
-
-
-    /**
-     *    fatal_error_handler
-     *
-     * @return void
-     */
-    public static function fatal_error_handler()
-    {
-        $last_error = error_get_last();
-        if ($last_error['type'] === E_ERROR) {
-            EE_Error::error_handler(E_ERROR, $last_error['message'], $last_error['file'], $last_error['line']);
-        }
-    }
-
-
-    /**
-     * _format_error
-     *
-     * @param $code
-     * @param $message
-     * @param $file
-     * @param $line
-     * @return string
-     */
-    private static function _format_error($code, $message, $file, $line)
-    {
-        $html = "<table cellpadding='5'><thead bgcolor='#f8f8f8'><th>Item</th><th align='left'>Details</th></thead><tbody>";
-        $html .= "<tr valign='top'><td><b>Code</b></td><td>$code</td></tr>";
-        $html .= "<tr valign='top'><td><b>Error</b></td><td>$message</td></tr>";
-        $html .= "<tr valign='top'><td><b>File</b></td><td>$file</td></tr>";
-        $html .= "<tr valign='top'><td><b>Line</b></td><td>$line</td></tr>";
-        $html .= '</tbody></table>';
-        return $html;
-    }
-
-
-    /**
-     * set_content_type
-     *
-     * @param $content_type
-     * @return string
-     */
-    public static function set_content_type($content_type)
-    {
-        return 'text/html';
-    }
-
-
-    /**
-     * @return void
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public function get_error()
-    {
-        if (apply_filters('FHEE__EE_Error__get_error__show_normal_exceptions', false)) {
-            throw $this;
-        }
-        // get separate user and developer messages if they exist
-        $msg = explode('||', $this->getMessage());
-        $user_msg = $msg[0];
-        $dev_msg = isset($msg[1]) ? $msg[1] : $msg[0];
-        $msg = WP_DEBUG ? $dev_msg : $user_msg;
-        // add details to _all_exceptions array
-        $x_time = time();
-        self::$_all_exceptions[ $x_time ]['name'] = get_class($this);
-        self::$_all_exceptions[ $x_time ]['file'] = $this->getFile();
-        self::$_all_exceptions[ $x_time ]['line'] = $this->getLine();
-        self::$_all_exceptions[ $x_time ]['msg'] = $msg;
-        self::$_all_exceptions[ $x_time ]['code'] = $this->getCode();
-        self::$_all_exceptions[ $x_time ]['trace'] = $this->getTrace();
-        self::$_all_exceptions[ $x_time ]['string'] = $this->getTraceAsString();
-        self::$_error_count++;
-        // add_action( 'shutdown', array( $this, 'display_errors' ));
-        $this->display_errors();
-    }
-
-
-    /**
-     * @param bool   $check_stored
-     * @param string $type_to_check
-     * @return bool
-     * @throws \EventEspresso\core\exceptions\InvalidInterfaceException
-     * @throws \InvalidArgumentException
-     * @throws \EventEspresso\core\exceptions\InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    public static function has_error($check_stored = false, $type_to_check = 'errors')
-    {
-        $has_error = isset(self::$_espresso_notices[ $type_to_check ])
-                     && ! empty(self::$_espresso_notices[ $type_to_check ])
-            ? true
-            : false;
-        if ($check_stored && ! $has_error) {
-            $notices = EE_Error::getStoredNotices();
-            foreach ($notices as $type => $notice) {
-                if ($type === $type_to_check && $notice) {
-                    return true;
-                }
-            }
-        }
-        return $has_error;
-    }
-
-
-    /**
-     * @echo string
-     * @throws \ReflectionException
-     */
-    public function display_errors()
-    {
-        $trace_details = '';
-        $output = '
+	const OPTIONS_KEY_NOTICES = 'ee_notices';
+
+
+	/**
+	 * name of the file to log exceptions to
+	 *
+	 * @var string
+	 */
+	private static $_exception_log_file = 'espresso_error_log.txt';
+
+	/**
+	 *    stores details for all exception
+	 *
+	 * @var array
+	 */
+	private static $_all_exceptions = array();
+
+	/**
+	 *    tracks number of errors
+	 *
+	 * @var int
+	 */
+	private static $_error_count = 0;
+
+	/**
+	 * @var array $_espresso_notices
+	 */
+	private static $_espresso_notices = array('success' => false, 'errors' => false, 'attention' => false);
+
+
+	/**
+	 * @override default exception handling
+	 * @param string         $message
+	 * @param int            $code
+	 * @param Exception|null $previous
+	 */
+	public function __construct($message, $code = 0, Exception $previous = null)
+	{
+		if (version_compare(PHP_VERSION, '5.3.0', '<')) {
+			parent::__construct($message, $code);
+		} else {
+			parent::__construct($message, $code, $previous);
+		}
+	}
+
+
+	/**
+	 *    error_handler
+	 *
+	 * @param $code
+	 * @param $message
+	 * @param $file
+	 * @param $line
+	 * @return void
+	 */
+	public static function error_handler($code, $message, $file, $line)
+	{
+		$type = EE_Error::error_type($code);
+		$site = site_url();
+		switch ($site) {
+			case 'http://ee4.eventespresso.com/':
+			case 'http://ee4decaf.eventespresso.com/':
+			case 'http://ee4hf.eventespresso.com/':
+			case 'http://ee4a.eventespresso.com/':
+			case 'http://ee4ad.eventespresso.com/':
+			case 'http://ee4b.eventespresso.com/':
+			case 'http://ee4bd.eventespresso.com/':
+			case 'http://ee4d.eventespresso.com/':
+			case 'http://ee4dd.eventespresso.com/':
+				$to = 'developers@eventespresso.com';
+				break;
+			default:
+				$to = get_option('admin_email');
+		}
+		$subject = $type . ' ' . $message . ' in ' . EVENT_ESPRESSO_VERSION . ' on ' . site_url();
+		$msg = EE_Error::_format_error($type, $message, $file, $line);
+		if (function_exists('wp_mail')) {
+			add_filter('wp_mail_content_type', array('EE_Error', 'set_content_type'));
+			wp_mail($to, $subject, $msg);
+		}
+		echo '<div id="message" class="espresso-notices error"><p>';
+		echo wp_kses($type . ': ' . $message . '<br />' . $file . ' line ' . $line, AllowedTags::getWithFormTags());
+		echo '<br /></p></div>';
+	}
+
+
+	/**
+	 * error_type
+	 * http://www.php.net/manual/en/errorfunc.constants.php#109430
+	 *
+	 * @param $code
+	 * @return string
+	 */
+	public static function error_type($code)
+	{
+		switch ($code) {
+			case E_ERROR: // 1 //
+				return 'E_ERROR';
+			case E_WARNING: // 2 //
+				return 'E_WARNING';
+			case E_PARSE: // 4 //
+				return 'E_PARSE';
+			case E_NOTICE: // 8 //
+				return 'E_NOTICE';
+			case E_CORE_ERROR: // 16 //
+				return 'E_CORE_ERROR';
+			case E_CORE_WARNING: // 32 //
+				return 'E_CORE_WARNING';
+			case E_COMPILE_ERROR: // 64 //
+				return 'E_COMPILE_ERROR';
+			case E_COMPILE_WARNING: // 128 //
+				return 'E_COMPILE_WARNING';
+			case E_USER_ERROR: // 256 //
+				return 'E_USER_ERROR';
+			case E_USER_WARNING: // 512 //
+				return 'E_USER_WARNING';
+			case E_USER_NOTICE: // 1024 //
+				return 'E_USER_NOTICE';
+			case E_STRICT: // 2048 //
+				return 'E_STRICT';
+			case E_RECOVERABLE_ERROR: // 4096 //
+				return 'E_RECOVERABLE_ERROR';
+			case E_DEPRECATED: // 8192 //
+				return 'E_DEPRECATED';
+			case E_USER_DEPRECATED: // 16384 //
+				return 'E_USER_DEPRECATED';
+			case E_ALL: // 16384 //
+				return 'E_ALL';
+		}
+		return '';
+	}
+
+
+	/**
+	 *    fatal_error_handler
+	 *
+	 * @return void
+	 */
+	public static function fatal_error_handler()
+	{
+		$last_error = error_get_last();
+		if ($last_error['type'] === E_ERROR) {
+			EE_Error::error_handler(E_ERROR, $last_error['message'], $last_error['file'], $last_error['line']);
+		}
+	}
+
+
+	/**
+	 * _format_error
+	 *
+	 * @param $code
+	 * @param $message
+	 * @param $file
+	 * @param $line
+	 * @return string
+	 */
+	private static function _format_error($code, $message, $file, $line)
+	{
+		$html = "<table cellpadding='5'><thead bgcolor='#f8f8f8'><th>Item</th><th align='left'>Details</th></thead><tbody>";
+		$html .= "<tr valign='top'><td><b>Code</b></td><td>$code</td></tr>";
+		$html .= "<tr valign='top'><td><b>Error</b></td><td>$message</td></tr>";
+		$html .= "<tr valign='top'><td><b>File</b></td><td>$file</td></tr>";
+		$html .= "<tr valign='top'><td><b>Line</b></td><td>$line</td></tr>";
+		$html .= '</tbody></table>';
+		return $html;
+	}
+
+
+	/**
+	 * set_content_type
+	 *
+	 * @param $content_type
+	 * @return string
+	 */
+	public static function set_content_type($content_type)
+	{
+		return 'text/html';
+	}
+
+
+	/**
+	 * @return void
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public function get_error()
+	{
+		if (apply_filters('FHEE__EE_Error__get_error__show_normal_exceptions', false)) {
+			throw $this;
+		}
+		// get separate user and developer messages if they exist
+		$msg = explode('||', $this->getMessage());
+		$user_msg = $msg[0];
+		$dev_msg = isset($msg[1]) ? $msg[1] : $msg[0];
+		$msg = WP_DEBUG ? $dev_msg : $user_msg;
+		// add details to _all_exceptions array
+		$x_time = time();
+		self::$_all_exceptions[ $x_time ]['name'] = get_class($this);
+		self::$_all_exceptions[ $x_time ]['file'] = $this->getFile();
+		self::$_all_exceptions[ $x_time ]['line'] = $this->getLine();
+		self::$_all_exceptions[ $x_time ]['msg'] = $msg;
+		self::$_all_exceptions[ $x_time ]['code'] = $this->getCode();
+		self::$_all_exceptions[ $x_time ]['trace'] = $this->getTrace();
+		self::$_all_exceptions[ $x_time ]['string'] = $this->getTraceAsString();
+		self::$_error_count++;
+		// add_action( 'shutdown', array( $this, 'display_errors' ));
+		$this->display_errors();
+	}
+
+
+	/**
+	 * @param bool   $check_stored
+	 * @param string $type_to_check
+	 * @return bool
+	 * @throws \EventEspresso\core\exceptions\InvalidInterfaceException
+	 * @throws \InvalidArgumentException
+	 * @throws \EventEspresso\core\exceptions\InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	public static function has_error($check_stored = false, $type_to_check = 'errors')
+	{
+		$has_error = isset(self::$_espresso_notices[ $type_to_check ])
+					 && ! empty(self::$_espresso_notices[ $type_to_check ])
+			? true
+			: false;
+		if ($check_stored && ! $has_error) {
+			$notices = EE_Error::getStoredNotices();
+			foreach ($notices as $type => $notice) {
+				if ($type === $type_to_check && $notice) {
+					return true;
+				}
+			}
+		}
+		return $has_error;
+	}
+
+
+	/**
+	 * @echo string
+	 * @throws \ReflectionException
+	 */
+	public function display_errors()
+	{
+		$trace_details = '';
+		$output = '
 <style type="text/css">
 	#ee-error-message {
 		max-width:90% !important;
@@ -327,21 +327,21 @@ 
 	}
 </style>
 <div id="ee-error-message" class="error">';
-        if (! WP_DEBUG) {
-            $output .= '
+		if (! WP_DEBUG) {
+			$output .= '
 	<p>';
-        }
-        // cycle thru errors
-        foreach (self::$_all_exceptions as $time => $ex) {
-            $error_code = '';
-            // process trace info
-            if (empty($ex['trace'])) {
-                $trace_details .= esc_html__(
-                    'Sorry, but no trace information was available for this exception.',
-                    'event_espresso'
-                );
-            } else {
-                $trace_details .= '
+		}
+		// cycle thru errors
+		foreach (self::$_all_exceptions as $time => $ex) {
+			$error_code = '';
+			// process trace info
+			if (empty($ex['trace'])) {
+				$trace_details .= esc_html__(
+					'Sorry, but no trace information was available for this exception.',
+					'event_espresso'
+				);
+			} else {
+				$trace_details .= '
 			<div id="ee-trace-details">
 			<table width="100%" border="0" cellpadding="5" cellspacing="0">
 				<tr>
@@ -351,43 +351,43 @@ 
 					<th scope="col" align="left">Class</th>
 					<th scope="col" align="left">Method( arguments )</th>
 				</tr>';
-                $last_on_stack = count($ex['trace']) - 1;
-                // reverse array so that stack is in proper chronological order
-                $sorted_trace = array_reverse($ex['trace']);
-                foreach ($sorted_trace as $nmbr => $trace) {
-                    $file = isset($trace['file']) ? $trace['file'] : '';
-                    $class = isset($trace['class']) ? $trace['class'] : '';
-                    $type = isset($trace['type']) ? $trace['type'] : '';
-                    $function = isset($trace['function']) ? $trace['function'] : '';
-                    $args = isset($trace['args']) ? $this->_convert_args_to_string($trace['args']) : '';
-                    $line = isset($trace['line']) ? $trace['line'] : '';
-                    $zebra = ($nmbr % 2) ? ' odd' : '';
-                    if (empty($file) && ! empty($class)) {
-                        $a = new ReflectionClass($class);
-                        $file = $a->getFileName();
-                        if (empty($line) && ! empty($function)) {
-                            try {
-                                // if $function is a closure, this throws an exception
-                                $b = new ReflectionMethod($class, $function);
-                                $line = $b->getStartLine();
-                            } catch (Exception $closure_exception) {
-                                $line = 'unknown';
-                            }
-                        }
-                    }
-                    if ($nmbr === $last_on_stack) {
-                        $file = $ex['file'] !== '' ? $ex['file'] : $file;
-                        $line = $ex['line'] !== '' ? $ex['line'] : $line;
-                        $error_code = self::generate_error_code($file, $trace['function'], $line);
-                    }
-                    $nmbr_dsply = ! empty($nmbr) ? $nmbr : '&nbsp;';
-                    $line_dsply = ! empty($line) ? $line : '&nbsp;';
-                    $file_dsply = ! empty($file) ? $file : '&nbsp;';
-                    $class_dsply = ! empty($class) ? $class : '&nbsp;';
-                    $type_dsply = ! empty($type) ? $type : '&nbsp;';
-                    $function_dsply = ! empty($function) ? $function : '&nbsp;';
-                    $args_dsply = ! empty($args) ? '( ' . $args . ' )' : '';
-                    $trace_details .= '
+				$last_on_stack = count($ex['trace']) - 1;
+				// reverse array so that stack is in proper chronological order
+				$sorted_trace = array_reverse($ex['trace']);
+				foreach ($sorted_trace as $nmbr => $trace) {
+					$file = isset($trace['file']) ? $trace['file'] : '';
+					$class = isset($trace['class']) ? $trace['class'] : '';
+					$type = isset($trace['type']) ? $trace['type'] : '';
+					$function = isset($trace['function']) ? $trace['function'] : '';
+					$args = isset($trace['args']) ? $this->_convert_args_to_string($trace['args']) : '';
+					$line = isset($trace['line']) ? $trace['line'] : '';
+					$zebra = ($nmbr % 2) ? ' odd' : '';
+					if (empty($file) && ! empty($class)) {
+						$a = new ReflectionClass($class);
+						$file = $a->getFileName();
+						if (empty($line) && ! empty($function)) {
+							try {
+								// if $function is a closure, this throws an exception
+								$b = new ReflectionMethod($class, $function);
+								$line = $b->getStartLine();
+							} catch (Exception $closure_exception) {
+								$line = 'unknown';
+							}
+						}
+					}
+					if ($nmbr === $last_on_stack) {
+						$file = $ex['file'] !== '' ? $ex['file'] : $file;
+						$line = $ex['line'] !== '' ? $ex['line'] : $line;
+						$error_code = self::generate_error_code($file, $trace['function'], $line);
+					}
+					$nmbr_dsply = ! empty($nmbr) ? $nmbr : '&nbsp;';
+					$line_dsply = ! empty($line) ? $line : '&nbsp;';
+					$file_dsply = ! empty($file) ? $file : '&nbsp;';
+					$class_dsply = ! empty($class) ? $class : '&nbsp;';
+					$type_dsply = ! empty($type) ? $type : '&nbsp;';
+					$function_dsply = ! empty($function) ? $function : '&nbsp;';
+					$args_dsply = ! empty($args) ? '( ' . $args . ' )' : '';
+					$trace_details .= '
 					<tr>
 						<td align="right" class="' . $zebra . '">' . $nmbr_dsply . '</td>
 						<td align="right" class="' . $zebra . '">' . $line_dsply . '</td>
@@ -395,628 +395,628 @@ 
 						<td align="left" class="' . $zebra . '">' . $class_dsply . '</td>
 						<td align="left" class="' . $zebra . '">' . $type_dsply . $function_dsply . $args_dsply . '</td>
 					</tr>';
-                }
-                $trace_details .= '
+				}
+				$trace_details .= '
 			 </table>
 			</div>';
-            }
-            $ex['code'] = $ex['code'] ? $ex['code'] : $error_code;
-            // add generic non-identifying messages for non-privileged users
-            if (! WP_DEBUG) {
-                $output .= '<span class="ee-error-user-msg-spn">'
-                           . trim($ex['msg'])
-                           . '</span> &nbsp; <sup>'
-                           . $ex['code']
-                           . '</sup><br />';
-            } else {
-                // or helpful developer messages if debugging is on
-                $output .= '
+			}
+			$ex['code'] = $ex['code'] ? $ex['code'] : $error_code;
+			// add generic non-identifying messages for non-privileged users
+			if (! WP_DEBUG) {
+				$output .= '<span class="ee-error-user-msg-spn">'
+						   . trim($ex['msg'])
+						   . '</span> &nbsp; <sup>'
+						   . $ex['code']
+						   . '</sup><br />';
+			} else {
+				// or helpful developer messages if debugging is on
+				$output .= '
 		<div class="ee-error-dev-msg-dv">
 			<p class="ee-error-dev-msg-pg">
 				<strong class="ee-error-dev-msg-str">An '
-                           . $ex['name']
-                           . ' exception was thrown!</strong>  &nbsp; <span>code: '
-                           . $ex['code']
-                           . '</span><br />
+						   . $ex['name']
+						   . ' exception was thrown!</strong>  &nbsp; <span>code: '
+						   . $ex['code']
+						   . '</span><br />
 				<span class="big-text">"'
-                           . trim($ex['msg'])
-                           . '"</span><br/>
+						   . trim($ex['msg'])
+						   . '"</span><br/>
 				<a id="display-ee-error-trace-'
-                           . self::$_error_count
-                           . $time
-                           . '" class="display-ee-error-trace-lnk small-text" rel="ee-error-trace-'
-                           . self::$_error_count
-                           . $time
-                           . '">
+						   . self::$_error_count
+						   . $time
+						   . '" class="display-ee-error-trace-lnk small-text" rel="ee-error-trace-'
+						   . self::$_error_count
+						   . $time
+						   . '">
 					'
-                           . esc_html__('click to view backtrace and class/method details', 'event_espresso')
-                           . '
+						   . esc_html__('click to view backtrace and class/method details', 'event_espresso')
+						   . '
 				</a><br />
 				<span class="small-text lt-grey-text">'
-                           . $ex['file']
-                           . ' &nbsp; ( line no: '
-                           . $ex['line']
-                           . ' )</span>
+						   . $ex['file']
+						   . ' &nbsp; ( line no: '
+						   . $ex['line']
+						   . ' )</span>
 			</p>
 			<div id="ee-error-trace-'
-                           . self::$_error_count
-                           . $time
-                           . '-dv" class="ee-error-trace-dv" style="display: none;">
+						   . self::$_error_count
+						   . $time
+						   . '-dv" class="ee-error-trace-dv" style="display: none;">
 				'
-                           . $trace_details;
-                if (! empty($class)) {
-                    $output .= '
+						   . $trace_details;
+				if (! empty($class)) {
+					$output .= '
 				<div style="padding:3px; margin:0 0 1em; border:1px solid #666; background:#fff; border-radius:3px;">
 					<div style="padding:1em 2em; border:1px solid #666; background:#f9f9f9;">
 						<h3>Class Details</h3>';
-                    $a = new ReflectionClass($class);
-                    $output .= '
+					$a = new ReflectionClass($class);
+					$output .= '
 						<pre>' . $a . '</pre>
 					</div>
 				</div>';
-                }
-                $output .= '
+				}
+				$output .= '
 			</div>
 		</div>
 		<br />';
-            }
-            $this->write_to_error_log($time, $ex);
-        }
-        // remove last linebreak
-        $output = substr($output, 0, -6);
-        if (! WP_DEBUG) {
-            $output .= '
+			}
+			$this->write_to_error_log($time, $ex);
+		}
+		// remove last linebreak
+		$output = substr($output, 0, -6);
+		if (! WP_DEBUG) {
+			$output .= '
 	</p>';
-        }
-        $output .= '
+		}
+		$output .= '
 </div>';
-        $output .= self::_print_scripts(true);
-        if (defined('DOING_AJAX')) {
-            echo wp_json_encode(array('error' => $output));
-            exit();
-        }
-        echo $output;
-        die();
-    }
-
-
-    /**
-     *    generate string from exception trace args
-     *
-     * @param array $arguments
-     * @param bool  $array
-     * @return string
-     */
-    private function _convert_args_to_string($arguments = array(), $array = false)
-    {
-        $arg_string = '';
-        if (! empty($arguments)) {
-            $args = array();
-            foreach ($arguments as $arg) {
-                if (! empty($arg)) {
-                    if (is_string($arg)) {
-                        $args[] = " '" . $arg . "'";
-                    } elseif (is_array($arg)) {
-                        $args[] = 'ARRAY(' . $this->_convert_args_to_string($arg, true);
-                    } elseif ($arg === null) {
-                        $args[] = ' NULL';
-                    } elseif (is_bool($arg)) {
-                        $args[] = ($arg) ? ' TRUE' : ' FALSE';
-                    } elseif (is_object($arg)) {
-                        $args[] = ' OBJECT ' . get_class($arg);
-                    } elseif (is_resource($arg)) {
-                        $args[] = get_resource_type($arg);
-                    } else {
-                        $args[] = $arg;
-                    }
-                }
-            }
-            $arg_string = implode(', ', $args);
-        }
-        if ($array) {
-            $arg_string .= ' )';
-        }
-        return $arg_string;
-    }
-
-
-    /**
-     *    add error message
-     *
-     * @param        string $msg  the message to display to users or developers - adding a double pipe || (OR) creates
-     *                            separate messages for user || dev
-     * @param        string $file the file that the error occurred in - just use __FILE__
-     * @param        string $func the function/method that the error occurred in - just use __FUNCTION__
-     * @param        string $line the line number where the error occurred - just use __LINE__
-     * @return        void
-     */
-    public static function add_error($msg = null, $file = null, $func = null, $line = null)
-    {
-        self::_add_notice('errors', $msg, $file, $func, $line);
-        self::$_error_count++;
-    }
-
-
-    /**
-     * If WP_DEBUG is active, throws an exception. If WP_DEBUG is off, just
-     * adds an error
-     *
-     * @param string $msg
-     * @param string $file
-     * @param string $func
-     * @param string $line
-     * @throws EE_Error
-     */
-    public static function throw_exception_if_debugging($msg = null, $file = null, $func = null, $line = null)
-    {
-        if (WP_DEBUG) {
-            throw new EE_Error($msg);
-        }
-        EE_Error::add_error($msg, $file, $func, $line);
-    }
-
-
-    /**
-     *    add success message
-     *
-     * @param        string $msg  the message to display to users or developers - adding a double pipe || (OR) creates
-     *                            separate messages for user || dev
-     * @param        string $file the file that the error occurred in - just use __FILE__
-     * @param        string $func the function/method that the error occurred in - just use __FUNCTION__
-     * @param        string $line the line number where the error occurred - just use __LINE__
-     * @return        void
-     */
-    public static function add_success($msg = null, $file = null, $func = null, $line = null)
-    {
-        self::_add_notice('success', $msg, $file, $func, $line);
-    }
-
-
-    /**
-     *    add attention message
-     *
-     * @param        string $msg  the message to display to users or developers - adding a double pipe || (OR) creates
-     *                            separate messages for user || dev
-     * @param        string $file the file that the error occurred in - just use __FILE__
-     * @param        string $func the function/method that the error occurred in - just use __FUNCTION__
-     * @param        string $line the line number where the error occurred - just use __LINE__
-     * @return        void
-     */
-    public static function add_attention($msg = null, $file = null, $func = null, $line = null)
-    {
-        self::_add_notice('attention', $msg, $file, $func, $line);
-    }
-
-
-    /**
-     * @param string $type whether the message is for a success or error notification
-     * @param string $msg  the message to display to users or developers
-     *                     - adding a double pipe || (OR) creates separate messages for user || dev
-     * @param string $file the file that the error occurred in - just use __FILE__
-     * @param string $func the function/method that the error occurred in - just use __FUNCTION__
-     * @param string $line the line number where the error occurred - just use __LINE__
-     * @return void
-     */
-    private static function _add_notice($type = 'success', $msg = '', $file = '', $func = '', $line = '')
-    {
-        if (empty($msg)) {
-            EE_Error::doing_it_wrong(
-                'EE_Error::add_' . $type . '()',
-                sprintf(
-                    esc_html__(
-                        'Notifications are not much use without a message! Please add a message to the EE_Error::add_%s() call made in %s on line %d',
-                        'event_espresso'
-                    ),
-                    $type,
-                    $file,
-                    $line
-                ),
-                EVENT_ESPRESSO_VERSION
-            );
-        }
-        if ($type === 'errors' && (empty($file) || empty($func) || empty($line))) {
-            EE_Error::doing_it_wrong(
-                'EE_Error::add_error()',
-                esc_html__(
-                    'You need to provide the file name, function name, and line number that the error occurred on in order to better assist with debugging.',
-                    'event_espresso'
-                ),
-                EVENT_ESPRESSO_VERSION
-            );
-        }
-        // get separate user and developer messages if they exist
-        $msg = explode('||', $msg);
-        $user_msg = $msg[0];
-        $dev_msg = isset($msg[1]) ? $msg[1] : $msg[0];
-        /**
-         * Do an action so other code can be triggered when a notice is created
-         *
-         * @param string $type     can be 'errors', 'attention', or 'success'
-         * @param string $user_msg message displayed to user when WP_DEBUG is off
-         * @param string $user_msg message displayed to user when WP_DEBUG is on
-         * @param string $file     file where error was generated
-         * @param string $func     function where error was generated
-         * @param string $line     line where error was generated
-         */
-        do_action('AHEE__EE_Error___add_notice', $type, $user_msg, $dev_msg, $file, $func, $line);
-        $msg = WP_DEBUG ? $dev_msg : $user_msg;
-        // add notice if message exists
-        if (! empty($msg)) {
-            // get error code
-            $notice_code = EE_Error::generate_error_code($file, $func, $line);
-            if (WP_DEBUG && $type === 'errors') {
-                $msg .= '<br/><span class="tiny-text">' . $notice_code . '</span>';
-            }
-            // add notice. Index by code if it's not blank
-            if ($notice_code) {
-                self::$_espresso_notices[ $type ][ $notice_code ] = $msg;
-            } else {
-                self::$_espresso_notices[ $type ][] = $msg;
-            }
-            add_action('wp_footer', array('EE_Error', 'enqueue_error_scripts'), 1);
-        }
-    }
-
-
-    /**
-     * in some case it may be necessary to overwrite the existing success messages
-     *
-     * @return        void
-     */
-    public static function overwrite_success()
-    {
-        self::$_espresso_notices['success'] = false;
-    }
-
-
-    /**
-     * in some case it may be necessary to overwrite the existing attention messages
-     *
-     * @return void
-     */
-    public static function overwrite_attention()
-    {
-        self::$_espresso_notices['attention'] = false;
-    }
-
-
-    /**
-     * in some case it may be necessary to overwrite the existing error messages
-     *
-     * @return void
-     */
-    public static function overwrite_errors()
-    {
-        self::$_espresso_notices['errors'] = false;
-    }
-
-
-    /**
-     * @return void
-     */
-    public static function reset_notices()
-    {
-        self::$_espresso_notices['success'] = false;
-        self::$_espresso_notices['attention'] = false;
-        self::$_espresso_notices['errors'] = false;
-    }
-
-
-    /**
-     * @return int
-     */
-    public static function has_notices()
-    {
-        $has_notices = 0;
-        // check for success messages
-        $has_notices = self::$_espresso_notices['success'] && ! empty(self::$_espresso_notices['success'])
-            ? 3
-            : $has_notices;
-        // check for attention messages
-        $has_notices = self::$_espresso_notices['attention'] && ! empty(self::$_espresso_notices['attention'])
-            ? 2
-            : $has_notices;
-        // check for error messages
-        $has_notices = self::$_espresso_notices['errors'] && ! empty(self::$_espresso_notices['errors'])
-            ? 1
-            : $has_notices;
-        return $has_notices;
-    }
-
-
-    /**
-     * This simply returns non formatted error notices as they were sent into the EE_Error object.
-     *
-     * @since 4.9.0
-     * @return array
-     */
-    public static function get_vanilla_notices()
-    {
-        return array(
-            'success'   => isset(self::$_espresso_notices['success'])
-                ? self::$_espresso_notices['success']
-                : array(),
-            'attention' => isset(self::$_espresso_notices['attention'])
-                ? self::$_espresso_notices['attention']
-                : array(),
-            'errors'    => isset(self::$_espresso_notices['errors'])
-                ? self::$_espresso_notices['errors']
-                : array(),
-        );
-    }
-
-
-    /**
-     * @return array
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    public static function getStoredNotices()
-    {
-        if ($user_id = get_current_user_id()) {
-            // get notices for logged in user
-            $notices = get_user_option(EE_Error::OPTIONS_KEY_NOTICES, $user_id);
-            return is_array($notices) ? $notices : array();
-        }
-        if (EE_Session::isLoadedAndActive()) {
-            // get notices for user currently engaged in a session
-            $session_data = EE_Session::instance()->get_session_data(EE_Error::OPTIONS_KEY_NOTICES);
-            return is_array($session_data) ? $session_data : array();
-        }
-        // get global notices and hope they apply to the current site visitor
-        $notices = get_option(EE_Error::OPTIONS_KEY_NOTICES, array());
-        return is_array($notices) ? $notices : array();
-    }
-
-
-    /**
-     * @param array $notices
-     * @return bool
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    public static function storeNotices(array $notices)
-    {
-        if ($user_id = get_current_user_id()) {
-            // store notices for logged in user
-            return (bool) update_user_option(
-                $user_id,
-                EE_Error::OPTIONS_KEY_NOTICES,
-                $notices
-            );
-        }
-        if (EE_Session::isLoadedAndActive()) {
-            // store notices for user currently engaged in a session
-            return EE_Session::instance()->set_session_data(
-                array(EE_Error::OPTIONS_KEY_NOTICES => $notices)
-            );
-        }
-        // store global notices and hope they apply to the same site visitor on the next request
-        return update_option(EE_Error::OPTIONS_KEY_NOTICES, $notices);
-    }
-
-
-    /**
-     * @return bool|TRUE
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    public static function clearNotices()
-    {
-        if ($user_id = get_current_user_id()) {
-            // clear notices for logged in user
-            return (bool) update_user_option(
-                $user_id,
-                EE_Error::OPTIONS_KEY_NOTICES,
-                array()
-            );
-        }
-        if (EE_Session::isLoadedAndActive()) {
-            // clear notices for user currently engaged in a session
-            return EE_Session::instance()->reset_data(EE_Error::OPTIONS_KEY_NOTICES);
-        }
-        // clear global notices and hope none belonged to some for some other site visitor
-        return update_option(EE_Error::OPTIONS_KEY_NOTICES, array());
-    }
-
-
-    /**
-     * saves notices to the db for retrieval on next request
-     *
-     * @return void
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    public static function stashNoticesBeforeRedirect()
-    {
-        EE_Error::get_notices(false, true);
-    }
-
-
-    /**
-     * compile all error or success messages into one string
-     *
-     * @see EE_Error::get_raw_notices if you want the raw notices without any preparations made to them
-     * @param boolean $format_output            whether or not to format the messages for display in the WP admin
-     * @param boolean $save_to_transient        whether or not to save notices to the db for retrieval on next request
-     *                                          - ONLY do this just before redirecting
-     * @param boolean $remove_empty             whether or not to unset empty messages
-     * @return array
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    public static function get_notices($format_output = true, $save_to_transient = false, $remove_empty = true)
-    {
-        $success_messages = '';
-        $attention_messages = '';
-        $error_messages = '';
-        /** @var RequestInterface $request */
-        $request = LoaderFactory::getLoader()->getShared(RequestInterface::class);
-        // either save notices to the db
-        if ($save_to_transient || $request->requestParamIsSet('activate-selected')) {
-            self::$_espresso_notices = array_merge(
-                EE_Error::getStoredNotices(),
-                self::$_espresso_notices
-            );
-            EE_Error::storeNotices(self::$_espresso_notices);
-            return array();
-        }
-        $print_scripts = EE_Error::combineExistingAndNewNotices();
-        // check for success messages
-        if (self::$_espresso_notices['success'] && ! empty(self::$_espresso_notices['success'])) {
-            // combine messages
-            $success_messages .= implode('<br />', self::$_espresso_notices['success']);
-            $print_scripts = true;
-        }
-        // check for attention messages
-        if (self::$_espresso_notices['attention'] && ! empty(self::$_espresso_notices['attention'])) {
-            // combine messages
-            $attention_messages .= implode('<br />', self::$_espresso_notices['attention']);
-            $print_scripts = true;
-        }
-        // check for error messages
-        if (self::$_espresso_notices['errors'] && ! empty(self::$_espresso_notices['errors'])) {
-            $error_messages .= count(self::$_espresso_notices['errors']) > 1
-                ? esc_html__('The following errors have occurred:', 'event_espresso')
-                : esc_html__('An error has occurred:', 'event_espresso');
-            // combine messages
-            $error_messages .= '<br />' . implode('<br />', self::$_espresso_notices['errors']);
-            $print_scripts = true;
-        }
-        if ($format_output) {
-            $notices = EE_Error::formatNoticesOutput(
-                $success_messages,
-                $attention_messages,
-                $error_messages
-            );
-        } else {
-            $notices = array(
-                'success'   => $success_messages,
-                'attention' => $attention_messages,
-                'errors'    => $error_messages,
-            );
-            if ($remove_empty) {
-                // remove empty notices
-                foreach ($notices as $type => $notice) {
-                    if (empty($notice)) {
-                        unset($notices[ $type ]);
-                    }
-                }
-            }
-        }
-        if ($print_scripts) {
-            self::_print_scripts();
-        }
-        return $notices;
-    }
-
-
-    /**
-     * @return bool
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    private static function combineExistingAndNewNotices()
-    {
-        $print_scripts = false;
-        // grab any notices that have been previously saved
-        $notices = EE_Error::getStoredNotices();
-        if (! empty($notices)) {
-            foreach ($notices as $type => $notice) {
-                if (is_array($notice) && ! empty($notice)) {
-                    // make sure that existing notice type is an array
-                    self::$_espresso_notices[ $type ] = is_array(self::$_espresso_notices[ $type ])
-                                                        && ! empty(self::$_espresso_notices[ $type ])
-                        ? self::$_espresso_notices[ $type ]
-                        : array();
-                    // add newly created notices to existing ones
-                    self::$_espresso_notices[ $type ] += $notice;
-                    $print_scripts = true;
-                }
-            }
-            // now clear any stored notices
-            EE_Error::clearNotices();
-        }
-        return $print_scripts;
-    }
-
-
-    /**
-     * @param string $success_messages
-     * @param string $attention_messages
-     * @param string $error_messages
-     * @return string
-     */
-    private static function formatNoticesOutput($success_messages, $attention_messages, $error_messages)
-    {
-        $notices = '<div id="espresso-notices">';
-        $close = is_admin()
-            ? ''
-            : '<a class="close-espresso-notice hide-if-no-js"><span class="dashicons dashicons-no"/></a>';
-        if ($success_messages !== '') {
-            $css_id = is_admin() ? 'ee-success-message' : 'espresso-notices-success';
-            $css_class = is_admin() ? 'updated fade' : 'success fade-away';
-            // showMessage( $success_messages );
-            $notices .= '<div id="' . $css_id . '" '
-                        . 'class="espresso-notices ' . $css_class . '" '
-                        . 'style="display:none;">'
-                        . '<p>' . $success_messages . '</p>'
-                        . $close
-                        . '</div>';
-        }
-        if ($attention_messages !== '') {
-            $css_id = is_admin() ? 'ee-attention-message' : 'espresso-notices-attention';
-            $css_class = is_admin() ? 'updated ee-notices-attention' : 'attention fade-away';
-            // showMessage( $error_messages, TRUE );
-            $notices .= '<div id="' . $css_id . '" '
-                        . 'class="espresso-notices ' . $css_class . '" '
-                        . 'style="display:none;">'
-                        . '<p>' . $attention_messages . '</p>'
-                        . $close
-                        . '</div>';
-        }
-        if ($error_messages !== '') {
-            $css_id = is_admin() ? 'ee-error-message' : 'espresso-notices-error';
-            $css_class = is_admin() ? 'error' : 'error fade-away';
-            // showMessage( $error_messages, TRUE );
-            $notices .= '<div id="' . $css_id . '" '
-                        . 'class="espresso-notices ' . $css_class . '" '
-                        . 'style="display:none;">'
-                        . '<p>' . $error_messages . '</p>'
-                        . $close
-                        . '</div>';
-        }
-        $notices .= '</div>';
-        return $notices;
-    }
-
-
-    /**
-     * _print_scripts
-     *
-     * @param    bool $force_print
-     * @return    string
-     */
-    private static function _print_scripts($force_print = false)
-    {
-        if (! $force_print && (did_action('admin_enqueue_scripts') || did_action('wp_enqueue_scripts'))) {
-            if (wp_script_is('ee_error_js', 'registered')) {
-                wp_enqueue_style('espresso_default');
-                wp_enqueue_style('espresso_custom_css');
-                wp_enqueue_script('ee_error_js');
-            }
-            if (wp_script_is('ee_error_js', 'enqueued')) {
-                wp_localize_script('ee_error_js', 'ee_settings', array('wp_debug' => WP_DEBUG));
-                return '';
-            }
-        } else {
-            return '
+		$output .= self::_print_scripts(true);
+		if (defined('DOING_AJAX')) {
+			echo wp_json_encode(array('error' => $output));
+			exit();
+		}
+		echo $output;
+		die();
+	}
+
+
+	/**
+	 *    generate string from exception trace args
+	 *
+	 * @param array $arguments
+	 * @param bool  $array
+	 * @return string
+	 */
+	private function _convert_args_to_string($arguments = array(), $array = false)
+	{
+		$arg_string = '';
+		if (! empty($arguments)) {
+			$args = array();
+			foreach ($arguments as $arg) {
+				if (! empty($arg)) {
+					if (is_string($arg)) {
+						$args[] = " '" . $arg . "'";
+					} elseif (is_array($arg)) {
+						$args[] = 'ARRAY(' . $this->_convert_args_to_string($arg, true);
+					} elseif ($arg === null) {
+						$args[] = ' NULL';
+					} elseif (is_bool($arg)) {
+						$args[] = ($arg) ? ' TRUE' : ' FALSE';
+					} elseif (is_object($arg)) {
+						$args[] = ' OBJECT ' . get_class($arg);
+					} elseif (is_resource($arg)) {
+						$args[] = get_resource_type($arg);
+					} else {
+						$args[] = $arg;
+					}
+				}
+			}
+			$arg_string = implode(', ', $args);
+		}
+		if ($array) {
+			$arg_string .= ' )';
+		}
+		return $arg_string;
+	}
+
+
+	/**
+	 *    add error message
+	 *
+	 * @param        string $msg  the message to display to users or developers - adding a double pipe || (OR) creates
+	 *                            separate messages for user || dev
+	 * @param        string $file the file that the error occurred in - just use __FILE__
+	 * @param        string $func the function/method that the error occurred in - just use __FUNCTION__
+	 * @param        string $line the line number where the error occurred - just use __LINE__
+	 * @return        void
+	 */
+	public static function add_error($msg = null, $file = null, $func = null, $line = null)
+	{
+		self::_add_notice('errors', $msg, $file, $func, $line);
+		self::$_error_count++;
+	}
+
+
+	/**
+	 * If WP_DEBUG is active, throws an exception. If WP_DEBUG is off, just
+	 * adds an error
+	 *
+	 * @param string $msg
+	 * @param string $file
+	 * @param string $func
+	 * @param string $line
+	 * @throws EE_Error
+	 */
+	public static function throw_exception_if_debugging($msg = null, $file = null, $func = null, $line = null)
+	{
+		if (WP_DEBUG) {
+			throw new EE_Error($msg);
+		}
+		EE_Error::add_error($msg, $file, $func, $line);
+	}
+
+
+	/**
+	 *    add success message
+	 *
+	 * @param        string $msg  the message to display to users or developers - adding a double pipe || (OR) creates
+	 *                            separate messages for user || dev
+	 * @param        string $file the file that the error occurred in - just use __FILE__
+	 * @param        string $func the function/method that the error occurred in - just use __FUNCTION__
+	 * @param        string $line the line number where the error occurred - just use __LINE__
+	 * @return        void
+	 */
+	public static function add_success($msg = null, $file = null, $func = null, $line = null)
+	{
+		self::_add_notice('success', $msg, $file, $func, $line);
+	}
+
+
+	/**
+	 *    add attention message
+	 *
+	 * @param        string $msg  the message to display to users or developers - adding a double pipe || (OR) creates
+	 *                            separate messages for user || dev
+	 * @param        string $file the file that the error occurred in - just use __FILE__
+	 * @param        string $func the function/method that the error occurred in - just use __FUNCTION__
+	 * @param        string $line the line number where the error occurred - just use __LINE__
+	 * @return        void
+	 */
+	public static function add_attention($msg = null, $file = null, $func = null, $line = null)
+	{
+		self::_add_notice('attention', $msg, $file, $func, $line);
+	}
+
+
+	/**
+	 * @param string $type whether the message is for a success or error notification
+	 * @param string $msg  the message to display to users or developers
+	 *                     - adding a double pipe || (OR) creates separate messages for user || dev
+	 * @param string $file the file that the error occurred in - just use __FILE__
+	 * @param string $func the function/method that the error occurred in - just use __FUNCTION__
+	 * @param string $line the line number where the error occurred - just use __LINE__
+	 * @return void
+	 */
+	private static function _add_notice($type = 'success', $msg = '', $file = '', $func = '', $line = '')
+	{
+		if (empty($msg)) {
+			EE_Error::doing_it_wrong(
+				'EE_Error::add_' . $type . '()',
+				sprintf(
+					esc_html__(
+						'Notifications are not much use without a message! Please add a message to the EE_Error::add_%s() call made in %s on line %d',
+						'event_espresso'
+					),
+					$type,
+					$file,
+					$line
+				),
+				EVENT_ESPRESSO_VERSION
+			);
+		}
+		if ($type === 'errors' && (empty($file) || empty($func) || empty($line))) {
+			EE_Error::doing_it_wrong(
+				'EE_Error::add_error()',
+				esc_html__(
+					'You need to provide the file name, function name, and line number that the error occurred on in order to better assist with debugging.',
+					'event_espresso'
+				),
+				EVENT_ESPRESSO_VERSION
+			);
+		}
+		// get separate user and developer messages if they exist
+		$msg = explode('||', $msg);
+		$user_msg = $msg[0];
+		$dev_msg = isset($msg[1]) ? $msg[1] : $msg[0];
+		/**
+		 * Do an action so other code can be triggered when a notice is created
+		 *
+		 * @param string $type     can be 'errors', 'attention', or 'success'
+		 * @param string $user_msg message displayed to user when WP_DEBUG is off
+		 * @param string $user_msg message displayed to user when WP_DEBUG is on
+		 * @param string $file     file where error was generated
+		 * @param string $func     function where error was generated
+		 * @param string $line     line where error was generated
+		 */
+		do_action('AHEE__EE_Error___add_notice', $type, $user_msg, $dev_msg, $file, $func, $line);
+		$msg = WP_DEBUG ? $dev_msg : $user_msg;
+		// add notice if message exists
+		if (! empty($msg)) {
+			// get error code
+			$notice_code = EE_Error::generate_error_code($file, $func, $line);
+			if (WP_DEBUG && $type === 'errors') {
+				$msg .= '<br/><span class="tiny-text">' . $notice_code . '</span>';
+			}
+			// add notice. Index by code if it's not blank
+			if ($notice_code) {
+				self::$_espresso_notices[ $type ][ $notice_code ] = $msg;
+			} else {
+				self::$_espresso_notices[ $type ][] = $msg;
+			}
+			add_action('wp_footer', array('EE_Error', 'enqueue_error_scripts'), 1);
+		}
+	}
+
+
+	/**
+	 * in some case it may be necessary to overwrite the existing success messages
+	 *
+	 * @return        void
+	 */
+	public static function overwrite_success()
+	{
+		self::$_espresso_notices['success'] = false;
+	}
+
+
+	/**
+	 * in some case it may be necessary to overwrite the existing attention messages
+	 *
+	 * @return void
+	 */
+	public static function overwrite_attention()
+	{
+		self::$_espresso_notices['attention'] = false;
+	}
+
+
+	/**
+	 * in some case it may be necessary to overwrite the existing error messages
+	 *
+	 * @return void
+	 */
+	public static function overwrite_errors()
+	{
+		self::$_espresso_notices['errors'] = false;
+	}
+
+
+	/**
+	 * @return void
+	 */
+	public static function reset_notices()
+	{
+		self::$_espresso_notices['success'] = false;
+		self::$_espresso_notices['attention'] = false;
+		self::$_espresso_notices['errors'] = false;
+	}
+
+
+	/**
+	 * @return int
+	 */
+	public static function has_notices()
+	{
+		$has_notices = 0;
+		// check for success messages
+		$has_notices = self::$_espresso_notices['success'] && ! empty(self::$_espresso_notices['success'])
+			? 3
+			: $has_notices;
+		// check for attention messages
+		$has_notices = self::$_espresso_notices['attention'] && ! empty(self::$_espresso_notices['attention'])
+			? 2
+			: $has_notices;
+		// check for error messages
+		$has_notices = self::$_espresso_notices['errors'] && ! empty(self::$_espresso_notices['errors'])
+			? 1
+			: $has_notices;
+		return $has_notices;
+	}
+
+
+	/**
+	 * This simply returns non formatted error notices as they were sent into the EE_Error object.
+	 *
+	 * @since 4.9.0
+	 * @return array
+	 */
+	public static function get_vanilla_notices()
+	{
+		return array(
+			'success'   => isset(self::$_espresso_notices['success'])
+				? self::$_espresso_notices['success']
+				: array(),
+			'attention' => isset(self::$_espresso_notices['attention'])
+				? self::$_espresso_notices['attention']
+				: array(),
+			'errors'    => isset(self::$_espresso_notices['errors'])
+				? self::$_espresso_notices['errors']
+				: array(),
+		);
+	}
+
+
+	/**
+	 * @return array
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	public static function getStoredNotices()
+	{
+		if ($user_id = get_current_user_id()) {
+			// get notices for logged in user
+			$notices = get_user_option(EE_Error::OPTIONS_KEY_NOTICES, $user_id);
+			return is_array($notices) ? $notices : array();
+		}
+		if (EE_Session::isLoadedAndActive()) {
+			// get notices for user currently engaged in a session
+			$session_data = EE_Session::instance()->get_session_data(EE_Error::OPTIONS_KEY_NOTICES);
+			return is_array($session_data) ? $session_data : array();
+		}
+		// get global notices and hope they apply to the current site visitor
+		$notices = get_option(EE_Error::OPTIONS_KEY_NOTICES, array());
+		return is_array($notices) ? $notices : array();
+	}
+
+
+	/**
+	 * @param array $notices
+	 * @return bool
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	public static function storeNotices(array $notices)
+	{
+		if ($user_id = get_current_user_id()) {
+			// store notices for logged in user
+			return (bool) update_user_option(
+				$user_id,
+				EE_Error::OPTIONS_KEY_NOTICES,
+				$notices
+			);
+		}
+		if (EE_Session::isLoadedAndActive()) {
+			// store notices for user currently engaged in a session
+			return EE_Session::instance()->set_session_data(
+				array(EE_Error::OPTIONS_KEY_NOTICES => $notices)
+			);
+		}
+		// store global notices and hope they apply to the same site visitor on the next request
+		return update_option(EE_Error::OPTIONS_KEY_NOTICES, $notices);
+	}
+
+
+	/**
+	 * @return bool|TRUE
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	public static function clearNotices()
+	{
+		if ($user_id = get_current_user_id()) {
+			// clear notices for logged in user
+			return (bool) update_user_option(
+				$user_id,
+				EE_Error::OPTIONS_KEY_NOTICES,
+				array()
+			);
+		}
+		if (EE_Session::isLoadedAndActive()) {
+			// clear notices for user currently engaged in a session
+			return EE_Session::instance()->reset_data(EE_Error::OPTIONS_KEY_NOTICES);
+		}
+		// clear global notices and hope none belonged to some for some other site visitor
+		return update_option(EE_Error::OPTIONS_KEY_NOTICES, array());
+	}
+
+
+	/**
+	 * saves notices to the db for retrieval on next request
+	 *
+	 * @return void
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	public static function stashNoticesBeforeRedirect()
+	{
+		EE_Error::get_notices(false, true);
+	}
+
+
+	/**
+	 * compile all error or success messages into one string
+	 *
+	 * @see EE_Error::get_raw_notices if you want the raw notices without any preparations made to them
+	 * @param boolean $format_output            whether or not to format the messages for display in the WP admin
+	 * @param boolean $save_to_transient        whether or not to save notices to the db for retrieval on next request
+	 *                                          - ONLY do this just before redirecting
+	 * @param boolean $remove_empty             whether or not to unset empty messages
+	 * @return array
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	public static function get_notices($format_output = true, $save_to_transient = false, $remove_empty = true)
+	{
+		$success_messages = '';
+		$attention_messages = '';
+		$error_messages = '';
+		/** @var RequestInterface $request */
+		$request = LoaderFactory::getLoader()->getShared(RequestInterface::class);
+		// either save notices to the db
+		if ($save_to_transient || $request->requestParamIsSet('activate-selected')) {
+			self::$_espresso_notices = array_merge(
+				EE_Error::getStoredNotices(),
+				self::$_espresso_notices
+			);
+			EE_Error::storeNotices(self::$_espresso_notices);
+			return array();
+		}
+		$print_scripts = EE_Error::combineExistingAndNewNotices();
+		// check for success messages
+		if (self::$_espresso_notices['success'] && ! empty(self::$_espresso_notices['success'])) {
+			// combine messages
+			$success_messages .= implode('<br />', self::$_espresso_notices['success']);
+			$print_scripts = true;
+		}
+		// check for attention messages
+		if (self::$_espresso_notices['attention'] && ! empty(self::$_espresso_notices['attention'])) {
+			// combine messages
+			$attention_messages .= implode('<br />', self::$_espresso_notices['attention']);
+			$print_scripts = true;
+		}
+		// check for error messages
+		if (self::$_espresso_notices['errors'] && ! empty(self::$_espresso_notices['errors'])) {
+			$error_messages .= count(self::$_espresso_notices['errors']) > 1
+				? esc_html__('The following errors have occurred:', 'event_espresso')
+				: esc_html__('An error has occurred:', 'event_espresso');
+			// combine messages
+			$error_messages .= '<br />' . implode('<br />', self::$_espresso_notices['errors']);
+			$print_scripts = true;
+		}
+		if ($format_output) {
+			$notices = EE_Error::formatNoticesOutput(
+				$success_messages,
+				$attention_messages,
+				$error_messages
+			);
+		} else {
+			$notices = array(
+				'success'   => $success_messages,
+				'attention' => $attention_messages,
+				'errors'    => $error_messages,
+			);
+			if ($remove_empty) {
+				// remove empty notices
+				foreach ($notices as $type => $notice) {
+					if (empty($notice)) {
+						unset($notices[ $type ]);
+					}
+				}
+			}
+		}
+		if ($print_scripts) {
+			self::_print_scripts();
+		}
+		return $notices;
+	}
+
+
+	/**
+	 * @return bool
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	private static function combineExistingAndNewNotices()
+	{
+		$print_scripts = false;
+		// grab any notices that have been previously saved
+		$notices = EE_Error::getStoredNotices();
+		if (! empty($notices)) {
+			foreach ($notices as $type => $notice) {
+				if (is_array($notice) && ! empty($notice)) {
+					// make sure that existing notice type is an array
+					self::$_espresso_notices[ $type ] = is_array(self::$_espresso_notices[ $type ])
+														&& ! empty(self::$_espresso_notices[ $type ])
+						? self::$_espresso_notices[ $type ]
+						: array();
+					// add newly created notices to existing ones
+					self::$_espresso_notices[ $type ] += $notice;
+					$print_scripts = true;
+				}
+			}
+			// now clear any stored notices
+			EE_Error::clearNotices();
+		}
+		return $print_scripts;
+	}
+
+
+	/**
+	 * @param string $success_messages
+	 * @param string $attention_messages
+	 * @param string $error_messages
+	 * @return string
+	 */
+	private static function formatNoticesOutput($success_messages, $attention_messages, $error_messages)
+	{
+		$notices = '<div id="espresso-notices">';
+		$close = is_admin()
+			? ''
+			: '<a class="close-espresso-notice hide-if-no-js"><span class="dashicons dashicons-no"/></a>';
+		if ($success_messages !== '') {
+			$css_id = is_admin() ? 'ee-success-message' : 'espresso-notices-success';
+			$css_class = is_admin() ? 'updated fade' : 'success fade-away';
+			// showMessage( $success_messages );
+			$notices .= '<div id="' . $css_id . '" '
+						. 'class="espresso-notices ' . $css_class . '" '
+						. 'style="display:none;">'
+						. '<p>' . $success_messages . '</p>'
+						. $close
+						. '</div>';
+		}
+		if ($attention_messages !== '') {
+			$css_id = is_admin() ? 'ee-attention-message' : 'espresso-notices-attention';
+			$css_class = is_admin() ? 'updated ee-notices-attention' : 'attention fade-away';
+			// showMessage( $error_messages, TRUE );
+			$notices .= '<div id="' . $css_id . '" '
+						. 'class="espresso-notices ' . $css_class . '" '
+						. 'style="display:none;">'
+						. '<p>' . $attention_messages . '</p>'
+						. $close
+						. '</div>';
+		}
+		if ($error_messages !== '') {
+			$css_id = is_admin() ? 'ee-error-message' : 'espresso-notices-error';
+			$css_class = is_admin() ? 'error' : 'error fade-away';
+			// showMessage( $error_messages, TRUE );
+			$notices .= '<div id="' . $css_id . '" '
+						. 'class="espresso-notices ' . $css_class . '" '
+						. 'style="display:none;">'
+						. '<p>' . $error_messages . '</p>'
+						. $close
+						. '</div>';
+		}
+		$notices .= '</div>';
+		return $notices;
+	}
+
+
+	/**
+	 * _print_scripts
+	 *
+	 * @param    bool $force_print
+	 * @return    string
+	 */
+	private static function _print_scripts($force_print = false)
+	{
+		if (! $force_print && (did_action('admin_enqueue_scripts') || did_action('wp_enqueue_scripts'))) {
+			if (wp_script_is('ee_error_js', 'registered')) {
+				wp_enqueue_style('espresso_default');
+				wp_enqueue_style('espresso_custom_css');
+				wp_enqueue_script('ee_error_js');
+			}
+			if (wp_script_is('ee_error_js', 'enqueued')) {
+				wp_localize_script('ee_error_js', 'ee_settings', array('wp_debug' => WP_DEBUG));
+				return '';
+			}
+		} else {
+			return '
 <script>
 /* <![CDATA[ */
 var ee_settings = {"wp_debug":"' . WP_DEBUG . '"};
@@ -1026,221 +1026,221 @@ 
 <script src="' . EE_GLOBAL_ASSETS_URL . 'scripts/espresso_core.js' . '?ver=' . espresso_version() . '" type="text/javascript"></script>
 <script src="' . EE_GLOBAL_ASSETS_URL . 'scripts/EE_Error.js' . '?ver=' . espresso_version() . '" type="text/javascript"></script>
 ';
-        }
-        return '';
-    }
-
-
-    /**
-     * @return void
-     */
-    public static function enqueue_error_scripts()
-    {
-        self::_print_scripts();
-    }
-
-
-    /**
-     * create error code from filepath, function name,
-     * and line number where exception or error was thrown
-     *
-     * @param string $file
-     * @param string $func
-     * @param string $line
-     * @return string
-     */
-    public static function generate_error_code($file = '', $func = '', $line = '')
-    {
-        $file = explode('.', basename($file));
-        $error_code = ! empty($file[0]) ? $file[0] : '';
-        $error_code .= ! empty($func) ? ' - ' . $func : '';
-        $error_code .= ! empty($line) ? ' - ' . $line : '';
-        return $error_code;
-    }
-
-
-    /**
-     * write exception details to log file
-     * Since 4.9.53.rc.006 this writes to the standard PHP log file, not EE's custom log file
-     *
-     * @param int   $time
-     * @param array $ex
-     * @param bool  $clear
-     * @return void
-     */
-    public function write_to_error_log($time = 0, $ex = array(), $clear = false)
-    {
-        if (empty($ex)) {
-            return;
-        }
-        if (! $time) {
-            $time = time();
-        }
-        $exception_log = '----------------------------------------------------------------------------------------'
-                         . PHP_EOL;
-        $exception_log .= '[' . date('Y-m-d H:i:s', $time) . ']  Exception Details' . PHP_EOL;
-        $exception_log .= 'Message: ' . $ex['msg'] . PHP_EOL;
-        $exception_log .= 'Code: ' . $ex['code'] . PHP_EOL;
-        $exception_log .= 'File: ' . $ex['file'] . PHP_EOL;
-        $exception_log .= 'Line No: ' . $ex['line'] . PHP_EOL;
-        $exception_log .= 'Stack trace: ' . PHP_EOL;
-        $exception_log .= $ex['string'] . PHP_EOL;
-        $exception_log .= '----------------------------------------------------------------------------------------'
-                          . PHP_EOL;
-        try {
-            error_log($exception_log);
-        } catch (EE_Error $e) {
-            EE_Error::add_error(
-                sprintf(
-                    esc_html__(
-                        'Event Espresso error logging could not be setup because: %s',
-                        'event_espresso'
-                    ),
-                    $e->getMessage()
-                )
-            );
-        }
-    }
-
-
-    /**
-     * This is just a wrapper for the EEH_Debug_Tools::instance()->doing_it_wrong() method.
-     * doing_it_wrong() is used in those cases where a normal PHP error won't get thrown,
-     * but the code execution is done in a manner that could lead to unexpected results
-     * (i.e. running to early, or too late in WP or EE loading process).
-     * A good test for knowing whether to use this method is:
-     * 1. Is there going to be a PHP error if something isn't setup/used correctly?
-     * Yes -> use EE_Error::add_error() or throw new EE_Error()
-     * 2. If this is loaded before something else, it won't break anything,
-     * but just wont' do what its supposed to do? Yes -> use EE_Error::doing_it_wrong()
-     *
-     * @uses   constant WP_DEBUG test if wp_debug is on or not
-     * @param string $function      The function that was called
-     * @param string $message       A message explaining what has been done incorrectly
-     * @param string $version       The version of Event Espresso where the error was added
-     * @param string $applies_when  a version string for when you want the doing_it_wrong notice to begin appearing
-     *                              for a deprecated function. This allows deprecation to occur during one version,
-     *                              but not have any notices appear until a later version. This allows developers
-     *                              extra time to update their code before notices appear.
-     * @param int    $error_type
-     */
-    public static function doing_it_wrong(
-        $function,
-        $message,
-        $version,
-        $applies_when = '',
-        $error_type = null
-    ) {
-        if (defined('WP_DEBUG') && WP_DEBUG) {
-            EEH_Debug_Tools::instance()->doing_it_wrong($function, $message, $version, $applies_when, $error_type);
-        }
-    }
-
-
-    /**
-     * Like get_notices, but returns an array of all the notices of the given type.
-     *
-     * @return array {
-     * @type array $success   all the success messages
-     * @type array $errors    all the error messages
-     * @type array $attention all the attention messages
-     * }
-     */
-    public static function get_raw_notices()
-    {
-        return self::$_espresso_notices;
-    }
-
-
-    /**
-     * @deprecated 4.9.27
-     * @param string $pan_name     the name, or key of the Persistent Admin Notice to be stored
-     * @param string $pan_message  the message to be stored persistently until dismissed
-     * @param bool   $force_update allows one to enforce the reappearance of a persistent message.
-     * @return void
-     * @throws InvalidDataTypeException
-     */
-    public static function add_persistent_admin_notice($pan_name = '', $pan_message, $force_update = false)
-    {
-        new PersistentAdminNotice(
-            $pan_name,
-            $pan_message,
-            $force_update
-        );
-        EE_Error::doing_it_wrong(
-            __METHOD__,
-            sprintf(
-                esc_html__('Usage is deprecated. Use "%1$s" instead.', 'event_espresso'),
-                '\EventEspresso\core\domain\entities\notifications\PersistentAdminNotice'
-            ),
-            '4.9.27'
-        );
-    }
-
-
-    /**
-     * @deprecated 4.9.27
-     * @param string $pan_name the name, or key of the Persistent Admin Notice to be dismissed
-     * @param bool   $purge
-     * @param bool   $return
-     * @throws DomainException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws ServiceNotFoundException
-     * @throws InvalidArgumentException
-     */
-    public static function dismiss_persistent_admin_notice($pan_name = '', $purge = false, $return = false)
-    {
-        /** @var PersistentAdminNoticeManager $persistent_admin_notice_manager */
-        $persistent_admin_notice_manager = LoaderFactory::getLoader()->getShared(
-            'EventEspresso\core\services\notifications\PersistentAdminNoticeManager'
-        );
-        $persistent_admin_notice_manager->dismissNotice($pan_name, $purge, $return);
-        EE_Error::doing_it_wrong(
-            __METHOD__,
-            sprintf(
-                esc_html__('Usage is deprecated. Use "%1$s" instead.', 'event_espresso'),
-                '\EventEspresso\core\services\notifications\PersistentAdminNoticeManager'
-            ),
-            '4.9.27'
-        );
-    }
-
-
-    /**
-     * @deprecated 4.9.27
-     * @param  string $pan_name    the name, or key of the Persistent Admin Notice to be stored
-     * @param  string $pan_message the message to be stored persistently until dismissed
-     * @param  string $return_url  URL to go back to after nag notice is dismissed
-     */
-    public static function display_persistent_admin_notices($pan_name = '', $pan_message = '', $return_url = '')
-    {
-        EE_Error::doing_it_wrong(
-            __METHOD__,
-            sprintf(
-                esc_html__('Usage is deprecated. Use "%1$s" instead.', 'event_espresso'),
-                '\EventEspresso\core\services\notifications\PersistentAdminNoticeManager'
-            ),
-            '4.9.27'
-        );
-    }
-
-
-    /**
-     * @deprecated 4.9.27
-     * @param string $return_url
-     */
-    public static function get_persistent_admin_notices($return_url = '')
-    {
-        EE_Error::doing_it_wrong(
-            __METHOD__,
-            sprintf(
-                esc_html__('Usage is deprecated. Use "%1$s" instead.', 'event_espresso'),
-                '\EventEspresso\core\services\notifications\PersistentAdminNoticeManager'
-            ),
-            '4.9.27'
-        );
-    }
+		}
+		return '';
+	}
+
+
+	/**
+	 * @return void
+	 */
+	public static function enqueue_error_scripts()
+	{
+		self::_print_scripts();
+	}
+
+
+	/**
+	 * create error code from filepath, function name,
+	 * and line number where exception or error was thrown
+	 *
+	 * @param string $file
+	 * @param string $func
+	 * @param string $line
+	 * @return string
+	 */
+	public static function generate_error_code($file = '', $func = '', $line = '')
+	{
+		$file = explode('.', basename($file));
+		$error_code = ! empty($file[0]) ? $file[0] : '';
+		$error_code .= ! empty($func) ? ' - ' . $func : '';
+		$error_code .= ! empty($line) ? ' - ' . $line : '';
+		return $error_code;
+	}
+
+
+	/**
+	 * write exception details to log file
+	 * Since 4.9.53.rc.006 this writes to the standard PHP log file, not EE's custom log file
+	 *
+	 * @param int   $time
+	 * @param array $ex
+	 * @param bool  $clear
+	 * @return void
+	 */
+	public function write_to_error_log($time = 0, $ex = array(), $clear = false)
+	{
+		if (empty($ex)) {
+			return;
+		}
+		if (! $time) {
+			$time = time();
+		}
+		$exception_log = '----------------------------------------------------------------------------------------'
+						 . PHP_EOL;
+		$exception_log .= '[' . date('Y-m-d H:i:s', $time) . ']  Exception Details' . PHP_EOL;
+		$exception_log .= 'Message: ' . $ex['msg'] . PHP_EOL;
+		$exception_log .= 'Code: ' . $ex['code'] . PHP_EOL;
+		$exception_log .= 'File: ' . $ex['file'] . PHP_EOL;
+		$exception_log .= 'Line No: ' . $ex['line'] . PHP_EOL;
+		$exception_log .= 'Stack trace: ' . PHP_EOL;
+		$exception_log .= $ex['string'] . PHP_EOL;
+		$exception_log .= '----------------------------------------------------------------------------------------'
+						  . PHP_EOL;
+		try {
+			error_log($exception_log);
+		} catch (EE_Error $e) {
+			EE_Error::add_error(
+				sprintf(
+					esc_html__(
+						'Event Espresso error logging could not be setup because: %s',
+						'event_espresso'
+					),
+					$e->getMessage()
+				)
+			);
+		}
+	}
+
+
+	/**
+	 * This is just a wrapper for the EEH_Debug_Tools::instance()->doing_it_wrong() method.
+	 * doing_it_wrong() is used in those cases where a normal PHP error won't get thrown,
+	 * but the code execution is done in a manner that could lead to unexpected results
+	 * (i.e. running to early, or too late in WP or EE loading process).
+	 * A good test for knowing whether to use this method is:
+	 * 1. Is there going to be a PHP error if something isn't setup/used correctly?
+	 * Yes -> use EE_Error::add_error() or throw new EE_Error()
+	 * 2. If this is loaded before something else, it won't break anything,
+	 * but just wont' do what its supposed to do? Yes -> use EE_Error::doing_it_wrong()
+	 *
+	 * @uses   constant WP_DEBUG test if wp_debug is on or not
+	 * @param string $function      The function that was called
+	 * @param string $message       A message explaining what has been done incorrectly
+	 * @param string $version       The version of Event Espresso where the error was added
+	 * @param string $applies_when  a version string for when you want the doing_it_wrong notice to begin appearing
+	 *                              for a deprecated function. This allows deprecation to occur during one version,
+	 *                              but not have any notices appear until a later version. This allows developers
+	 *                              extra time to update their code before notices appear.
+	 * @param int    $error_type
+	 */
+	public static function doing_it_wrong(
+		$function,
+		$message,
+		$version,
+		$applies_when = '',
+		$error_type = null
+	) {
+		if (defined('WP_DEBUG') && WP_DEBUG) {
+			EEH_Debug_Tools::instance()->doing_it_wrong($function, $message, $version, $applies_when, $error_type);
+		}
+	}
+
+
+	/**
+	 * Like get_notices, but returns an array of all the notices of the given type.
+	 *
+	 * @return array {
+	 * @type array $success   all the success messages
+	 * @type array $errors    all the error messages
+	 * @type array $attention all the attention messages
+	 * }
+	 */
+	public static function get_raw_notices()
+	{
+		return self::$_espresso_notices;
+	}
+
+
+	/**
+	 * @deprecated 4.9.27
+	 * @param string $pan_name     the name, or key of the Persistent Admin Notice to be stored
+	 * @param string $pan_message  the message to be stored persistently until dismissed
+	 * @param bool   $force_update allows one to enforce the reappearance of a persistent message.
+	 * @return void
+	 * @throws InvalidDataTypeException
+	 */
+	public static function add_persistent_admin_notice($pan_name = '', $pan_message, $force_update = false)
+	{
+		new PersistentAdminNotice(
+			$pan_name,
+			$pan_message,
+			$force_update
+		);
+		EE_Error::doing_it_wrong(
+			__METHOD__,
+			sprintf(
+				esc_html__('Usage is deprecated. Use "%1$s" instead.', 'event_espresso'),
+				'\EventEspresso\core\domain\entities\notifications\PersistentAdminNotice'
+			),
+			'4.9.27'
+		);
+	}
+
+
+	/**
+	 * @deprecated 4.9.27
+	 * @param string $pan_name the name, or key of the Persistent Admin Notice to be dismissed
+	 * @param bool   $purge
+	 * @param bool   $return
+	 * @throws DomainException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws ServiceNotFoundException
+	 * @throws InvalidArgumentException
+	 */
+	public static function dismiss_persistent_admin_notice($pan_name = '', $purge = false, $return = false)
+	{
+		/** @var PersistentAdminNoticeManager $persistent_admin_notice_manager */
+		$persistent_admin_notice_manager = LoaderFactory::getLoader()->getShared(
+			'EventEspresso\core\services\notifications\PersistentAdminNoticeManager'
+		);
+		$persistent_admin_notice_manager->dismissNotice($pan_name, $purge, $return);
+		EE_Error::doing_it_wrong(
+			__METHOD__,
+			sprintf(
+				esc_html__('Usage is deprecated. Use "%1$s" instead.', 'event_espresso'),
+				'\EventEspresso\core\services\notifications\PersistentAdminNoticeManager'
+			),
+			'4.9.27'
+		);
+	}
+
+
+	/**
+	 * @deprecated 4.9.27
+	 * @param  string $pan_name    the name, or key of the Persistent Admin Notice to be stored
+	 * @param  string $pan_message the message to be stored persistently until dismissed
+	 * @param  string $return_url  URL to go back to after nag notice is dismissed
+	 */
+	public static function display_persistent_admin_notices($pan_name = '', $pan_message = '', $return_url = '')
+	{
+		EE_Error::doing_it_wrong(
+			__METHOD__,
+			sprintf(
+				esc_html__('Usage is deprecated. Use "%1$s" instead.', 'event_espresso'),
+				'\EventEspresso\core\services\notifications\PersistentAdminNoticeManager'
+			),
+			'4.9.27'
+		);
+	}
+
+
+	/**
+	 * @deprecated 4.9.27
+	 * @param string $return_url
+	 */
+	public static function get_persistent_admin_notices($return_url = '')
+	{
+		EE_Error::doing_it_wrong(
+			__METHOD__,
+			sprintf(
+				esc_html__('Usage is deprecated. Use "%1$s" instead.', 'event_espresso'),
+				'\EventEspresso\core\services\notifications\PersistentAdminNoticeManager'
+			),
+			'4.9.27'
+		);
+	}
 }
 
 // end of Class EE_Exceptions
@@ -1253,26 +1253,26 @@ 
  */
 function espresso_error_enqueue_scripts()
 {
-    // js for error handling
-    wp_register_script(
-        'espresso_core',
-        EE_GLOBAL_ASSETS_URL . 'scripts/espresso_core.js',
-        array('jquery'),
-        EVENT_ESPRESSO_VERSION
-    );
-    wp_register_script(
-        'ee_error_js',
-        EE_GLOBAL_ASSETS_URL . 'scripts/EE_Error.js',
-        array('espresso_core'),
-        EVENT_ESPRESSO_VERSION
-    );
-    wp_localize_script('ee_error_js', 'ee_settings', ['wp_debug' => WP_DEBUG]);
+	// js for error handling
+	wp_register_script(
+		'espresso_core',
+		EE_GLOBAL_ASSETS_URL . 'scripts/espresso_core.js',
+		array('jquery'),
+		EVENT_ESPRESSO_VERSION
+	);
+	wp_register_script(
+		'ee_error_js',
+		EE_GLOBAL_ASSETS_URL . 'scripts/EE_Error.js',
+		array('espresso_core'),
+		EVENT_ESPRESSO_VERSION
+	);
+	wp_localize_script('ee_error_js', 'ee_settings', ['wp_debug' => WP_DEBUG]);
 }
 
 if (is_admin()) {
-    add_action('admin_enqueue_scripts', 'espresso_error_enqueue_scripts', 5);
+	add_action('admin_enqueue_scripts', 'espresso_error_enqueue_scripts', 5);
 } else {
-    add_action('wp_enqueue_scripts', 'espresso_error_enqueue_scripts', 5);
+	add_action('wp_enqueue_scripts', 'espresso_error_enqueue_scripts', 5);
 }
 
 

Spacing +65 added lines, -65 removed lines

@@ -101,14 +101,14 @@ 
             default:
                 $to = get_option('admin_email');
         }
-        $subject = $type . ' ' . $message . ' in ' . EVENT_ESPRESSO_VERSION . ' on ' . site_url();
+        $subject = $type.' '.$message.' in '.EVENT_ESPRESSO_VERSION.' on '.site_url();
         $msg = EE_Error::_format_error($type, $message, $file, $line);
         if (function_exists('wp_mail')) {
             add_filter('wp_mail_content_type', array('EE_Error', 'set_content_type'));
             wp_mail($to, $subject, $msg);
         }
         echo '<div id="message" class="espresso-notices error"><p>';
-        echo wp_kses($type . ': ' . $message . '<br />' . $file . ' line ' . $line, AllowedTags::getWithFormTags());
+        echo wp_kses($type.': '.$message.'<br />'.$file.' line '.$line, AllowedTags::getWithFormTags());
         echo '<br /></p></div>';
     }
 
@@ -224,13 +224,13 @@ 
         $msg = WP_DEBUG ? $dev_msg : $user_msg;
         // add details to _all_exceptions array
         $x_time = time();
-        self::$_all_exceptions[ $x_time ]['name'] = get_class($this);
-        self::$_all_exceptions[ $x_time ]['file'] = $this->getFile();
-        self::$_all_exceptions[ $x_time ]['line'] = $this->getLine();
-        self::$_all_exceptions[ $x_time ]['msg'] = $msg;
-        self::$_all_exceptions[ $x_time ]['code'] = $this->getCode();
-        self::$_all_exceptions[ $x_time ]['trace'] = $this->getTrace();
-        self::$_all_exceptions[ $x_time ]['string'] = $this->getTraceAsString();
+        self::$_all_exceptions[$x_time]['name'] = get_class($this);
+        self::$_all_exceptions[$x_time]['file'] = $this->getFile();
+        self::$_all_exceptions[$x_time]['line'] = $this->getLine();
+        self::$_all_exceptions[$x_time]['msg'] = $msg;
+        self::$_all_exceptions[$x_time]['code'] = $this->getCode();
+        self::$_all_exceptions[$x_time]['trace'] = $this->getTrace();
+        self::$_all_exceptions[$x_time]['string'] = $this->getTraceAsString();
         self::$_error_count++;
         // add_action( 'shutdown', array( $this, 'display_errors' ));
         $this->display_errors();
@@ -248,8 +248,8 @@ 
      */
     public static function has_error($check_stored = false, $type_to_check = 'errors')
     {
-        $has_error = isset(self::$_espresso_notices[ $type_to_check ])
-                     && ! empty(self::$_espresso_notices[ $type_to_check ])
+        $has_error = isset(self::$_espresso_notices[$type_to_check])
+                     && ! empty(self::$_espresso_notices[$type_to_check])
             ? true
             : false;
         if ($check_stored && ! $has_error) {
@@ -327,7 +327,7 @@ 
 	}
 </style>
 <div id="ee-error-message" class="error">';
-        if (! WP_DEBUG) {
+        if ( ! WP_DEBUG) {
             $output .= '
 	<p>';
         }
@@ -386,14 +386,14 @@ 
                     $class_dsply = ! empty($class) ? $class : '&nbsp;';
                     $type_dsply = ! empty($type) ? $type : '&nbsp;';
                     $function_dsply = ! empty($function) ? $function : '&nbsp;';
-                    $args_dsply = ! empty($args) ? '( ' . $args . ' )' : '';
+                    $args_dsply = ! empty($args) ? '( '.$args.' )' : '';
                     $trace_details .= '
 					<tr>
-						<td align="right" class="' . $zebra . '">' . $nmbr_dsply . '</td>
-						<td align="right" class="' . $zebra . '">' . $line_dsply . '</td>
-						<td align="left" class="' . $zebra . '">' . $file_dsply . '</td>
-						<td align="left" class="' . $zebra . '">' . $class_dsply . '</td>
-						<td align="left" class="' . $zebra . '">' . $type_dsply . $function_dsply . $args_dsply . '</td>
+						<td align="right" class="' . $zebra.'">'.$nmbr_dsply.'</td>
+						<td align="right" class="' . $zebra.'">'.$line_dsply.'</td>
+						<td align="left" class="' . $zebra.'">'.$file_dsply.'</td>
+						<td align="left" class="' . $zebra.'">'.$class_dsply.'</td>
+						<td align="left" class="' . $zebra.'">'.$type_dsply.$function_dsply.$args_dsply.'</td>
 					</tr>';
                 }
                 $trace_details .= '
@@ -402,7 +402,7 @@ 
             }
             $ex['code'] = $ex['code'] ? $ex['code'] : $error_code;
             // add generic non-identifying messages for non-privileged users
-            if (! WP_DEBUG) {
+            if ( ! WP_DEBUG) {
                 $output .= '<span class="ee-error-user-msg-spn">'
                            . trim($ex['msg'])
                            . '</span> &nbsp; <sup>'
@@ -444,14 +444,14 @@ 
                            . '-dv" class="ee-error-trace-dv" style="display: none;">
 				'
                            . $trace_details;
-                if (! empty($class)) {
+                if ( ! empty($class)) {
                     $output .= '
 				<div style="padding:3px; margin:0 0 1em; border:1px solid #666; background:#fff; border-radius:3px;">
 					<div style="padding:1em 2em; border:1px solid #666; background:#f9f9f9;">
 						<h3>Class Details</h3>';
                     $a = new ReflectionClass($class);
                     $output .= '
-						<pre>' . $a . '</pre>
+						<pre>' . $a.'</pre>
 					</div>
 				</div>';
                 }
@@ -464,7 +464,7 @@ 
         }
         // remove last linebreak
         $output = substr($output, 0, -6);
-        if (! WP_DEBUG) {
+        if ( ! WP_DEBUG) {
             $output .= '
 	</p>';
         }
@@ -490,20 +490,20 @@ 
     private function _convert_args_to_string($arguments = array(), $array = false)
     {
         $arg_string = '';
-        if (! empty($arguments)) {
+        if ( ! empty($arguments)) {
             $args = array();
             foreach ($arguments as $arg) {
-                if (! empty($arg)) {
+                if ( ! empty($arg)) {
                     if (is_string($arg)) {
-                        $args[] = " '" . $arg . "'";
+                        $args[] = " '".$arg."'";
                     } elseif (is_array($arg)) {
-                        $args[] = 'ARRAY(' . $this->_convert_args_to_string($arg, true);
+                        $args[] = 'ARRAY('.$this->_convert_args_to_string($arg, true);
                     } elseif ($arg === null) {
                         $args[] = ' NULL';
                     } elseif (is_bool($arg)) {
                         $args[] = ($arg) ? ' TRUE' : ' FALSE';
                     } elseif (is_object($arg)) {
-                        $args[] = ' OBJECT ' . get_class($arg);
+                        $args[] = ' OBJECT '.get_class($arg);
                     } elseif (is_resource($arg)) {
                         $args[] = get_resource_type($arg);
                     } else {
@@ -601,7 +601,7 @@ 
     {
         if (empty($msg)) {
             EE_Error::doing_it_wrong(
-                'EE_Error::add_' . $type . '()',
+                'EE_Error::add_'.$type.'()',
                 sprintf(
                     esc_html__(
                         'Notifications are not much use without a message! Please add a message to the EE_Error::add_%s() call made in %s on line %d',
@@ -641,17 +641,17 @@ 
         do_action('AHEE__EE_Error___add_notice', $type, $user_msg, $dev_msg, $file, $func, $line);
         $msg = WP_DEBUG ? $dev_msg : $user_msg;
         // add notice if message exists
-        if (! empty($msg)) {
+        if ( ! empty($msg)) {
             // get error code
             $notice_code = EE_Error::generate_error_code($file, $func, $line);
             if (WP_DEBUG && $type === 'errors') {
-                $msg .= '<br/><span class="tiny-text">' . $notice_code . '</span>';
+                $msg .= '<br/><span class="tiny-text">'.$notice_code.'</span>';
             }
             // add notice. Index by code if it's not blank
             if ($notice_code) {
-                self::$_espresso_notices[ $type ][ $notice_code ] = $msg;
+                self::$_espresso_notices[$type][$notice_code] = $msg;
             } else {
-                self::$_espresso_notices[ $type ][] = $msg;
+                self::$_espresso_notices[$type][] = $msg;
             }
             add_action('wp_footer', array('EE_Error', 'enqueue_error_scripts'), 1);
         }
@@ -885,7 +885,7 @@ 
                 ? esc_html__('The following errors have occurred:', 'event_espresso')
                 : esc_html__('An error has occurred:', 'event_espresso');
             // combine messages
-            $error_messages .= '<br />' . implode('<br />', self::$_espresso_notices['errors']);
+            $error_messages .= '<br />'.implode('<br />', self::$_espresso_notices['errors']);
             $print_scripts = true;
         }
         if ($format_output) {
@@ -904,7 +904,7 @@ 
                 // remove empty notices
                 foreach ($notices as $type => $notice) {
                     if (empty($notice)) {
-                        unset($notices[ $type ]);
+                        unset($notices[$type]);
                     }
                 }
             }
@@ -927,16 +927,16 @@ 
         $print_scripts = false;
         // grab any notices that have been previously saved
         $notices = EE_Error::getStoredNotices();
-        if (! empty($notices)) {
+        if ( ! empty($notices)) {
             foreach ($notices as $type => $notice) {
                 if (is_array($notice) && ! empty($notice)) {
                     // make sure that existing notice type is an array
-                    self::$_espresso_notices[ $type ] = is_array(self::$_espresso_notices[ $type ])
-                                                        && ! empty(self::$_espresso_notices[ $type ])
-                        ? self::$_espresso_notices[ $type ]
+                    self::$_espresso_notices[$type] = is_array(self::$_espresso_notices[$type])
+                                                        && ! empty(self::$_espresso_notices[$type])
+                        ? self::$_espresso_notices[$type]
                         : array();
                     // add newly created notices to existing ones
-                    self::$_espresso_notices[ $type ] += $notice;
+                    self::$_espresso_notices[$type] += $notice;
                     $print_scripts = true;
                 }
             }
@@ -963,10 +963,10 @@ 
             $css_id = is_admin() ? 'ee-success-message' : 'espresso-notices-success';
             $css_class = is_admin() ? 'updated fade' : 'success fade-away';
             // showMessage( $success_messages );
-            $notices .= '<div id="' . $css_id . '" '
-                        . 'class="espresso-notices ' . $css_class . '" '
+            $notices .= '<div id="'.$css_id.'" '
+                        . 'class="espresso-notices '.$css_class.'" '
                         . 'style="display:none;">'
-                        . '<p>' . $success_messages . '</p>'
+                        . '<p>'.$success_messages.'</p>'
                         . $close
                         . '</div>';
         }
@@ -974,10 +974,10 @@ 
             $css_id = is_admin() ? 'ee-attention-message' : 'espresso-notices-attention';
             $css_class = is_admin() ? 'updated ee-notices-attention' : 'attention fade-away';
             // showMessage( $error_messages, TRUE );
-            $notices .= '<div id="' . $css_id . '" '
-                        . 'class="espresso-notices ' . $css_class . '" '
+            $notices .= '<div id="'.$css_id.'" '
+                        . 'class="espresso-notices '.$css_class.'" '
                         . 'style="display:none;">'
-                        . '<p>' . $attention_messages . '</p>'
+                        . '<p>'.$attention_messages.'</p>'
                         . $close
                         . '</div>';
         }
@@ -985,10 +985,10 @@ 
             $css_id = is_admin() ? 'ee-error-message' : 'espresso-notices-error';
             $css_class = is_admin() ? 'error' : 'error fade-away';
             // showMessage( $error_messages, TRUE );
-            $notices .= '<div id="' . $css_id . '" '
-                        . 'class="espresso-notices ' . $css_class . '" '
+            $notices .= '<div id="'.$css_id.'" '
+                        . 'class="espresso-notices '.$css_class.'" '
                         . 'style="display:none;">'
-                        . '<p>' . $error_messages . '</p>'
+                        . '<p>'.$error_messages.'</p>'
                         . $close
                         . '</div>';
         }
@@ -1005,7 +1005,7 @@ 
      */
     private static function _print_scripts($force_print = false)
     {
-        if (! $force_print && (did_action('admin_enqueue_scripts') || did_action('wp_enqueue_scripts'))) {
+        if ( ! $force_print && (did_action('admin_enqueue_scripts') || did_action('wp_enqueue_scripts'))) {
             if (wp_script_is('ee_error_js', 'registered')) {
                 wp_enqueue_style('espresso_default');
                 wp_enqueue_style('espresso_custom_css');
@@ -1019,12 +1019,12 @@ 
             return '
 <script>
 /* <![CDATA[ */
-var ee_settings = {"wp_debug":"' . WP_DEBUG . '"};
+var ee_settings = {"wp_debug":"' . WP_DEBUG.'"};
 /* ]]> */
 </script>
-<script src="' . includes_url() . 'js/jquery/jquery.js" type="text/javascript"></script>
-<script src="' . EE_GLOBAL_ASSETS_URL . 'scripts/espresso_core.js' . '?ver=' . espresso_version() . '" type="text/javascript"></script>
-<script src="' . EE_GLOBAL_ASSETS_URL . 'scripts/EE_Error.js' . '?ver=' . espresso_version() . '" type="text/javascript"></script>
+<script src="' . includes_url().'js/jquery/jquery.js" type="text/javascript"></script>
+<script src="' . EE_GLOBAL_ASSETS_URL.'scripts/espresso_core.js'.'?ver='.espresso_version().'" type="text/javascript"></script>
+<script src="' . EE_GLOBAL_ASSETS_URL.'scripts/EE_Error.js'.'?ver='.espresso_version().'" type="text/javascript"></script>
 ';
         }
         return '';
@@ -1053,8 +1053,8 @@ 
     {
         $file = explode('.', basename($file));
         $error_code = ! empty($file[0]) ? $file[0] : '';
-        $error_code .= ! empty($func) ? ' - ' . $func : '';
-        $error_code .= ! empty($line) ? ' - ' . $line : '';
+        $error_code .= ! empty($func) ? ' - '.$func : '';
+        $error_code .= ! empty($line) ? ' - '.$line : '';
         return $error_code;
     }
 
@@ -1073,18 +1073,18 @@ 
         if (empty($ex)) {
             return;
         }
-        if (! $time) {
+        if ( ! $time) {
             $time = time();
         }
         $exception_log = '----------------------------------------------------------------------------------------'
                          . PHP_EOL;
-        $exception_log .= '[' . date('Y-m-d H:i:s', $time) . ']  Exception Details' . PHP_EOL;
-        $exception_log .= 'Message: ' . $ex['msg'] . PHP_EOL;
-        $exception_log .= 'Code: ' . $ex['code'] . PHP_EOL;
-        $exception_log .= 'File: ' . $ex['file'] . PHP_EOL;
-        $exception_log .= 'Line No: ' . $ex['line'] . PHP_EOL;
-        $exception_log .= 'Stack trace: ' . PHP_EOL;
-        $exception_log .= $ex['string'] . PHP_EOL;
+        $exception_log .= '['.date('Y-m-d H:i:s', $time).']  Exception Details'.PHP_EOL;
+        $exception_log .= 'Message: '.$ex['msg'].PHP_EOL;
+        $exception_log .= 'Code: '.$ex['code'].PHP_EOL;
+        $exception_log .= 'File: '.$ex['file'].PHP_EOL;
+        $exception_log .= 'Line No: '.$ex['line'].PHP_EOL;
+        $exception_log .= 'Stack trace: '.PHP_EOL;
+        $exception_log .= $ex['string'].PHP_EOL;
         $exception_log .= '----------------------------------------------------------------------------------------'
                           . PHP_EOL;
         try {
@@ -1256,13 +1256,13 @@ 
     // js for error handling
     wp_register_script(
         'espresso_core',
-        EE_GLOBAL_ASSETS_URL . 'scripts/espresso_core.js',
+        EE_GLOBAL_ASSETS_URL.'scripts/espresso_core.js',
         array('jquery'),
         EVENT_ESPRESSO_VERSION
     );
     wp_register_script(
         'ee_error_js',
-        EE_GLOBAL_ASSETS_URL . 'scripts/EE_Error.js',
+        EE_GLOBAL_ASSETS_URL.'scripts/EE_Error.js',
         array('espresso_core'),
         EVENT_ESPRESSO_VERSION
     );

caffeinated/admin/extend/events/templates/import_page.template.php

Indentation +3 added lines, -3 removed lines

@@ -1,9 +1,9 @@
 <div class="import-area">
     <div class="important-notice">
         <?php esc_html_e(
-            'The import feature has been disabled because of bugs. It is expected to be put back in place soon.',
-            'event_espresso'
-        ); ?>
+			'The import feature has been disabled because of bugs. It is expected to be put back in place soon.',
+			'event_espresso'
+		); ?>
     </div>
     <?php // echo wp_kses($form, \EventEspresso\core\services\request\sanitizers\AllowedTags::getWithFormTags()); ?>
 </div>

modules/ical/EED_Ical.module.php

Indentation +231 added lines, -231 removed lines

@@ -15,235 +15,235 @@
 class EED_Ical extends EED_Module
 {
 
-    const iCal_datetime_format = 'Ymd\THis\Z';
-
-
-    /**
-     * @return EED_Ical|EED_Module
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public static function instance()
-    {
-        return parent::get_instance(__CLASS__);
-    }
-
-
-    /**
-     *    set_hooks - for hooking into EE Core, other modules, etc
-     *
-     * @return    void
-     */
-    public static function set_hooks()
-    {
-        // create download buttons
-        add_filter(
-            'FHEE__espresso_list_of_event_dates__datetime_html',
-            ['EED_Ical', 'generate_add_to_iCal_button'],
-            10,
-            2
-        );
-        // process ics download request
-        EE_Config::register_route('download_ics_file', 'EED_Ical', 'download_ics_file');
-    }
-
-
-    /**
-     *    set_hooks_admin - for hooking into EE Admin Core, other modules, etc
-     *
-     * @return    void
-     */
-    public static function set_hooks_admin()
-    {
-    }
-
-
-    /**
-     *    run - initial module setup
-     *
-     * @param WP $WP
-     * @return    void
-     */
-    public function run($WP)
-    {
-    }
-
-
-    /**
-     * @param $html
-     * @param $datetime
-     * @return string
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public static function generate_add_to_iCal_button($html, $datetime)
-    {
-        // first verify a proper datetime object has been received
-        if ($datetime instanceof EE_Datetime) {
-            // set whether a link or submit button is shown
-            $iCal_type = apply_filters('FHEE__EED_Ical__generate_add_to_iCal_button__iCal_type', 'submit');
-            // generate a link to the route we registered in set_hooks()
-            $URL = add_query_arg(['ee' => 'download_ics_file', 'ics_id' => $datetime->ID()], site_url());
-            $URL = esc_url_Raw($URL);
-            // what type ?
-            switch ($iCal_type) {
-                // submit buttons appear as buttons and are very compatible with a theme's style
-                case 'submit':
-                    $html .= '<form id="download-iCal-frm-' . $datetime->ID();
-                    $html .= '" class="download-iCal-frm" action="' . $URL . '" method="post" >';
-                    $html .= '<input type="submit" class="ee-ical-sbmt" value="&#xf145;" title="';
-                    $html .= esc_html__('Add to iCal Calendar', 'event_espresso') . '"/>';
-                    $html .= '</form>';
-                    break;
-                // buttons are just links that have been styled to appear as buttons,
-                // but may not be blend with a theme as well as submit buttons
-                case 'button':
-                    $html .= '<a class="ee-ical-btn small ee-button ee-roundish" href="' . $URL;
-                    $html .= '" title="' . esc_html__('Add to iCal Calendar', 'event_espresso') . '">';
-                    $html .= ' <span class="dashicons dashicons-calendar"></span>';
-                    $html .= '</a>';
-                    break;
-                // links are just links that use the calendar dashicon
-                case 'icon':
-                    $html .= '<a class="ee-ical-lnk" href="' . $URL . '" title="';
-                    $html .= esc_html__('Add to iCal Calendar', 'event_espresso') . '">';
-                    $html .= ' <span class="dashicons dashicons-calendar"></span>';
-                    $html .= '</a>';
-                    break;
-            }
-        }
-        return $html;
-    }
-
-
-    /**
-     * @return void
-     * @throws EE_Error
-     * @throws ReflectionException
-     */
-    public static function download_ics_file()
-    {
-        $request = self::getRequest();
-        if ($request->requestParamIsSet('ics_id')) {
-            $DTT_ID   = $request->getRequestParam('ics_id', 0, 'int');
-            $datetime = EEM_Datetime::instance()->get_one_by_ID($DTT_ID);
-            if ($datetime instanceof EE_Datetime) {
-                // get related event, venues, and event categories
-                $event = $datetime->event();
-                if ($event instanceof EE_Event) {
-                    // get related category Term object and it's name
-                    $category = $event->first_event_category();
-                    if ($category instanceof EE_Term) {
-                        $category = $category->name();
-                    }
-                    $location = '';
-                    // get first related venue and convert to CSV string
-                    $venue = $event->venues(['limit' => 1]);
-                    if (is_array($venue) && ! empty($venue)) {
-                        $venue = array_shift($venue);
-                        if ($venue instanceof EE_Venue) {
-                            $location = espresso_venue_raw_address('inline', $venue->ID(), false);
-                        }
-                    }
-
-                    // Generate filename
-                    $filename = $event->slug() . '-' . $datetime->start_date('Y-m-d') . '.ics';
-
-                    // Check the datetime status has not been cancelled and set the ics value accordingly
-                    $status = $datetime->get_active_status();
-                    $status = $status === EE_Datetime::cancelled ? 'CANCELLED' : 'CONFIRMED';
-
-                    // Create array of ics details, escape strings, convert timestamps to ics format, etc
-                    $ics_data = [
-                        'ORGANIZER_NAME' => EE_Registry::instance()->CFG->organization->name,
-                        'UID'            => md5($event->name() . $event->ID() . $datetime->ID()),
-                        'ORGANIZER'      => EE_Registry::instance()->CFG->organization->email,
-                        'DTSTAMP'        => date(EED_Ical::iCal_datetime_format),
-                        'LOCATION'       => $location,
-                        'SUMMARY'        => $event->name(),
-                        'DESCRIPTION'    => wp_strip_all_tags($event->description()),
-                        'STATUS'         => $status,
-                        'CATEGORIES'     => $category,
-                        'URL;VALUE=URI'  => get_permalink($event->ID()),
-                        'DTSTART'        => date(EED_Ical::iCal_datetime_format, $datetime->start()),
-                        'DTEND'          => date(EED_Ical::iCal_datetime_format, $datetime->end()),
-                    ];
-
-                    // Filter the values used within the ics output.
-                    // NOTE - all values within ics_data will be escaped automatically.
-                    $ics_data = apply_filters('FHEE__EED_Ical__download_ics_file_ics_data', $ics_data, $datetime);
-
-                    // Escape all ics data
-                    foreach ($ics_data as $key => $value) {
-                        // Description is escaped differently from all all values
-                        if ($key === 'DESCRIPTION') {
-                            $ics_data[ $key ] = EED_Ical::_escape_ICal_description(wp_strip_all_tags($value));
-                        } else {
-                            $ics_data[ $key ] = EED_Ical::_escape_ICal_data($value);
-                        }
-                    }
-
-                    // Pull the organizer name from ics_data and remove it from the array.
-                    $organizer_name = isset($ics_data['ORGANIZER_NAME'])
-                        ? $ics_data['ORGANIZER_NAME']
-                        : '';
-                    unset($ics_data['ORGANIZER_NAME']);
-
-                    // set headers
-                    header('Content-type: text/calendar; charset=utf-8');
-                    header('Content-Disposition: attachment; filename="' . $filename . '"');
-                    header('Cache-Control: private, max-age=0, must-revalidate');
-                    header('Pragma: public');
-                    header('Content-Type: application/octet-stream');
-                    header('Content-Type: application/force-download');
-                    header('Cache-Control: no-cache, must-revalidate');
-                    header('Content-Transfer-Encoding: binary');
-                    header('Expires: Sat, 26 Jul 1997 05:00:00 GMT'); // past date
-                    ini_set('zlib.output_compression', '0');
-                    // echo the output
-                    echo "BEGIN:VCALENDAR\r\n";
-                    echo "VERSION:2.0\r\n";
-                    echo "PRODID:-//{$organizer_name}//NONSGML PDA Calendar Version 1.0//EN\r\n";
-                    echo "CALSCALE:GREGORIAN\r\n";
-                    echo "BEGIN:VEVENT\r\n";
-
-                    // Output all remaining values from ics_data.
-                    foreach ($ics_data as $key => $value) {
-                        echo wp_kses($key . ':' . $value, AllowedTags::getAllowedTags()) . "\r\n";
-                    }
-
-                    echo "END:VEVENT\r\n";
-                    echo "END:VCALENDAR\r\n";
-                }
-            }
-        }
-        die();
-    }
-
-
-    /**
-     *    _escape_ICal_data
-     *
-     * @param string $string
-     * @return    string
-     */
-    private static function _escape_ICal_data($string = '')
-    {
-        return preg_replace('/([\,;])/', '\\\$1', $string);
-    }
-
-
-    /**
-     *    _escape_ICal_description
-     *
-     * @param string $description
-     * @return    string
-     */
-    private static function _escape_ICal_description($description = '')
-    {
-        // Escape special chars within the description
-        $description = EED_Ical::_escape_ICal_data($description);
-        // Remove line breaks and output in iCal format
-        return str_replace(["\r\n", "\n"], '\n', $description);
-    }
+	const iCal_datetime_format = 'Ymd\THis\Z';
+
+
+	/**
+	 * @return EED_Ical|EED_Module
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public static function instance()
+	{
+		return parent::get_instance(__CLASS__);
+	}
+
+
+	/**
+	 *    set_hooks - for hooking into EE Core, other modules, etc
+	 *
+	 * @return    void
+	 */
+	public static function set_hooks()
+	{
+		// create download buttons
+		add_filter(
+			'FHEE__espresso_list_of_event_dates__datetime_html',
+			['EED_Ical', 'generate_add_to_iCal_button'],
+			10,
+			2
+		);
+		// process ics download request
+		EE_Config::register_route('download_ics_file', 'EED_Ical', 'download_ics_file');
+	}
+
+
+	/**
+	 *    set_hooks_admin - for hooking into EE Admin Core, other modules, etc
+	 *
+	 * @return    void
+	 */
+	public static function set_hooks_admin()
+	{
+	}
+
+
+	/**
+	 *    run - initial module setup
+	 *
+	 * @param WP $WP
+	 * @return    void
+	 */
+	public function run($WP)
+	{
+	}
+
+
+	/**
+	 * @param $html
+	 * @param $datetime
+	 * @return string
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public static function generate_add_to_iCal_button($html, $datetime)
+	{
+		// first verify a proper datetime object has been received
+		if ($datetime instanceof EE_Datetime) {
+			// set whether a link or submit button is shown
+			$iCal_type = apply_filters('FHEE__EED_Ical__generate_add_to_iCal_button__iCal_type', 'submit');
+			// generate a link to the route we registered in set_hooks()
+			$URL = add_query_arg(['ee' => 'download_ics_file', 'ics_id' => $datetime->ID()], site_url());
+			$URL = esc_url_Raw($URL);
+			// what type ?
+			switch ($iCal_type) {
+				// submit buttons appear as buttons and are very compatible with a theme's style
+				case 'submit':
+					$html .= '<form id="download-iCal-frm-' . $datetime->ID();
+					$html .= '" class="download-iCal-frm" action="' . $URL . '" method="post" >';
+					$html .= '<input type="submit" class="ee-ical-sbmt" value="&#xf145;" title="';
+					$html .= esc_html__('Add to iCal Calendar', 'event_espresso') . '"/>';
+					$html .= '</form>';
+					break;
+				// buttons are just links that have been styled to appear as buttons,
+				// but may not be blend with a theme as well as submit buttons
+				case 'button':
+					$html .= '<a class="ee-ical-btn small ee-button ee-roundish" href="' . $URL;
+					$html .= '" title="' . esc_html__('Add to iCal Calendar', 'event_espresso') . '">';
+					$html .= ' <span class="dashicons dashicons-calendar"></span>';
+					$html .= '</a>';
+					break;
+				// links are just links that use the calendar dashicon
+				case 'icon':
+					$html .= '<a class="ee-ical-lnk" href="' . $URL . '" title="';
+					$html .= esc_html__('Add to iCal Calendar', 'event_espresso') . '">';
+					$html .= ' <span class="dashicons dashicons-calendar"></span>';
+					$html .= '</a>';
+					break;
+			}
+		}
+		return $html;
+	}
+
+
+	/**
+	 * @return void
+	 * @throws EE_Error
+	 * @throws ReflectionException
+	 */
+	public static function download_ics_file()
+	{
+		$request = self::getRequest();
+		if ($request->requestParamIsSet('ics_id')) {
+			$DTT_ID   = $request->getRequestParam('ics_id', 0, 'int');
+			$datetime = EEM_Datetime::instance()->get_one_by_ID($DTT_ID);
+			if ($datetime instanceof EE_Datetime) {
+				// get related event, venues, and event categories
+				$event = $datetime->event();
+				if ($event instanceof EE_Event) {
+					// get related category Term object and it's name
+					$category = $event->first_event_category();
+					if ($category instanceof EE_Term) {
+						$category = $category->name();
+					}
+					$location = '';
+					// get first related venue and convert to CSV string
+					$venue = $event->venues(['limit' => 1]);
+					if (is_array($venue) && ! empty($venue)) {
+						$venue = array_shift($venue);
+						if ($venue instanceof EE_Venue) {
+							$location = espresso_venue_raw_address('inline', $venue->ID(), false);
+						}
+					}
+
+					// Generate filename
+					$filename = $event->slug() . '-' . $datetime->start_date('Y-m-d') . '.ics';
+
+					// Check the datetime status has not been cancelled and set the ics value accordingly
+					$status = $datetime->get_active_status();
+					$status = $status === EE_Datetime::cancelled ? 'CANCELLED' : 'CONFIRMED';
+
+					// Create array of ics details, escape strings, convert timestamps to ics format, etc
+					$ics_data = [
+						'ORGANIZER_NAME' => EE_Registry::instance()->CFG->organization->name,
+						'UID'            => md5($event->name() . $event->ID() . $datetime->ID()),
+						'ORGANIZER'      => EE_Registry::instance()->CFG->organization->email,
+						'DTSTAMP'        => date(EED_Ical::iCal_datetime_format),
+						'LOCATION'       => $location,
+						'SUMMARY'        => $event->name(),
+						'DESCRIPTION'    => wp_strip_all_tags($event->description()),
+						'STATUS'         => $status,
+						'CATEGORIES'     => $category,
+						'URL;VALUE=URI'  => get_permalink($event->ID()),
+						'DTSTART'        => date(EED_Ical::iCal_datetime_format, $datetime->start()),
+						'DTEND'          => date(EED_Ical::iCal_datetime_format, $datetime->end()),
+					];
+
+					// Filter the values used within the ics output.
+					// NOTE - all values within ics_data will be escaped automatically.
+					$ics_data = apply_filters('FHEE__EED_Ical__download_ics_file_ics_data', $ics_data, $datetime);
+
+					// Escape all ics data
+					foreach ($ics_data as $key => $value) {
+						// Description is escaped differently from all all values
+						if ($key === 'DESCRIPTION') {
+							$ics_data[ $key ] = EED_Ical::_escape_ICal_description(wp_strip_all_tags($value));
+						} else {
+							$ics_data[ $key ] = EED_Ical::_escape_ICal_data($value);
+						}
+					}
+
+					// Pull the organizer name from ics_data and remove it from the array.
+					$organizer_name = isset($ics_data['ORGANIZER_NAME'])
+						? $ics_data['ORGANIZER_NAME']
+						: '';
+					unset($ics_data['ORGANIZER_NAME']);
+
+					// set headers
+					header('Content-type: text/calendar; charset=utf-8');
+					header('Content-Disposition: attachment; filename="' . $filename . '"');
+					header('Cache-Control: private, max-age=0, must-revalidate');
+					header('Pragma: public');
+					header('Content-Type: application/octet-stream');
+					header('Content-Type: application/force-download');
+					header('Cache-Control: no-cache, must-revalidate');
+					header('Content-Transfer-Encoding: binary');
+					header('Expires: Sat, 26 Jul 1997 05:00:00 GMT'); // past date
+					ini_set('zlib.output_compression', '0');
+					// echo the output
+					echo "BEGIN:VCALENDAR\r\n";
+					echo "VERSION:2.0\r\n";
+					echo "PRODID:-//{$organizer_name}//NONSGML PDA Calendar Version 1.0//EN\r\n";
+					echo "CALSCALE:GREGORIAN\r\n";
+					echo "BEGIN:VEVENT\r\n";
+
+					// Output all remaining values from ics_data.
+					foreach ($ics_data as $key => $value) {
+						echo wp_kses($key . ':' . $value, AllowedTags::getAllowedTags()) . "\r\n";
+					}
+
+					echo "END:VEVENT\r\n";
+					echo "END:VCALENDAR\r\n";
+				}
+			}
+		}
+		die();
+	}
+
+
+	/**
+	 *    _escape_ICal_data
+	 *
+	 * @param string $string
+	 * @return    string
+	 */
+	private static function _escape_ICal_data($string = '')
+	{
+		return preg_replace('/([\,;])/', '\\\$1', $string);
+	}
+
+
+	/**
+	 *    _escape_ICal_description
+	 *
+	 * @param string $description
+	 * @return    string
+	 */
+	private static function _escape_ICal_description($description = '')
+	{
+		// Escape special chars within the description
+		$description = EED_Ical::_escape_ICal_data($description);
+		// Remove line breaks and output in iCal format
+		return str_replace(["\r\n", "\n"], '\n', $description);
+	}
 }

Spacing +13 added lines, -13 removed lines

@@ -89,24 +89,24 @@ 
             switch ($iCal_type) {
                 // submit buttons appear as buttons and are very compatible with a theme's style
                 case 'submit':
-                    $html .= '<form id="download-iCal-frm-' . $datetime->ID();
-                    $html .= '" class="download-iCal-frm" action="' . $URL . '" method="post" >';
+                    $html .= '<form id="download-iCal-frm-'.$datetime->ID();
+                    $html .= '" class="download-iCal-frm" action="'.$URL.'" method="post" >';
                     $html .= '<input type="submit" class="ee-ical-sbmt" value="&#xf145;" title="';
-                    $html .= esc_html__('Add to iCal Calendar', 'event_espresso') . '"/>';
+                    $html .= esc_html__('Add to iCal Calendar', 'event_espresso').'"/>';
                     $html .= '</form>';
                     break;
                 // buttons are just links that have been styled to appear as buttons,
                 // but may not be blend with a theme as well as submit buttons
                 case 'button':
-                    $html .= '<a class="ee-ical-btn small ee-button ee-roundish" href="' . $URL;
-                    $html .= '" title="' . esc_html__('Add to iCal Calendar', 'event_espresso') . '">';
+                    $html .= '<a class="ee-ical-btn small ee-button ee-roundish" href="'.$URL;
+                    $html .= '" title="'.esc_html__('Add to iCal Calendar', 'event_espresso').'">';
                     $html .= ' <span class="dashicons dashicons-calendar"></span>';
                     $html .= '</a>';
                     break;
                 // links are just links that use the calendar dashicon
                 case 'icon':
-                    $html .= '<a class="ee-ical-lnk" href="' . $URL . '" title="';
-                    $html .= esc_html__('Add to iCal Calendar', 'event_espresso') . '">';
+                    $html .= '<a class="ee-ical-lnk" href="'.$URL.'" title="';
+                    $html .= esc_html__('Add to iCal Calendar', 'event_espresso').'">';
                     $html .= ' <span class="dashicons dashicons-calendar"></span>';
                     $html .= '</a>';
                     break;
@@ -147,7 +147,7 @@ 
                     }
 
                     // Generate filename
-                    $filename = $event->slug() . '-' . $datetime->start_date('Y-m-d') . '.ics';
+                    $filename = $event->slug().'-'.$datetime->start_date('Y-m-d').'.ics';
 
                     // Check the datetime status has not been cancelled and set the ics value accordingly
                     $status = $datetime->get_active_status();
@@ -156,7 +156,7 @@ 
                     // Create array of ics details, escape strings, convert timestamps to ics format, etc
                     $ics_data = [
                         'ORGANIZER_NAME' => EE_Registry::instance()->CFG->organization->name,
-                        'UID'            => md5($event->name() . $event->ID() . $datetime->ID()),
+                        'UID'            => md5($event->name().$event->ID().$datetime->ID()),
                         'ORGANIZER'      => EE_Registry::instance()->CFG->organization->email,
                         'DTSTAMP'        => date(EED_Ical::iCal_datetime_format),
                         'LOCATION'       => $location,
@@ -177,9 +177,9 @@ 
                     foreach ($ics_data as $key => $value) {
                         // Description is escaped differently from all all values
                         if ($key === 'DESCRIPTION') {
-                            $ics_data[ $key ] = EED_Ical::_escape_ICal_description(wp_strip_all_tags($value));
+                            $ics_data[$key] = EED_Ical::_escape_ICal_description(wp_strip_all_tags($value));
                         } else {
-                            $ics_data[ $key ] = EED_Ical::_escape_ICal_data($value);
+                            $ics_data[$key] = EED_Ical::_escape_ICal_data($value);
                         }
                     }
 
@@ -191,7 +191,7 @@ 
 
                     // set headers
                     header('Content-type: text/calendar; charset=utf-8');
-                    header('Content-Disposition: attachment; filename="' . $filename . '"');
+                    header('Content-Disposition: attachment; filename="'.$filename.'"');
                     header('Cache-Control: private, max-age=0, must-revalidate');
                     header('Pragma: public');
                     header('Content-Type: application/octet-stream');
@@ -209,7 +209,7 @@ 
 
                     // Output all remaining values from ics_data.
                     foreach ($ics_data as $key => $value) {
-                        echo wp_kses($key . ':' . $value, AllowedTags::getAllowedTags()) . "\r\n";
+                        echo wp_kses($key.':'.$value, AllowedTags::getAllowedTags())."\r\n";
                     }
 
                     echo "END:VEVENT\r\n";

modules/gateways/Invoice/lib/templates/invoice_body.template.php

Indentation +74 added lines, -74 removed lines

@@ -76,20 +76,20 @@ 
         </thead>
         <tbody>
         <?php
-        /**
-         * Recursive function for traversing all the sub-items of each line item
-         * and displaying them in the table
-         *
-         * @param EE_Line_Item $line_item
-         * @param boolean      $odd for indicating whether to style this line item as an 'odd' or 'even'
-         */
-        function ee_invoice_display_line_item(EE_Line_Item $line_item, $show_line_item_description, $odd = false)
-        {
-            switch ($line_item->type()) {
-                case EEM_Line_Item::type_total:
-                    foreach ($line_item->children() as $child_line_item) {
-                        ee_invoice_display_line_item($child_line_item, $show_line_item_description);
-                    } ?>
+		/**
+		 * Recursive function for traversing all the sub-items of each line item
+		 * and displaying them in the table
+		 *
+		 * @param EE_Line_Item $line_item
+		 * @param boolean      $odd for indicating whether to style this line item as an 'odd' or 'even'
+		 */
+		function ee_invoice_display_line_item(EE_Line_Item $line_item, $show_line_item_description, $odd = false)
+		{
+			switch ($line_item->type()) {
+				case EEM_Line_Item::type_total:
+					foreach ($line_item->children() as $child_line_item) {
+						ee_invoice_display_line_item($child_line_item, $show_line_item_description);
+					} ?>
                     <tr>
                         <td colspan="<?php echo ($show_line_item_description ? 5 : 4) ?>">
                             <hr>
@@ -101,50 +101,50 @@ 
                         <td class="total"><?php echo wp_kses($line_item->total_no_code(), AllowedTags::getAllowedTags()); ?></td>
                     </tr>
                     <?php
-                    break;
+					break;
 
 
-                case EEM_Line_Item::type_sub_total:
-                    foreach ($line_item->children() as $child_line_item) {
-                        // $odd = !$odd;
-                        ee_invoice_display_line_item($child_line_item, $show_line_item_description, $odd);
-                    } ?>
+				case EEM_Line_Item::type_sub_total:
+					foreach ($line_item->children() as $child_line_item) {
+						// $odd = !$odd;
+						ee_invoice_display_line_item($child_line_item, $show_line_item_description, $odd);
+					} ?>
                     <tr class="total_tr odd">
                         <td colspan="<?php echo ($show_line_item_description ? 2 : 1) ?>">&nbsp;</td>
                         <td colspan="2" class="total" id="total_currency">
                             <?php esc_html_e(
-                                'Sub-Total',
-                                'event_espresso'
-                            ); ?></td>
+								'Sub-Total',
+								'event_espresso'
+							); ?></td>
                         <td class="total"><?php echo wp_kses($line_item->total_no_code(), AllowedTags::getAllowedTags()); ?></td>
                     </tr>
                     <?php
-                    break;
+					break;
 
 
-                case EEM_Line_Item::type_tax_sub_total:
-                    foreach ($line_item->children() as $child_line_item) {
-                        $odd = ! $odd;
-                        ee_invoice_display_line_item($child_line_item, $show_line_item_description, $odd);
-                    } ?>
+				case EEM_Line_Item::type_tax_sub_total:
+					foreach ($line_item->children() as $child_line_item) {
+						$odd = ! $odd;
+						ee_invoice_display_line_item($child_line_item, $show_line_item_description, $odd);
+					} ?>
                     <tr class="total_tr odd">
                         <td colspan="<?php echo ($show_line_item_description ? 2 : 1) ?>">&nbsp;</td>
                         <td colspan="2" class="total" id="total_currency">
                             <?php esc_html_e(
-                                'Tax Total',
-                                'event_espresso'
-                            ); ?></td>
+								'Tax Total',
+								'event_espresso'
+							); ?></td>
                         <td class="total"><?php echo wp_kses($line_item->total_no_code(), AllowedTags::getAllowedTags()); ?></td>
                     </tr>
                     <?php
-                    break;
+					break;
 
 
-                case EEM_Line_Item::type_line_item:
-                    $subitems = $line_item->children();
-                    $has_subitems = count($subitems) > 1;
-                    if ($has_subitems) {
-                        ?>
+				case EEM_Line_Item::type_line_item:
+					$subitems = $line_item->children();
+					$has_subitems = count($subitems) > 1;
+					if ($has_subitems) {
+						?>
                         <tr class="item <?php echo ($odd ? 'odd' : ''); ?>">
                             <td class="item_l"><?php echo esc_html($line_item->name()) ?></td>
                             <?php if ($show_line_item_description) { ?>
@@ -155,18 +155,18 @@ 
                             <td class="item_c"><?php echo esc_html($line_item->unit_price_no_code()) ?></td>
 
                             <td class="item_r"> <?php echo wp_kses($line_item->total_no_code(), AllowedTags::getAllowedTags());
-                                echo ($line_item->is_taxable() ? '*' : ''); ?> </td>
+								echo ($line_item->is_taxable() ? '*' : ''); ?> </td>
                             <?php // <td class="item_l"><?php  $datetimes_strings = array(); foreach($datetimes as $datetime){ $datetimes_strings[]= $datetime->start_date_and_time();} echo implode(", ",$datetimes_strings);
-                            ?>
+							?>
                         </tr>
                         <?php
-                        if ($has_subitems) {
-                            foreach ($line_item->children() as $child_line_item) {
-                                ee_invoice_display_line_item($child_line_item, $show_line_item_description, $odd);
-                            }
-                        }
-                    } else {// no subitems - just show this line item
-                        ?>
+						if ($has_subitems) {
+							foreach ($line_item->children() as $child_line_item) {
+								ee_invoice_display_line_item($child_line_item, $show_line_item_description, $odd);
+							}
+						}
+					} else {// no subitems - just show this line item
+						?>
                         <tr class="item <?php echo ($odd ? 'odd' : ''); ?>">
                             <td class="item_l"><?php echo esc_html($line_item->name()); ?></td>
                             <?php if ($show_line_item_description) { ?>
@@ -175,15 +175,15 @@ 
                             <td class="item_l"><?php echo esc_html($line_item->quantity()); ?></td>
                             <td class="item_c"><?php echo wp_kses($line_item->unit_price_no_code(), AllowedTags::getAllowedTags()); ?></td>
                             <td class="item_r"> <?php echo wp_kses($line_item->total_no_code(), AllowedTags::getAllowedTags());
-                                echo ($line_item->is_taxable() ? '*' : ''); ?> </td>
+								echo ($line_item->is_taxable() ? '*' : ''); ?> </td>
                             <?php // <td class="item_l"><?php  $datetimes_strings = array(); foreach($datetimes as $datetime){ $datetimes_strings[]= $datetime->start_date_and_time();} echo implode(", ",$datetimes_strings);
-                            ?>
+							?>
                         </tr>
                     <?php }
 
-                    break;
-                case EEM_Line_Item::type_sub_line_item:
-                    ?>
+					break;
+				case EEM_Line_Item::type_sub_line_item:
+					?>
                     <tr class="item subitem-row">
                         <td class="item_l subitem"><?php echo esc_html($line_item->name()); ?></td>
                         <?php if ($show_line_item_description) { ?>
@@ -199,9 +199,9 @@ 
                         <td class="item_r"><?php echo wp_kses($line_item->total_no_code(), AllowedTags::getAllowedTags()); ?></td>
                     </tr>
                     <?php
-                    break;
-                case EEM_Line_Item::type_tax:
-                    ?>
+					break;
+				case EEM_Line_Item::type_tax:
+					?>
                     <tr class="item sub-item tax-total">
                     <td class="item_l"><?php echo esc_html($line_item->name()); ?></td>
                     <?php if ($show_line_item_description) { ?>
@@ -211,15 +211,15 @@ 
 
                     <td class="item_r"><?php echo wp_kses($line_item->total_no_code(), AllowedTags::getAllowedTags()); ?></td>
                     </tr><?php
-                    break;
-            }
-        }
+					break;
+			}
+		}
 
-        $c = false;
-        /* @var $transaction EE_Transaction */
-        $total_line_item = $transaction->total_line_item();
-        ee_invoice_display_line_item($total_line_item, $show_line_item_description);
-        ?>
+		$c = false;
+		/* @var $transaction EE_Transaction */
+		$total_line_item = $transaction->total_line_item();
+		ee_invoice_display_line_item($total_line_item, $show_line_item_description);
+		?>
         </tbody>
 
     </table>
@@ -238,11 +238,11 @@ 
         </thead>
         <tbody>
         <?php
-        $c = false;
-        if (! empty($payments)) {
-            foreach ($payments as $payment) {
-                /* @var $payment EE_Payment */
-                ?>
+		$c = false;
+		if (! empty($payments)) {
+			foreach ($payments as $payment) {
+				/* @var $payment EE_Payment */
+				?>
                 <tr class='item <?php echo(($c = ! $c) ? ' odd' : '') ?>'>
                     <td><?php $payment->e('PAY_gateway') ?></td>
                     <td><?php echo esc_html($payment->timestamp('D M j, Y')); ?></td>
@@ -252,17 +252,17 @@ 
                     <td class='item_r'><?php echo EEH_Template::format_currency($payment->amount()); ?></td>
                 </tr>
             <?php }
-        } else {
-            ?>
+		} else {
+			?>
             <tr class='item'>
                 <td class='aln-cntr' colspan=6>
                     <?php esc_html_e(
-                        "No approved payments have been received",
-                        'event_espresso'
-                    ) ?></td>
+						"No approved payments have been received",
+						'event_espresso'
+					) ?></td>
             </tr>
         <?php }
-        ?>
+		?>
         </tbody>
         <tfoot>
         <tr class='total_tr'>

modules/gateways/Invoice/lib/templates/receipt_body.template.php

Indentation +112 added lines, -112 removed lines

@@ -64,10 +64,10 @@ 
             <h3 class="section-title event-name">
                 <img class="icon" src="<?php echo EE_IMAGES_URL . 'calendar_year-24x24.png'; ?>">
                 <?php
-                esc_html_e(
-                    "Event Name:",
-                    "event_espresso"
-                ) ?>
+				esc_html_e(
+					"Event Name:",
+					"event_espresso"
+				) ?>
                 <span class="plain-text"><?php echo wp_kses($event->name(), AllowedTags::getAllowedTags()); ?></span>
                 <span class="small-text link">
                 [ <a href='<?php echo esc_url_raw($event->get_permalink()) ?>'><?php esc_html_e('view', 'event_espresso'); ?></a> ]
@@ -78,14 +78,14 @@ 
             <?php } ?>
             <ul class="tickets-per-event">
                 <?php
-                foreach ($ticket_line_items_per_event[ $event_id ] as $line_item_id => $line_item) {
-                    $ticket       = $line_item->ticket();
-                    $taxable_html = $ticket->taxable()
-                            ? '*'
-                            : '';
-                    $subitems     = $line_item->children();
-                    $ticket_uses  = $ticket->get_pretty('TKT_uses', esc_html__("any", "event_espresso"));
-                    ?>
+				foreach ($ticket_line_items_per_event[ $event_id ] as $line_item_id => $line_item) {
+					$ticket       = $line_item->ticket();
+					$taxable_html = $ticket->taxable()
+							? '*'
+							: '';
+					$subitems     = $line_item->children();
+					$ticket_uses  = $ticket->get_pretty('TKT_uses', esc_html__("any", "event_espresso"));
+					?>
                     <li class="event-ticket">
                         <div class="ticket-details">
                             <table class="invoice-amount">
@@ -94,10 +94,10 @@ 
                                     <th class="name-column"><?php esc_html_e("Ticket", "event_espresso"); ?></th>
                                     <th colspan="2" class="desc-column">
                                         <?php
-                                        esc_html_e(
-                                            "Description",
-                                            "event_espresso"
-                                        ); ?></th>
+										esc_html_e(
+											"Description",
+											"event_espresso"
+										); ?></th>
                                     <th class="number-column item_c"><?php esc_html_e("Quantity", "event_espresso"); ?></th>
                                     <th class="number-column item_c"><?php esc_html_e("Price", "event_espresso"); ?></th>
                                     <th class="number-column item_r"><?php esc_html_e("Total", "event_espresso"); ?></th>
@@ -105,20 +105,20 @@ 
                                 </thead>
                                 <tbody>
                                 <?php
-                                if (count($subitems) < 2) { ?>
+								if (count($subitems) < 2) { ?>
                                     <tr class="item">
                                         <td><?php echo esc_html($line_item->name() . $taxable_html); ?></td>
                                         <td colspan="2">
                                             <?php echo esc_html($line_item->desc()); ?>
                                             <p class="ticket-note">
                                                 <?php
-                                                echo sprintf(
-                                                    esc_html__(
-                                                        'This ticket can be used once at %s of the dates/times below.',
-                                                        'event_espresso'
-                                                    ),
-                                                    $ticket_uses
-                                                ); ?>
+												echo sprintf(
+													esc_html__(
+														'This ticket can be used once at %s of the dates/times below.',
+														'event_espresso'
+													),
+													$ticket_uses
+												); ?>
                                             </p>
                                         </td>
                                         <td class="item_c"><?php echo esc_html($line_item->quantity()); ?></td>
@@ -126,7 +126,7 @@ 
                                         <td class="item_r"><?php echo wp_kses($line_item->total_no_code(), AllowedTags::getAllowedTags());  ?></td>
                                     </tr>
                                     <?php
-                                } else { ?>
+								} else { ?>
                                     <tr class="item">
                                         <td class="aln-left">
                                             <?php echo esc_html($line_item->name() . $taxable_html); ?>
@@ -134,13 +134,13 @@ 
                                         <td colspan="2"><?php echo esc_html($line_item->desc()); ?>
                                             <p class="ticket-note">
                                                 <?php
-                                                echo sprintf(
-                                                    esc_html__(
-                                                        'This ticket can be used once at %s of the dates/times below.',
-                                                        'event_espresso'
-                                                    ),
-                                                    $ticket_uses
-                                                ); ?>
+												echo sprintf(
+													esc_html__(
+														'This ticket can be used once at %s of the dates/times below.',
+														'event_espresso'
+													),
+													$ticket_uses
+												); ?>
                                             </p>
                                         </td>
                                         <td class="item_c">
@@ -154,8 +154,8 @@ 
                                         </td>
                                     </tr>
                                     <?php
-                                    foreach ($subitems as $sub_line_item) {
-                                        $is_percent = $sub_line_item->is_percent(); ?>
+									foreach ($subitems as $sub_line_item) {
+										$is_percent = $sub_line_item->is_percent(); ?>
                                         <tr class="subitem-row">
                                             <td class="subitem">
                                                 <?php echo esc_html($sub_line_item->name()); ?>
@@ -166,14 +166,14 @@ 
                                             <td class="item_c">
                                             </td>
                                             <td class="item_c"><?php
-                                                echo ($is_percent
-                                                    ? $sub_line_item->percent() . "%"
-                                                    : $sub_line_item->unit_price_no_code()); ?>
+												echo ($is_percent
+													? $sub_line_item->percent() . "%"
+													: $sub_line_item->unit_price_no_code()); ?>
                                             </td>
                                             <td class="item_r"><?php echo wp_kses($sub_line_item->total_no_code(), AllowedTags::getAllowedTags()); ?></td>
                                         </tr>
                                         <?php
-                                    } ?>
+									} ?>
                                     <tr class="total_tr odd">
                                         <td colspan="4"></td>
                                         <td class="total" nowrap="nowrap">
@@ -184,7 +184,7 @@ 
                                         </td>
                                     </tr>
                                     <?php
-                                } ?>
+								} ?>
                                 </tbody>
                             </table>
 
@@ -195,49 +195,49 @@ 
                                     <h4 class="sub-section-title no-bottom-margin">
                                         <img class="icon" src="<?php echo esc_url_raw(EE_IMAGES_URL . 'clock-16x16.png'); ?>">
                                         <?php
-                                        echo _n(
-                                            "Date/Time:",
-                                            "Dates/Times:",
-                                            count($ticket->datetimes()),
-                                            "event_espresso"
-                                        ); ?></h4>
+										echo _n(
+											"Date/Time:",
+											"Dates/Times:",
+											count($ticket->datetimes()),
+											"event_espresso"
+										); ?></h4>
                                     <ul class="event-dates">
                                         <?php
-                                        foreach ($ticket->datetimes_ordered() as $datetime) {
-                                            /* @var $datetime EE_Datetime */ ?>
+										foreach ($ticket->datetimes_ordered() as $datetime) {
+											/* @var $datetime EE_Datetime */ ?>
                                             <li><?php
-                                                echo ($datetime->name()
-                                                    ? '<b>' . esc_html($datetime->name()) . ' </b>'
-                                                    : '');
-                                                echo sprintf(
-                                                    esc_html__("%s - %s (%s)", "event_espresso"),
-                                                    $datetime->start_date_and_time(),
-                                                    $datetime->end_date_and_time(),
-                                                    $datetime->get_timezone()
-                                                );
-                                                echo ($datetime->description()
-                                                    ? '<p class="ticket-note">' . wp_kses($datetime->description(), AllowedTags::getAllowedTags()) . '</p>'
-                                                    : ''); ?></li>
+												echo ($datetime->name()
+													? '<b>' . esc_html($datetime->name()) . ' </b>'
+													: '');
+												echo sprintf(
+													esc_html__("%s - %s (%s)", "event_espresso"),
+													$datetime->start_date_and_time(),
+													$datetime->end_date_and_time(),
+													$datetime->get_timezone()
+												);
+												echo ($datetime->description()
+													? '<p class="ticket-note">' . wp_kses($datetime->description(), AllowedTags::getAllowedTags()) . '</p>'
+													: ''); ?></li>
                                             <?php
-                                        } ?>
+										} ?>
                                     </ul>
                                 </div>
                                 <?php
-                                if ($event->venues()) { ?>
+								if ($event->venues()) { ?>
                                     <div class="ticket-place-details">
                                         <h4 class="sub-section-title no-bottom-margin">
                                             <img class="icon" src="<?php
-                                            echo esc_url_raw(EE_IMAGES_URL . 'location-pin-16x16.png'); ?>">
+											echo esc_url_raw(EE_IMAGES_URL . 'location-pin-16x16.png'); ?>">
                                             <?php
-                                            echo _n(
-                                                "Venue:",
-                                                "Venues:",
-                                                count($event->venues()),
-                                                "event_espresso"
-                                            ); ?></h4>
+											echo _n(
+												"Venue:",
+												"Venues:",
+												count($event->venues()),
+												"event_espresso"
+											); ?></h4>
                                         <ul class="event-venues">
                                             <?php
-                                            foreach ($event->venues() as $venue) { ?>
+											foreach ($event->venues() as $venue) { ?>
                                                 <li><?php echo esc_html($venue->name()) ?>
                                                     <span class="small-text">
                                                 [
@@ -248,18 +248,18 @@ 
                                             </span>
                                                 </li>
                                                 <?php
-                                            } ?>
+											} ?>
                                         </ul>
                                     </div>
                                     <?php
-                                } ?>
+								} ?>
                             </div>
                             <div class="ticket-registrations-area">
                                 <h4 class="sub-section-title">
                                     <img class="icon" src="<?php
-                                    echo esc_url_raw(EE_IMAGES_URL . 'users-16x16.png'); ?>">
+									echo esc_url_raw(EE_IMAGES_URL . 'users-16x16.png'); ?>">
                                     <?php
-                                    echo esc_html__("Registration Details", "event_espresso"); ?>
+									echo esc_html__("Registration Details", "event_espresso"); ?>
                                     <span class="small-text link">[
                                 <a class="print_button noPrint" href="<?php echo esc_url_raw($edit_reg_info_url); ?>">
                                     <?php esc_html_e('edit', 'event_espresso'); ?>
@@ -269,12 +269,12 @@ 
                                 </h4>
                                 <ul class="ticket-registrations-list">
                                     <?php
-                                    foreach ($registrations_per_line_item[ $line_item_id ] as $registration) {
-                                        /* @var $registration EE_Registration */
-                                        $attendee = $registration->attendee();
-                                        $answers  = $registration->answers(
-                                            ['order_by' => ['Question.Question_Group_Question.QGQ_order' => 'ASC']]
-                                        ); ?>
+									foreach ($registrations_per_line_item[ $line_item_id ] as $registration) {
+										/* @var $registration EE_Registration */
+										$attendee = $registration->attendee();
+										$answers  = $registration->answers(
+											['order_by' => ['Question.Question_Group_Question.QGQ_order' => 'ASC']]
+										); ?>
                                         <li class="ticket-registration">
                                             <table class="registration-details">
                                                 <tr class="odd">
@@ -289,7 +289,7 @@ 
                                                     </td>
                                                 </tr>
                                                 <?php
-                                                foreach ($event->question_groups() as $question_group) { ?>
+												foreach ($event->question_groups() as $question_group) { ?>
                                                     <tr>
                                                         <th>
                                                             <?php $question_group->e('QSG_name'); ?>
@@ -297,12 +297,12 @@ 
                                                         <td></td>
                                                     </tr>
                                                     <?php $has_personal_info = false;
-                                                    foreach ($question_group->questions() as $question) {
-                                                        if (in_array($question->system_ID(), $questions_to_skip)) {
-                                                            $has_personal_info = true;
-                                                            continue;
-                                                        }
-                                                        ?>
+													foreach ($question_group->questions() as $question) {
+														if (in_array($question->system_ID(), $questions_to_skip)) {
+															$has_personal_info = true;
+															continue;
+														}
+														?>
                                                         <tr>
                                                             <th>
                                                                 <?php echo wp_kses($question->display_text(), AllowedTags::getAllowedTags()); ?>
@@ -312,26 +312,26 @@ 
                                                             </td>
                                                         </tr>
                                                     <?php }
-                                                    if ($has_personal_info) { ?>
+													if ($has_personal_info) { ?>
                                                         <tr>
                                                             <th><?php esc_html_e('Attendee', 'event_espresso'); ?></th>
                                                             <td>
                                                                 <?php
-                                                                echo sprintf(
-                                                                    esc_html__('%s (%s)', "event_espresso"),
-                                                                    esc_html($attendee->full_name()),
-                                                                    sanitize_email($attendee->email())
-                                                                ) ?>
+																echo sprintf(
+																	esc_html__('%s (%s)', "event_espresso"),
+																	esc_html($attendee->full_name()),
+																	sanitize_email($attendee->email())
+																) ?>
                                                             </td>
                                                         </tr>
                                                         <?php
-                                                    }
-                                                }
-                                                ?>
+													}
+												}
+												?>
                                             </table>
                                         </li>
                                         <?php
-                                    } ?>
+									} ?>
                                 </ul>
                             </div>
                         </div>
@@ -375,10 +375,10 @@ 
     <div class="grand-total-dv">
         <h2 class="grand-total">
             <?php
-            printf(
-                esc_html__("Grand Total: %s", "event_espresso"),
-                EEH_Template::format_currency($total_cost)
-            ); ?>
+			printf(
+				esc_html__("Grand Total: %s", "event_espresso"),
+				EEH_Template::format_currency($total_cost)
+			); ?>
         </h2>
     </div>
     <div class="payment-dv">
@@ -397,13 +397,13 @@ 
             </thead>
             <tbody>
             <?php
-            $c = false;
-            if (! empty($payments)) {
-                foreach ($payments as $payment) {
-                    /* @var $payment EE_Payment */ ?>
+			$c = false;
+			if (! empty($payments)) {
+				foreach ($payments as $payment) {
+					/* @var $payment EE_Payment */ ?>
                     <tr class='item <?php echo(($c = ! $c)
-                        ? ' odd'
-                        : '') ?>'>
+						? ' odd'
+						: '') ?>'>
                         <td><?php $payment->e('PAY_gateway') ?></td>
                         <td><?php echo esc_html($payment->timestamp()); ?></td>
                         <td><?php $payment->e('PAY_txn_id_chq_nmbr') ?></td>
@@ -412,14 +412,14 @@ 
                         <td class='item_r'><?php echo wp_kses($payment->amount_no_code(), AllowedTags::getAllowedTags()); ?></td>
                     </tr>
                 <?php }
-            } else { ?>
+			} else { ?>
                 <tr class='item'>
                     <td class='aln-cntr' colspan="6">
                         <?php
-                        esc_html_e(
-                            "No approved payments have been received.",
-                            'event_espresso'
-                        ) ?>
+						esc_html_e(
+							"No approved payments have been received.",
+							'event_espresso'
+						) ?>
                     </td>
                 </tr>
             <?php } ?>
@@ -455,7 +455,7 @@ 
             <?php if ($venues_for_events) { ?>
             <h2>
                 <?php
-                echo _n("Venue Details:", "Venues Details:", count($venues_for_events), "event_espresso"); ?>
+				echo _n("Venue Details:", "Venues Details:", count($venues_for_events), "event_espresso"); ?>
             </h2>
             <table class="venue-list">
                 <?php foreach ($venues_for_events as $venue) { ?>