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<?php |
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/** |
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* Gamajo Dashboard Glancer |
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* |
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* @package Gamajo_Dashboard_Glancer |
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* @author Gary Jones |
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* @link http://gamajo.com/dashboard-glancer |
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* @copyright 2013 Gary Jones, Gamajo Tech |
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* @license GPL-2.0+ |
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* @version 1.0.3 |
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*/ |
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/** |
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* Easily add items to the At a Glance Dashboard widget in WordPress 3.8+. |
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* |
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* @package Gamajo_Dashboard_Glancer |
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* @author Gary Jones |
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*/ |
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class Gamajo_Dashboard_Glancer { |
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/** |
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* Hold all of the items to show. |
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* |
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* @since 1.0.0 |
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* |
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* @var array |
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*/ |
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protected $items; |
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/** |
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* Automatically show any registered items. |
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* |
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* With this, there's no need to explicitly call show() during the |
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* `dashboard_glance_items` hook, and items can be registered at any time |
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* before `dashboard_glance_items` priority 20 (including on earlier hooks). |
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* |
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* @since 1.0.0 |
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*/ |
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public function __construct() { |
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add_action( 'dashboard_glance_items', array( $this, 'show' ), 20 ); |
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add_action( 'admin_enqueue_scripts', array( $this, 'dashboard_css' ) ); |
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} |
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/** |
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* Register one or more post type items to be shown on the dashboard widget. |
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* |
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* @since 1.0.0 |
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* |
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* @param array|string $post_types Post type name, or array of post type names. |
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* @param array|string $statuses Optional. Post status or array of |
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* different post type statuses. Default is |
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* `publish`. |
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* @return null Return early if action hook has already passed, or no valid |
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* post types were given. |
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*/ |
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public function add( $post_types, $statuses = 'publish' ) { |
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// If relevant output action hook has already passed, then no point in proceeding. |
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if ( did_action( 'dashboard_glance_items' ) ) { |
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_doing_it_wrong( __CLASS__, 'Trying to add At a Glance items to dashboard widget afterhook already fired', '1.0.0' ); |
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return; |
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} |
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$post_types = $this->unset_invalid_post_types( (array) $post_types ); |
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// If all given post types were invalid, bail now. |
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if ( ! $post_types ) { |
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return; |
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} |
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// Register each combination of given post type and status. |
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foreach ( $post_types as $post_type ) { |
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foreach ( (array) $statuses as $status ) { |
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$this->items[] = array( |
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'type' => $post_type, |
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'status' => $status, // No checks yet to see if status is valid. |
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); |
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} |
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} |
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} |
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/** |
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* Show the items on the dashboard widget. |
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* |
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* @since 1.0.0 |
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*/ |
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public function show() { |
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foreach ( $this->items as $item ) { |
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echo wp_kses_post( $this->get_single_item( $item ) ); |
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} |
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// Reset items, so items aren't shown again if show() is re-called. |
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unset( $this->items ); |
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} |
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/** |
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* Check one or more post types to see if they are valid. |
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* |
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* @since 1.0.0 |
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* |
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* @param array $post_types Each of the post types to check. |
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* @return array List of the given post types that are valid. |
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*/ |
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protected function unset_invalid_post_types( array $post_types ) { |
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foreach ( $post_types as $index => $post_type ) { |
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$post_type_object = get_post_type_object( $post_type ); |
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if ( is_null( $post_type_object ) ) { |
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unset( $post_types[ $index ] ); |
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} |
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} |
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return $post_types; |
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} |
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/** |
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* Build and return the data and markup for a single item. |
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* |
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* If the item count is zero, return an empty string, to avoid visual clutter. |
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* |
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* @since 1.0.0 |
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* |
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* @param array $item Registered item. |
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* @return string Markup, or empty string if item count is zero. |
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*/ |
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View Code Duplication |
protected function get_single_item( array $item ) { |
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$num_posts = wp_count_posts( $item['type'] ); |
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$count = (int) $num_posts->{$item['status']}; |
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if ( ! $count ) { |
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return ''; |
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} |
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$href = $this->get_link_url( $item ); |
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$text = number_format_i18n( $count ) . ' ' . $this->get_label( $item, $count ); |
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$text = $this->maybe_link( $text, $href ); |
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return $this->get_markup( $text, $item['type'] ); |
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} |
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/** |
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* Get the singular or plural label for an item. |
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* |
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* @since 1.0.0 |
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* |
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* @param array $item Registered item. |
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* @param int $count Number of items present in WP. |
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* @return string |
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*/ |
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protected function get_label( array $item, $count ) { |
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$post_type_object = get_post_type_object( $item['type'] ); |
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$labels = $post_type_object->labels; |
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$label = 1 === $count ? $labels->singular_name : $labels->name; |
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// Append status for non-publish statuses for disambiguation. |
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if ( 'publish' !== $item['status'] ) { |
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$label .= ' (' . $item['status'] . ')'; |
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} |
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return $label; |
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} |
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/** |
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* Build the URL that linked items use. |
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* |
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* @since 1.0.0 |
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* |
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* @param array $item Registered item. |
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* @return string Admin URL to view the entries of the given post type with the given status |
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*/ |
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public function get_link_url( array $item ) { |
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return 'edit.php?post_status=' . $item['status'] . '&post_type=' . $item['type']; |
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} |
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/** |
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* Wrap a glance item in a link, if the current user can edit posts. |
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* |
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* @since 1.0.0 |
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* |
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* @param string $text Text to potentially wrap in a link. |
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* @param string $href Link target. |
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* @return string Text wrapped in a link if current user can edit posts, or original text otherwise. |
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*/ |
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protected function maybe_link( $text, $href ) { |
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if ( current_user_can( 'edit_posts' ) ) { |
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return '<a href="' . esc_url( $href ) . '">' . esc_html( $text ) . '</a>'; |
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} |
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return '<span>' . esc_html( $text ) . '</span>'; |
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} |
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/** |
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* Wrap number and text within list item markup. |
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* |
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* The extra work for populating classes is to provide dashicons support. |
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* |
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* @since 1.0.0 |
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* |
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* @param string $text Text to display. May be wrapped in a link. |
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* @param string $post_type Post type. |
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* @return string Markup for list item. |
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*/ |
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protected function get_markup( $text, $post_type ) { |
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$class = ''; |
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$classes[] = $post_type . '-count'; |
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$post_type_object = get_post_type_object( $post_type ); |
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$menu_icon = isset( $post_type_object->menu_icon ) ? $post_type_object->menu_icon : null; |
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if ( 0 === strpos( $menu_icon, 'dashicons-' ) ) { |
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$classes[] = 'dashicons-before'; |
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$classes[] = $menu_icon; |
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} |
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$class = join( ' ', sanitize_html_class( $classes ) ); |
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return '<li class="' . esc_attr( $class ) . '">' . wp_kses_post( $text ) . '</li>' . "\n"; |
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} |
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/** |
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* Add post types icon styling to Dashboard page. |
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* |
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* To override the overly-specific core styles, we apply styles to ignore |
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* the default circle, and with the classes added to the list item (not |
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* anchor), get dashicons showing there instead. |
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* |
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* @since 1.1.0 |
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* |
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* @return null Return early if style already added, or the Dashboard page. |
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*/ |
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public function dashboard_css() { |
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static $added_style; |
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if ( $added_style ) { |
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return; |
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} |
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$screen = get_current_screen(); |
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if ( ! in_array( $screen->base, array( 'dashboard' ), true ) ) { |
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return; |
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} |
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// Remove default circle, and style dashicons we add via classes. |
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echo '<style type="text/css">#dashboard_right_now li.dashicons-before a:before, #dashboard_right_now li.dashicons span:before {content: none;}#dashboard_right_now li.dashicons-before:before {color: #82878c;margin: 0 5px 0 0;}</style>'; |
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$added_style = true; |
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} |
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} |
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This check marks implicit conversions of arrays to boolean values in a comparison. While in PHP an empty array is considered to be equal (but not identical) to false, this is not always apparent.
Consider making the comparison explicit by using
empty(..)or! empty(...)instead.