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<?php |
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/** |
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* Give Blank Slate Class |
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* |
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* @package Give |
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* @subpackage Admin |
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* @copyright Copyright (c) 2017, WordImpress |
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* @license http://opensource.org/licenses/gpl-2.0.php GNU Public License |
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* @since 1.8.13 |
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*/ |
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if ( ! defined( 'ABSPATH' ) ) { |
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exit; |
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} |
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class Give_Blank_Slate { |
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/** |
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* The current screen ID. |
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* |
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* @since 1.8.13 |
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* @var string |
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* @access public |
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*/ |
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public $screen = ''; |
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/** |
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* Whether at least one donation form exists. |
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* |
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* @since 1.8.13 |
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* @var bool |
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* @access private |
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*/ |
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private $form = false; |
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/** |
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* Whether at least one donation exists. |
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* |
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* @since 1.8.13 |
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* @var bool |
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* @access private |
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*/ |
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private $donation = false; |
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/** |
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* Whether at least one donor exists. |
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* |
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* @since 1.8.13 |
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* @var bool |
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* @access private |
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*/ |
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private $donor = false; |
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/** |
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* The content of the blank slate panel. |
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* |
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* @since 1.8.13 |
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* @var bool |
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* @access private |
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*/ |
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private $content = array(); |
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/** |
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* Constructs the Give_Blank_Slate class. |
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* |
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* @since 1.8.13 |
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*/ |
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public function __construct() { |
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$this->screen = get_current_screen()->id; |
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} |
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/** |
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* Initializes the class and hooks into WordPress. |
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* |
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* @since 1.8.13 |
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*/ |
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public function init() { |
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// Bail early if screen cannot be detected. |
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if ( empty( $this->screen ) ) { |
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return null; |
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} |
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$content = array(); |
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// Define content and hook into the appropriate action. |
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switch ( $this->screen ) { |
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// Forms screen. |
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case 'edit-give_forms': |
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$this->form = $this->post_exists( 'give_forms' ); |
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if ( $this->form ) { |
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// Form exists. Bail out. |
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return false; |
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} else { |
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// No forms exist. |
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$content = $this->get_content( 'no_forms' ); |
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} |
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add_action( 'manage_posts_extra_tablenav', array( $this, 'render' ) ); |
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break; |
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// Donations screen. |
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case 'give_forms_page_give-payment-history': |
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$this->form = $this->post_exists( 'give_forms' ); |
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$this->donation = $this->post_exists( 'give_payment' ); |
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if ( $this->donation ) { |
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// Donation exists. Bail out. |
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return false; |
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} elseif ( ! $this->form ) { |
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// No forms and no donations exist. |
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$content = $this->get_content( 'no_donations_or_forms' ); |
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} else { |
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// No donations exist but a form does exist. |
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$content = $this->get_content( 'no_donations' ); |
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} |
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add_action( 'give_payments_page_bottom', array( $this, 'render' ) ); |
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break; |
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// Donors screen. |
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case 'give_forms_page_give-donors': |
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$this->form = $this->post_exists( 'give_forms' ); |
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$this->donor = $this->donor_exists(); |
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if ( $this->donor ) { |
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// Donor exists. Bail out. |
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return false; |
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} elseif ( ! $this->form ) { |
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// No forms and no donors exist. |
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$content = $this->get_content( 'no_donors_or_forms' ); |
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} else { |
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// No donors exist but a form does exist. |
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$content = $this->get_content( 'no_donors' ); |
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} |
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add_action( 'give_donors_table_bottom', array( $this, 'render' ) ); |
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break; |
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default: |
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return null; |
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} |
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$this->content = $content; |
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// Hide non-essential UI elements. |
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add_action( 'admin_head', array( $this, 'hide_ui' ) ); |
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} |
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/** |
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* Renders the blank slate message. |
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* |
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* @since 1.8.13 |
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* |
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* @param string $which The location of the list table hook: 'top' or 'bottom'. |
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*/ |
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public function render( $which = 'bottom') { |
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// Bail out to prevent content from rendering twice. |
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if ( 'top' === $which ) { |
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return null; |
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} |
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$screen = $this->screen; |
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/** |
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* Filters the content of the blank slate. |
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* |
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* @since 1.8.13 |
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* |
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* @param array $content { |
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* Array of blank slate content. |
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* |
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* @type string $image_url URL of the blank slate image. |
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* @type string $image_alt Image alt text. |
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* @type string $heading Heading text. |
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* @type string $message Body copy. |
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* @type string $cta_text Call to action text. |
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* @type string $cta_link Call to action URL. |
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* @type string $help Help text. |
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* } |
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* |
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* @param string $screen The current screen ID. |
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*/ |
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$content = apply_filters( 'give_blank_slate_content', $this->content, $screen ); |
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$template_path = GIVE_PLUGIN_DIR . 'includes/admin/views/blank-slate.php'; |
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include $template_path; |
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} |
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/** |
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* Hides non-essential UI elements when blank slate content is on screen. |
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* |
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* @since 1.8.13 |
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*/ |
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function hide_ui() { |
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echo '<style type="text/css">.page-title-action, .give-filters, .search-box, .subsubsub, .wp-list-table, .tablenav.top, .give_forms_page_give-payment-history .tablenav.bottom, .give_forms_page_give-donors .tablenav.bottom, .tablenav-pages { display: none; }</style>'; |
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} |
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/** |
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* Determines if at least one post of a given post type exists. |
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* |
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* @since 1.8.13 |
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* |
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* @param string $post_type Post type used in the query. |
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* @return bool True if post exists, otherwise false. |
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*/ |
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private function post_exists( $post_type ) { |
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// Attempt to get a single post of the post type. |
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$query = new WP_Query( array( |
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'post_type' => $post_type, |
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'posts_per_page' => 1, |
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'no_found_rows' => false, |
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'update_post_meta_cache' => false, |
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'update_post_term_cache' => false, |
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'fields' => 'ids', |
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'post_status' => array( 'any', 'trash' ), |
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) ); |
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return $query->have_posts(); |
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} |
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/** |
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* Determines if at least one donor exists. |
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* |
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* @since 1.8.13 |
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* |
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* @return bool True if donor exists, otherwise false. |
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*/ |
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private function donor_exists() { |
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$donors = Give()->donors->get_donors( array( 'number' => 1 ) ); |
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return ! empty( $donors ); |
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} |
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/** |
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* Gets the content of a blank slate message based on provided context. |
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* |
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* @since 1.8.13 |
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* |
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* @param string $context The key used to determine which content is returned. |
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* @return array Blank slate content. |
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*/ |
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private function get_content( $context ) { |
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// Define default content. |
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$defaults = array( |
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'image_url' => GIVE_PLUGIN_URL . 'assets/images/svg/give-icon-full-circle.svg', |
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'image_alt' => __( 'Give Icon', 'give' ), |
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'heading' => __( 'No donation forms found.', 'give' ), |
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'message' => __( 'The first step towards accepting online donations is to create a form.', 'give' ), |
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'cta_text' => __( 'Create Donation Form', 'give' ), |
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'cta_link' => admin_url( 'post-new.php?post_type=give_forms' ), |
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'help' => sprintf( |
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__( 'Need help? Get started with %sGive 101%s.', 'wbpr' ), |
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'<a href="http://docs.givewp.com/give101/" target="_blank">', |
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'</a>' |
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), |
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); |
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// Define contextual content. |
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$content = array( |
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'no_donations_or_forms' => array( |
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'heading' => __( 'No donations found.', 'give' ), |
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'message' => __( 'Your donation history will appear here, but first, you need a donation form!', 'give' ), |
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), |
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'no_donations' => array( |
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'heading' => __( 'No donations found.', 'give' ), |
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'message' => __( 'When your first donation arrives, a record of the donation will appear here.', 'give' ), |
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'cta_text' => __( 'View All Forms', 'give' ), |
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'cta_link' => admin_url( 'edit.php?post_type=give_forms' ), |
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'help' => sprintf( |
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__( 'Need help? Learn more about %sDonations%s.', 'wbpr' ), |
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'<a href="http://docs.givewp.com/core-donations/">', |
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'</a>' |
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), |
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), |
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'no_donors_or_forms' => array( |
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'heading' => __( 'No donors found.', 'give' ), |
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'message' => __( 'Your donor history will appear here, but first, you need a donation form!', 'give' ), |
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), |
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'no_donors' => array( |
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'heading' => __( 'No donors found.', 'give' ), |
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'message' => __( 'When your first donation arrives, the donor will appear here.', 'give' ), |
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'cta_text' => __( 'View All Forms', 'give' ), |
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'cta_link' => admin_url( 'edit.php?post_type=give_forms' ), |
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'help' => sprintf( |
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__( 'Need help? Learn more about %sDonors%s.', 'wbpr' ), |
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'<a href="http://docs.givewp.com/core-donors/">', |
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'</a>' |
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), |
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), |
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); |
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if ( isset( $content[ $context ] ) ) { |
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// Merge contextual content with defaults. |
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return wp_parse_args( $content[ $context ], $defaults ); |
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} else { |
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// Return defaults if context is undefined. |
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return $defaults; |
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} |
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} |
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} |
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This check looks for variable assignements that are either overwritten by other assignments or where the variable is not used subsequently.
Both the
$myVar
assignment in line 1 and the$higher
assignment in line 2 are dead. The first because$myVar
is never used and the second because$higher
is always overwritten for every possible time line.