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<?php |
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/** |
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* Base class for all Pages. |
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* |
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* @since 5.5.4 |
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* @author Sudar |
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* @package BulkDelete\Base\Page |
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*/ |
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defined( 'ABSPATH' ) || exit; // Exit if accessed directly |
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/** |
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* Base class for Pages. |
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* |
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* @abstract |
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* @since 5.5.4 |
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*/ |
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abstract class BD_Base_Page { |
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/** |
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* @var string Page Slug. |
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*/ |
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protected $page_slug; |
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/** |
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* @var string Menu action. |
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*/ |
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protected $menu_action = 'bd_after_primary_menus'; |
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/** |
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* @var string Minimum capability needed for viewing this page. |
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*/ |
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protected $capability = 'manage_options'; |
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/** |
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* @var bool Whether sidebar is needed or not. |
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*/ |
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protected $render_sidebar = true; |
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/** |
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* @var string The screen variable for this page. |
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*/ |
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protected $screen; |
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/** |
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* @var array Labels used in this page. |
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*/ |
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protected $label = array(); |
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/** |
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* @var array Messages shown to the user. |
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*/ |
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protected $messages = array(); |
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/** |
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* @var array Actions used in this page. |
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*/ |
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protected $actions = array(); |
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/** |
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* Initialize and setup variables. |
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* |
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* @since 5.5.4 |
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* @abstract |
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* @return void |
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*/ |
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abstract protected function initialize(); |
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/** |
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* Render body content. |
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* |
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* @since 5.5.4 |
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* @abstract |
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*/ |
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abstract protected function render_body(); |
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/** |
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* Use `factory()` method to create instance of this class. |
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* Don't create instances directly |
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* |
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* @since 5.5.4 |
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* |
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* @see factory() |
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*/ |
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public function __construct() { |
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$this->setup(); |
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} |
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/** |
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* Setup the module. |
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* |
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* @since 5.5.4 |
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*/ |
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protected function setup() { |
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$this->initialize(); |
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$this->setup_hooks(); |
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} |
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/** |
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* Setup hooks. |
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* |
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* @since 5.5.4 |
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*/ |
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protected function setup_hooks() { |
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add_action( $this->menu_action, array( $this, 'add_menu' ) ); |
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add_action( "bd_admin_footer_for_{$this->page_slug}", array( $this, 'modify_admin_footer' ) ); |
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add_filter( 'bd_action_nonce_check', array( $this, 'nonce_check' ), 10, 2 ); |
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add_filter( 'bd_admin_help_tabs', array( $this, 'render_help_tab' ), 10, 2 ); |
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} |
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/** |
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* Add menu. |
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* |
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* @since 5.5.4 |
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*/ |
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public function add_menu() { |
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$bd = BULK_DELETE(); |
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$this->screen = add_submenu_page( |
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Bulk_Delete::POSTS_PAGE_SLUG, |
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$this->label['page_title'], |
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$this->label['menu_title'], |
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$this->capability, |
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$this->page_slug, |
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array( $this, 'render_page' ) |
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); |
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} |
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/** |
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* Check for nonce before executing the action. |
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* |
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* @since 5.5.4 |
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* @param bool $result The current result. |
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* @param string $action Action name. |
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*/ |
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public function nonce_check( $result, $action ) { |
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if ( in_array( $action, $this->actions ) ) { |
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if ( check_admin_referer( "bd-{$this->page_slug}", "bd-{$this->page_slug}-nonce" ) ) { |
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return true; |
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} |
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} |
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return $result; |
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} |
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/** |
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* Modify help tabs for the current page. |
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* |
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* @since 5.5.4 |
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* @param array $help_tabs Current list of help tabs. |
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* @param string $screen Current screen name. |
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* @return array Modified list of help tabs. |
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*/ |
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public function render_help_tab( $help_tabs, $screen ) { |
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if ( $this->screen == $screen ) { |
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$help_tabs = $this->add_help_tab( $help_tabs ); |
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} |
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return $help_tabs; |
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} |
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/** |
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* Add help tabs. |
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* Help tabs can be added by overriding this function in the child class. |
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* |
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* @since 5.5.4 |
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* @param array $help_tabs Current list of help tabs. |
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* @return array List of help tabs. |
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*/ |
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protected function add_help_tab( $help_tabs ) { |
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return $help_tabs; |
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} |
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/** |
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* Render the page. |
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* |
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* @since 5.5.4 |
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*/ |
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public function render_page() { |
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?> |
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<div class="wrap"> |
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<h2><?php echo $this->label['page_title'];?></h2> |
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<?php settings_errors(); ?> |
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<form method = "post"> |
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<?php $this->render_nonce_fields(); ?> |
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<div id = "poststuff"> |
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<div id="post-body" class="metabox-holder columns-2"> |
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<?php $this->render_header(); ?> |
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<div id="postbox-container-2" class="postbox-container"> |
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<?php $this->render_body(); ?> |
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</div> <!-- #postbox-container-2 --> |
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</div> <!-- #post-body --> |
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</div><!-- #poststuff --> |
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</form> |
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</div><!-- .wrap --> |
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<?php |
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$this->render_footer(); |
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} |
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/** |
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* Print nonce fields. |
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* |
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* @since 5.5.4 |
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*/ |
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protected function render_nonce_fields() { |
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wp_nonce_field( "bd-{$this->page_slug}", "bd-{$this->page_slug}-nonce" ); |
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} |
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/** |
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* Render header for the page. |
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* |
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* If sidebar is enabled, then it is rendered as well. |
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* |
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* @since 5.5.4 |
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*/ |
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protected function render_header() { |
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?> |
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<div class="notice notice-warning"> |
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<p><strong><?php echo $this->messages['warning_message']; ?></strong></p> |
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</div> |
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<?php |
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if ( $this->render_sidebar ) { |
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bd_render_sidebar_iframe(); |
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} |
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} |
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/** |
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* Render footer. |
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* |
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* @since 5.5.4 |
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*/ |
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protected function render_footer() { |
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/** |
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* Runs just before displaying the footer text in the admin page. |
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* |
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* This action is primarily for adding extra content in the footer of admin page. |
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* |
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* @since 5.5.4 |
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*/ |
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do_action( "bd_admin_footer_for_{$this->page_slug}" ); |
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} |
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/** |
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* Modify admin footer in Bulk Delete plugin pages. |
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*/ |
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public function modify_admin_footer() { |
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add_filter( 'admin_footer_text', 'bd_add_rating_link' ); |
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} |
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/** |
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* Getter for screen. |
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* |
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* @return string Current value of screen |
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*/ |
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public function get_screen() { |
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return $this->screen; |
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} |
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/** |
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* Getter for page_slug. |
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* |
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* @return string Current value of page_slug |
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*/ |
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public function get_page_slug() { |
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return $this->page_slug; |
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} |
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} |
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?> |
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For interface and abstract methods, it is impossible to infer the return type from the immediate code. In these cases, it is generally advisible to explicitly annotate these methods with a
@return
doc comment to communicate to implementors of these methods what they are expected to return.