141 lines
3.3 KiB
PHP
141 lines
3.3 KiB
PHP
<?php
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/**
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* Widget API: WP_Widget_Factory class
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*
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* @package WordPress
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* @subpackage Widgets
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* @since 4.4.0
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*/
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/**
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* Singleton that registers and instantiates WP_Widget classes.
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*
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* @since 2.8.0
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* @since 4.4.0 Moved to its own file from wp-includes/widgets.php
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*/
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#[AllowDynamicProperties]
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class WP_Widget_Factory {
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/**
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* Widgets array.
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*
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* @since 2.8.0
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* @var array
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*/
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public $widgets = array();
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/**
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* PHP5 constructor.
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*
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* @since 4.3.0
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*/
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public function __construct() {
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add_action( 'widgets_init', array( $this, '_register_widgets' ), 100 );
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}
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/**
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* PHP4 constructor.
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*
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* @since 2.8.0
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* @deprecated 4.3.0 Use __construct() instead.
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*
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* @see WP_Widget_Factory::__construct()
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*/
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public function WP_Widget_Factory() {
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_deprecated_constructor( 'WP_Widget_Factory', '4.3.0' );
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self::__construct();
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}
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/**
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* Registers a widget subclass.
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*
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* @since 2.8.0
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* @since 4.6.0 Updated the `$widget` parameter to also accept a WP_Widget instance object
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* instead of simply a `WP_Widget` subclass name.
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*
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* @param string|WP_Widget $widget Either the name of a `WP_Widget` subclass or an instance of a `WP_Widget` subclass.
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*/
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public function register( $widget ) {
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if ( $widget instanceof WP_Widget ) {
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$this->widgets[ spl_object_hash( $widget ) ] = $widget;
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} else {
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$this->widgets[ $widget ] = new $widget();
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}
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}
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/**
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* Un-registers a widget subclass.
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*
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* @since 2.8.0
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* @since 4.6.0 Updated the `$widget` parameter to also accept a WP_Widget instance object
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* instead of simply a `WP_Widget` subclass name.
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*
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* @param string|WP_Widget $widget Either the name of a `WP_Widget` subclass or an instance of a `WP_Widget` subclass.
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*/
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public function unregister( $widget ) {
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if ( $widget instanceof WP_Widget ) {
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unset( $this->widgets[ spl_object_hash( $widget ) ] );
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} else {
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unset( $this->widgets[ $widget ] );
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}
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}
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/**
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* Serves as a utility method for adding widgets to the registered widgets global.
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*
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* @since 2.8.0
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*
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* @global array $wp_registered_widgets
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*/
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public function _register_widgets() {
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global $wp_registered_widgets;
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$keys = array_keys( $this->widgets );
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$registered = array_keys( $wp_registered_widgets );
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$registered = array_map( '_get_widget_id_base', $registered );
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foreach ( $keys as $key ) {
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// Don't register new widget if old widget with the same id is already registered.
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if ( in_array( $this->widgets[ $key ]->id_base, $registered, true ) ) {
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unset( $this->widgets[ $key ] );
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continue;
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}
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$this->widgets[ $key ]->_register();
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}
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}
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/**
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* Returns the registered WP_Widget object for the given widget type.
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*
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* @since 5.8.0
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*
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* @param string $id_base Widget type ID.
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* @return WP_Widget|null
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*/
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public function get_widget_object( $id_base ) {
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$key = $this->get_widget_key( $id_base );
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if ( '' === $key ) {
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return null;
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}
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return $this->widgets[ $key ];
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}
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/**
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* Returns the registered key for the given widget type.
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*
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* @since 5.8.0
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*
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* @param string $id_base Widget type ID.
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* @return string
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*/
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public function get_widget_key( $id_base ) {
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foreach ( $this->widgets as $key => $widget_object ) {
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if ( $widget_object->id_base === $id_base ) {
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return $key;
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}
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}
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return '';
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}
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}
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