3 * Widget API: WP_Widget_Factory class
11 * Singleton that registers and instantiates WP_Widget classes.
14 * @since 4.4.0 Moved to its own file from wp-includes/widgets.php
16 class WP_Widget_Factory {
25 public $widgets = array();
33 public function __construct() {
34 add_action( 'widgets_init', array( $this, '_register_widgets' ), 100 );
43 public function WP_Widget_Factory() {
44 _deprecated_constructor( 'WP_Widget_Factory', '4.2.0' );
49 * Registers a widget subclass.
54 * @param string $widget_class The name of a WP_Widget subclass.
56 public function register( $widget_class ) {
57 $this->widgets[$widget_class] = new $widget_class();
61 * Un-registers a widget subclass.
66 * @param string $widget_class The name of a WP_Widget subclass.
68 public function unregister( $widget_class ) {
69 unset( $this->widgets[ $widget_class ] );
73 * Serves as a utility method for adding widgets to the registered widgets global.
78 * @global array $wp_registered_widgets
80 public function _register_widgets() {
81 global $wp_registered_widgets;
82 $keys = array_keys($this->widgets);
83 $registered = array_keys($wp_registered_widgets);
84 $registered = array_map('_get_widget_id_base', $registered);
86 foreach ( $keys as $key ) {
87 // don't register new widget if old widget with the same id is already registered
88 if ( in_array($this->widgets[$key]->id_base, $registered, true) ) {
89 unset($this->widgets[$key]);
93 $this->widgets[$key]->_register();