Initiale Version

Kapitel_7/Lektion_4/wordpress/wp-includes/class-wp-widget-factory.php

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+<?php
+/**
+ * Widget API: WP_Widget_Factory class
+ *
+ * @package WordPress
+ * @subpackage Widgets
+ * @since 4.4.0
+ */
+
+/**
+ * Singleton that registers and instantiates WP_Widget classes.
+ *
+ * @since 2.8.0
+ * @since 4.4.0 Moved to its own file from wp-includes/widgets.php
+ */
+class WP_Widget_Factory {
+
+	/**
+	 * Widgets array.
+	 *
+	 * @since 2.8.0
+	 * @access public
+	 * @var array
+	 */
+	public $widgets = array();
+
+	/**
+	 * PHP5 constructor.
+	 *
+	 * @since 4.3.0
+	 * @access public
+	 */
+	public function __construct() {
+		add_action( 'widgets_init', array( $this, '_register_widgets' ), 100 );
+	}
+
+	/**
+	 * PHP4 constructor.
+	 *
+	 * @since 2.8.0
+	 * @access public
+	 */
+	public function WP_Widget_Factory() {
+		_deprecated_constructor( 'WP_Widget_Factory', '4.2.0' );
+		self::__construct();
+	}
+
+	/**
+	 * Registers a widget subclass.
+	 *
+	 * @since 2.8.0
+	 * @access public
+	 *
+	 * @param string $widget_class The name of a WP_Widget subclass.
+	 */
+	public function register( $widget_class ) {
+		$this->widgets[$widget_class] = new $widget_class();
+	}
+
+	/**
+	 * Un-registers a widget subclass.
+	 *
+	 * @since 2.8.0
+	 * @access public
+	 *
+	 * @param string $widget_class The name of a WP_Widget subclass.
+	 */
+	public function unregister( $widget_class ) {
+		unset( $this->widgets[ $widget_class ] );
+	}
+
+	/**
+	 * Serves as a utility method for adding widgets to the registered widgets global.
+	 *
+	 * @since 2.8.0
+	 * @access public
+	 *
+	 * @global array $wp_registered_widgets
+	 */
+	public function _register_widgets() {
+		global $wp_registered_widgets;
+		$keys = array_keys($this->widgets);
+		$registered = array_keys($wp_registered_widgets);
+		$registered = array_map('_get_widget_id_base', $registered);
+
+		foreach ( $keys as $key ) {
+			// don't register new widget if old widget with the same id is already registered
+			if ( in_array($this->widgets[$key]->id_base, $registered, true) ) {
+				unset($this->widgets[$key]);
+				continue;
+			}
+
+			$this->widgets[$key]->_register();
+		}
+	}
+}