X-Git-Url: https://scripts.mit.edu/gitweb/autoinstallsdev/wordpress.git/blobdiff_plain/4feeb71a9d812a9ae371c28a3d8b442a4394ded7..607b7e02d77e7326161e8ec15639052d2040f745:/wp-includes/class-wp-widget-factory.php

diff --git a/wp-includes/class-wp-widget-factory.php b/wp-includes/class-wp-widget-factory.php
index 12b45532..06162581 100644
--- a/wp-includes/class-wp-widget-factory.php
+++ b/wp-includes/class-wp-widget-factory.php
@@ -45,28 +45,84 @@ class WP_Widget_Factory {
 		self::__construct();
 	}
 
+	/**
+	 * Memory for the number of times unique class instances have been hashed.
+	 *
+	 * This can be eliminated in favor of straight spl_object_hash() when 5.3
+	 * is the minimum requirement for PHP.
+	 *
+	 * @since 4.6.0
+	 * @access private
+	 * @var array
+	 *
+	 * @see WP_Widget_Factory::hash_object()
+	 */
+	private $hashed_class_counts = array();
+
+	/**
+	 * Hashes an object, doing fallback of `spl_object_hash()` if not available.
+	 *
+	 * This can be eliminated in favor of straight spl_object_hash() when 5.3
+	 * is the minimum requirement for PHP.
+	 *
+	 * @since 4.6.0
+	 * @access private
+	 *
+	 * @param WP_Widget $widget Widget.
+	 * @return string Object hash.
+	 */
+	private function hash_object( $widget ) {
+		if ( function_exists( 'spl_object_hash' ) ) {
+			return spl_object_hash( $widget );
+		} else {
+			$class_name = get_class( $widget );
+			$hash = $class_name;
+			if ( ! isset( $widget->_wp_widget_factory_hash_id ) ) {
+				if ( ! isset( $this->hashed_class_counts[ $class_name ] ) ) {
+					$this->hashed_class_counts[ $class_name ] = 0;
+				}
+				$this->hashed_class_counts[ $class_name ] += 1;
+				$widget->_wp_widget_factory_hash_id = $this->hashed_class_counts[ $class_name ];
+			}
+			$hash .= ':' . $widget->_wp_widget_factory_hash_id;
+			return $hash;
+		}
+	}
+
 	/**
 	 * Registers a widget subclass.
 	 *
 	 * @since 2.8.0
+	 * @since 4.6.0 Updated the `$widget` parameter to also accept a WP_Widget instance object
+	 *              instead of simply a `WP_Widget` subclass name.
 	 * @access public
 	 *
-	 * @param string $widget_class The name of a WP_Widget subclass.
+	 * @param string|WP_Widget $widget Either the name of a `WP_Widget` subclass or an instance of a `WP_Widget` subclass.
 	 */
-	public function register( $widget_class ) {
-		$this->widgets[$widget_class] = new $widget_class();
+	public function register( $widget ) {
+		if ( $widget instanceof WP_Widget ) {
+			$this->widgets[ $this->hash_object( $widget ) ] = $widget;
+		} else {
+			$this->widgets[ $widget ] = new $widget();
+		}
 	}
 
 	/**
 	 * Un-registers a widget subclass.
 	 *
 	 * @since 2.8.0
+	 * @since 4.6.0 Updated the `$widget` parameter to also accept a WP_Widget instance object
+	 *              instead of simply a `WP_Widget` subclass name.
 	 * @access public
 	 *
-	 * @param string $widget_class The name of a WP_Widget subclass.
+	 * @param string|WP_Widget $widget Either the name of a `WP_Widget` subclass or an instance of a `WP_Widget` subclass.
 	 */
-	public function unregister( $widget_class ) {
-		unset( $this->widgets[ $widget_class ] );
+	public function unregister( $widget ) {
+		if ( $widget instanceof WP_Widget ) {
+			unset( $this->widgets[ $this->hash_object( $widget ) ] );
+		} else {
+			unset( $this->widgets[ $widget ] );
+		}
 	}
 
 	/**