Customize: Eliminate use of customize-loader in core so Customizer is opened consistently in `top` window.

* Open the door for future browser history feature in #28536, which is currently not feasible when customize-loader is used.
* Remove customizer-loader from being used on admin screens for Dashboard, Themes, non-shiny theme install/update.
* Keep the customize-loader functionality available for plugins, for the time being. It may become deprecated.
* Ensure `return` param in customizer links in Themes screen update to reflect `search` updated by `pushState`.
* Persist `return` when reloading Customizer due to theme switch, autosave restoration, or changeset trashing.
* Use `location.replace()` instead of changing `location.href` when trashing.
* Hide theme browser while Themes screen is loading when there is a `search` to prevent flash of unfiltered themes.
* Use throttling instead of debouncing when searching themes to ensure that screen is updated immediately on page load.
* Fix encoding and decoding of `search` param between URL and search field.
* Add support for dismissing autosaves when closing customize-loader, when it is used by plugins.
* Skip sending changeset UUID to customize-loader for population in browser location if changeset branching is not enabled.

See #28536.
Fixes #40254.

Built from https://develop.svn.wordpress.org/trunk@41797


git-svn-id: http://core.svn.wordpress.org/trunk@41631 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/css/themes-rtl.css

@@ -7,6 +7,10 @@
   16.1 - Manage Themes
 ------------------------------------------------------------------------------*/
 
+body.js .theme-browser.search-loading {
+	display: none;
+}
+
 .theme-browser .themes {
 	clear: both;
 }

wp-admin/css/themes.css

@@ -7,6 +7,10 @@
   16.1 - Manage Themes
 ------------------------------------------------------------------------------*/
 
+body.js .theme-browser.search-loading {
+	display: none;
+}
+
 .theme-browser .themes {
 	clear: both;
 }

wp-admin/includes/class-theme-installer-skin.php

@@ -64,7 +64,14 @@ class Theme_Installer_Skin extends WP_Upgrader_Skin {
 		$install_actions = array();
 
 		if ( current_user_can( 'edit_theme_options' ) && current_user_can( 'customize' ) ) {
-			$install_actions['preview'] = '<a href="' . wp_customize_url( $stylesheet ) . '" class="hide-if-no-customize load-customize"><span aria-hidden="true">' . __( 'Live Preview' ) . '</span><span class="screen-reader-text">' . sprintf( __( 'Live Preview &#8220;%s&#8221;' ), $name ) . '</span></a>';
+			$customize_url = add_query_arg(
+				array(
+					'theme' => urlencode( $stylesheet ),
+					'return' => urlencode( admin_url( 'web' === $this->type ? 'theme-install.php' : 'themes.php' ) ),
+				),
+				admin_url( 'customize.php' )
+			);
+			$install_actions['preview'] = '<a href="' . esc_url( $customize_url ) . '" class="hide-if-no-customize load-customize"><span aria-hidden="true">' . __( 'Live Preview' ) . '</span><span class="screen-reader-text">' . sprintf( __( 'Live Preview &#8220;%s&#8221;' ), $name ) . '</span></a>';
 		}
 		$install_actions['activate'] = '<a href="' . esc_url( $activate_link ) . '" class="activatelink"><span aria-hidden="true">' . __( 'Activate' ) . '</span><span class="screen-reader-text">' . sprintf( __( 'Activate &#8220;%s&#8221;' ), $name ) . '</span></a>';
 

wp-admin/includes/class-theme-upgrader-skin.php

@@ -49,13 +49,20 @@ class Theme_Upgrader_Skin extends WP_Upgrader_Skin {
 			), admin_url('themes.php') );
 			$activate_link = wp_nonce_url( $activate_link, 'switch-theme_' . $stylesheet );
 
+			$customize_url = add_query_arg(
+				array(
+					'theme' => urlencode( $stylesheet ),
+					'return' => urlencode( admin_url( 'themes.php' ) ),
+				),
+				admin_url( 'customize.php' )
+			);
 			if ( get_stylesheet() == $stylesheet ) {
 				if ( current_user_can( 'edit_theme_options' ) && current_user_can( 'customize' ) ) {
-					$update_actions['preview']  = '<a href="' . wp_customize_url( $stylesheet ) . '" class="hide-if-no-customize load-customize"><span aria-hidden="true">' . __( 'Customize' ) . '</span><span class="screen-reader-text">' . sprintf( __( 'Customize &#8220;%s&#8221;' ), $name ) . '</span></a>';
+					$update_actions['preview']  = '<a href="' . esc_url( $customize_url ) . '" class="hide-if-no-customize load-customize"><span aria-hidden="true">' . __( 'Customize' ) . '</span><span class="screen-reader-text">' . sprintf( __( 'Customize &#8220;%s&#8221;' ), $name ) . '</span></a>';
 				}
 			} elseif ( current_user_can( 'switch_themes' ) ) {
 				if ( current_user_can( 'edit_theme_options' ) && current_user_can( 'customize' ) ) {
-					$update_actions['preview'] = '<a href="' . wp_customize_url( $stylesheet ) . '" class="hide-if-no-customize load-customize"><span aria-hidden="true">' . __( 'Live Preview' ) . '</span><span class="screen-reader-text">' . sprintf( __( 'Live Preview &#8220;%s&#8221;' ), $name ) . '</span></a>';
+					$update_actions['preview'] = '<a href="' . esc_url( $customize_url ) . '" class="hide-if-no-customize load-customize"><span aria-hidden="true">' . __( 'Live Preview' ) . '</span><span class="screen-reader-text">' . sprintf( __( 'Live Preview &#8220;%s&#8221;' ), $name ) . '</span></a>';
 				}
 				$update_actions['activate'] = '<a href="' . esc_url( $activate_link ) . '" class="activatelink"><span aria-hidden="true">' . __( 'Activate' ) . '</span><span class="screen-reader-text">' . sprintf( __( 'Activate &#8220;%s&#8221;' ), $name ) . '</span></a>';
 			}

wp-admin/index.php

@@ -16,8 +16,6 @@ wp_dashboard_setup();
 
 wp_enqueue_script( 'dashboard' );
 
-if ( current_user_can( 'edit_theme_options' ) )
-	wp_enqueue_script( 'customize-loader' );
 if ( current_user_can( 'install_plugins' ) ) {
 	wp_enqueue_script( 'plugin-install' );
 	wp_enqueue_script( 'updates' );

wp-admin/js/customize-controls.js

@@ -106,7 +106,7 @@
 		 *
 		 * @since 4.9.0
 		 *
-		 * @param {string|wp.customize.Notification} - Notification object to add. Alternatively code may be supplied, and in that case the second notificationObject argument must be supplied.
+		 * @param {string|wp.customize.Notification} notification - Notification object to add. Alternatively code may be supplied, and in that case the second notificationObject argument must be supplied.
 		 * @param {wp.customize.Notification} [notificationObject] - Notification to add when first argument is the code string.
 		 * @returns {wp.customize.Notification} Added notification (or existing instance if it was already added).
 		 */
@@ -3014,7 +3014,8 @@
 				api.utils.parseQueryString( urlParser.search.substr( 1 ) ),
 				{
 					theme: themeId,
-					changeset_uuid: api.settings.changeset.uuid
+					changeset_uuid: api.settings.changeset.uuid,
+					'return': api.settings.url['return']
 				}
 			);
 
@@ -3044,7 +3045,7 @@
 				request.done( function() {
 					deferred.resolve();
 					$( window ).off( 'beforeunload.customize-confirm' );
-					window.location.href = urlParser.href; // @todo Use location.replace()?
+					location.replace( urlParser.href );
 				} );
 				request.fail( function() {
 
@@ -6958,7 +6959,9 @@
 						if ( 'changeset_already_published' === response.code && response.next_changeset_uuid ) {
 							api.settings.changeset.uuid = response.next_changeset_uuid;
 							api.state( 'changesetStatus' ).set( '' );
+							if ( api.settings.changeset.branching ) {
 								parent.send( 'changeset-uuid', api.settings.changeset.uuid );
+							}
 							api.previewer.send( 'changeset-uuid', api.settings.changeset.uuid );
 						}
 					} );
@@ -6989,8 +6992,10 @@
 
 							api.state( 'changesetStatus' ).set( '' );
 							api.settings.changeset.uuid = response.next_changeset_uuid;
+							if ( api.settings.changeset.branching ) {
 								parent.send( 'changeset-uuid', api.settings.changeset.uuid );
 							}
+						}
 
 						// Prevent subsequent requestChangesetUpdate() calls from including the settings that have been saved.
 						api._lastSavedRevision = Math.max( latestRevision, api._lastSavedRevision );
@@ -7065,6 +7070,7 @@
 					urlParser.href = location.href;
 					queryParams = api.utils.parseQueryString( urlParser.search.substr( 1 ) );
 					delete queryParams.changeset_uuid;
+					queryParams['return'] = api.settings.url['return'];
 					urlParser.search = $.param( queryParams );
 					location.replace( urlParser.href );
 				};
@@ -7418,6 +7424,7 @@
 				} else {
 					queryParams.customize_autosaved = 'on';
 				}
+				queryParams['return'] = api.settings.url['return'];
 				urlParser.search = $.param( queryParams );
 				return urlParser.href;
 			}
@@ -7915,16 +7922,9 @@
 			}
 			api.bind( 'change', startPromptingBeforeUnload );
 
-			closeBtn.on( 'click.customize-controls-close', function( event ) {
+			function requestClose() {
 				var clearedToClose = $.Deferred();
-				event.preventDefault();
+				if ( isCleanState() ) {
-
-				/*
-				 * The isInsideIframe condition is because Customizer is not able to use a confirm()
-				 * since customize-loader.js will also use one. So autosave restorations are disabled
-				 * when customize-loader.js is used.
-				 */
-				if ( isInsideIframe || isCleanState() ) {
 					clearedToClose.resolve();
 				} else if ( confirm( api.l10n.saveAlert ) ) {
 
@@ -7954,16 +7954,28 @@
 				} else {
 					clearedToClose.reject();
 				}
-
+				return clearedToClose.promise();
-				clearedToClose.done( function() {
-					$( window ).off( 'beforeunload.customize-confirm' );
-					if ( isInsideIframe ) {
-						parent.send( 'close' );
-					} else {
-						window.location.href = closeBtn.prop( 'href' );
 			}
+
+			parent.bind( 'confirm-close', function() {
+				requestClose().done( function() {
+					parent.send( 'confirmed-close', true );
+				} ).fail( function() {
+					parent.send( 'confirmed-close', false );
 				} );
 			} );
+
+			closeBtn.on( 'click.customize-controls-close', function( event ) {
+				event.preventDefault();
+				if ( isInsideIframe ) {
+					parent.send( 'close' ); // See confirm-close logic above.
+				} else {
+					requestClose().done( function() {
+						$( window ).off( 'beforeunload.customize-confirm' );
+						window.location.href = closeBtn.prop( 'href' );
+					} );
+				}
+			});
 		})();
 
 		// Pass events through to the parent.
@@ -7978,7 +7990,9 @@
 			parent.send( 'title', newTitle );
 		});
 
+		if ( api.settings.changeset.branching ) {
 			parent.send( 'changeset-uuid', api.settings.changeset.uuid );
+		}
 
 		// Initialize the connection with the parent frame.
 		parent.send( 'ready' );

wp-admin/js/theme.js

@@ -77,6 +77,8 @@ themes.view.Appearance = wp.Backbone.View.extend({
 		// Render search form.
 		this.search();
 
+		this.$el.removeClass( 'search-loading' );
+
 		// Render and append
 		this.view.render();
 		this.$el.empty().append( this.view.el ).addClass( 'rendered' );
@@ -1345,17 +1347,15 @@ themes.view.Search = wp.Backbone.View.extend({
 			event.target.value = '';
 		}
 
-		/**
+		// Note that doSearch is throttled.
-		 * Since doSearch is debounced, it will only run when user input comes to a rest
-		 */
 		this.doSearch( event );
 	},
 
 	// Runs a search on the theme collection.
-	doSearch: _.debounce( function( event ) {
+	doSearch: _.throttle( function( event ) {
 		var options = {};
 
-		this.collection.doSearch( event.target.value );
+		this.collection.doSearch( event.target.value.replace( /\+/g, ' ' ) );
 
 		// if search is initiated and key is not return
 		if ( this.searching && event.which !== 13 ) {
@@ -1376,7 +1376,7 @@ themes.view.Search = wp.Backbone.View.extend({
 		var url = themes.router.baseUrl( '' );
 
 		if ( event.target.value ) {
-			url = themes.router.baseUrl( themes.router.searchPath + event.target.value );
+			url = themes.router.baseUrl( themes.router.searchPath + encodeURIComponent( event.target.value ) );
 		}
 
 		this.searching = false;
@@ -1385,6 +1385,22 @@ themes.view.Search = wp.Backbone.View.extend({
 	}
 });
 
+/**
+ * Navigate router.
+ *
+ * @since 4.9.0
+ *
+ * @param {string} url - URL to navigate to.
+ * @param {object} state - State.
+ * @returns {void}
+ */
+function navigateRouter( url, state ) {
+	var router = this;
+	if ( Backbone.history._hasPushState ) {
+		Backbone.Router.prototype.navigate.call( router, url, state );
+	}
+}
+
 // Sets up the routes events for relevant url queries
 // Listens to [theme] and [search] params
 themes.Router = Backbone.Router.extend({
@@ -1405,18 +1421,14 @@ themes.Router = Backbone.Router.extend({
 	searchPath: '?search=',
 
 	search: function( query ) {
-		$( '.wp-filter-search' ).val( query );
+		$( '.wp-filter-search' ).val( query.replace( /\+/g, ' ' ) );
 	},
 
 	themes: function() {
 		$( '.wp-filter-search' ).val( '' );
 	},
 
-	navigate: function() {
+	navigate: navigateRouter
-		if ( Backbone.history._hasPushState ) {
-			Backbone.Router.prototype.navigate.apply( this, arguments );
-		}
-	}
 
 });
 
@@ -1508,7 +1520,7 @@ themes.view.InstallerSearch =  themes.view.Search.extend({
 		this.doSearch( event.target.value );
 	},
 
-	doSearch: _.debounce( function( value ) {
+	doSearch: _.throttle( function( value ) {
 		var request = {};
 
 		// Don't do anything if the search terms haven't changed.
@@ -1551,7 +1563,7 @@ themes.view.InstallerSearch =  themes.view.Search.extend({
 		this.collection.query( request );
 
 		// Set route
-		themes.router.navigate( themes.router.baseUrl( themes.router.searchPath + value ), { replace: true } );
+		themes.router.navigate( themes.router.baseUrl( themes.router.searchPath + encodeURIComponent( value ) ), { replace: true } );
 	}, 500 )
 });
 
@@ -1887,14 +1899,10 @@ themes.InstallerRouter = Backbone.Router.extend({
 	searchPath: '?search=',
 
 	search: function( query ) {
-		$( '.wp-filter-search' ).val( query );
+		$( '.wp-filter-search' ).val( query.replace( /\+/g, ' ' ) );
 	},
 
-	navigate: function() {
+	navigate: navigateRouter
-		if ( Backbone.history._hasPushState ) {
-			Backbone.Router.prototype.navigate.apply( this, arguments );
-		}
-	}
 });
 
 
@@ -2003,6 +2011,19 @@ $( document ).ready(function() {
 		themes.Run.init();
 	}
 
+	// Update the return param just in time.
+	$( document.body ).on( 'click', '.load-customize', function() {
+		var link = $( this ), urlParser = document.createElement( 'a' );
+		urlParser.href = link.prop( 'href' );
+		urlParser.search = $.param( _.extend(
+			wp.customize.utils.parseQueryString( urlParser.search.substr( 1 ) ),
+			{
+				'return': window.location.href
+			}
+		) );
+		link.prop( 'href', urlParser.href );
+	});
+
 	$( '.broken-themes .delete-theme' ).on( 'click', function() {
 		return confirm( _wpThemeSettings.settings.confirmDelete );
 	});

wp-admin/themes.php

@@ -146,14 +146,13 @@ wp_localize_script( 'theme', '_wpThemeSettings', array(
 add_thickbox();
 wp_enqueue_script( 'theme' );
 wp_enqueue_script( 'updates' );
-wp_enqueue_script( 'customize-loader' );
 
 require_once( ABSPATH . 'wp-admin/admin-header.php' );
 ?>
 
 <div class="wrap">
 	<h1 class="wp-heading-inline"><?php esc_html_e( 'Themes' ); ?>
-		<span class="title-count theme-count"><?php echo count( $themes ); ?></span>
+		<span class="title-count theme-count"><?php echo ! empty( $_GET['search'] ) ? __( '&hellip;' ) : count( $themes ); ?></span>
 	</h1>
 
 	<?php if ( ! is_multisite() && current_user_can( 'install_themes' ) ) : ?>
@@ -234,7 +233,13 @@ if ( ! $ct->errors() || ( 1 == count( $ct->errors()->get_error_codes() )
 
 ?>
 
-<div class="theme-browser">
+<?php
+$class_name = 'theme-browser';
+if ( ! empty( $_GET['search'] ) ) {
+	$class_name .= ' search-loading';
+}
+?>
+<div class="<?php echo esc_attr( $class_name ); ?>">
 	<div class="themes wp-clearfix">
 
 <?php

wp-admin/update.php

@@ -173,7 +173,6 @@ if ( isset($_GET['action']) ) {
 
 		check_admin_referer('upgrade-theme_' . $theme);
 
-		wp_enqueue_script( 'customize-loader' );
 		wp_enqueue_script( 'updates' );
 
 		$title = __('Update Theme');
@@ -223,10 +222,9 @@ if ( isset($_GET['action']) ) {
 		check_admin_referer( 'install-theme_' . $theme );
 		$api = themes_api('theme_information', array('slug' => $theme, 'fields' => array('sections' => false, 'tags' => false) ) ); //Save on a bit of bandwidth.
 
-		if ( is_wp_error($api) )
+		if ( is_wp_error( $api ) ) {
 			wp_die( $api );
-
+		}
-		wp_enqueue_script( 'customize-loader' );
 
 		$title = __('Install Themes');
 		$parent_file = 'themes.php';
@@ -253,8 +251,6 @@ if ( isset($_GET['action']) ) {
 
 		$file_upload = new File_Upload_Upgrader('themezip', 'package');
 
-		wp_enqueue_script( 'customize-loader' );
-
 		$title = __('Upload Theme');
 		$parent_file = 'themes.php';
 		$submenu_file = 'theme-install.php';

wp-includes/class-wp-customize-manager.php

@@ -4236,6 +4236,7 @@ final class WP_Customize_Manager {
 			),
 			'url'      => array(
 				'preview'       => esc_url_raw( $this->get_preview_url() ),
+				'return'        => esc_url_raw( $this->get_return_url() ),
 				'parent'        => esc_url_raw( admin_url() ),
 				'activated'     => esc_url_raw( home_url( '/' ) ),
 				'ajax'          => esc_url_raw( admin_url( 'admin-ajax.php', 'relative' ) ),

wp-includes/js/customize-loader.js

@@ -1,4 +1,4 @@
-/* global _wpCustomizeLoaderSettings, confirm */
+/* global _wpCustomizeLoaderSettings */
 /**
  * Expose a public API that allows the customizer to be
  * loaded on any page.
@@ -208,25 +208,30 @@ window.wp = window.wp || {};
 		 * Close the Customizer overlay.
 		 */
 		close: function() {
-			if ( ! this.active ) {
+			var self = this, onConfirmClose;
+			if ( ! self.active ) {
 				return;
 			}
 
-			// Display AYS dialog if Customizer is dirty
+			onConfirmClose = function( confirmed ) {
-			if ( ! this.saved() && ! confirm( Loader.settings.l10n.saveAlert ) ) {
+				if ( confirmed ) {
-				// Go forward since Customizer is exited by history.back()
+					self.active = false;
-				history.forward();
+					self.trigger( 'close' );
-				return;
-			}
-
-			this.active = false;
-
-			this.trigger( 'close' );
 
 					// Restore document title prior to opening the Live Preview
-			if ( this.originalDocumentTitle ) {
+					if ( self.originalDocumentTitle ) {
-				document.title = this.originalDocumentTitle;
+						document.title = self.originalDocumentTitle;
 					}
+				} else {
+
+					// Go forward since Customizer is exited by history.back()
+					history.forward();
+				}
+				self.messenger.unbind( 'confirmed-close', onConfirmClose );
+			};
+			self.messenger.bind( 'confirmed-close', onConfirmClose );
+
+			Loader.messenger.send( 'confirm-close' );
 		},
 
 		/**

wp-includes/js/customize-loader.min.js

@@ -1 +1 @@
-window.wp=window.wp||{},function(a,b){var c,d=wp.customize;b.extend(b.support,{history:!(!window.history||!history.pushState),hashchange:"onhashchange"in window&&(void 0===document.documentMode||document.documentMode>7)}),c=b.extend({},d.Events,{initialize:function(){this.body=b(document.body),c.settings&&b.support.postMessage&&(b.support.cors||!c.settings.isCrossDomain)&&(this.window=b(window),this.element=b('<div id="customize-container" />').appendTo(this.body),this.bind("open",this.overlay.show),this.bind("close",this.overlay.hide),b("#wpbody").on("click",".load-customize",function(a){a.preventDefault(),c.link=b(this),c.open(c.link.attr("href"))}),b.support.history&&this.window.on("popstate",c.popstate),b.support.hashchange&&(this.window.on("hashchange",c.hashchange),this.window.triggerHandler("hashchange")))},popstate:function(a){var b=a.originalEvent.state;b&&b.customize?c.open(b.customize):c.active&&c.close()},hashchange:function(){var a=window.location.toString().split("#")[1];a&&0===a.indexOf("wp_customize=on")&&c.open(c.settings.url+"?"+a),a||b.support.history||c.close()},beforeunload:function(){if(!c.saved())return c.settings.l10n.saveAlert},open:function(a){if(!this.active){if(c.settings.browser.mobile)return window.location=a;this.originalDocumentTitle=document.title,this.active=!0,this.body.addClass("customize-loading"),this.saved=new d.Value(!0),this.iframe=b("<iframe />",{src:a,title:c.settings.l10n.mainIframeTitle}).appendTo(this.element),this.iframe.one("load",this.loaded),this.messenger=new d.Messenger({url:a,channel:"loader",targetWindow:this.iframe[0].contentWindow}),history.replaceState&&this.messenger.bind("changeset-uuid",function(a){var c=document.createElement("a");c.href=location.href,c.search=b.param(_.extend(d.utils.parseQueryString(c.search.substr(1)),{changeset_uuid:a})),history.replaceState({customize:c.href},"",c.href)}),this.messenger.bind("ready",function(){c.messenger.send("back")}),this.messenger.bind("close",function(){b.support.history?history.back():b.support.hashchange?window.location.hash="":c.close()}),b(window).on("beforeunload",this.beforeunload),this.messenger.bind("saved",function(){c.saved(!0)}),this.messenger.bind("change",function(){c.saved(!1)}),this.messenger.bind("title",function(a){window.document.title=a}),this.pushState(a),this.trigger("open")}},pushState:function(a){var c=a.split("?")[1];b.support.history&&window.location.href!==a?history.pushState({customize:a},"",a):!b.support.history&&b.support.hashchange&&c&&(window.location.hash="wp_customize=on&"+c),this.trigger("open")},opened:function(){c.body.addClass("customize-active full-overlay-active").attr("aria-busy","true")},close:function(){if(this.active){if(!this.saved()&&!confirm(c.settings.l10n.saveAlert))return void history.forward();this.active=!1,this.trigger("close"),this.originalDocumentTitle&&(document.title=this.originalDocumentTitle)}},closed:function(){c.iframe.remove(),c.messenger.destroy(),c.iframe=null,c.messenger=null,c.saved=null,c.body.removeClass("customize-active full-overlay-active").removeClass("customize-loading"),b(window).off("beforeunload",c.beforeunload),c.link&&c.link.focus()},loaded:function(){c.body.removeClass("customize-loading").attr("aria-busy","false")},overlay:{show:function(){this.element.fadeIn(200,c.opened)},hide:function(){this.element.fadeOut(200,c.closed)}}}),b(function(){c.settings=_wpCustomizeLoaderSettings,c.initialize()}),d.Loader=c}(wp,jQuery);
+window.wp=window.wp||{},function(a,b){var c,d=wp.customize;b.extend(b.support,{history:!(!window.history||!history.pushState),hashchange:"onhashchange"in window&&(void 0===document.documentMode||document.documentMode>7)}),c=b.extend({},d.Events,{initialize:function(){this.body=b(document.body),c.settings&&b.support.postMessage&&(b.support.cors||!c.settings.isCrossDomain)&&(this.window=b(window),this.element=b('<div id="customize-container" />').appendTo(this.body),this.bind("open",this.overlay.show),this.bind("close",this.overlay.hide),b("#wpbody").on("click",".load-customize",function(a){a.preventDefault(),c.link=b(this),c.open(c.link.attr("href"))}),b.support.history&&this.window.on("popstate",c.popstate),b.support.hashchange&&(this.window.on("hashchange",c.hashchange),this.window.triggerHandler("hashchange")))},popstate:function(a){var b=a.originalEvent.state;b&&b.customize?c.open(b.customize):c.active&&c.close()},hashchange:function(){var a=window.location.toString().split("#")[1];a&&0===a.indexOf("wp_customize=on")&&c.open(c.settings.url+"?"+a),a||b.support.history||c.close()},beforeunload:function(){if(!c.saved())return c.settings.l10n.saveAlert},open:function(a){if(!this.active){if(c.settings.browser.mobile)return window.location=a;this.originalDocumentTitle=document.title,this.active=!0,this.body.addClass("customize-loading"),this.saved=new d.Value(!0),this.iframe=b("<iframe />",{src:a,title:c.settings.l10n.mainIframeTitle}).appendTo(this.element),this.iframe.one("load",this.loaded),this.messenger=new d.Messenger({url:a,channel:"loader",targetWindow:this.iframe[0].contentWindow}),history.replaceState&&this.messenger.bind("changeset-uuid",function(a){var c=document.createElement("a");c.href=location.href,c.search=b.param(_.extend(d.utils.parseQueryString(c.search.substr(1)),{changeset_uuid:a})),history.replaceState({customize:c.href},"",c.href)}),this.messenger.bind("ready",function(){c.messenger.send("back")}),this.messenger.bind("close",function(){b.support.history?history.back():b.support.hashchange?window.location.hash="":c.close()}),b(window).on("beforeunload",this.beforeunload),this.messenger.bind("saved",function(){c.saved(!0)}),this.messenger.bind("change",function(){c.saved(!1)}),this.messenger.bind("title",function(a){window.document.title=a}),this.pushState(a),this.trigger("open")}},pushState:function(a){var c=a.split("?")[1];b.support.history&&window.location.href!==a?history.pushState({customize:a},"",a):!b.support.history&&b.support.hashchange&&c&&(window.location.hash="wp_customize=on&"+c),this.trigger("open")},opened:function(){c.body.addClass("customize-active full-overlay-active").attr("aria-busy","true")},close:function(){var a,b=this;b.active&&(a=function(c){c?(b.active=!1,b.trigger("close"),b.originalDocumentTitle&&(document.title=b.originalDocumentTitle)):history.forward(),b.messenger.unbind("confirmed-close",a)},b.messenger.bind("confirmed-close",a),c.messenger.send("confirm-close"))},closed:function(){c.iframe.remove(),c.messenger.destroy(),c.iframe=null,c.messenger=null,c.saved=null,c.body.removeClass("customize-active full-overlay-active").removeClass("customize-loading"),b(window).off("beforeunload",c.beforeunload),c.link&&c.link.focus()},loaded:function(){c.body.removeClass("customize-loading").attr("aria-busy","false")},overlay:{show:function(){this.element.fadeIn(200,c.opened)},hide:function(){this.element.fadeOut(200,c.closed)}}}),b(function(){c.settings=_wpCustomizeLoaderSettings,c.initialize()}),d.Loader=c}(wp,jQuery);

wp-includes/script-loader.php

@@ -725,7 +725,7 @@ function wp_default_scripts( &$scripts ) {
 		$scripts->add( 'text-widgets', "/wp-admin/js/widgets/text-widgets$suffix.js", array( 'jquery', 'backbone', 'editor', 'wp-util', 'wp-a11y' ) );
 		$scripts->add( 'custom-html-widgets', "/wp-admin/js/widgets/custom-html-widgets$suffix.js", array( 'code-editor', 'jquery', 'backbone', 'wp-util', 'jquery-ui-core', 'wp-a11y' ) );
 
-		$scripts->add( 'theme', "/wp-admin/js/theme$suffix.js", array( 'wp-backbone', 'wp-a11y' ), false, 1 );
+		$scripts->add( 'theme', "/wp-admin/js/theme$suffix.js", array( 'wp-backbone', 'wp-a11y', 'customize-base' ), false, 1 );
 
 		$scripts->add( 'inline-edit-post', "/wp-admin/js/inline-edit-post$suffix.js", array( 'jquery', 'tags-suggest', 'wp-a11y' ), false, 1 );
 		did_action( 'init' ) && $scripts->localize( 'inline-edit-post', 'inlineEditL10n', array(

wp-includes/version.php

@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.9-beta1-41796';
+$wp_version = '4.9-beta1-41797';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.