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EDIT :: customize-preview-nav-menus.js

/* global _wpCustomizePreviewNavMenusExports */ wp.customize.navMenusPreview = wp.customize.MenusCustomizerPreview = ( function( $, _, wp, api ) { 'use strict'; var self = { data: { navMenuInstanceArgs: {} } }; if ( 'undefined' !== typeof _wpCustomizePreviewNavMenusExports ) { _.extend( self.data, _wpCustomizePreviewNavMenusExports ); } /** * Initialize nav menus preview. */ self.init = function() { var self = this, synced = false; /* * Keep track of whether we synced to determine whether or not bindSettingListener * should also initially fire the listener. This initial firing needs to wait until * after all of the settings have been synced from the pane in order to prevent * an infinite selective fallback-refresh. Note that this sync handler will be * added after the sync handler in customize-preview.js, so it will be triggered * after all of the settings are added. */ api.preview.bind( 'sync', function() { synced = true; } ); if ( api.selectiveRefresh ) { // Listen for changes to settings related to nav menus. api.each( function( setting ) { self.bindSettingListener( setting ); } ); api.bind( 'add', function( setting ) { /* * Handle case where an invalid nav menu item (one for which its associated object has been deleted) * is synced from the controls into the preview. Since invalid nav menu items are filtered out from * being exported to the frontend by the _is_valid_nav_menu_item filter in wp_get_nav_menu_items(), * the customizer controls will have a nav_menu_item setting where the preview will have none, and * this can trigger an infinite fallback refresh when the nav menu item lacks any valid items. */ if ( setting.get() && ! setting.get()._invalid ) { self.bindSettingListener( setting, { fire: synced } ); } } ); api.bind( 'remove', function( setting ) { self.unbindSettingListener( setting ); } ); /* * Ensure that wp_nav_menu() instances nested inside of other partials * will be recognized as being present on the page. */ api.selectiveRefresh.bind( 'render-partials-response', function( response ) { if ( response.nav_menu_instance_args ) { _.extend( self.data.navMenuInstanceArgs, response.nav_menu_instance_args ); } } ); } api.preview.bind( 'active', function() { self.highlightControls(); } ); }; if ( api.selectiveRefresh ) { /** * Partial representing an invocation of wp_nav_menu(). * * @class * @augments wp.customize.selectiveRefresh.Partial * @since 4.5.0 */ self.NavMenuInstancePartial = api.selectiveRefresh.Partial.extend({ /** * Constructor. * * @since 4.5.0 * @param {string} id - Partial ID. * @param {Object} options * @param {Object} options.params * @param {Object} options.params.navMenuArgs * @param {string} options.params.navMenuArgs.args_hmac * @param {string} [options.params.navMenuArgs.theme_location] * @param {number} [options.params.navMenuArgs.menu] * @param {object} [options.constructingContainerContext] */ initialize: function( id, options ) { var partial = this, matches, argsHmac; matches = id.match( /^nav_menu_instance\[([0-9a-f]{32})]$/ ); if ( ! matches ) { throw new Error( 'Illegal id for nav_menu_instance partial. The key corresponds with the args HMAC.' ); } argsHmac = matches[1]; options = options || {}; options.params = _.extend( { selector: '[data-customize-partial-id="' + id + '"]', navMenuArgs: options.constructingContainerContext || {}, containerInclusive: true }, options.params || {} ); api.selectiveRefresh.Partial.prototype.initialize.call( partial, id, options ); if ( ! _.isObject( partial.params.navMenuArgs ) ) { throw new Error( 'Missing navMenuArgs' ); } if ( partial.params.navMenuArgs.args_hmac !== argsHmac ) { throw new Error( 'args_hmac mismatch with id' ); } }, /** * Return whether the setting is related to this partial. * * @since 4.5.0 * @param {wp.customize.Value|string} setting - Object or ID. * @param {number|object|false|null} newValue - New value, or null if the setting was just removed. * @param {number|object|false|null} oldValue - Old value, or null if the setting was just added. * @returns {boolean} */ isRelatedSetting: function( setting, newValue, oldValue ) { var partial = this, navMenuLocationSetting, navMenuId, isNavMenuItemSetting, _newValue, _oldValue, urlParser; if ( _.isString( setting ) ) { setting = api( setting ); } /* * Prevent nav_menu_item changes only containing type_label differences triggering a refresh. * These settings in the preview do not include type_label property, and so if one of these * nav_menu_item settings is dirty, after a refresh the nav menu instance would do a selective * refresh immediately because the setting from the pane would have the type_label whereas * the setting in the preview would not, thus triggering a change event. The following * condition short-circuits this unnecessary selective refresh and also prevents an infinite * loop in the case where a nav_menu_instance partial had done a fallback refresh. * @todo Nav menu item settings should not include a type_label property to begin with. */ isNavMenuItemSetting = /^nav_menu_item\[/.test( setting.id ); if ( isNavMenuItemSetting && _.isObject( newValue ) && _.isObject( oldValue ) ) { _newValue = _.clone( newValue ); _oldValue = _.clone( oldValue ); delete _newValue.type_label; delete _oldValue.type_label; // Normalize URL scheme when parent frame is HTTPS to prevent selective refresh upon initial page load. if ( 'https' === api.preview.scheme.get() ) { urlParser = document.createElement( 'a' ); urlParser.href = _newValue.url; urlParser.protocol = 'https:'; _newValue.url = urlParser.href; urlParser.href = _oldValue.url; urlParser.protocol = 'https:'; _oldValue.url = urlParser.href; } // Prevent original_title differences from causing refreshes if title is present. if ( newValue.title ) { delete _oldValue.original_title; delete _newValue.original_title; } if ( _.isEqual( _oldValue, _newValue ) ) { return false; } } if ( partial.params.navMenuArgs.theme_location ) { if ( 'nav_menu_locations[' + partial.params.navMenuArgs.theme_location + ']' === setting.id ) { return true; } navMenuLocationSetting = api( 'nav_menu_locations[' + partial.params.navMenuArgs.theme_location + ']' ); } navMenuId = partial.params.navMenuArgs.menu; if ( ! navMenuId && navMenuLocationSetting ) { navMenuId = navMenuLocationSetting(); } if ( ! navMenuId ) { return false; } return ( ( 'nav_menu[' + navMenuId + ']' === setting.id ) || ( isNavMenuItemSetting && ( ( newValue && newValue.nav_menu_term_id === navMenuId ) || ( oldValue && oldValue.nav_menu_term_id === navMenuId ) ) ) ); }, /** * Make sure that partial fallback behavior is invoked if there is no associated menu. * * @since 4.5.0 * * @returns {Promise} */ refresh: function() { var partial = this, menuId, deferred = $.Deferred(); // Make sure the fallback behavior is invoked when the partial is no longer associated with a menu. if ( _.isNumber( partial.params.navMenuArgs.menu ) ) { menuId = partial.params.navMenuArgs.menu; } else if ( partial.params.navMenuArgs.theme_location && api.has( 'nav_menu_locations[' + partial.params.navMenuArgs.theme_location + ']' ) ) { menuId = api( 'nav_menu_locations[' + partial.params.navMenuArgs.theme_location + ']' ).get(); } if ( ! menuId ) { partial.fallback(); deferred.reject(); return deferred.promise(); } return api.selectiveRefresh.Partial.prototype.refresh.call( partial ); }, /** * Render content. * * @inheritdoc * @param {wp.customize.selectiveRefresh.Placement} placement */ renderContent: function( placement ) { var partial = this, previousContainer = placement.container; // Do fallback behavior to refresh preview if menu is now empty. if ( '' === placement.addedContent ) { placement.partial.fallback(); } if ( api.selectiveRefresh.Partial.prototype.renderContent.call( partial, placement ) ) { // Trigger deprecated event. $( document ).trigger( 'customize-preview-menu-refreshed', [ { instanceNumber: null, // @deprecated wpNavArgs: placement.context, // @deprecated wpNavMenuArgs: placement.context, oldContainer: previousContainer, newContainer: placement.container } ] ); } } }); api.selectiveRefresh.partialConstructor.nav_menu_instance = self.NavMenuInstancePartial; /** * Request full refresh if there are nav menu instances that lack partials which also match the supplied args. * * @param {object} navMenuInstanceArgs */ self.handleUnplacedNavMenuInstances = function( navMenuInstanceArgs ) { var unplacedNavMenuInstances; unplacedNavMenuInstances = _.filter( _.values( self.data.navMenuInstanceArgs ), function( args ) { return ! api.selectiveRefresh.partial.has( 'nav_menu_instance[' + args.args_hmac + ']' ); } ); if ( _.findWhere( unplacedNavMenuInstances, navMenuInstanceArgs ) ) { api.selectiveRefresh.requestFullRefresh(); return true; } return false; }; /** * Add change listener for a nav_menu[], nav_menu_item[], or nav_menu_locations[] setting. * * @since 4.5.0 * * @param {wp.customize.Value} setting * @param {object} [options] * @param {boolean} options.fire Whether to invoke the callback after binding. * This is used when a dynamic setting is added. * @return {boolean} Whether the setting was bound. */ self.bindSettingListener = function( setting, options ) { var matches; options = options || {}; matches = setting.id.match( /^nav_menu\[(-?\d+)]$/ ); if ( matches ) { setting._navMenuId = parseInt( matches[1], 10 ); setting.bind( this.onChangeNavMenuSetting ); if ( options.fire ) { this.onChangeNavMenuSetting.call( setting, setting(), false ); } return true; } matches = setting.id.match( /^nav_menu_item\[(-?\d+)]$/ ); if ( matches ) { setting._navMenuItemId = parseInt( matches[1], 10 ); setting.bind( this.onChangeNavMenuItemSetting ); if ( options.fire ) { this.onChangeNavMenuItemSetting.call( setting, setting(), false ); } return true; } matches = setting.id.match( /^nav_menu_locations\[(.+?)]/ ); if ( matches ) { setting._navMenuThemeLocation = matches[1]; setting.bind( this.onChangeNavMenuLocationsSetting ); if ( options.fire ) { this.onChangeNavMenuLocationsSetting.call( setting, setting(), false ); } return true; } return false; }; /** * Remove change listeners for nav_menu[], nav_menu_item[], or nav_menu_locations[] setting. * * @since 4.5.0 * * @param {wp.customize.Value} setting */ self.unbindSettingListener = function( setting ) { setting.unbind( this.onChangeNavMenuSetting ); setting.unbind( this.onChangeNavMenuItemSetting ); setting.unbind( this.onChangeNavMenuLocationsSetting ); }; /** * Handle change for nav_menu[] setting for nav menu instances lacking partials. * * @since 4.5.0 * * @this {wp.customize.Value} */ self.onChangeNavMenuSetting = function() { var setting = this; self.handleUnplacedNavMenuInstances( { menu: setting._navMenuId } ); // Ensure all nav menu instances with a theme_location assigned to this menu are handled. api.each( function( otherSetting ) { if ( ! otherSetting._navMenuThemeLocation ) { return; } if ( setting._navMenuId === otherSetting() ) { self.handleUnplacedNavMenuInstances( { theme_location: otherSetting._navMenuThemeLocation } ); } } ); }; /** * Handle change for nav_menu_item[] setting for nav menu instances lacking partials. * * @since 4.5.0 * * @param {object} newItem New value for nav_menu_item[] setting. * @param {object} oldItem Old value for nav_menu_item[] setting. * @this {wp.customize.Value} */ self.onChangeNavMenuItemSetting = function( newItem, oldItem ) { var item = newItem || oldItem, navMenuSetting; navMenuSetting = api( 'nav_menu[' + String( item.nav_menu_term_id ) + ']' ); if ( navMenuSetting ) { self.onChangeNavMenuSetting.call( navMenuSetting ); } }; /** * Handle change for nav_menu_locations[] setting for nav menu instances lacking partials. * * @since 4.5.0 * * @this {wp.customize.Value} */ self.onChangeNavMenuLocationsSetting = function() { var setting = this, hasNavMenuInstance; self.handleUnplacedNavMenuInstances( { theme_location: setting._navMenuThemeLocation } ); // If there are no wp_nav_menu() instances that refer to the theme location, do full refresh. hasNavMenuInstance = !! _.findWhere( _.values( self.data.navMenuInstanceArgs ), { theme_location: setting._navMenuThemeLocation } ); if ( ! hasNavMenuInstance ) { api.selectiveRefresh.requestFullRefresh(); } }; } /** * Connect nav menu items with their corresponding controls in the pane. * * Setup shift-click on nav menu items which are more granular than the nav menu partial itself. * Also this applies even if a nav menu is not partial-refreshable. * * @since 4.5.0 */ self.highlightControls = function() { var selector = '.menu-item'; // Skip adding highlights if not in the customizer preview iframe. if ( ! api.settings.channel ) { return; } // Focus on the menu item control when shift+clicking the menu item. $( document ).on( 'click', selector, function( e ) { var navMenuItemParts; if ( ! e.shiftKey ) { return; } navMenuItemParts = $( this ).attr( 'class' ).match( /(?:^|\s)menu-item-(-?\d+)(?:\s|$)/ ); if ( navMenuItemParts ) { e.preventDefault(); e.stopPropagation(); // Make sure a sub-nav menu item will get focused instead of parent items. api.preview.send( 'focus-nav-menu-item-control', parseInt( navMenuItemParts[1], 10 ) ); } }); }; api.bind( 'preview-ready', function() { self.init(); } ); return self; }( jQuery, _, wp, wp.customize ) );

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