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