/**

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* @output wp-admin/js/customize-controls.js

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*/

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/* global _wpCustomizeHeader, _wpCustomizeBackground, _wpMediaViewsL10n, MediaElementPlayer, console, confirm */

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(function( exports, $ ){

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var Container, focus, normalizedTransitionendEventName, api = wp.customize;

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api.OverlayNotification = api.Notification.extend(/** @lends wp.customize.OverlayNotification.prototype */{

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/**

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* Whether the notification should show a loading spinner.

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*

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* @since 4.9.0

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* @var {boolean}

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*/

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loading: false,

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/**

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* A notification that is displayed in a full-screen overlay.

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*

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* @constructs wp.customize.OverlayNotification

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* @augments wp.customize.Notification

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*

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* @since 4.9.0

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*

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* @param {string} code - Code.

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* @param {Object} params - Params.

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*/

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initialize: function( code, params ) {

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var notification = this;

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api.Notification.prototype.initialize.call( notification, code, params );

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notification.containerClasses += ' notification-overlay';

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if ( notification.loading ) {

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notification.containerClasses += ' notification-loading';

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}

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},

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/**

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* Render notification.

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*

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* @since 4.9.0

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*

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* @return {jQuery} Notification container.

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*/

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render: function() {

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var li = api.Notification.prototype.render.call( this );

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li.on( 'keydown', _.bind( this.handleEscape, this ) );

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return li;

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},

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/**

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* Stop propagation on escape key presses, but also dismiss notification if it is dismissible.

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*

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* @since 4.9.0

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*

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* @param {jQuery.Event} event - Event.

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* @return {void}

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*/

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handleEscape: function( event ) {

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var notification = this;

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if ( 27 === event.which ) {

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event.stopPropagation();

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if ( notification.dismissible && notification.parent ) {

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notification.parent.remove( notification.code );

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}

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}

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}

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});

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api.Notifications = api.Values.extend(/** @lends wp.customize.Notifications.prototype */{

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/**

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* Whether the alternative style should be used.

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*

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* @since 4.9.0

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* @type {boolean}

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*/

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alt: false,

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/**

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* The default constructor for items of the collection.

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*

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* @since 4.9.0

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* @type {object}

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*/

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defaultConstructor: api.Notification,

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/**

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* A collection of observable notifications.

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*

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* @since 4.9.0

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*

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* @constructs wp.customize.Notifications

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* @augments wp.customize.Values

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*

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* @param {Object} options - Options.

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* @param {jQuery} [options.container] - Container element for notifications. This can be injected later.

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* @param {boolean} [options.alt] - Whether alternative style should be used when rendering notifications.

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*

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* @return {void}

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*/

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initialize: function( options ) {

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var collection = this;

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api.Values.prototype.initialize.call( collection, options );

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_.bindAll( collection, 'constrainFocus' );

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// Keep track of the order in which the notifications were added for sorting purposes.

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collection._addedIncrement = 0;

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collection._addedOrder = {};

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// Trigger change event when notification is added or removed.

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collection.bind( 'add', function( notification ) {

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collection.trigger( 'change', notification );

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});

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collection.bind( 'removed', function( notification ) {

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collection.trigger( 'change', notification );

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});

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},

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/**

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* Get the number of notifications added.

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*

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* @since 4.9.0

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* @return {number} Count of notifications.

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*/

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count: function() {

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return _.size( this._value );

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},

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/**

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* Add notification to the collection.

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*

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* @since 4.9.0

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*

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* @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.

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* @param {wp.customize.Notification} [notificationObject] - Notification to add when first argument is the code string.

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* @return {wp.customize.Notification} Added notification (or existing instance if it was already added).

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*/

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add: function( notification, notificationObject ) {

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var collection = this, code, instance;

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if ( 'string' === typeof notification ) {

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code = notification;

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instance = notificationObject;

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} else {

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code = notification.code;

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instance = notification;

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}

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if ( ! collection.has( code ) ) {

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collection._addedIncrement += 1;

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collection._addedOrder[ code ] = collection._addedIncrement;

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}

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return api.Values.prototype.add.call( collection, code, instance );

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},

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/**

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* Add notification to the collection.

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*

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* @since 4.9.0

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* @param {string} code - Notification code to remove.

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* @return {api.Notification} Added instance (or existing instance if it was already added).

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*/

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remove: function( code ) {

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var collection = this;

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delete collection._addedOrder[ code ];

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return api.Values.prototype.remove.call( this, code );

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},

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/**

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* Get list of notifications.

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*

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* Notifications may be sorted by type followed by added time.

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*

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* @since 4.9.0

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* @param {Object} args - Args.

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* @param {boolean} [args.sort=false] - Whether to return the notifications sorted.

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* @return {Array.<wp.customize.Notification>} Notifications.

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*/

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get: function( args ) {

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var collection = this, notifications, errorTypePriorities, params;

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notifications = _.values( collection._value );

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params = _.extend(

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{ sort: false },

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args

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);

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if ( params.sort ) {

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errorTypePriorities = { error: 4, warning: 3, success: 2, info: 1 };

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notifications.sort( function( a, b ) {

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var aPriority = 0, bPriority = 0;

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if ( ! _.isUndefined( errorTypePriorities[ a.type ] ) ) {

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aPriority = errorTypePriorities[ a.type ];

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}

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if ( ! _.isUndefined( errorTypePriorities[ b.type ] ) ) {

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bPriority = errorTypePriorities[ b.type ];

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}

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if ( aPriority !== bPriority ) {

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return bPriority - aPriority; // Show errors first.

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}

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return collection._addedOrder[ b.code ] - collection._addedOrder[ a.code ]; // Show newer notifications higher.

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});

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}

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return notifications;

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},

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/**

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* Render notifications area.

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*

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* @since 4.9.0

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* @return {void}

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*/

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render: function() {

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var collection = this,

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notifications, hadOverlayNotification = false, hasOverlayNotification, overlayNotifications = [],

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previousNotificationsByCode = {},

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listElement, focusableElements;

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// Short-circuit if there are no container to render into.

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if ( ! collection.container || ! collection.container.length ) {

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return;

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}

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notifications = collection.get( { sort: true } );

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collection.container.toggle( 0 !== notifications.length );

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// Short-circuit if there are no changes to the notifications.

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if ( collection.container.is( collection.previousContainer ) && _.isEqual( notifications, collection.previousNotifications ) ) {

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return;

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}

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// Make sure list is part of the container.

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listElement = collection.container.children( 'ul' ).first();

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if ( ! listElement.length ) {

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listElement = $( '<ul></ul>' );

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collection.container.append( listElement );

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}

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// Remove all notifications prior to re-rendering.

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listElement.find( '> [data-code]' ).remove();

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_.each( collection.previousNotifications, function( notification ) {

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previousNotificationsByCode[ notification.code ] = notification;

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});

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// Add all notifications in the sorted order.

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_.each( notifications, function( notification ) {

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var notificationContainer;

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if ( wp.a11y && ( ! previousNotificationsByCode[ notification.code ] || ! _.isEqual( notification.message, previousNotificationsByCode[ notification.code ].message ) ) ) {

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wp.a11y.speak( notification.message, 'assertive' );

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}

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notificationContainer = $( notification.render() );

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notification.container = notificationContainer;

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listElement.append( notificationContainer ); // @todo Consider slideDown() as enhancement.

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if ( notification.extended( api.OverlayNotification ) ) {

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overlayNotifications.push( notification );

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}

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});

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hasOverlayNotification = Boolean( overlayNotifications.length );

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if ( collection.previousNotifications ) {

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hadOverlayNotification = Boolean( _.find( collection.previousNotifications, function( notification ) {

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return notification.extended( api.OverlayNotification );

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} ) );

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}

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if ( hasOverlayNotification !== hadOverlayNotification ) {

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$( document.body ).toggleClass( 'customize-loading', hasOverlayNotification );

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collection.container.toggleClass( 'has-overlay-notifications', hasOverlayNotification );

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if ( hasOverlayNotification ) {

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collection.previousActiveElement = document.activeElement;

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$( document ).on( 'keydown', collection.constrainFocus );

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} else {

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$( document ).off( 'keydown', collection.constrainFocus );

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}

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}

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if ( hasOverlayNotification ) {

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collection.focusContainer = overlayNotifications[ overlayNotifications.length - 1 ].container;

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collection.focusContainer.prop( 'tabIndex', -1 );

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focusableElements = collection.focusContainer.find( ':focusable' );

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if ( focusableElements.length ) {

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focusableElements.first().focus();

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} else {

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collection.focusContainer.focus();

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}

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} else if ( collection.previousActiveElement ) {

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$( collection.previousActiveElement ).focus();

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collection.previousActiveElement = null;

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}

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collection.previousNotifications = notifications;

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collection.previousContainer = collection.container;

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collection.trigger( 'rendered' );

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},

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/**

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* Constrain focus on focus container.

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*

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* @since 4.9.0

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*

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* @param {jQuery.Event} event - Event.

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* @return {void}

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*/

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constrainFocus: function constrainFocus( event ) {

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var collection = this, focusableElements;

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// Prevent keys from escaping.

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event.stopPropagation();

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if ( 9 !== event.which ) { // Tab key.

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return;

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}

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focusableElements = collection.focusContainer.find( ':focusable' );

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if ( 0 === focusableElements.length ) {

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focusableElements = collection.focusContainer;

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}

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if ( ! $.contains( collection.focusContainer[0], event.target ) || ! $.contains( collection.focusContainer[0], document.activeElement ) ) {

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event.preventDefault();

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focusableElements.first().focus();

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} else if ( focusableElements.last().is( event.target ) && ! event.shiftKey ) {

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event.preventDefault();

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focusableElements.first().focus();

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} else if ( focusableElements.first().is( event.target ) && event.shiftKey ) {

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event.preventDefault();

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focusableElements.last().focus();

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}

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}

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});

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api.Setting = api.Value.extend(/** @lends wp.customize.Setting.prototype */{

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/**

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* Default params.

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*

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* @since 4.9.0

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* @var {object}

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*/

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defaults: {

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transport: 'refresh',

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dirty: false

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},

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/**

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* A Customizer Setting.

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*

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* A setting is WordPress data (theme mod, option, menu, etc.) that the user can

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* draft changes to in the Customizer.

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*

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* @see PHP class WP_Customize_Setting.

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*

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* @constructs wp.customize.Setting

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* @augments wp.customize.Value

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*

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* @since 3.4.0

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*

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* @param {string} id - The setting ID.

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* @param {*} value - The initial value of the setting.

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* @param {Object} [options={}] - Options.

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* @param {string} [options.transport=refresh] - The transport to use for previewing. Supports 'refresh' and 'postMessage'.

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* @param {boolean} [options.dirty=false] - Whether the setting should be considered initially dirty.

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* @param {Object} [options.previewer] - The Previewer instance to sync with. Defaults to wp.customize.previewer.

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*/

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initialize: function( id, value, options ) {

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var setting = this, params;

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params = _.extend(

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{ previewer: api.previewer },

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setting.defaults,

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options || {}

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);

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api.Value.prototype.initialize.call( setting, value, params );

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setting.id = id;

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setting._dirty = params.dirty; // The _dirty property is what the Customizer reads from.

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setting.notifications = new api.Notifications();

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// Whenever the setting's value changes, refresh the preview.

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setting.bind( setting.preview );

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},

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/**

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* Refresh the preview, respective of the setting's refresh policy.

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*

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* If the preview hasn't sent a keep-alive message and is likely

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* disconnected by having navigated to a non-allowed URL, then the

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* refresh transport will be forced when postMessage is the transport.

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* Note that postMessage does not throw an error when the recipient window

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* fails to match the origin window, so using try/catch around the

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* previewer.send() call to then fallback to refresh will not work.

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*

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* @since 3.4.0

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* @access public

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*

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* @return {void}

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*/

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preview: function() {

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var setting = this, transport;

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transport = setting.transport;

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if ( 'postMessage' === transport && ! api.state( 'previewerAlive' ).get() ) {

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transport = 'refresh';

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}

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if ( 'postMessage' === transport ) {

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setting.previewer.send( 'setting', [ setting.id, setting() ] );

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} else if ( 'refresh' === transport ) {

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setting.previewer.refresh();

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}

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},

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/**

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* Find controls associated with this setting.

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*

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* @since 4.6.0

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* @return {wp.customize.Control[]} Controls associated with setting.

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*/

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findControls: function() {

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var setting = this, controls = [];

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api.control.each( function( control ) {

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_.each( control.settings, function( controlSetting ) {

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if ( controlSetting.id === setting.id ) {

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controls.push( control );

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}

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} );

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} );

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return controls;

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}

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});

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/**

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* Current change count.

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*

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* @alias wp.customize._latestRevision

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*

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* @since 4.7.0

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* @type {number}

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* @protected

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*/

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api._latestRevision = 0;

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/**

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* Last revision that was saved.

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*

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* @alias wp.customize._lastSavedRevision

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*

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* @since 4.7.0

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* @type {number}

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* @protected

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*/

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api._lastSavedRevision = 0;

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/**

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* Latest revisions associated with the updated setting.

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*

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* @alias wp.customize._latestSettingRevisions

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*

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* @since 4.7.0

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* @type {object}

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* @protected

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*/

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api._latestSettingRevisions = {};

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/*

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* Keep track of the revision associated with each updated setting so that

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* requestChangesetUpdate knows which dirty settings to include. Also, once

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* ready is triggered and all initial settings have been added, increment

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* revision for each newly-created initially-dirty setting so that it will

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* also be included in changeset update requests.

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*/

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api.bind( 'change', function incrementChangedSettingRevision( setting ) {

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api._latestRevision += 1;

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api._latestSettingRevisions[ setting.id ] = api._latestRevision;

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} );

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api.bind( 'ready', function() {

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api.bind( 'add', function incrementCreatedSettingRevision( setting ) {

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if ( setting._dirty ) {

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api._latestRevision += 1;

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api._latestSettingRevisions[ setting.id ] = api._latestRevision;

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}

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} );

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} );

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/**

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* Get the dirty setting values.

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*

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* @alias wp.customize.dirtyValues

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*

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* @since 4.7.0

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* @access public

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*

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* @param {Object} [options] Options.

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* @param {boolean} [options.unsaved=false] Whether only values not saved yet into a changeset will be returned (differential changes).

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* @return {Object} Dirty setting values.

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