wp-admin/js/customize-controls.js

   1 (function( exports, $ ){
   2         var api = wp.customize;
   3
   4         /*
   5          * @param options
   6          * - previewer - The Previewer instance to sync with.
   7          * - transport - The transport to use for previewing. Supports 'refresh' and 'postMessage'.
   8          */
   9         api.Setting = api.Value.extend({
  10                 initialize: function( id, value, options ) {
  11                         var element;
  12
  13                         api.Value.prototype.initialize.call( this, value, options );
  14
  15                         this.id = id;
  16                         this.transport = this.transport || 'refresh';
  17
  18                         this.bind( this.preview );
  19                 },
  20                 preview: function() {
  21                         switch ( this.transport ) {
  22                                 case 'refresh':
  23                                         return this.previewer.refresh();
  24                                 case 'postMessage':
  25                                         return this.previewer.send( 'setting', [ this.id, this() ] );
  26                         }
  27                 }
  28         });
  29
  30         api.Control = api.Class.extend({
  31                 initialize: function( id, options ) {
  32                         var control = this,
  33                                 nodes, radios, settings;
  34
  35                         this.params = {};
  36                         $.extend( this, options || {} );
  37
  38                         this.id = id;
  39                         this.selector = '#customize-control-' + id.replace( /\]/g, '' ).replace( /\[/g, '-' );
  40                         this.container = $( this.selector );
  41
  42                         settings = $.map( this.params.settings, function( value ) {
  43                                 return value;
  44                         });
  45
  46                         api.apply( api, settings.concat( function() {
  47                                 var key;
  48
  49                                 control.settings = {};
  50                                 for ( key in control.params.settings ) {
  51                                         control.settings[ key ] = api( control.params.settings[ key ] );
  52                                 }
  53
  54                                 control.setting = control.settings['default'] || null;
  55                                 control.ready();
  56                         }) );
  57
  58                         control.elements = [];
  59
  60                         nodes  = this.container.find('[data-customize-setting-link]');
  61                         radios = {};
  62
  63                         nodes.each( function() {
  64                                 var node = $(this),
  65                                         name;
  66
  67                                 if ( node.is(':radio') ) {
  68                                         name = node.prop('name');
  69                                         if ( radios[ name ] )
  70                                                 return;
  71
  72                                         radios[ name ] = true;
  73                                         node = nodes.filter( '[name="' + name + '"]' );
  74                                 }
  75
  76                                 api( node.data('customizeSettingLink'), function( setting ) {
  77                                         var element = new api.Element( node );
  78                                         control.elements.push( element );
  79                                         element.sync( setting );
  80                                         element.set( setting() );
  81                                 });
  82                         });
  83                 },
  84
  85                 ready: function() {},
  86
  87                 dropdownInit: function() {
  88                         var control  = this,
  89                                 statuses = this.container.find('.dropdown-status'),
  90                                 params   = this.params,
  91                                 update   = function( to ) {
  92                                         if ( typeof     to === 'string' && params.statuses && params.statuses[ to ] )
  93                                                 statuses.html( params.statuses[ to ] ).show();
  94                                         else
  95                                                 statuses.hide();
  96                                 };
  97
  98                         var toggleFreeze = false;
  99
 100                         // Support the .dropdown class to open/close complex elements
 101                         this.container.on( 'click keydown', '.dropdown', function( event ) {
 102                                 if ( event.type === 'keydown' &&  13 !== event.which ) // enter
 103                                         return;
 104
 105                                 event.preventDefault();
 106
 107                                 if (!toggleFreeze)
 108                                         control.container.toggleClass('open');
 109
 110                                 if ( control.container.hasClass('open') )
 111                                         control.container.parent().parent().find('li.library-selected').focus();
 112
 113                                 // Don't want to fire focus and click at same time
 114                                 toggleFreeze = true;
 115                                 setTimeout(function () {
 116                                         toggleFreeze = false;
 117                                 }, 400);
 118                         });
 119
 120                         this.setting.bind( update );
 121                         update( this.setting() );
 122                 }
 123         });
 124
 125         api.ColorControl = api.Control.extend({
 126                 ready: function() {
 127                         var control = this,
 128                                 picker = this.container.find('.color-picker-hex');
 129
 130                         picker.val( control.setting() ).wpColorPicker({
 131                                 change: function( event, options ) {
 132                                         control.setting.set( picker.wpColorPicker('color') );
 133                                 },
 134                                 clear: function() {
 135                                         control.setting.set( false );
 136                                 }
 137                         });
 138                 }
 139         });
 140
 141         api.UploadControl = api.Control.extend({
 142                 ready: function() {
 143                         var control = this;
 144
 145                         this.params.removed = this.params.removed || '';
 146
 147                         this.success = $.proxy( this.success, this );
 148
 149                         this.uploader = $.extend({
 150                                 container: this.container,
 151                                 browser:   this.container.find('.upload'),
 152                                 dropzone:  this.container.find('.upload-dropzone'),
 153                                 success:   this.success,
 154                                 plupload:  {},
 155                                 params:    {}
 156                         }, this.uploader || {} );
 157
 158                         if ( control.params.extensions ) {
 159                                 control.uploader.plupload.filters = [{
 160                                         title:      api.l10n.allowedFiles,
 161                                         extensions: control.params.extensions
 162                                 }];
 163                         }
 164
 165                         if ( control.params.context )
 166                                 control.uploader.params['post_data[context]'] = this.params.context;
 167
 168                         if ( api.settings.theme.stylesheet )
 169                                 control.uploader.params['post_data[theme]'] = api.settings.theme.stylesheet;
 170
 171                         this.uploader = new wp.Uploader( this.uploader );
 172
 173                         this.remover = this.container.find('.remove');
 174                         this.remover.on( 'click keydown', function( event ) {
 175                                 if ( event.type === 'keydown' &&  13 !== event.which ) // enter
 176                                         return;
 177
 178                                 control.setting.set( control.params.removed );
 179                                 event.preventDefault();
 180                         });
 181
 182                         this.removerVisibility = $.proxy( this.removerVisibility, this );
 183                         this.setting.bind( this.removerVisibility );
 184                         this.removerVisibility( this.setting.get() );
 185                 },
 186                 success: function( attachment ) {
 187                         this.setting.set( attachment.get('url') );
 188                 },
 189                 removerVisibility: function( to ) {
 190                         this.remover.toggle( to != this.params.removed );
 191                 }
 192         });
 193
 194         api.ImageControl = api.UploadControl.extend({
 195                 ready: function() {
 196                         var control = this,
 197                                 panels;
 198
 199                         this.uploader = {
 200                                 init: function( up ) {
 201                                         var fallback, button;
 202
 203                                         if ( this.supports.dragdrop )
 204                                                 return;
 205
 206                                         // Maintain references while wrapping the fallback button.
 207                                         fallback = control.container.find( '.upload-fallback' );
 208                                         button   = fallback.children().detach();
 209
 210                                         this.browser.detach().empty().append( button );
 211                                         fallback.append( this.browser ).show();
 212                                 }
 213                         };
 214
 215                         api.UploadControl.prototype.ready.call( this );
 216
 217                         this.thumbnail    = this.container.find('.preview-thumbnail img');
 218                         this.thumbnailSrc = $.proxy( this.thumbnailSrc, this );
 219                         this.setting.bind( this.thumbnailSrc );
 220
 221                         this.library = this.container.find('.library');
 222
 223                         // Generate tab objects
 224                         this.tabs = {};
 225                         panels    = this.library.find('.library-content');
 226
 227                         this.library.children('ul').children('li').each( function() {
 228                                 var link  = $(this),
 229                                         id    = link.data('customizeTab'),
 230                                         panel = panels.filter('[data-customize-tab="' + id + '"]');
 231
 232                                 control.tabs[ id ] = {
 233                                         both:  link.add( panel ),
 234                                         link:  link,
 235                                         panel: panel
 236                                 };
 237                         });
 238
 239                         // Bind tab switch events
 240                         this.library.children('ul').on( 'click keydown', 'li', function( event ) {
 241                                 if ( event.type === 'keydown' &&  13 !== event.which ) // enter
 242                                         return;
 243
 244                                 var id  = $(this).data('customizeTab'),
 245                                         tab = control.tabs[ id ];
 246
 247                                 event.preventDefault();
 248
 249                                 if ( tab.link.hasClass('library-selected') )
 250                                         return;
 251
 252                                 control.selected.both.removeClass('library-selected');
 253                                 control.selected = tab;
 254                                 control.selected.both.addClass('library-selected');
 255                         });
 256
 257                         // Bind events to switch image urls.
 258                         this.library.on( 'click keydown', 'a', function( event ) {
 259                                 if ( event.type === 'keydown' && 13 !== event.which ) // enter
 260                                         return;
 261
 262                                 var value = $(this).data('customizeImageValue');
 263
 264                                 if ( value ) {
 265                                         control.setting.set( value );
 266                                         event.preventDefault();
 267                                 }
 268                         });
 269
 270                         if ( this.tabs.uploaded ) {
 271                                 this.tabs.uploaded.target = this.library.find('.uploaded-target');
 272                                 if ( ! this.tabs.uploaded.panel.find('.thumbnail').length )
 273                                         this.tabs.uploaded.both.addClass('hidden');
 274                         }
 275
 276                         // Select a tab
 277                         panels.each( function() {
 278                                 var tab = control.tabs[ $(this).data('customizeTab') ];
 279
 280                                 // Select the first visible tab.
 281                                 if ( ! tab.link.hasClass('hidden') ) {
 282                                         control.selected = tab;
 283                                         tab.both.addClass('library-selected');
 284                                         return false;
 285                                 }
 286                         });
 287
 288                         this.dropdownInit();
 289                 },
 290                 success: function( attachment ) {
 291                         api.UploadControl.prototype.success.call( this, attachment );
 292
 293                         // Add the uploaded image to the uploaded tab.
 294                         if ( this.tabs.uploaded && this.tabs.uploaded.target.length ) {
 295                                 this.tabs.uploaded.both.removeClass('hidden');
 296
 297                                 // @todo: Do NOT store this on the attachment model. That is bad.
 298                                 attachment.element = $( '<a href="#" class="thumbnail"></a>' )
 299                                         .data( 'customizeImageValue', attachment.get('url') )
 300                                         .append( '<img src="' +  attachment.get('url')+ '" />' )
 301                                         .appendTo( this.tabs.uploaded.target );
 302                         }
 303                 },
 304                 thumbnailSrc: function( to ) {
 305                         if ( /^(https?:)?\/\//.test( to ) )
 306                                 this.thumbnail.prop( 'src', to ).show();
 307                         else
 308                                 this.thumbnail.hide();
 309                 }
 310         });
 311
 312         // Change objects contained within the main customize object to Settings.
 313         api.defaultConstructor = api.Setting;
 314
 315         // Create the collection of Control objects.
 316         api.control = new api.Values({ defaultConstructor: api.Control });
 317
 318         api.PreviewFrame = api.Messenger.extend({
 319                 sensitivity: 2000,
 320
 321                 initialize: function( params, options ) {
 322                         var deferred = $.Deferred(),
 323                                 self     = this;
 324
 325                         // This is the promise object.
 326                         deferred.promise( this );
 327
 328                         this.container = params.container;
 329                         this.signature = params.signature;
 330
 331                         $.extend( params, { channel: api.PreviewFrame.uuid() });
 332
 333                         api.Messenger.prototype.initialize.call( this, params, options );
 334
 335                         this.add( 'previewUrl', params.previewUrl );
 336
 337                         this.query = $.extend( params.query || {}, { customize_messenger_channel: this.channel() });
 338
 339                         this.run( deferred );
 340                 },
 341
 342                 run: function( deferred ) {
 343                         var self   = this,
 344                                 loaded = false,
 345                                 ready  = false;
 346
 347                         if ( this._ready )
 348                                 this.unbind( 'ready', this._ready );
 349
 350                         this._ready = function() {
 351                                 ready = true;
 352
 353                                 if ( loaded )
 354                                         deferred.resolveWith( self );
 355                         };
 356
 357                         this.bind( 'ready', this._ready );
 358
 359                         this.request = $.ajax( this.previewUrl(), {
 360                                 type: 'POST',
 361                                 data: this.query,
 362                                 xhrFields: {
 363                                         withCredentials: true
 364                                 }
 365                         } );
 366
 367                         this.request.fail( function() {
 368                                 deferred.rejectWith( self, [ 'request failure' ] );
 369                         });
 370
 371                         this.request.done( function( response ) {
 372                                 var location = self.request.getResponseHeader('Location'),
 373                                         signature = self.signature,
 374                                         index;
 375
 376                                 // Check if the location response header differs from the current URL.
 377                                 // If so, the request was redirected; try loading the requested page.
 378                                 if ( location && location != self.previewUrl() ) {
 379                                         deferred.rejectWith( self, [ 'redirect', location ] );
 380                                         return;
 381                                 }
 382
 383                                 // Check if the user is not logged in.
 384                                 if ( '0' === response ) {
 385                                         self.login( deferred );
 386                                         return;
 387                                 }
 388
 389                                 // Check for cheaters.
 390                                 if ( '-1' === response ) {
 391                                         deferred.rejectWith( self, [ 'cheatin' ] );
 392                                         return;
 393                                 }
 394
 395                                 // Check for a signature in the request.
 396                                 index = response.lastIndexOf( signature );
 397                                 if ( -1 === index || index < response.lastIndexOf('</html>') ) {
 398                                         deferred.rejectWith( self, [ 'unsigned' ] );
 399                                         return;
 400                                 }
 401
 402                                 // Strip the signature from the request.
 403                                 response = response.slice( 0, index ) + response.slice( index + signature.length );
 404
 405                                 // Create the iframe and inject the html content.
 406                                 self.iframe = $('<iframe />').appendTo( self.container );
 407
 408                                 // Bind load event after the iframe has been added to the page;
 409                                 // otherwise it will fire when injected into the DOM.
 410                                 self.iframe.one( 'load', function() {
 411                                         loaded = true;
 412
 413                                         if ( ready ) {
 414                                                 deferred.resolveWith( self );
 415                                         } else {
 416                                                 setTimeout( function() {
 417                                                         deferred.rejectWith( self, [ 'ready timeout' ] );
 418                                                 }, self.sensitivity );
 419                                         }
 420                                 });
 421
 422                                 self.targetWindow( self.iframe[0].contentWindow );
 423
 424                                 self.targetWindow().document.open();
 425                                 self.targetWindow().document.write( response );
 426                                 self.targetWindow().document.close();
 427                         });
 428                 },
 429
 430                 login: function( deferred ) {
 431                         var self = this,
 432                                 reject;
 433
 434                         reject = function() {
 435                                 deferred.rejectWith( self, [ 'logged out' ] );
 436                         };
 437
 438                         if ( this.triedLogin )
 439                                 return reject();
 440
 441                         // Check if we have an admin cookie.
 442                         $.get( api.settings.url.ajax, {
 443                                 action: 'logged-in'
 444                         }).fail( reject ).done( function( response ) {
 445                                 var iframe;
 446
 447                                 if ( '1' !== response )
 448                                         reject();
 449
 450                                 iframe = $('<iframe src="' + self.previewUrl() + '" />').hide();
 451                                 iframe.appendTo( self.container );
 452                                 iframe.load( function() {
 453                                         self.triedLogin = true;
 454
 455                                         iframe.remove();
 456                                         self.run( deferred );
 457                                 });
 458                         });
 459                 },
 460
 461                 destroy: function() {
 462                         api.Messenger.prototype.destroy.call( this );
 463                         this.request.abort();
 464
 465                         if ( this.iframe )
 466                                 this.iframe.remove();
 467
 468                         delete this.request;
 469                         delete this.iframe;
 470                         delete this.targetWindow;
 471                 }
 472         });
 473
 474         (function(){
 475                 var uuid = 0;
 476                 api.PreviewFrame.uuid = function() {
 477                         return 'preview-' + uuid++;
 478                 };
 479         }());
 480
 481         api.Previewer = api.Messenger.extend({
 482                 refreshBuffer: 250,
 483
 484                 /**
 485                  * Requires params:
 486                  *  - container  - a selector or jQuery element
 487                  *  - previewUrl - the URL of preview frame
 488                  */
 489                 initialize: function( params, options ) {
 490                         var self = this,
 491                                 rscheme = /^https?/,
 492                                 url;
 493
 494                         $.extend( this, options || {} );
 495
 496                         /*
 497                          * Wrap this.refresh to prevent it from hammering the servers:
 498                          *
 499                          * If refresh is called once and no other refresh requests are
 500                          * loading, trigger the request immediately.
 501                          *
 502                          * If refresh is called while another refresh request is loading,
 503                          * debounce the refresh requests:
 504                          * 1. Stop the loading request (as it is instantly outdated).
 505                          * 2. Trigger the new request once refresh hasn't been called for
 506                          *    self.refreshBuffer milliseconds.
 507                          */
 508                         this.refresh = (function( self ) {
 509                                 var refresh  = self.refresh,
 510                                         callback = function() {
 511                                                 timeout = null;
 512                                                 refresh.call( self );
 513                                         },
 514                                         timeout;
 515
 516                                 return function() {
 517                                         if ( typeof timeout !== 'number' ) {
 518                                                 if ( self.loading ) {
 519                                                         self.abort();
 520                                                 } else {
 521                                                         return callback();
 522                                                 }
 523                                         }
 524
 525                                         clearTimeout( timeout );
 526                                         timeout = setTimeout( callback, self.refreshBuffer );
 527                                 };
 528                         })( this );
 529
 530                         this.container   = api.ensure( params.container );
 531                         this.allowedUrls = params.allowedUrls;
 532                         this.signature   = params.signature;
 533
 534                         params.url = window.location.href;
 535
 536                         api.Messenger.prototype.initialize.call( this, params );
 537
 538                         this.add( 'scheme', this.origin() ).link( this.origin ).setter( function( to ) {
 539                                 var match = to.match( rscheme );
 540                                 return match ? match[0] : '';
 541                         });
 542
 543                         // Limit the URL to internal, front-end links.
 544                         //
 545                         // If the frontend and the admin are served from the same domain, load the
 546                         // preview over ssl if the customizer is being loaded over ssl. This avoids
 547                         // insecure content warnings. This is not attempted if the admin and frontend
 548                         // are on different domains to avoid the case where the frontend doesn't have
 549                         // ssl certs.
 550
 551                         this.add( 'previewUrl', params.previewUrl ).setter( function( to ) {
 552                                 var result;
 553
 554                                 // Check for URLs that include "/wp-admin/" or end in "/wp-admin".
 555                                 // Strip hashes and query strings before testing.
 556                                 if ( /\/wp-admin(\/|$)/.test( to.replace( /[#?].*$/, '' ) ) )
 557                                         return null;
 558
 559                                 // Attempt to match the URL to the control frame's scheme
 560                                 // and check if it's allowed. If not, try the original URL.
 561                                 $.each([ to.replace( rscheme, self.scheme() ), to ], function( i, url ) {
 562                                         $.each( self.allowedUrls, function( i, allowed ) {
 563                                                 var path;
 564
 565                                                 allowed = allowed.replace( /\/+$/, '' );
 566                                                 path = url.replace( allowed, '' );
 567
 568                                                 if ( 0 === url.indexOf( allowed ) && /^([/#?]|$)/.test( path ) ) {
 569                                                         result = url;
 570                                                         return false;
 571                                                 }
 572                                         });
 573                                         if ( result )
 574                                                 return false;
 575                                 });
 576
 577                                 // If we found a matching result, return it. If not, bail.
 578                                 return result ? result : null;
 579                         });
 580
 581                         // Refresh the preview when the URL is changed (but not yet).
 582                         this.previewUrl.bind( this.refresh );
 583
 584                         this.scroll = 0;
 585                         this.bind( 'scroll', function( distance ) {
 586                                 this.scroll = distance;
 587                         });
 588
 589                         // Update the URL when the iframe sends a URL message.
 590                         this.bind( 'url', this.previewUrl );
 591                 },
 592
 593                 query: function() {},
 594
 595                 abort: function() {
 596                         if ( this.loading ) {
 597                                 this.loading.destroy();
 598                                 delete this.loading;
 599                         }
 600                 },
 601
 602                 refresh: function() {
 603                         var self = this;
 604
 605                         this.abort();
 606
 607                         this.loading = new api.PreviewFrame({
 608                                 url:        this.url(),
 609                                 previewUrl: this.previewUrl(),
 610                                 query:      this.query() || {},
 611                                 container:  this.container,
 612                                 signature:  this.signature
 613                         });
 614
 615                         this.loading.done( function() {
 616                                 // 'this' is the loading frame
 617                                 this.bind( 'synced', function() {
 618                                         if ( self.preview )
 619                                                 self.preview.destroy();
 620                                         self.preview = this;
 621                                         delete self.loading;
 622
 623                                         self.targetWindow( this.targetWindow() );
 624                                         self.channel( this.channel() );
 625
 626                                         self.send( 'active' );
 627                                 });
 628
 629                                 this.send( 'sync', {
 630                                         scroll:   self.scroll,
 631                                         settings: api.get()
 632                                 });
 633                         });
 634
 635                         this.loading.fail( function( reason, location ) {
 636                                 if ( 'redirect' === reason && location )
 637                                         self.previewUrl( location );
 638
 639                                 if ( 'logged out' === reason ) {
 640                                         if ( self.preview ) {
 641                                                 self.preview.destroy();
 642                                                 delete self.preview;
 643                                         }
 644
 645                                         self.login().done( self.refresh );
 646                                 }
 647
 648                                 if ( 'cheatin' === reason )
 649                                         self.cheatin();
 650                         });
 651                 },
 652
 653                 login: function() {
 654                         var previewer = this,
 655                                 deferred, messenger, iframe;
 656
 657                         if ( this._login )
 658                                 return this._login;
 659
 660                         deferred = $.Deferred();
 661                         this._login = deferred.promise();
 662
 663                         messenger = new api.Messenger({
 664                                 channel: 'login',
 665                                 url:     api.settings.url.login
 666                         });
 667
 668                         iframe = $('<iframe src="' + api.settings.url.login + '" />').appendTo( this.container );
 669
 670                         messenger.targetWindow( iframe[0].contentWindow );
 671
 672                         messenger.bind( 'login', function() {
 673                                 iframe.remove();
 674                                 messenger.destroy();
 675                                 delete previewer._login;
 676                                 deferred.resolve();
 677                         });
 678
 679                         return this._login;
 680                 },
 681
 682                 cheatin: function() {
 683                         $( document.body ).empty().addClass('cheatin').append( '<p>' + api.l10n.cheatin + '</p>' );
 684                 }
 685         });
 686
 687         /* =====================================================================
 688          * Ready.
 689          * ===================================================================== */
 690
 691         api.controlConstructor = {
 692                 color:  api.ColorControl,
 693                 upload: api.UploadControl,
 694                 image:  api.ImageControl
 695         };
 696
 697         $( function() {
 698                 api.settings = window._wpCustomizeSettings;
 699                 api.l10n = window._wpCustomizeControlsL10n;
 700
 701                 // Check if we can run the customizer.
 702                 if ( ! api.settings )
 703                         return;
 704
 705                 // Redirect to the fallback preview if any incompatibilities are found.
 706                 if ( ! $.support.postMessage || ( ! $.support.cors && api.settings.isCrossDomain ) )
 707                         return window.location = api.settings.url.fallback;
 708
 709                 var body = $( document.body ),
 710                         overlay = body.children('.wp-full-overlay'),
 711                         query, previewer, parent;
 712
 713                 // Prevent the form from saving when enter is pressed.
 714                 $('#customize-controls').on( 'keydown', function( e ) {
 715                         if ( $( e.target ).is('textarea') )
 716                                 return;
 717
 718                         if ( 13 === e.which ) // Enter
 719                                 e.preventDefault();
 720                 });
 721
 722                 // Initialize Previewer
 723                 previewer = new api.Previewer({
 724                         container:   '#customize-preview',
 725                         form:        '#customize-controls',
 726                         previewUrl:  api.settings.url.preview,
 727                         allowedUrls: api.settings.url.allowed,
 728                         signature:   'WP_CUSTOMIZER_SIGNATURE'
 729                 }, {
 730
 731                         nonce: api.settings.nonce,
 732
 733                         query: function() {
 734                                 return {
 735                                         wp_customize: 'on',
 736                                         theme:        api.settings.theme.stylesheet,
 737                                         customized:   JSON.stringify( api.get() ),
 738                                         nonce:        this.nonce.preview
 739                                 };
 740                         },
 741
 742                         save: function() {
 743                                 var self  = this,
 744                                         query = $.extend( this.query(), {
 745                                                 action: 'customize_save',
 746                                                 nonce:  this.nonce.save
 747                                         }),
 748                                         request = $.post( api.settings.url.ajax, query );
 749
 750                                 api.trigger( 'save', request );
 751
 752                                 body.addClass('saving');
 753
 754                                 request.always( function() {
 755                                         body.removeClass('saving');
 756                                 });
 757
 758                                 request.done( function( response ) {
 759                                         // Check if the user is logged out.
 760                                         if ( '0' === response ) {
 761                                                 self.preview.iframe.hide();
 762                                                 self.login().done( function() {
 763                                                         self.save();
 764                                                         self.preview.iframe.show();
 765                                                 });
 766                                                 return;
 767                                         }
 768
 769                                         // Check for cheaters.
 770                                         if ( '-1' === response ) {
 771                                                 self.cheatin();
 772                                                 return;
 773                                         }
 774
 775                                         api.trigger( 'saved' );
 776                                 });
 777                         }
 778                 });
 779
 780                 // Refresh the nonces if the preview sends updated nonces over.
 781                 previewer.bind( 'nonce', function( nonce ) {
 782                         $.extend( this.nonce, nonce );
 783                 });
 784
 785                 $.each( api.settings.settings, function( id, data ) {
 786                         api.create( id, id, data.value, {
 787                                 transport: data.transport,
 788                                 previewer: previewer
 789                         } );
 790                 });
 791
 792                 $.each( api.settings.controls, function( id, data ) {
 793                         var constructor = api.controlConstructor[ data.type ] || api.Control,
 794                                 control;
 795
 796                         control = api.control.add( id, new constructor( id, {
 797                                 params: data,
 798                                 previewer: previewer
 799                         } ) );
 800                 });
 801
 802                 // Check if preview url is valid and load the preview frame.
 803                 if ( previewer.previewUrl() )
 804                         previewer.refresh();
 805                 else
 806                         previewer.previewUrl( api.settings.url.home );
 807
 808                 // Save and activated states
 809                 (function() {
 810                         var state = new api.Values(),
 811                                 saved = state.create('saved'),
 812                                 activated = state.create('activated');
 813
 814                         state.bind( 'change', function() {
 815                                 var save = $('#save'),
 816                                         back = $('.back');
 817
 818                                 if ( ! activated() ) {
 819                                         save.val( api.l10n.activate ).prop( 'disabled', false );
 820                                         back.text( api.l10n.cancel );
 821
 822                                 } else if ( saved() ) {
 823                                         save.val( api.l10n.saved ).prop( 'disabled', true );
 824                                         back.text( api.l10n.close );
 825
 826                                 } else {
 827                                         save.val( api.l10n.save ).prop( 'disabled', false );
 828                                         back.text( api.l10n.cancel );
 829                                 }
 830                         });
 831
 832                         // Set default states.
 833                         saved( true );
 834                         activated( api.settings.theme.active );
 835
 836                         api.bind( 'change', function() {
 837                                 state('saved').set( false );
 838                         });
 839
 840                         api.bind( 'saved', function() {
 841                                 state('saved').set( true );
 842                                 state('activated').set( true );
 843                         });
 844
 845                         activated.bind( function( to ) {
 846                                 if ( to )
 847                                         api.trigger( 'activated' );
 848                         });
 849
 850                         // Expose states to the API.
 851                         api.state = state;
 852                 }());
 853
 854                 // Button bindings.
 855                 $('#save').click( function( event ) {
 856                         previewer.save();
 857                         event.preventDefault();
 858                 }).keydown( function( event ) {
 859                         if ( 9 === event.which ) // tab
 860                                 return;
 861                         if ( 13 === event.which ) // enter
 862                                 previewer.save();
 863                         event.preventDefault();
 864                 });
 865
 866                 $('.back').keydown( function( event ) {
 867                         if ( 9 === event.which ) // tab
 868                                 return;
 869                         if ( 13 === event.which ) // enter
 870                                 this.click();
 871                         event.preventDefault();
 872                 });
 873
 874                 $('.upload-dropzone a.upload').keydown( function( event ) {
 875                         if ( 13 === event.which ) // enter
 876                                 this.click();
 877                 });
 878
 879                 $('.collapse-sidebar').on( 'click keydown', function( event ) {
 880                         if ( event.type === 'keydown' &&  13 !== event.which ) // enter
 881                                 return;
 882
 883                         overlay.toggleClass( 'collapsed' ).toggleClass( 'expanded' );
 884                         event.preventDefault();
 885                 });
 886
 887                 // Create a potential postMessage connection with the parent frame.
 888                 parent = new api.Messenger({
 889                         url: api.settings.url.parent,
 890                         channel: 'loader'
 891                 });
 892
 893                 // If we receive a 'back' event, we're inside an iframe.
 894                 // Send any clicks to the 'Return' link to the parent page.
 895                 parent.bind( 'back', function() {
 896                         $('.back').on( 'click.back', function( event ) {
 897                                 event.preventDefault();
 898                                 parent.send( 'close' );
 899                         });
 900                 });
 901
 902                 // Pass events through to the parent.
 903                 api.bind( 'saved', function() {
 904                         parent.send( 'saved' );
 905                 });
 906
 907                 // When activated, let the loader handle redirecting the page.
 908                 // If no loader exists, redirect the page ourselves (if a url exists).
 909                 api.bind( 'activated', function() {
 910                         if ( parent.targetWindow() )
 911                                 parent.send( 'activated', api.settings.url.activated );
 912                         else if ( api.settings.url.activated )
 913                                 window.location = api.settings.url.activated;
 914                 });
 915
 916                 // Initialize the connection with the parent frame.
 917                 parent.send( 'ready' );
 918
 919                 // Control visibility for default controls
 920                 $.each({
 921                         'background_image': {
 922                                 controls: [ 'background_repeat', 'background_position_x', 'background_attachment' ],
 923                                 callback: function( to ) { return !! to }
 924                         },
 925                         'show_on_front': {
 926                                 controls: [ 'page_on_front', 'page_for_posts' ],
 927                                 callback: function( to ) { return 'page' === to }
 928                         },
 929                         'header_textcolor': {
 930                                 controls: [ 'header_textcolor' ],
 931                                 callback: function( to ) { return 'blank' !== to }
 932                         }
 933                 }, function( settingId, o ) {
 934                         api( settingId, function( setting ) {
 935                                 $.each( o.controls, function( i, controlId ) {
 936                                         api.control( controlId, function( control ) {
 937                                                 var visibility = function( to ) {
 938                                                         control.container.toggle( o.callback( to ) );
 939                                                 };
 940
 941                                                 visibility( setting.get() );
 942                                                 setting.bind( visibility );
 943                                         });
 944                                 });
 945                         });
 946                 });
 947
 948                 // Juggle the two controls that use header_textcolor
 949                 api.control( 'display_header_text', function( control ) {
 950                         var last = '';
 951
 952                         control.elements[0].unsync( api( 'header_textcolor' ) );
 953
 954                         control.element = new api.Element( control.container.find('input') );
 955                         control.element.set( 'blank' !== control.setting() );
 956
 957                         control.element.bind( function( to ) {
 958                                 if ( ! to )
 959                                         last = api( 'header_textcolor' ).get();
 960
 961                                 control.setting.set( to ? last : 'blank' );
 962                         });
 963
 964                         control.setting.bind( function( to ) {
 965                                 control.element.set( 'blank' !== to );
 966                         });
 967                 });
 968
 969                 // Handle header image data
 970                 api.control( 'header_image', function( control ) {
 971                         control.setting.bind( function( to ) {
 972                                 if ( to === control.params.removed )
 973                                         control.settings.data.set( false );
 974                         });
 975
 976                         control.library.on( 'click', 'a', function( event ) {
 977                                 control.settings.data.set( $(this).data('customizeHeaderImageData') );
 978                         });
 979
 980                         control.uploader.success = function( attachment ) {
 981                                 var data;
 982
 983                                 api.ImageControl.prototype.success.call( control, attachment );
 984
 985                                 data = {
 986                                         attachment_id: attachment.get('id'),
 987                                         url:           attachment.get('url'),
 988                                         thumbnail_url: attachment.get('url'),
 989                                         height:        attachment.get('height'),
 990                                         width:         attachment.get('width')
 991                                 };
 992
 993                                 attachment.element.data( 'customizeHeaderImageData', data );
 994                                 control.settings.data.set( data );
 995                         };
 996                 });
 997
 998                 api.trigger( 'ready' );
 999
1000                 // Make sure left column gets focus
1001                 var topFocus = $('.back');
1002                 topFocus.focus();
1003                 setTimeout(function () {
1004                         topFocus.focus();
1005                 }, 200);
1006
1007         });
1008
1009 })( wp, jQuery );