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