wp/wp-admin/js/customize-controls.js
changeset 0 d970ebf37754
child 5 5e2f62d02dcd
equal deleted inserted replaced
-1:000000000000 0:d970ebf37754
       
     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 );