wp-admin/js/theme.js

   1 /* global _wpThemeSettings, confirm */
   2 window.wp = window.wp || {};
   3
   4 ( function($) {
   5
   6 // Set up our namespace...
   7 var themes, l10n;
   8 themes = wp.themes = wp.themes || {};
   9
  10 // Store the theme data and settings for organized and quick access
  11 // themes.data.settings, themes.data.themes, themes.data.l10n
  12 themes.data = _wpThemeSettings;
  13 l10n = themes.data.l10n;
  14
  15 // Shortcut for isInstall check
  16 themes.isInstall = !! themes.data.settings.isInstall;
  17
  18 // Setup app structure
  19 _.extend( themes, { model: {}, view: {}, routes: {}, router: {}, template: wp.template });
  20
  21 themes.Model = Backbone.Model.extend({
  22         // Adds attributes to the default data coming through the .org themes api
  23         // Map `id` to `slug` for shared code
  24         initialize: function() {
  25                 var description;
  26
  27                 // If theme is already installed, set an attribute.
  28                 if ( _.indexOf( themes.data.installedThemes, this.get( 'slug' ) ) !== -1 ) {
  29                         this.set({ installed: true });
  30                 }
  31
  32                 // Set the attributes
  33                 this.set({
  34                         // slug is for installation, id is for existing.
  35                         id: this.get( 'slug' ) || this.get( 'id' )
  36                 });
  37
  38                 // Map `section.description` to `description`
  39                 // as the API sometimes returns it differently
  40                 if ( this.has( 'sections' ) ) {
  41                         description = this.get( 'sections' ).description;
  42                         this.set({ description: description });
  43                 }
  44         }
  45 });
  46
  47 // Main view controller for themes.php
  48 // Unifies and renders all available views
  49 themes.view.Appearance = wp.Backbone.View.extend({
  50
  51         el: '#wpbody-content .wrap .theme-browser',
  52
  53         window: $( window ),
  54         // Pagination instance
  55         page: 0,
  56
  57         // Sets up a throttler for binding to 'scroll'
  58         initialize: function( options ) {
  59                 // Scroller checks how far the scroll position is
  60                 _.bindAll( this, 'scroller' );
  61
  62                 this.SearchView = options.SearchView ? options.SearchView : themes.view.Search;
  63                 // Bind to the scroll event and throttle
  64                 // the results from this.scroller
  65                 this.window.bind( 'scroll', _.throttle( this.scroller, 300 ) );
  66         },
  67
  68         // Main render control
  69         render: function() {
  70                 // Setup the main theme view
  71                 // with the current theme collection
  72                 this.view = new themes.view.Themes({
  73                         collection: this.collection,
  74                         parent: this
  75                 });
  76
  77                 // Render search form.
  78                 this.search();
  79
  80                 // Render and append
  81                 this.view.render();
  82                 this.$el.empty().append( this.view.el ).addClass( 'rendered' );
  83                 this.$el.append( '<br class="clear"/>' );
  84         },
  85
  86         // Defines search element container
  87         searchContainer: $( '#wpbody h1:first' ),
  88
  89         // Search input and view
  90         // for current theme collection
  91         search: function() {
  92                 var view,
  93                         self = this;
  94
  95                 // Don't render the search if there is only one theme
  96                 if ( themes.data.themes.length === 1 ) {
  97                         return;
  98                 }
  99
 100                 view = new this.SearchView({
 101                         collection: self.collection,
 102                         parent: this
 103                 });
 104
 105                 // Render and append after screen title
 106                 view.render();
 107                 this.searchContainer
 108                         .append( $.parseHTML( '<label class="screen-reader-text" for="wp-filter-search-input">' + l10n.search + '</label>' ) )
 109                         .append( view.el );
 110         },
 111
 112         // Checks when the user gets close to the bottom
 113         // of the mage and triggers a theme:scroll event
 114         scroller: function() {
 115                 var self = this,
 116                         bottom, threshold;
 117
 118                 bottom = this.window.scrollTop() + self.window.height();
 119                 threshold = self.$el.offset().top + self.$el.outerHeight( false ) - self.window.height();
 120                 threshold = Math.round( threshold * 0.9 );
 121
 122                 if ( bottom > threshold ) {
 123                         this.trigger( 'theme:scroll' );
 124                 }
 125         }
 126 });
 127
 128 // Set up the Collection for our theme data
 129 // @has 'id' 'name' 'screenshot' 'author' 'authorURI' 'version' 'active' ...
 130 themes.Collection = Backbone.Collection.extend({
 131
 132         model: themes.Model,
 133
 134         // Search terms
 135         terms: '',
 136
 137         // Controls searching on the current theme collection
 138         // and triggers an update event
 139         doSearch: function( value ) {
 140
 141                 // Don't do anything if we've already done this search
 142                 // Useful because the Search handler fires multiple times per keystroke
 143                 if ( this.terms === value ) {
 144                         return;
 145                 }
 146
 147                 // Updates terms with the value passed
 148                 this.terms = value;
 149
 150                 // If we have terms, run a search...
 151                 if ( this.terms.length > 0 ) {
 152                         this.search( this.terms );
 153                 }
 154
 155                 // If search is blank, show all themes
 156                 // Useful for resetting the views when you clean the input
 157                 if ( this.terms === '' ) {
 158                         this.reset( themes.data.themes );
 159                         $( 'body' ).removeClass( 'no-results' );
 160                 }
 161
 162                 // Trigger an 'update' event
 163                 this.trigger( 'update' );
 164         },
 165
 166         // Performs a search within the collection
 167         // @uses RegExp
 168         search: function( term ) {
 169                 var match, results, haystack, name, description, author;
 170
 171                 // Start with a full collection
 172                 this.reset( themes.data.themes, { silent: true } );
 173
 174                 // Escape the term string for RegExp meta characters
 175                 term = term.replace( /[-\/\\^$*+?.()|[\]{}]/g, '\\$&' );
 176
 177                 // Consider spaces as word delimiters and match the whole string
 178                 // so matching terms can be combined
 179                 term = term.replace( / /g, ')(?=.*' );
 180                 match = new RegExp( '^(?=.*' + term + ').+', 'i' );
 181
 182                 // Find results
 183                 // _.filter and .test
 184                 results = this.filter( function( data ) {
 185                         name        = data.get( 'name' ).replace( /(<([^>]+)>)/ig, '' );
 186                         description = data.get( 'description' ).replace( /(<([^>]+)>)/ig, '' );
 187                         author      = data.get( 'author' ).replace( /(<([^>]+)>)/ig, '' );
 188
 189                         haystack = _.union( name, data.get( 'id' ), description, author, data.get( 'tags' ) );
 190
 191                         if ( match.test( data.get( 'author' ) ) && term.length > 2 ) {
 192                                 data.set( 'displayAuthor', true );
 193                         }
 194
 195                         return match.test( haystack );
 196                 });
 197
 198                 if ( results.length === 0 ) {
 199                         this.trigger( 'query:empty' );
 200                 } else {
 201                         $( 'body' ).removeClass( 'no-results' );
 202                 }
 203
 204                 this.reset( results );
 205         },
 206
 207         // Paginates the collection with a helper method
 208         // that slices the collection
 209         paginate: function( instance ) {
 210                 var collection = this;
 211                 instance = instance || 0;
 212
 213                 // Themes per instance are set at 20
 214                 collection = _( collection.rest( 20 * instance ) );
 215                 collection = _( collection.first( 20 ) );
 216
 217                 return collection;
 218         },
 219
 220         count: false,
 221
 222         // Handles requests for more themes
 223         // and caches results
 224         //
 225         // When we are missing a cache object we fire an apiCall()
 226         // which triggers events of `query:success` or `query:fail`
 227         query: function( request ) {
 228                 /**
 229                  * @static
 230                  * @type Array
 231                  */
 232                 var queries = this.queries,
 233                         self = this,
 234                         query, isPaginated, count;
 235
 236                 // Store current query request args
 237                 // for later use with the event `theme:end`
 238                 this.currentQuery.request = request;
 239
 240                 // Search the query cache for matches.
 241                 query = _.find( queries, function( query ) {
 242                         return _.isEqual( query.request, request );
 243                 });
 244
 245                 // If the request matches the stored currentQuery.request
 246                 // it means we have a paginated request.
 247                 isPaginated = _.has( request, 'page' );
 248
 249                 // Reset the internal api page counter for non paginated queries.
 250                 if ( ! isPaginated ) {
 251                         this.currentQuery.page = 1;
 252                 }
 253
 254                 // Otherwise, send a new API call and add it to the cache.
 255                 if ( ! query && ! isPaginated ) {
 256                         query = this.apiCall( request ).done( function( data ) {
 257
 258                                 // Update the collection with the queried data.
 259                                 if ( data.themes ) {
 260                                         self.reset( data.themes );
 261                                         count = data.info.results;
 262                                         // Store the results and the query request
 263                                         queries.push( { themes: data.themes, request: request, total: count } );
 264                                 }
 265
 266                                 // Trigger a collection refresh event
 267                                 // and a `query:success` event with a `count` argument.
 268                                 self.trigger( 'update' );
 269                                 self.trigger( 'query:success', count );
 270
 271                                 if ( data.themes && data.themes.length === 0 ) {
 272                                         self.trigger( 'query:empty' );
 273                                 }
 274
 275                         }).fail( function() {
 276                                 self.trigger( 'query:fail' );
 277                         });
 278                 } else {
 279                         // If it's a paginated request we need to fetch more themes...
 280                         if ( isPaginated ) {
 281                                 return this.apiCall( request, isPaginated ).done( function( data ) {
 282                                         // Add the new themes to the current collection
 283                                         // @todo update counter
 284                                         self.add( data.themes );
 285                                         self.trigger( 'query:success' );
 286
 287                                         // We are done loading themes for now.
 288                                         self.loadingThemes = false;
 289
 290                                 }).fail( function() {
 291                                         self.trigger( 'query:fail' );
 292                                 });
 293                         }
 294
 295                         if ( query.themes.length === 0 ) {
 296                                 self.trigger( 'query:empty' );
 297                         } else {
 298                                 $( 'body' ).removeClass( 'no-results' );
 299                         }
 300
 301                         // Only trigger an update event since we already have the themes
 302                         // on our cached object
 303                         if ( _.isNumber( query.total ) ) {
 304                                 this.count = query.total;
 305                         }
 306
 307                         this.reset( query.themes );
 308                         if ( ! query.total ) {
 309                                 this.count = this.length;
 310                         }
 311
 312                         this.trigger( 'update' );
 313                         this.trigger( 'query:success', this.count );
 314                 }
 315         },
 316
 317         // Local cache array for API queries
 318         queries: [],
 319
 320         // Keep track of current query so we can handle pagination
 321         currentQuery: {
 322                 page: 1,
 323                 request: {}
 324         },
 325
 326         // Send request to api.wordpress.org/themes
 327         apiCall: function( request, paginated ) {
 328                 return wp.ajax.send( 'query-themes', {
 329                         data: {
 330                         // Request data
 331                                 request: _.extend({
 332                                         per_page: 100,
 333                                         fields: {
 334                                                 description: true,
 335                                                 tested: true,
 336                                                 requires: true,
 337                                                 rating: true,
 338                                                 downloaded: true,
 339                                                 downloadLink: true,
 340                                                 last_updated: true,
 341                                                 homepage: true,
 342                                                 num_ratings: true
 343                                         }
 344                                 }, request)
 345                         },
 346
 347                         beforeSend: function() {
 348                                 if ( ! paginated ) {
 349                                         // Spin it
 350                                         $( 'body' ).addClass( 'loading-content' ).removeClass( 'no-results' );
 351                                 }
 352                         }
 353                 });
 354         },
 355
 356         // Static status controller for when we are loading themes.
 357         loadingThemes: false
 358 });
 359
 360 // This is the view that controls each theme item
 361 // that will be displayed on the screen
 362 themes.view.Theme = wp.Backbone.View.extend({
 363
 364         // Wrap theme data on a div.theme element
 365         className: 'theme',
 366
 367         // Reflects which theme view we have
 368         // 'grid' (default) or 'detail'
 369         state: 'grid',
 370
 371         // The HTML template for each element to be rendered
 372         html: themes.template( 'theme' ),
 373
 374         events: {
 375                 'click': themes.isInstall ? 'preview': 'expand',
 376                 'keydown': themes.isInstall ? 'preview': 'expand',
 377                 'touchend': themes.isInstall ? 'preview': 'expand',
 378                 'keyup': 'addFocus',
 379                 'touchmove': 'preventExpand'
 380         },
 381
 382         touchDrag: false,
 383
 384         render: function() {
 385                 var data = this.model.toJSON();
 386                 // Render themes using the html template
 387                 this.$el.html( this.html( data ) ).attr({
 388                         tabindex: 0,
 389                         'aria-describedby' : data.id + '-action ' + data.id + '-name'
 390                 });
 391
 392                 // Renders active theme styles
 393                 this.activeTheme();
 394
 395                 if ( this.model.get( 'displayAuthor' ) ) {
 396                         this.$el.addClass( 'display-author' );
 397                 }
 398
 399                 if ( this.model.get( 'installed' ) ) {
 400                         this.$el.addClass( 'is-installed' );
 401                 }
 402         },
 403
 404         // Adds a class to the currently active theme
 405         // and to the overlay in detailed view mode
 406         activeTheme: function() {
 407                 if ( this.model.get( 'active' ) ) {
 408                         this.$el.addClass( 'active' );
 409                 }
 410         },
 411
 412         // Add class of focus to the theme we are focused on.
 413         addFocus: function() {
 414                 var $themeToFocus = ( $( ':focus' ).hasClass( 'theme' ) ) ? $( ':focus' ) : $(':focus').parents('.theme');
 415
 416                 $('.theme.focus').removeClass('focus');
 417                 $themeToFocus.addClass('focus');
 418         },
 419
 420         // Single theme overlay screen
 421         // It's shown when clicking a theme
 422         expand: function( event ) {
 423                 var self = this;
 424
 425                 event = event || window.event;
 426
 427                 // 'enter' and 'space' keys expand the details view when a theme is :focused
 428                 if ( event.type === 'keydown' && ( event.which !== 13 && event.which !== 32 ) ) {
 429                         return;
 430                 }
 431
 432                 // Bail if the user scrolled on a touch device
 433                 if ( this.touchDrag === true ) {
 434                         return this.touchDrag = false;
 435                 }
 436
 437                 // Prevent the modal from showing when the user clicks
 438                 // one of the direct action buttons
 439                 if ( $( event.target ).is( '.theme-actions a' ) ) {
 440                         return;
 441                 }
 442
 443                 // Set focused theme to current element
 444                 themes.focusedTheme = this.$el;
 445
 446                 this.trigger( 'theme:expand', self.model.cid );
 447         },
 448
 449         preventExpand: function() {
 450                 this.touchDrag = true;
 451         },
 452
 453         preview: function( event ) {
 454                 var self = this,
 455                         current, preview;
 456
 457                 // Bail if the user scrolled on a touch device
 458                 if ( this.touchDrag === true ) {
 459                         return this.touchDrag = false;
 460                 }
 461
 462                 // Allow direct link path to installing a theme.
 463                 if ( $( event.target ).hasClass( 'button-primary' ) ) {
 464                         return;
 465                 }
 466
 467                 // 'enter' and 'space' keys expand the details view when a theme is :focused
 468                 if ( event.type === 'keydown' && ( event.which !== 13 && event.which !== 32 ) ) {
 469                         return;
 470                 }
 471
 472                 // pressing enter while focused on the buttons shouldn't open the preview
 473                 if ( event.type === 'keydown' && event.which !== 13 && $( ':focus' ).hasClass( 'button' ) ) {
 474                         return;
 475                 }
 476
 477                 event.preventDefault();
 478
 479                 event = event || window.event;
 480
 481                 // Set focus to current theme.
 482                 themes.focusedTheme = this.$el;
 483
 484                 // Construct a new Preview view.
 485                 preview = new themes.view.Preview({
 486                         model: this.model
 487                 });
 488
 489                 // Render the view and append it.
 490                 preview.render();
 491                 this.setNavButtonsState();
 492
 493                 // Hide previous/next navigation if there is only one theme
 494                 if ( this.model.collection.length === 1 ) {
 495                         preview.$el.addClass( 'no-navigation' );
 496                 } else {
 497                         preview.$el.removeClass( 'no-navigation' );
 498                 }
 499
 500                 // Append preview
 501                 $( 'div.wrap' ).append( preview.el );
 502
 503                 // Listen to our preview object
 504                 // for `theme:next` and `theme:previous` events.
 505                 this.listenTo( preview, 'theme:next', function() {
 506
 507                         // Keep local track of current theme model.
 508                         current = self.model;
 509
 510                         // If we have ventured away from current model update the current model position.
 511                         if ( ! _.isUndefined( self.current ) ) {
 512                                 current = self.current;
 513                         }
 514
 515                         // Get next theme model.
 516                         self.current = self.model.collection.at( self.model.collection.indexOf( current ) + 1 );
 517
 518                         // If we have no more themes, bail.
 519                         if ( _.isUndefined( self.current ) ) {
 520                                 self.options.parent.parent.trigger( 'theme:end' );
 521                                 return self.current = current;
 522                         }
 523
 524                         preview.model = self.current;
 525
 526                         // Render and append.
 527                         preview.render();
 528                         this.setNavButtonsState();
 529                         $( '.next-theme' ).focus();
 530                 })
 531                 .listenTo( preview, 'theme:previous', function() {
 532
 533                         // Keep track of current theme model.
 534                         current = self.model;
 535
 536                         // Bail early if we are at the beginning of the collection
 537                         if ( self.model.collection.indexOf( self.current ) === 0 ) {
 538                                 return;
 539                         }
 540
 541                         // If we have ventured away from current model update the current model position.
 542                         if ( ! _.isUndefined( self.current ) ) {
 543                                 current = self.current;
 544                         }
 545
 546                         // Get previous theme model.
 547                         self.current = self.model.collection.at( self.model.collection.indexOf( current ) - 1 );
 548
 549                         // If we have no more themes, bail.
 550                         if ( _.isUndefined( self.current ) ) {
 551                                 return;
 552                         }
 553
 554                         preview.model = self.current;
 555
 556                         // Render and append.
 557                         preview.render();
 558                         this.setNavButtonsState();
 559                         $( '.previous-theme' ).focus();
 560                 });
 561
 562                 this.listenTo( preview, 'preview:close', function() {
 563                         self.current = self.model;
 564                 });
 565         },
 566
 567         // Handles .disabled classes for previous/next buttons in theme installer preview
 568         setNavButtonsState: function() {
 569                 var $themeInstaller = $( '.theme-install-overlay' ),
 570                         current = _.isUndefined( this.current ) ? this.model : this.current;
 571
 572                 // Disable previous at the zero position
 573                 if ( 0 === this.model.collection.indexOf( current ) ) {
 574                         $themeInstaller.find( '.previous-theme' ).addClass( 'disabled' );
 575                 }
 576
 577                 // Disable next if the next model is undefined
 578                 if ( _.isUndefined( this.model.collection.at( this.model.collection.indexOf( current ) + 1 ) ) ) {
 579                         $themeInstaller.find( '.next-theme' ).addClass( 'disabled' );
 580                 }
 581         }
 582 });
 583
 584 // Theme Details view
 585 // Set ups a modal overlay with the expanded theme data
 586 themes.view.Details = wp.Backbone.View.extend({
 587
 588         // Wrap theme data on a div.theme element
 589         className: 'theme-overlay',
 590
 591         events: {
 592                 'click': 'collapse',
 593                 'click .delete-theme': 'deleteTheme',
 594                 'click .left': 'previousTheme',
 595                 'click .right': 'nextTheme'
 596         },
 597
 598         // The HTML template for the theme overlay
 599         html: themes.template( 'theme-single' ),
 600
 601         render: function() {
 602                 var data = this.model.toJSON();
 603                 this.$el.html( this.html( data ) );
 604                 // Renders active theme styles
 605                 this.activeTheme();
 606                 // Set up navigation events
 607                 this.navigation();
 608                 // Checks screenshot size
 609                 this.screenshotCheck( this.$el );
 610                 // Contain "tabbing" inside the overlay
 611                 this.containFocus( this.$el );
 612         },
 613
 614         // Adds a class to the currently active theme
 615         // and to the overlay in detailed view mode
 616         activeTheme: function() {
 617                 // Check the model has the active property
 618                 this.$el.toggleClass( 'active', this.model.get( 'active' ) );
 619         },
 620
 621         // Keeps :focus within the theme details elements
 622         containFocus: function( $el ) {
 623                 var $target;
 624
 625                 // Move focus to the primary action
 626                 _.delay( function() {
 627                         $( '.theme-wrap a.button-primary:visible' ).focus();
 628                 }, 500 );
 629
 630                 $el.on( 'keydown.wp-themes', function( event ) {
 631
 632                         // Tab key
 633                         if ( event.which === 9 ) {
 634                                 $target = $( event.target );
 635
 636                                 // Keep focus within the overlay by making the last link on theme actions
 637                                 // switch focus to button.left on tabbing and vice versa
 638                                 if ( $target.is( 'button.left' ) && event.shiftKey ) {
 639                                         $el.find( '.theme-actions a:last-child' ).focus();
 640                                         event.preventDefault();
 641                                 } else if ( $target.is( '.theme-actions a:last-child' ) ) {
 642                                         $el.find( 'button.left' ).focus();
 643                                         event.preventDefault();
 644                                 }
 645                         }
 646                 });
 647         },
 648
 649         // Single theme overlay screen
 650         // It's shown when clicking a theme
 651         collapse: function( event ) {
 652                 var self = this,
 653                         scroll;
 654
 655                 event = event || window.event;
 656
 657                 // Prevent collapsing detailed view when there is only one theme available
 658                 if ( themes.data.themes.length === 1 ) {
 659                         return;
 660                 }
 661
 662                 // Detect if the click is inside the overlay
 663                 // and don't close it unless the target was
 664                 // the div.back button
 665                 if ( $( event.target ).is( '.theme-backdrop' ) || $( event.target ).is( '.close' ) || event.keyCode === 27 ) {
 666
 667                         // Add a temporary closing class while overlay fades out
 668                         $( 'body' ).addClass( 'closing-overlay' );
 669
 670                         // With a quick fade out animation
 671                         this.$el.fadeOut( 130, function() {
 672                                 // Clicking outside the modal box closes the overlay
 673                                 $( 'body' ).removeClass( 'closing-overlay' );
 674                                 // Handle event cleanup
 675                                 self.closeOverlay();
 676
 677                                 // Get scroll position to avoid jumping to the top
 678                                 scroll = document.body.scrollTop;
 679
 680                                 // Clean the url structure
 681                                 themes.router.navigate( themes.router.baseUrl( '' ) );
 682
 683                                 // Restore scroll position
 684                                 document.body.scrollTop = scroll;
 685
 686                                 // Return focus to the theme div
 687                                 if ( themes.focusedTheme ) {
 688                                         themes.focusedTheme.focus();
 689                                 }
 690                         });
 691                 }
 692         },
 693
 694         // Handles .disabled classes for next/previous buttons
 695         navigation: function() {
 696
 697                 // Disable Left/Right when at the start or end of the collection
 698                 if ( this.model.cid === this.model.collection.at(0).cid ) {
 699                         this.$el.find( '.left' ).addClass( 'disabled' );
 700                 }
 701                 if ( this.model.cid === this.model.collection.at( this.model.collection.length - 1 ).cid ) {
 702                         this.$el.find( '.right' ).addClass( 'disabled' );
 703                 }
 704         },
 705
 706         // Performs the actions to effectively close
 707         // the theme details overlay
 708         closeOverlay: function() {
 709                 $( 'body' ).removeClass( 'modal-open' );
 710                 this.remove();
 711                 this.unbind();
 712                 this.trigger( 'theme:collapse' );
 713         },
 714
 715         // Confirmation dialog for deleting a theme
 716         deleteTheme: function() {
 717                 return confirm( themes.data.settings.confirmDelete );
 718         },
 719
 720         nextTheme: function() {
 721                 var self = this;
 722                 self.trigger( 'theme:next', self.model.cid );
 723                 return false;
 724         },
 725
 726         previousTheme: function() {
 727                 var self = this;
 728                 self.trigger( 'theme:previous', self.model.cid );
 729                 return false;
 730         },
 731
 732         // Checks if the theme screenshot is the old 300px width version
 733         // and adds a corresponding class if it's true
 734         screenshotCheck: function( el ) {
 735                 var screenshot, image;
 736
 737                 screenshot = el.find( '.screenshot img' );
 738                 image = new Image();
 739                 image.src = screenshot.attr( 'src' );
 740
 741                 // Width check
 742                 if ( image.width && image.width <= 300 ) {
 743                         el.addClass( 'small-screenshot' );
 744                 }
 745         }
 746 });
 747
 748 // Theme Preview view
 749 // Set ups a modal overlay with the expanded theme data
 750 themes.view.Preview = themes.view.Details.extend({
 751
 752         className: 'wp-full-overlay expanded',
 753         el: '.theme-install-overlay',
 754
 755         events: {
 756                 'click .close-full-overlay': 'close',
 757                 'click .collapse-sidebar': 'collapse',
 758                 'click .previous-theme': 'previousTheme',
 759                 'click .next-theme': 'nextTheme',
 760                 'keyup': 'keyEvent'
 761         },
 762
 763         // The HTML template for the theme preview
 764         html: themes.template( 'theme-preview' ),
 765
 766         render: function() {
 767                 var data = this.model.toJSON();
 768
 769                 this.$el.html( this.html( data ) );
 770
 771                 themes.router.navigate( themes.router.baseUrl( themes.router.themePath + this.model.get( 'id' ) ), { replace: true } );
 772
 773                 this.$el.fadeIn( 200, function() {
 774                         $( 'body' ).addClass( 'theme-installer-active full-overlay-active' );
 775                         $( '.close-full-overlay' ).focus();
 776                 });
 777         },
 778
 779         close: function() {
 780                 this.$el.fadeOut( 200, function() {
 781                         $( 'body' ).removeClass( 'theme-installer-active full-overlay-active' );
 782
 783                         // Return focus to the theme div
 784                         if ( themes.focusedTheme ) {
 785                                 themes.focusedTheme.focus();
 786                         }
 787                 });
 788
 789                 themes.router.navigate( themes.router.baseUrl( '' ) );
 790                 this.trigger( 'preview:close' );
 791                 this.undelegateEvents();
 792                 this.unbind();
 793                 return false;
 794         },
 795
 796         collapse: function( event ) {
 797                 var $button = $( event.currentTarget );
 798                 if ( 'true' === $button.attr( 'aria-expanded' ) ) {
 799                         $button.attr({ 'aria-expanded': 'false', 'aria-label': l10n.expandSidebar });
 800                 } else {
 801                         $button.attr({ 'aria-expanded': 'true', 'aria-label': l10n.collapseSidebar });
 802                 }
 803
 804                 this.$el.toggleClass( 'collapsed' ).toggleClass( 'expanded' );
 805                 return false;
 806         },
 807
 808         keyEvent: function( event ) {
 809                 // The escape key closes the preview
 810                 if ( event.keyCode === 27 ) {
 811                         this.undelegateEvents();
 812                         this.close();
 813                 }
 814                 // The right arrow key, next theme
 815                 if ( event.keyCode === 39 ) {
 816                         _.once( this.nextTheme() );
 817                 }
 818
 819                 // The left arrow key, previous theme
 820                 if ( event.keyCode === 37 ) {
 821                         this.previousTheme();
 822                 }
 823         }
 824 });
 825
 826 // Controls the rendering of div.themes,
 827 // a wrapper that will hold all the theme elements
 828 themes.view.Themes = wp.Backbone.View.extend({
 829
 830         className: 'themes',
 831         $overlay: $( 'div.theme-overlay' ),
 832
 833         // Number to keep track of scroll position
 834         // while in theme-overlay mode
 835         index: 0,
 836
 837         // The theme count element
 838         count: $( '.wp-core-ui .theme-count' ),
 839
 840         // The live themes count
 841         liveThemeCount: 0,
 842
 843         initialize: function( options ) {
 844                 var self = this;
 845
 846                 // Set up parent
 847                 this.parent = options.parent;
 848
 849                 // Set current view to [grid]
 850                 this.setView( 'grid' );
 851
 852                 // Move the active theme to the beginning of the collection
 853                 self.currentTheme();
 854
 855                 // When the collection is updated by user input...
 856                 this.listenTo( self.collection, 'update', function() {
 857                         self.parent.page = 0;
 858                         self.currentTheme();
 859                         self.render( this );
 860                 });
 861
 862                 // Update theme count to full result set when available.
 863                 this.listenTo( self.collection, 'query:success', function( count ) {
 864                         if ( _.isNumber( count ) ) {
 865                                 self.count.text( count );
 866                                 self.announceSearchResults( count );
 867                         } else {
 868                                 self.count.text( self.collection.length );
 869                                 self.announceSearchResults( self.collection.length );
 870                         }
 871                 });
 872
 873                 this.listenTo( self.collection, 'query:empty', function() {
 874                         $( 'body' ).addClass( 'no-results' );
 875                 });
 876
 877                 this.listenTo( this.parent, 'theme:scroll', function() {
 878                         self.renderThemes( self.parent.page );
 879                 });
 880
 881                 this.listenTo( this.parent, 'theme:close', function() {
 882                         if ( self.overlay ) {
 883                                 self.overlay.closeOverlay();
 884                         }
 885                 } );
 886
 887                 // Bind keyboard events.
 888                 $( 'body' ).on( 'keyup', function( event ) {
 889                         if ( ! self.overlay ) {
 890                                 return;
 891                         }
 892
 893                         // Pressing the right arrow key fires a theme:next event
 894                         if ( event.keyCode === 39 ) {
 895                                 self.overlay.nextTheme();
 896                         }
 897
 898                         // Pressing the left arrow key fires a theme:previous event
 899                         if ( event.keyCode === 37 ) {
 900                                 self.overlay.previousTheme();
 901                         }
 902
 903                         // Pressing the escape key fires a theme:collapse event
 904                         if ( event.keyCode === 27 ) {
 905                                 self.overlay.collapse( event );
 906                         }
 907                 });
 908         },
 909
 910         // Manages rendering of theme pages
 911         // and keeping theme count in sync
 912         render: function() {
 913                 // Clear the DOM, please
 914                 this.$el.empty();
 915
 916                 // If the user doesn't have switch capabilities
 917                 // or there is only one theme in the collection
 918                 // render the detailed view of the active theme
 919                 if ( themes.data.themes.length === 1 ) {
 920
 921                         // Constructs the view
 922                         this.singleTheme = new themes.view.Details({
 923                                 model: this.collection.models[0]
 924                         });
 925
 926                         // Render and apply a 'single-theme' class to our container
 927                         this.singleTheme.render();
 928                         this.$el.addClass( 'single-theme' );
 929                         this.$el.append( this.singleTheme.el );
 930                 }
 931
 932                 // Generate the themes
 933                 // Using page instance
 934                 // While checking the collection has items
 935                 if ( this.options.collection.size() > 0 ) {
 936                         this.renderThemes( this.parent.page );
 937                 }
 938
 939                 // Display a live theme count for the collection
 940                 this.liveThemeCount = this.collection.count ? this.collection.count : this.collection.length;
 941                 this.count.text( this.liveThemeCount );
 942
 943                 this.announceSearchResults( this.liveThemeCount );
 944         },
 945
 946         // Iterates through each instance of the collection
 947         // and renders each theme module
 948         renderThemes: function( page ) {
 949                 var self = this;
 950
 951                 self.instance = self.collection.paginate( page );
 952
 953                 // If we have no more themes bail
 954                 if ( self.instance.size() === 0 ) {
 955                         // Fire a no-more-themes event.
 956                         this.parent.trigger( 'theme:end' );
 957                         return;
 958                 }
 959
 960                 // Make sure the add-new stays at the end
 961                 if ( page >= 1 ) {
 962                         $( '.add-new-theme' ).remove();
 963                 }
 964
 965                 // Loop through the themes and setup each theme view
 966                 self.instance.each( function( theme ) {
 967                         self.theme = new themes.view.Theme({
 968                                 model: theme,
 969                                 parent: self
 970                         });
 971
 972                         // Render the views...
 973                         self.theme.render();
 974                         // and append them to div.themes
 975                         self.$el.append( self.theme.el );
 976
 977                         // Binds to theme:expand to show the modal box
 978                         // with the theme details
 979                         self.listenTo( self.theme, 'theme:expand', self.expand, self );
 980                 });
 981
 982                 // 'Add new theme' element shown at the end of the grid
 983                 if ( themes.data.settings.canInstall ) {
 984                         this.$el.append( '<div class="theme add-new-theme"><a href="' + themes.data.settings.installURI + '"><div class="theme-screenshot"><span></span></div><h3 class="theme-name">' + l10n.addNew + '</h3></a></div>' );
 985                 }
 986
 987                 this.parent.page++;
 988         },
 989
 990         // Grabs current theme and puts it at the beginning of the collection
 991         currentTheme: function() {
 992                 var self = this,
 993                         current;
 994
 995                 current = self.collection.findWhere({ active: true });
 996
 997                 // Move the active theme to the beginning of the collection
 998                 if ( current ) {
 999                         self.collection.remove( current );
1000                         self.collection.add( current, { at:0 } );
1001                 }
1002         },
1003
1004         // Sets current view
1005         setView: function( view ) {
1006                 return view;
1007         },
1008
1009         // Renders the overlay with the ThemeDetails view
1010         // Uses the current model data
1011         expand: function( id ) {
1012                 var self = this;
1013
1014                 // Set the current theme model
1015                 this.model = self.collection.get( id );
1016
1017                 // Trigger a route update for the current model
1018                 themes.router.navigate( themes.router.baseUrl( themes.router.themePath + this.model.id ) );
1019
1020                 // Sets this.view to 'detail'
1021                 this.setView( 'detail' );
1022                 $( 'body' ).addClass( 'modal-open' );
1023
1024                 // Set up the theme details view
1025                 this.overlay = new themes.view.Details({
1026                         model: self.model
1027                 });
1028
1029                 this.overlay.render();
1030                 this.$overlay.html( this.overlay.el );
1031
1032                 // Bind to theme:next and theme:previous
1033                 // triggered by the arrow keys
1034                 //
1035                 // Keep track of the current model so we
1036                 // can infer an index position
1037                 this.listenTo( this.overlay, 'theme:next', function() {
1038                         // Renders the next theme on the overlay
1039                         self.next( [ self.model.cid ] );
1040
1041                 })
1042                 .listenTo( this.overlay, 'theme:previous', function() {
1043                         // Renders the previous theme on the overlay
1044                         self.previous( [ self.model.cid ] );
1045                 });
1046         },
1047
1048         // This method renders the next theme on the overlay modal
1049         // based on the current position in the collection
1050         // @params [model cid]
1051         next: function( args ) {
1052                 var self = this,
1053                         model, nextModel;
1054
1055                 // Get the current theme
1056                 model = self.collection.get( args[0] );
1057                 // Find the next model within the collection
1058                 nextModel = self.collection.at( self.collection.indexOf( model ) + 1 );
1059
1060                 // Sanity check which also serves as a boundary test
1061                 if ( nextModel !== undefined ) {
1062
1063                         // We have a new theme...
1064                         // Close the overlay
1065                         this.overlay.closeOverlay();
1066
1067                         // Trigger a route update for the current model
1068                         self.theme.trigger( 'theme:expand', nextModel.cid );
1069
1070                 }
1071         },
1072
1073         // This method renders the previous theme on the overlay modal
1074         // based on the current position in the collection
1075         // @params [model cid]
1076         previous: function( args ) {
1077                 var self = this,
1078                         model, previousModel;
1079
1080                 // Get the current theme
1081                 model = self.collection.get( args[0] );
1082                 // Find the previous model within the collection
1083                 previousModel = self.collection.at( self.collection.indexOf( model ) - 1 );
1084
1085                 if ( previousModel !== undefined ) {
1086
1087                         // We have a new theme...
1088                         // Close the overlay
1089                         this.overlay.closeOverlay();
1090
1091                         // Trigger a route update for the current model
1092                         self.theme.trigger( 'theme:expand', previousModel.cid );
1093
1094                 }
1095         },
1096
1097         // Dispatch audible search results feedback message
1098         announceSearchResults: function( count ) {
1099                 if ( 0 === count ) {
1100                         wp.a11y.speak( l10n.noThemesFound );
1101                 } else {
1102                         wp.a11y.speak( l10n.themesFound.replace( '%d', count ) );
1103                 }
1104         }
1105 });
1106
1107 // Search input view controller.
1108 themes.view.Search = wp.Backbone.View.extend({
1109
1110         tagName: 'input',
1111         className: 'wp-filter-search',
1112         id: 'wp-filter-search-input',
1113         searching: false,
1114
1115         attributes: {
1116                 placeholder: l10n.searchPlaceholder,
1117                 type: 'search',
1118                 'aria-describedby': 'live-search-desc'
1119         },
1120
1121         events: {
1122                 'input': 'search',
1123                 'keyup': 'search',
1124                 'blur': 'pushState'
1125         },
1126
1127         initialize: function( options ) {
1128
1129                 this.parent = options.parent;
1130
1131                 this.listenTo( this.parent, 'theme:close', function() {
1132                         this.searching = false;
1133                 } );
1134
1135         },
1136
1137         search: function( event ) {
1138                 // Clear on escape.
1139                 if ( event.type === 'keyup' && event.which === 27 ) {
1140                         event.target.value = '';
1141                 }
1142
1143                 /**
1144                  * Since doSearch is debounced, it will only run when user input comes to a rest
1145                  */
1146                 this.doSearch( event );
1147         },
1148
1149         // Runs a search on the theme collection.
1150         doSearch: _.debounce( function( event ) {
1151                 var options = {};
1152
1153                 this.collection.doSearch( event.target.value );
1154
1155                 // if search is initiated and key is not return
1156                 if ( this.searching && event.which !== 13 ) {
1157                         options.replace = true;
1158                 } else {
1159                         this.searching = true;
1160                 }
1161
1162                 // Update the URL hash
1163                 if ( event.target.value ) {
1164                         themes.router.navigate( themes.router.baseUrl( themes.router.searchPath + event.target.value ), options );
1165                 } else {
1166                         themes.router.navigate( themes.router.baseUrl( '' ) );
1167                 }
1168         }, 500 ),
1169
1170         pushState: function( event ) {
1171                 var url = themes.router.baseUrl( '' );
1172
1173                 if ( event.target.value ) {
1174                         url = themes.router.baseUrl( themes.router.searchPath + event.target.value );
1175                 }
1176
1177                 this.searching = false;
1178                 themes.router.navigate( url );
1179
1180         }
1181 });
1182
1183 // Sets up the routes events for relevant url queries
1184 // Listens to [theme] and [search] params
1185 themes.Router = Backbone.Router.extend({
1186
1187         routes: {
1188                 'themes.php?theme=:slug': 'theme',
1189                 'themes.php?search=:query': 'search',
1190                 'themes.php?s=:query': 'search',
1191                 'themes.php': 'themes',
1192                 '': 'themes'
1193         },
1194
1195         baseUrl: function( url ) {
1196                 return 'themes.php' + url;
1197         },
1198
1199         themePath: '?theme=',
1200         searchPath: '?search=',
1201
1202         search: function( query ) {
1203                 $( '.wp-filter-search' ).val( query );
1204         },
1205
1206         themes: function() {
1207                 $( '.wp-filter-search' ).val( '' );
1208         },
1209
1210         navigate: function() {
1211                 if ( Backbone.history._hasPushState ) {
1212                         Backbone.Router.prototype.navigate.apply( this, arguments );
1213                 }
1214         }
1215
1216 });
1217
1218 // Execute and setup the application
1219 themes.Run = {
1220         init: function() {
1221                 // Initializes the blog's theme library view
1222                 // Create a new collection with data
1223                 this.themes = new themes.Collection( themes.data.themes );
1224
1225                 // Set up the view
1226                 this.view = new themes.view.Appearance({
1227                         collection: this.themes
1228                 });
1229
1230                 this.render();
1231         },
1232
1233         render: function() {
1234
1235                 // Render results
1236                 this.view.render();
1237                 this.routes();
1238
1239                 Backbone.history.start({
1240                         root: themes.data.settings.adminUrl,
1241                         pushState: true,
1242                         hashChange: false
1243                 });
1244         },
1245
1246         routes: function() {
1247                 var self = this;
1248                 // Bind to our global thx object
1249                 // so that the object is available to sub-views
1250                 themes.router = new themes.Router();
1251
1252                 // Handles theme details route event
1253                 themes.router.on( 'route:theme', function( slug ) {
1254                         self.view.view.expand( slug );
1255                 });
1256
1257                 themes.router.on( 'route:themes', function() {
1258                         self.themes.doSearch( '' );
1259                         self.view.trigger( 'theme:close' );
1260                 });
1261
1262                 // Handles search route event
1263                 themes.router.on( 'route:search', function() {
1264                         $( '.wp-filter-search' ).trigger( 'keyup' );
1265                 });
1266
1267                 this.extraRoutes();
1268         },
1269
1270         extraRoutes: function() {
1271                 return false;
1272         }
1273 };
1274
1275 // Extend the main Search view
1276 themes.view.InstallerSearch =  themes.view.Search.extend({
1277
1278         events: {
1279                 'input': 'search',
1280                 'keyup': 'search'
1281         },
1282
1283         // Handles Ajax request for searching through themes in public repo
1284         search: function( event ) {
1285
1286                 // Tabbing or reverse tabbing into the search input shouldn't trigger a search
1287                 if ( event.type === 'keyup' && ( event.which === 9 || event.which === 16 ) ) {
1288                         return;
1289                 }
1290
1291                 this.collection = this.options.parent.view.collection;
1292
1293                 // Clear on escape.
1294                 if ( event.type === 'keyup' && event.which === 27 ) {
1295                         event.target.value = '';
1296                 }
1297
1298                 this.doSearch( event.target.value );
1299         },
1300
1301         doSearch: _.debounce( function( value ) {
1302                 var request = {};
1303
1304                 request.search = value;
1305
1306                 // Intercept an [author] search.
1307                 //
1308                 // If input value starts with `author:` send a request
1309                 // for `author` instead of a regular `search`
1310                 if ( value.substring( 0, 7 ) === 'author:' ) {
1311                         request.search = '';
1312                         request.author = value.slice( 7 );
1313                 }
1314
1315                 // Intercept a [tag] search.
1316                 //
1317                 // If input value starts with `tag:` send a request
1318                 // for `tag` instead of a regular `search`
1319                 if ( value.substring( 0, 4 ) === 'tag:' ) {
1320                         request.search = '';
1321                         request.tag = [ value.slice( 4 ) ];
1322                 }
1323
1324                 $( '.filter-links li > a.current' ).removeClass( 'current' );
1325                 $( 'body' ).removeClass( 'show-filters filters-applied' );
1326
1327                 // Get the themes by sending Ajax POST request to api.wordpress.org/themes
1328                 // or searching the local cache
1329                 this.collection.query( request );
1330
1331                 // Set route
1332                 themes.router.navigate( themes.router.baseUrl( themes.router.searchPath + value ), { replace: true } );
1333         }, 500 )
1334 });
1335
1336 themes.view.Installer = themes.view.Appearance.extend({
1337
1338         el: '#wpbody-content .wrap',
1339
1340         // Register events for sorting and filters in theme-navigation
1341         events: {
1342                 'click .filter-links li > a': 'onSort',
1343                 'click .theme-filter': 'onFilter',
1344                 'click .drawer-toggle': 'moreFilters',
1345                 'click .filter-drawer .apply-filters': 'applyFilters',
1346                 'click .filter-group [type="checkbox"]': 'addFilter',
1347                 'click .filter-drawer .clear-filters': 'clearFilters',
1348                 'click .filtered-by': 'backToFilters'
1349         },
1350
1351         // Initial render method
1352         render: function() {
1353                 var self = this;
1354
1355                 this.search();
1356                 this.uploader();
1357
1358                 this.collection = new themes.Collection();
1359
1360                 // Bump `collection.currentQuery.page` and request more themes if we hit the end of the page.
1361                 this.listenTo( this, 'theme:end', function() {
1362
1363                         // Make sure we are not already loading
1364                         if ( self.collection.loadingThemes ) {
1365                                 return;
1366                         }
1367
1368                         // Set loadingThemes to true and bump page instance of currentQuery.
1369                         self.collection.loadingThemes = true;
1370                         self.collection.currentQuery.page++;
1371
1372                         // Use currentQuery.page to build the themes request.
1373                         _.extend( self.collection.currentQuery.request, { page: self.collection.currentQuery.page } );
1374                         self.collection.query( self.collection.currentQuery.request );
1375                 });
1376
1377                 this.listenTo( this.collection, 'query:success', function() {
1378                         $( 'body' ).removeClass( 'loading-content' );
1379                         $( '.theme-browser' ).find( 'div.error' ).remove();
1380                 });
1381
1382                 this.listenTo( this.collection, 'query:fail', function() {
1383                         $( 'body' ).removeClass( 'loading-content' );
1384                         $( '.theme-browser' ).find( 'div.error' ).remove();
1385                         $( '.theme-browser' ).find( 'div.themes' ).before( '<div class="error"><p>' + l10n.error + '</p></div>' );
1386                 });
1387
1388                 if ( this.view ) {
1389                         this.view.remove();
1390                 }
1391
1392                 // Set ups the view and passes the section argument
1393                 this.view = new themes.view.Themes({
1394                         collection: this.collection,
1395                         parent: this
1396                 });
1397
1398                 // Reset pagination every time the install view handler is run
1399                 this.page = 0;
1400
1401                 // Render and append
1402                 this.$el.find( '.themes' ).remove();
1403                 this.view.render();
1404                 this.$el.find( '.theme-browser' ).append( this.view.el ).addClass( 'rendered' );
1405         },
1406
1407         // Handles all the rendering of the public theme directory
1408         browse: function( section ) {
1409                 // Create a new collection with the proper theme data
1410                 // for each section
1411                 this.collection.query( { browse: section } );
1412         },
1413
1414         // Sorting navigation
1415         onSort: function( event ) {
1416                 var $el = $( event.target ),
1417                         sort = $el.data( 'sort' );
1418
1419                 event.preventDefault();
1420
1421                 $( 'body' ).removeClass( 'filters-applied show-filters' );
1422
1423                 // Bail if this is already active
1424                 if ( $el.hasClass( this.activeClass ) ) {
1425                         return;
1426                 }
1427
1428                 this.sort( sort );
1429
1430                 // Trigger a router.naviagte update
1431                 themes.router.navigate( themes.router.baseUrl( themes.router.browsePath + sort ) );
1432         },
1433
1434         sort: function( sort ) {
1435                 this.clearSearch();
1436
1437                 $( '.filter-links li > a, .theme-filter' ).removeClass( this.activeClass );
1438                 $( '[data-sort="' + sort + '"]' ).addClass( this.activeClass );
1439
1440                 this.browse( sort );
1441         },
1442
1443         // Filters and Tags
1444         onFilter: function( event ) {
1445                 var request,
1446                         $el = $( event.target ),
1447                         filter = $el.data( 'filter' );
1448
1449                 // Bail if this is already active
1450                 if ( $el.hasClass( this.activeClass ) ) {
1451                         return;
1452                 }
1453
1454                 $( '.filter-links li > a, .theme-section' ).removeClass( this.activeClass );
1455                 $el.addClass( this.activeClass );
1456
1457                 if ( ! filter ) {
1458                         return;
1459                 }
1460
1461                 // Construct the filter request
1462                 // using the default values
1463                 filter = _.union( filter, this.filtersChecked() );
1464                 request = { tag: [ filter ] };
1465
1466                 // Get the themes by sending Ajax POST request to api.wordpress.org/themes
1467                 // or searching the local cache
1468                 this.collection.query( request );
1469         },
1470
1471         // Clicking on a checkbox to add another filter to the request
1472         addFilter: function() {
1473                 this.filtersChecked();
1474         },
1475
1476         // Applying filters triggers a tag request
1477         applyFilters: function( event ) {
1478                 var name,
1479                         tags = this.filtersChecked(),
1480                         request = { tag: tags },
1481                         filteringBy = $( '.filtered-by .tags' );
1482
1483                 if ( event ) {
1484                         event.preventDefault();
1485                 }
1486
1487                 $( 'body' ).addClass( 'filters-applied' );
1488                 $( '.filter-links li > a.current' ).removeClass( 'current' );
1489                 filteringBy.empty();
1490
1491                 _.each( tags, function( tag ) {
1492                         name = $( 'label[for="filter-id-' + tag + '"]' ).text();
1493                         filteringBy.append( '<span class="tag">' + name + '</span>' );
1494                 });
1495
1496                 // Get the themes by sending Ajax POST request to api.wordpress.org/themes
1497                 // or searching the local cache
1498                 this.collection.query( request );
1499         },
1500
1501         // Get the checked filters
1502         // @return {array} of tags or false
1503         filtersChecked: function() {
1504                 var items = $( '.filter-group' ).find( ':checkbox' ),
1505                         tags = [];
1506
1507                 _.each( items.filter( ':checked' ), function( item ) {
1508                         tags.push( $( item ).prop( 'value' ) );
1509                 });
1510
1511                 // When no filters are checked, restore initial state and return
1512                 if ( tags.length === 0 ) {
1513                         $( '.filter-drawer .apply-filters' ).find( 'span' ).text( '' );
1514                         $( '.filter-drawer .clear-filters' ).hide();
1515                         $( 'body' ).removeClass( 'filters-applied' );
1516                         return false;
1517                 }
1518
1519                 $( '.filter-drawer .apply-filters' ).find( 'span' ).text( tags.length );
1520                 $( '.filter-drawer .clear-filters' ).css( 'display', 'inline-block' );
1521
1522                 return tags;
1523         },
1524
1525         activeClass: 'current',
1526
1527         // Overwrite search container class to append search
1528         // in new location
1529         searchContainer: $( '.wp-filter .search-form' ),
1530
1531         uploader: function() {
1532                 $( 'a.upload' ).on( 'click', function( event ) {
1533                         event.preventDefault();
1534                         $( 'body' ).addClass( 'show-upload-theme' );
1535                         themes.router.navigate( themes.router.baseUrl( '?upload' ), { replace: true } );
1536                 });
1537                 $( 'a.browse-themes' ).on( 'click', function( event ) {
1538                         event.preventDefault();
1539                         $( 'body' ).removeClass( 'show-upload-theme' );
1540                         themes.router.navigate( themes.router.baseUrl( '' ), { replace: true } );
1541                 });
1542         },
1543
1544         // Toggle the full filters navigation
1545         moreFilters: function( event ) {
1546                 event.preventDefault();
1547
1548                 if ( $( 'body' ).hasClass( 'filters-applied' ) ) {
1549                         return this.backToFilters();
1550                 }
1551
1552                 // If the filters section is opened and filters are checked
1553                 // run the relevant query collapsing to filtered-by state
1554                 if ( $( 'body' ).hasClass( 'show-filters' ) && this.filtersChecked() ) {
1555                         return this.addFilter();
1556                 }
1557
1558                 this.clearSearch();
1559
1560                 themes.router.navigate( themes.router.baseUrl( '' ) );
1561                 $( 'body' ).toggleClass( 'show-filters' );
1562         },
1563
1564         // Clears all the checked filters
1565         // @uses filtersChecked()
1566         clearFilters: function( event ) {
1567                 var items = $( '.filter-group' ).find( ':checkbox' ),
1568                         self = this;
1569
1570                 event.preventDefault();
1571
1572                 _.each( items.filter( ':checked' ), function( item ) {
1573                         $( item ).prop( 'checked', false );
1574                         return self.filtersChecked();
1575                 });
1576         },
1577
1578         backToFilters: function( event ) {
1579                 if ( event ) {
1580                         event.preventDefault();
1581                 }
1582
1583                 $( 'body' ).removeClass( 'filters-applied' );
1584         },
1585
1586         clearSearch: function() {
1587                 $( '#wp-filter-search-input').val( '' );
1588         }
1589 });
1590
1591 themes.InstallerRouter = Backbone.Router.extend({
1592         routes: {
1593                 'theme-install.php?theme=:slug': 'preview',
1594                 'theme-install.php?browse=:sort': 'sort',
1595                 'theme-install.php?upload': 'upload',
1596                 'theme-install.php?search=:query': 'search',
1597                 'theme-install.php': 'sort'
1598         },
1599
1600         baseUrl: function( url ) {
1601                 return 'theme-install.php' + url;
1602         },
1603
1604         themePath: '?theme=',
1605         browsePath: '?browse=',
1606         searchPath: '?search=',
1607
1608         search: function( query ) {
1609                 $( '.wp-filter-search' ).val( query );
1610         },
1611
1612         navigate: function() {
1613                 if ( Backbone.history._hasPushState ) {
1614                         Backbone.Router.prototype.navigate.apply( this, arguments );
1615                 }
1616         }
1617 });
1618
1619
1620 themes.RunInstaller = {
1621
1622         init: function() {
1623                 // Set up the view
1624                 // Passes the default 'section' as an option
1625                 this.view = new themes.view.Installer({
1626                         section: 'featured',
1627                         SearchView: themes.view.InstallerSearch
1628                 });
1629
1630                 // Render results
1631                 this.render();
1632
1633         },
1634
1635         render: function() {
1636
1637                 // Render results
1638                 this.view.render();
1639                 this.routes();
1640
1641                 Backbone.history.start({
1642                         root: themes.data.settings.adminUrl,
1643                         pushState: true,
1644                         hashChange: false
1645                 });
1646         },
1647
1648         routes: function() {
1649                 var self = this,
1650                         request = {};
1651
1652                 // Bind to our global `wp.themes` object
1653                 // so that the router is available to sub-views
1654                 themes.router = new themes.InstallerRouter();
1655
1656                 // Handles `theme` route event
1657                 // Queries the API for the passed theme slug
1658                 themes.router.on( 'route:preview', function( slug ) {
1659                         request.theme = slug;
1660                         self.view.collection.query( request );
1661                 });
1662
1663                 // Handles sorting / browsing routes
1664                 // Also handles the root URL triggering a sort request
1665                 // for `featured`, the default view
1666                 themes.router.on( 'route:sort', function( sort ) {
1667                         if ( ! sort ) {
1668                                 sort = 'featured';
1669                         }
1670                         self.view.sort( sort );
1671                         self.view.trigger( 'theme:close' );
1672                 });
1673
1674                 // Support the `upload` route by going straight to upload section
1675                 themes.router.on( 'route:upload', function() {
1676                         $( 'a.upload' ).trigger( 'click' );
1677                 });
1678
1679                 // The `search` route event. The router populates the input field.
1680                 themes.router.on( 'route:search', function() {
1681                         $( '.wp-filter-search' ).focus().trigger( 'keyup' );
1682                 });
1683
1684                 this.extraRoutes();
1685         },
1686
1687         extraRoutes: function() {
1688                 return false;
1689         }
1690 };
1691
1692 // Ready...
1693 $( document ).ready(function() {
1694         if ( themes.isInstall ) {
1695                 themes.RunInstaller.init();
1696         } else {
1697                 themes.Run.init();
1698         }
1699
1700         $( '.broken-themes .delete-theme' ).on( 'click', function() {
1701                 return confirm( _wpThemeSettings.settings.confirmDelete );
1702         });
1703 });
1704
1705 })( jQuery );
1706
1707 // Align theme browser thickbox
1708 var tb_position;
1709 jQuery(document).ready( function($) {
1710         tb_position = function() {
1711                 var tbWindow = $('#TB_window'),
1712                         width = $(window).width(),
1713                         H = $(window).height(),
1714                         W = ( 1040 < width ) ? 1040 : width,
1715                         adminbar_height = 0;
1716
1717                 if ( $('#wpadminbar').length ) {
1718                         adminbar_height = parseInt( $('#wpadminbar').css('height'), 10 );
1719                 }
1720
1721                 if ( tbWindow.size() ) {
1722                         tbWindow.width( W - 50 ).height( H - 45 - adminbar_height );
1723                         $('#TB_iframeContent').width( W - 50 ).height( H - 75 - adminbar_height );
1724                         tbWindow.css({'margin-left': '-' + parseInt( ( ( W - 50 ) / 2 ), 10 ) + 'px'});
1725                         if ( typeof document.body.style.maxWidth !== 'undefined' ) {
1726                                 tbWindow.css({'top': 20 + adminbar_height + 'px', 'margin-top': '0'});
1727                         }
1728                 }
1729         };
1730
1731         $(window).resize(function(){ tb_position(); });
1732 });