wp-includes/js/media-grid.js

   1 /* global _wpMediaViewsL10n, MediaElementPlayer, _wpMediaGridSettings */
   2 (function($, _, Backbone, wp) {
   3         // Local reference to the WordPress media namespace.
   4         var media = wp.media, l10n;
   5
   6         // Link localized strings and settings.
   7         if ( media.view.l10n ) {
   8                 l10n = media.view.l10n;
   9         } else {
  10                 l10n = media.view.l10n = typeof _wpMediaViewsL10n === 'undefined' ? {} : _wpMediaViewsL10n;
  11                 delete l10n.settings;
  12         }
  13
  14         /**
  15          * wp.media.controller.EditAttachmentMetadata
  16          *
  17          * A state for editing an attachment's metadata.
  18          *
  19          * @constructor
  20          * @augments wp.media.controller.State
  21          * @augments Backbone.Model
  22          */
  23         media.controller.EditAttachmentMetadata = media.controller.State.extend({
  24                 defaults: {
  25                         id:      'edit-attachment',
  26                         // Title string passed to the frame's title region view.
  27                         title:   l10n.attachmentDetails,
  28                         // Region mode defaults.
  29                         content: 'edit-metadata',
  30                         menu:    false,
  31                         toolbar: false,
  32                         router:  false
  33                 }
  34         });
  35
  36         /**
  37          * wp.media.view.MediaFrame.Manage
  38          *
  39          * A generic management frame workflow.
  40          *
  41          * Used in the media grid view.
  42          *
  43          * @constructor
  44          * @augments wp.media.view.MediaFrame
  45          * @augments wp.media.view.Frame
  46          * @augments wp.media.View
  47          * @augments wp.Backbone.View
  48          * @augments Backbone.View
  49          * @mixes wp.media.controller.StateMachine
  50          */
  51         media.view.MediaFrame.Manage = media.view.MediaFrame.extend({
  52                 /**
  53                  * @global wp.Uploader
  54                  */
  55                 initialize: function() {
  56                         var self = this;
  57                         _.defaults( this.options, {
  58                                 title:     '',
  59                                 modal:     false,
  60                                 selection: [],
  61                                 library:   {}, // Options hash for the query to the media library.
  62                                 multiple:  'add',
  63                                 state:     'library',
  64                                 uploader:  true,
  65                                 mode:      [ 'grid', 'edit' ]
  66                         });
  67
  68                         this.$body = $( document.body );
  69                         this.$window = $( window );
  70                         this.$adminBar = $( '#wpadminbar' );
  71                         this.$window.on( 'scroll resize', _.debounce( _.bind( this.fixPosition, this ), 15 ) );
  72                         $( document ).on( 'click', '.add-new-h2', _.bind( this.addNewClickHandler, this ) );
  73
  74                         // Ensure core and media grid view UI is enabled.
  75                         this.$el.addClass('wp-core-ui');
  76
  77                         // Force the uploader off if the upload limit has been exceeded or
  78                         // if the browser isn't supported.
  79                         if ( wp.Uploader.limitExceeded || ! wp.Uploader.browser.supported ) {
  80                                 this.options.uploader = false;
  81                         }
  82
  83                         // Initialize a window-wide uploader.
  84                         if ( this.options.uploader ) {
  85                                 this.uploader = new media.view.UploaderWindow({
  86                                         controller: this,
  87                                         uploader: {
  88                                                 dropzone:  document.body,
  89                                                 container: document.body
  90                                         }
  91                                 }).render();
  92                                 this.uploader.ready();
  93                                 $('body').append( this.uploader.el );
  94
  95                                 this.options.uploader = false;
  96                         }
  97
  98                         this.gridRouter = new media.view.MediaFrame.Manage.Router();
  99
 100                         // Call 'initialize' directly on the parent class.
 101                         media.view.MediaFrame.prototype.initialize.apply( this, arguments );
 102
 103                         // Append the frame view directly the supplied container.
 104                         this.$el.appendTo( this.options.container );
 105
 106                         this.createStates();
 107                         this.bindRegionModeHandlers();
 108                         this.render();
 109
 110                         // Update the URL when entering search string (at most once per second)
 111                         $( '#media-search-input' ).on( 'input', _.debounce( function(e) {
 112                                 var val = $( e.currentTarget ).val(), url = '';
 113                                 if ( val ) {
 114                                         url += '?search=' + val;
 115                                 }
 116                                 self.gridRouter.navigate( self.gridRouter.baseUrl( url ) );
 117                         }, 1000 ) );
 118                 },
 119
 120                 /**
 121                  * Create the default states for the frame.
 122                  */
 123                 createStates: function() {
 124                         var options = this.options;
 125
 126                         if ( this.options.states ) {
 127                                 return;
 128                         }
 129
 130                         // Add the default states.
 131                         this.states.add([
 132                                 new media.controller.Library({
 133                                         library:            media.query( options.library ),
 134                                         multiple:           options.multiple,
 135                                         title:              options.title,
 136                                         content:            'browse',
 137                                         toolbar:            'select',
 138                                         contentUserSetting: false,
 139                                         filterable:         'all',
 140                                         autoSelect:         false
 141                                 })
 142                         ]);
 143                 },
 144
 145                 /**
 146                  * Bind region mode activation events to proper handlers.
 147                  */
 148                 bindRegionModeHandlers: function() {
 149                         this.on( 'content:create:browse', this.browseContent, this );
 150
 151                         // Handle a frame-level event for editing an attachment.
 152                         this.on( 'edit:attachment', this.openEditAttachmentModal, this );
 153
 154                         this.on( 'select:activate', this.bindKeydown, this );
 155                         this.on( 'select:deactivate', this.unbindKeydown, this );
 156                 },
 157
 158                 handleKeydown: function( e ) {
 159                         if ( 27 === e.which ) {
 160                                 e.preventDefault();
 161                                 this.deactivateMode( 'select' ).activateMode( 'edit' );
 162                         }
 163                 },
 164
 165                 bindKeydown: function() {
 166                         this.$body.on( 'keydown.select', _.bind( this.handleKeydown, this ) );
 167                 },
 168
 169                 unbindKeydown: function() {
 170                         this.$body.off( 'keydown.select' );
 171                 },
 172
 173                 fixPosition: function() {
 174                         var $browser, $toolbar;
 175                         if ( ! this.isModeActive( 'select' ) ) {
 176                                 return;
 177                         }
 178
 179                         $browser = this.$('.attachments-browser');
 180                         $toolbar = $browser.find('.media-toolbar');
 181
 182                         // Offset doesn't appear to take top margin into account, hence +16
 183                         if ( ( $browser.offset().top + 16 ) < this.$window.scrollTop() + this.$adminBar.height() ) {
 184                                 $browser.addClass( 'fixed' );
 185                                 $toolbar.css('width', $browser.width() + 'px');
 186                         } else {
 187                                 $browser.removeClass( 'fixed' );
 188                                 $toolbar.css('width', '');
 189                         }
 190                 },
 191
 192                 /**
 193                  * Click handler for the `Add New` button.
 194                  */
 195                 addNewClickHandler: function( event ) {
 196                         event.preventDefault();
 197                         this.trigger( 'toggle:upload:attachment' );
 198                 },
 199
 200                 /**
 201                  * Open the Edit Attachment modal.
 202                  */
 203                 openEditAttachmentModal: function( model ) {
 204                         // Create a new EditAttachment frame, passing along the library and the attachment model.
 205                         wp.media( {
 206                                 frame:       'edit-attachments',
 207                                 controller:  this,
 208                                 library:     this.state().get('library'),
 209                                 model:       model
 210                         } );
 211                 },
 212
 213                 /**
 214                  * Create an attachments browser view within the content region.
 215                  *
 216                  * @param {Object} contentRegion Basic object with a `view` property, which
 217                  *                               should be set with the proper region view.
 218                  * @this wp.media.controller.Region
 219                  */
 220                 browseContent: function( contentRegion ) {
 221                         var state = this.state();
 222
 223                         // Browse our library of attachments.
 224                         this.browserView = contentRegion.view = new media.view.AttachmentsBrowser({
 225                                 controller: this,
 226                                 collection: state.get('library'),
 227                                 selection:  state.get('selection'),
 228                                 model:      state,
 229                                 sortable:   state.get('sortable'),
 230                                 search:     state.get('searchable'),
 231                                 filters:    state.get('filterable'),
 232                                 display:    state.get('displaySettings'),
 233                                 dragInfo:   state.get('dragInfo'),
 234                                 sidebar:    'errors',
 235
 236                                 suggestedWidth:  state.get('suggestedWidth'),
 237                                 suggestedHeight: state.get('suggestedHeight'),
 238
 239                                 AttachmentView: state.get('AttachmentView'),
 240
 241                                 scrollElement: document
 242                         });
 243                         this.browserView.on( 'ready', _.bind( this.bindDeferred, this ) );
 244
 245                         this.errors = wp.Uploader.errors;
 246                         this.errors.on( 'add remove reset', this.sidebarVisibility, this );
 247                 },
 248
 249                 sidebarVisibility: function() {
 250                         this.browserView.$( '.media-sidebar' ).toggle( !! this.errors.length );
 251                 },
 252
 253                 bindDeferred: function() {
 254                         if ( ! this.browserView.dfd ) {
 255                                 return;
 256                         }
 257                         this.browserView.dfd.done( _.bind( this.startHistory, this ) );
 258                 },
 259
 260                 startHistory: function() {
 261                         // Verify pushState support and activate
 262                         if ( window.history && window.history.pushState ) {
 263                                 Backbone.history.start( {
 264                                         root: _wpMediaGridSettings.adminUrl,
 265                                         pushState: true
 266                                 } );
 267                         }
 268                 }
 269         });
 270
 271         /**
 272          * A similar view to media.view.Attachment.Details
 273          * for use in the Edit Attachment modal.
 274          *
 275          * @constructor
 276          * @augments wp.media.view.Attachment.Details
 277          * @augments wp.media.view.Attachment
 278          * @augments wp.media.View
 279          * @augments wp.Backbone.View
 280          * @augments Backbone.View
 281          */
 282         media.view.Attachment.Details.TwoColumn = media.view.Attachment.Details.extend({
 283                 template: media.template( 'attachment-details-two-column' ),
 284
 285                 editAttachment: function( event ) {
 286                         event.preventDefault();
 287                         this.controller.content.mode( 'edit-image' );
 288                 },
 289
 290                 /**
 291                  * Noop this from parent class, doesn't apply here.
 292                  */
 293                 toggleSelectionHandler: function() {},
 294
 295                 render: function() {
 296                         media.view.Attachment.Details.prototype.render.apply( this, arguments );
 297
 298                         media.mixin.removeAllPlayers();
 299                         this.$( 'audio, video' ).each( function (i, elem) {
 300                                 var el = media.view.MediaDetails.prepareSrc( elem );
 301                                 new MediaElementPlayer( el, media.mixin.mejsSettings );
 302                         } );
 303                 }
 304         });
 305
 306         /**
 307          * A router for handling the browser history and application state.
 308          *
 309          * @constructor
 310          * @augments Backbone.Router
 311          */
 312         media.view.MediaFrame.Manage.Router = Backbone.Router.extend({
 313                 routes: {
 314                         'upload.php?item=:slug':    'showItem',
 315                         'upload.php?search=:query': 'search'
 316                 },
 317
 318                 // Map routes against the page URL
 319                 baseUrl: function( url ) {
 320                         return 'upload.php' + url;
 321                 },
 322
 323                 // Respond to the search route by filling the search field and trigggering the input event
 324                 search: function( query ) {
 325                         $( '#media-search-input' ).val( query ).trigger( 'input' );
 326                 },
 327
 328                 // Show the modal with a specific item
 329                 showItem: function( query ) {
 330                         var library = media.frame.state().get('library'), item;
 331
 332                         // Trigger the media frame to open the correct item
 333                         item = library.findWhere( { id: parseInt( query, 10 ) } );
 334                         if ( item ) {
 335                                 media.frame.trigger( 'edit:attachment', item );
 336                         } else {
 337                                 item = media.attachment( query );
 338                                 media.frame.listenTo( item, 'change', function( model ) {
 339                                         media.frame.stopListening( item );
 340                                         media.frame.trigger( 'edit:attachment', model );
 341                                 } );
 342                                 item.fetch();
 343                         }
 344                 }
 345         });
 346
 347         media.view.EditImage.Details = media.view.EditImage.extend({
 348                 initialize: function( options ) {
 349                         this.editor = window.imageEdit;
 350                         this.frame = options.frame;
 351                         this.controller = options.controller;
 352                         media.View.prototype.initialize.apply( this, arguments );
 353                 },
 354
 355                 back: function() {
 356                         this.frame.content.mode( 'edit-metadata' );
 357                 },
 358
 359                 save: function() {
 360                         var self = this;
 361
 362                         this.model.fetch().done( function() {
 363                                 self.frame.content.mode( 'edit-metadata' );
 364                         });
 365                 }
 366         });
 367
 368         /**
 369          * A frame for editing the details of a specific media item.
 370          *
 371          * Opens in a modal by default.
 372          *
 373          * Requires an attachment model to be passed in the options hash under `model`.
 374          *
 375          * @constructor
 376          * @augments wp.media.view.Frame
 377          * @augments wp.media.View
 378          * @augments wp.Backbone.View
 379          * @augments Backbone.View
 380          * @mixes wp.media.controller.StateMachine
 381          */
 382         media.view.MediaFrame.EditAttachments = media.view.MediaFrame.extend({
 383
 384                 className: 'edit-attachment-frame',
 385                 template: media.template( 'edit-attachment-frame' ),
 386                 regions:   [ 'title', 'content' ],
 387
 388                 events: {
 389                         'click .left':  'previousMediaItem',
 390                         'click .right': 'nextMediaItem'
 391                 },
 392
 393                 initialize: function() {
 394                         media.view.Frame.prototype.initialize.apply( this, arguments );
 395
 396                         _.defaults( this.options, {
 397                                 modal: true,
 398                                 state: 'edit-attachment'
 399                         });
 400
 401                         this.controller = this.options.controller;
 402                         this.gridRouter = this.controller.gridRouter;
 403                         this.library = this.options.library;
 404
 405                         if ( this.options.model ) {
 406                                 this.model = this.options.model;
 407                         }
 408
 409                         this.bindHandlers();
 410                         this.createStates();
 411                         this.createModal();
 412
 413                         this.title.mode( 'default' );
 414                         this.toggleNav();
 415                 },
 416
 417                 bindHandlers: function() {
 418                         // Bind default title creation.
 419                         this.on( 'title:create:default', this.createTitle, this );
 420
 421                         // Close the modal if the attachment is deleted.
 422                         this.listenTo( this.model, 'change:status destroy', this.close, this );
 423
 424                         this.on( 'content:create:edit-metadata', this.editMetadataMode, this );
 425                         this.on( 'content:create:edit-image', this.editImageMode, this );
 426                         this.on( 'content:render:edit-image', this.editImageModeRender, this );
 427                         this.on( 'close', this.detach );
 428                 },
 429
 430                 createModal: function() {
 431                         var self = this;
 432
 433                         // Initialize modal container view.
 434                         if ( this.options.modal ) {
 435                                 this.modal = new media.view.Modal({
 436                                         controller: this,
 437                                         title:      this.options.title
 438                                 });
 439
 440                                 this.modal.on( 'open', function () {
 441                                         $( 'body' ).on( 'keydown.media-modal', _.bind( self.keyEvent, self ) );
 442                                 } );
 443
 444                                 // Completely destroy the modal DOM element when closing it.
 445                                 this.modal.on( 'close', function() {
 446                                         self.modal.remove();
 447                                         $( 'body' ).off( 'keydown.media-modal' ); /* remove the keydown event */
 448                                         // Restore the original focus item if possible
 449                                         $( 'li.attachment[data-id="' + self.model.get( 'id' ) +'"]' ).focus();
 450                                         self.resetRoute();
 451                                 } );
 452
 453                                 // Set this frame as the modal's content.
 454                                 this.modal.content( this );
 455                                 this.modal.open();
 456                         }
 457                 },
 458
 459                 /**
 460                  * Add the default states to the frame.
 461                  */
 462                 createStates: function() {
 463                         this.states.add([
 464                                 new media.controller.EditAttachmentMetadata( { model: this.model } )
 465                         ]);
 466                 },
 467
 468                 /**
 469                  * Content region rendering callback for the `edit-metadata` mode.
 470                  *
 471                  * @param {Object} contentRegion Basic object with a `view` property, which
 472                  *                               should be set with the proper region view.
 473                  */
 474                 editMetadataMode: function( contentRegion ) {
 475                         contentRegion.view = new media.view.Attachment.Details.TwoColumn({
 476                                 controller: this,
 477                                 model:      this.model
 478                         });
 479
 480                         /**
 481                          * Attach a subview to display fields added via the
 482                          * `attachment_fields_to_edit` filter.
 483                          */
 484                         contentRegion.view.views.set( '.attachment-compat', new media.view.AttachmentCompat({
 485                                 controller: this,
 486                                 model:      this.model
 487                         }) );
 488
 489                         // Update browser url when navigating media details
 490                         if ( this.model ) {
 491                                 this.gridRouter.navigate( this.gridRouter.baseUrl( '?item=' + this.model.id ) );
 492                         }
 493                 },
 494
 495                 /**
 496                  * Render the EditImage view into the frame's content region.
 497                  *
 498                  * @param {Object} contentRegion Basic object with a `view` property, which
 499                  *                               should be set with the proper region view.
 500                  */
 501                 editImageMode: function( contentRegion ) {
 502                         var editImageController = new media.controller.EditImage( {
 503                                 model: this.model,
 504                                 frame: this
 505                         } );
 506                         // Noop some methods.
 507                         editImageController._toolbar = function() {};
 508                         editImageController._router = function() {};
 509                         editImageController._menu = function() {};
 510
 511                         contentRegion.view = new media.view.EditImage.Details( {
 512                                 model: this.model,
 513                                 frame: this,
 514                                 controller: editImageController
 515                         } );
 516                 },
 517
 518                 editImageModeRender: function( view ) {
 519                         view.on( 'ready', view.loadEditor );
 520                 },
 521
 522                 toggleNav: function() {
 523                         this.$('.left').toggleClass( 'disabled', ! this.hasPrevious() );
 524                         this.$('.right').toggleClass( 'disabled', ! this.hasNext() );
 525                 },
 526
 527                 /**
 528                  * Rerender the view.
 529                  */
 530                 rerender: function() {
 531                         // Only rerender the `content` region.
 532                         if ( this.content.mode() !== 'edit-metadata' ) {
 533                                 this.content.mode( 'edit-metadata' );
 534                         } else {
 535                                 this.content.render();
 536                         }
 537
 538                         this.toggleNav();
 539                 },
 540
 541                 /**
 542                  * Click handler to switch to the previous media item.
 543                  */
 544                 previousMediaItem: function() {
 545                         if ( ! this.hasPrevious() ) {
 546                                 this.$( '.left' ).blur();
 547                                 return;
 548                         }
 549                         this.model = this.library.at( this.getCurrentIndex() - 1 );
 550                         this.rerender();
 551                         this.$( '.left' ).focus();
 552                 },
 553
 554                 /**
 555                  * Click handler to switch to the next media item.
 556                  */
 557                 nextMediaItem: function() {
 558                         if ( ! this.hasNext() ) {
 559                                 this.$( '.right' ).blur();
 560                                 return;
 561                         }
 562                         this.model = this.library.at( this.getCurrentIndex() + 1 );
 563                         this.rerender();
 564                         this.$( '.right' ).focus();
 565                 },
 566
 567                 getCurrentIndex: function() {
 568                         return this.library.indexOf( this.model );
 569                 },
 570
 571                 hasNext: function() {
 572                         return ( this.getCurrentIndex() + 1 ) < this.library.length;
 573                 },
 574
 575                 hasPrevious: function() {
 576                         return ( this.getCurrentIndex() - 1 ) > -1;
 577                 },
 578                 /**
 579                  * Respond to the keyboard events: right arrow, left arrow, except when
 580                  * focus is in a textarea or input field.
 581                  */
 582                 keyEvent: function( event ) {
 583                         if ( ( 'INPUT' === event.target.nodeName || 'TEXTAREA' === event.target.nodeName ) && ! ( event.target.readOnly || event.target.disabled ) ) {
 584                                 return;
 585                         }
 586
 587                         // The right arrow key
 588                         if ( 39 === event.keyCode ) {
 589                                 this.nextMediaItem();
 590                         }
 591                         // The left arrow key
 592                         if ( 37 === event.keyCode ) {
 593                                 this.previousMediaItem();
 594                         }
 595                 },
 596
 597                 resetRoute: function() {
 598                         this.gridRouter.navigate( this.gridRouter.baseUrl( '' ) );
 599                 }
 600         });
 601
 602         media.view.SelectModeToggleButton = media.view.Button.extend({
 603                 initialize: function() {
 604                         media.view.Button.prototype.initialize.apply( this, arguments );
 605                         this.listenTo( this.controller, 'select:activate select:deactivate', this.toggleBulkEditHandler );
 606                         this.listenTo( this.controller, 'selection:action:done', this.back );
 607                 },
 608
 609                 back: function () {
 610                         this.controller.deactivateMode( 'select' ).activateMode( 'edit' );
 611                 },
 612
 613                 click: function() {
 614                         media.view.Button.prototype.click.apply( this, arguments );
 615                         if ( this.controller.isModeActive( 'select' ) ) {
 616                                 this.back();
 617                         } else {
 618                                 this.controller.deactivateMode( 'edit' ).activateMode( 'select' );
 619                         }
 620                 },
 621
 622                 render: function() {
 623                         media.view.Button.prototype.render.apply( this, arguments );
 624                         this.$el.addClass( 'select-mode-toggle-button' );
 625                         return this;
 626                 },
 627
 628                 toggleBulkEditHandler: function() {
 629                         var toolbar = this.controller.content.get().toolbar, children;
 630
 631                         children = toolbar.$( '.media-toolbar-secondary > *, .media-toolbar-primary > *');
 632
 633                         // TODO: the Frame should be doing all of this.
 634                         if ( this.controller.isModeActive( 'select' ) ) {
 635                                 this.model.set( 'text', l10n.cancelSelection );
 636                                 children.not( '.media-button' ).hide();
 637                                 this.$el.show();
 638                                 toolbar.$( '.delete-selected-button' ).removeClass( 'hidden' );
 639                         } else {
 640                                 this.model.set( 'text', l10n.bulkSelect );
 641                                 this.controller.content.get().$el.removeClass( 'fixed' );
 642                                 toolbar.$el.css( 'width', '' );
 643                                 toolbar.$( '.delete-selected-button' ).addClass( 'hidden' );
 644                                 children.not( '.spinner, .media-button' ).show();
 645                                 this.controller.state().get( 'selection' ).reset();
 646                         }
 647                 }
 648         });
 649
 650         /**
 651          * A button that handles bulk Delete/Trash logic
 652          *
 653          * @constructor
 654          * @augments wp.media.view.Button
 655          * @augments wp.media.View
 656          * @augments wp.Backbone.View
 657          * @augments Backbone.View
 658          */
 659         media.view.DeleteSelectedButton = media.view.Button.extend({
 660                 initialize: function() {
 661                         media.view.Button.prototype.initialize.apply( this, arguments );
 662                         if ( this.options.filters ) {
 663                                 this.listenTo( this.options.filters.model, 'change', this.filterChange );
 664                         }
 665                         this.listenTo( this.controller, 'selection:toggle', this.toggleDisabled );
 666                 },
 667
 668                 filterChange: function( model ) {
 669                         if ( 'trash' === model.get( 'status' ) ) {
 670                                 this.model.set( 'text', l10n.untrashSelected );
 671                         } else if ( media.view.settings.mediaTrash ) {
 672                                 this.model.set( 'text', l10n.trashSelected );
 673                         } else {
 674                                 this.model.set( 'text', l10n.deleteSelected );
 675                         }
 676                 },
 677
 678                 toggleDisabled: function() {
 679                         this.model.set( 'disabled', ! this.controller.state().get( 'selection' ).length );
 680                 },
 681
 682                 render: function() {
 683                         media.view.Button.prototype.render.apply( this, arguments );
 684                         if ( this.controller.isModeActive( 'select' ) ) {
 685                                 this.$el.addClass( 'delete-selected-button' );
 686                         } else {
 687                                 this.$el.addClass( 'delete-selected-button hidden' );
 688                         }
 689                         this.toggleDisabled();
 690                         return this;
 691                 }
 692         });
 693
 694         /**
 695          * When MEDIA_TRASH is true, a button that handles bulk Delete Permanently logic
 696          *
 697          * @constructor
 698          * @augments wp.media.view.DeleteSelectedButton
 699          * @augments wp.media.view.Button
 700          * @augments wp.media.View
 701          * @augments wp.Backbone.View
 702          * @augments Backbone.View
 703          */
 704         media.view.DeleteSelectedPermanentlyButton = media.view.DeleteSelectedButton.extend({
 705                 initialize: function() {
 706                         media.view.DeleteSelectedButton.prototype.initialize.apply( this, arguments );
 707                         this.listenTo( this.controller, 'select:activate', this.selectActivate );
 708                         this.listenTo( this.controller, 'select:deactivate', this.selectDeactivate );
 709                 },
 710
 711                 filterChange: function( model ) {
 712                         this.canShow = ( 'trash' === model.get( 'status' ) );
 713                 },
 714
 715                 selectActivate: function() {
 716                         this.toggleDisabled();
 717                         this.$el.toggleClass( 'hidden', ! this.canShow );
 718                 },
 719
 720                 selectDeactivate: function() {
 721                         this.toggleDisabled();
 722                         this.$el.addClass( 'hidden' );
 723                 },
 724
 725                 render: function() {
 726                         media.view.Button.prototype.render.apply( this, arguments );
 727                         this.selectActivate();
 728                         return this;
 729                 }
 730         });
 731
 732 }(jQuery, _, Backbone, wp));