resources/src/mediawiki.rcfilters/ui/mw.rcfilters.ui.FilterTagMultiselectWidget.js

   1 ( function ( mw ) {
   2         /**
   3          * List displaying all filter groups
   4          *
   5          * @class
   6          * @extends OO.ui.MenuTagMultiselectWidget
   7          * @mixins OO.ui.mixin.PendingElement
   8          *
   9          * @constructor
  10          * @param {mw.rcfilters.Controller} controller Controller
  11          * @param {mw.rcfilters.dm.FiltersViewModel} model View model
  12          * @param {mw.rcfilters.dm.SavedQueriesModel} savedQueriesModel Saved queries model
  13          * @param {Object} config Configuration object
  14          * @cfg {jQuery} [$overlay] A jQuery object serving as overlay for popups
  15          */
  16         mw.rcfilters.ui.FilterTagMultiselectWidget = function MwRcfiltersUiFilterTagMultiselectWidget( controller, model, savedQueriesModel, config ) {
  17                 var rcFiltersRow,
  18                         title = new OO.ui.LabelWidget( {
  19                                 label: mw.msg( 'rcfilters-activefilters' ),
  20                                 classes: [ 'mw-rcfilters-ui-filterTagMultiselectWidget-wrapper-content-title' ]
  21                         } ),
  22                         $contentWrapper = $( '<div>' )
  23                                 .addClass( 'mw-rcfilters-ui-filterTagMultiselectWidget-wrapper' );
  24
  25                 config = config || {};
  26
  27                 this.controller = controller;
  28                 this.model = model;
  29                 this.queriesModel = savedQueriesModel;
  30                 this.$overlay = config.$overlay || this.$element;
  31                 this.matchingQuery = null;
  32                 this.currentView = this.model.getCurrentView();
  33
  34                 // Parent
  35                 mw.rcfilters.ui.FilterTagMultiselectWidget.parent.call( this, $.extend( true, {
  36                         label: mw.msg( 'rcfilters-filterlist-title' ),
  37                         placeholder: mw.msg( 'rcfilters-empty-filter' ),
  38                         inputPosition: 'outline',
  39                         allowArbitrary: false,
  40                         allowDisplayInvalidTags: false,
  41                         allowReordering: false,
  42                         $overlay: this.$overlay,
  43                         menu: {
  44                                 hideWhenOutOfView: false,
  45                                 hideOnChoose: false,
  46                                 width: 650,
  47                                 footers: [
  48                                         {
  49                                                 name: 'viewSelect',
  50                                                 sticky: false,
  51                                                 // View select menu, appears on default view only
  52                                                 $element: $( '<div>' )
  53                                                         .append( new mw.rcfilters.ui.ViewSwitchWidget( this.controller, this.model ).$element ),
  54                                                 views: [ 'default' ]
  55                                         },
  56                                         {
  57                                                 name: 'feedback',
  58                                                 // Feedback footer, appears on all views
  59                                                 $element: $( '<div>' )
  60                                                         .append(
  61                                                                 new OO.ui.ButtonWidget( {
  62                                                                         framed: false,
  63                                                                         icon: 'feedback',
  64                                                                         flags: [ 'progressive' ],
  65                                                                         label: mw.msg( 'rcfilters-filterlist-feedbacklink' ),
  66                                                                         href: 'https://www.mediawiki.org/wiki/Help_talk:New_filters_for_edit_review'
  67                                                                 } ).$element
  68                                                         )
  69                                         }
  70                                 ]
  71                         },
  72                         input: {
  73                                 icon: 'menu',
  74                                 placeholder: mw.msg( 'rcfilters-search-placeholder' )
  75                         }
  76                 }, config ) );
  77
  78                 this.savedQueryTitle = new OO.ui.LabelWidget( {
  79                         label: '',
  80                         classes: [ 'mw-rcfilters-ui-filterTagMultiselectWidget-wrapper-content-savedQueryTitle' ]
  81                 } );
  82
  83                 this.resetButton = new OO.ui.ButtonWidget( {
  84                         framed: false,
  85                         classes: [ 'mw-rcfilters-ui-filterTagMultiselectWidget-resetButton' ]
  86                 } );
  87
  88                 if ( !mw.user.isAnon() ) {
  89                         this.saveQueryButton = new mw.rcfilters.ui.SaveFiltersPopupButtonWidget(
  90                                 this.controller,
  91                                 this.queriesModel
  92                         );
  93
  94                         this.saveQueryButton.$element.on( 'mousedown', function ( e ) { e.stopPropagation(); } );
  95
  96                         this.saveQueryButton.connect( this, {
  97                                 click: 'onSaveQueryButtonClick',
  98                                 saveCurrent: 'setSavedQueryVisibility'
  99                         } );
 100                         this.queriesModel.connect( this, { itemUpdate: 'onSavedQueriesItemUpdate' } );
 101                 }
 102
 103                 this.emptyFilterMessage = new OO.ui.LabelWidget( {
 104                         label: mw.msg( 'rcfilters-empty-filter' ),
 105                         classes: [ 'mw-rcfilters-ui-filterTagMultiselectWidget-emptyFilters' ]
 106                 } );
 107                 this.$content.append( this.emptyFilterMessage.$element );
 108
 109                 // Events
 110                 this.resetButton.connect( this, { click: 'onResetButtonClick' } );
 111                 // Stop propagation for mousedown, so that the widget doesn't
 112                 // trigger the focus on the input and scrolls up when we click the reset button
 113                 this.resetButton.$element.on( 'mousedown', function ( e ) { e.stopPropagation(); } );
 114                 this.model.connect( this, {
 115                         initialize: 'onModelInitialize',
 116                         update: 'onModelUpdate',
 117                         itemUpdate: 'onModelItemUpdate',
 118                         highlightChange: 'onModelHighlightChange'
 119                 } );
 120                 this.input.connect( this, { change: 'onInputChange' } );
 121
 122                 // The filter list and button should appear side by side regardless of how
 123                 // wide the button is; the button also changes its width depending
 124                 // on language and its state, so the safest way to present both side
 125                 // by side is with a table layout
 126                 rcFiltersRow = $( '<div>' )
 127                         .addClass( 'mw-rcfilters-ui-row' )
 128                         .append(
 129                                 this.$content
 130                                         .addClass( 'mw-rcfilters-ui-cell' )
 131                                         .addClass( 'mw-rcfilters-ui-filterTagMultiselectWidget-cell-filters' )
 132                         );
 133
 134                 if ( !mw.user.isAnon() ) {
 135                         rcFiltersRow.append(
 136                                 $( '<div>' )
 137                                         .addClass( 'mw-rcfilters-ui-cell' )
 138                                         .addClass( 'mw-rcfilters-ui-filterTagMultiselectWidget-cell-save' )
 139                                         .append( this.saveQueryButton.$element )
 140                         );
 141                 }
 142
 143                 // Add a selector at the right of the input
 144                 this.viewsSelectWidget = new OO.ui.ButtonSelectWidget( {
 145                         classes: [ 'mw-rcfilters-ui-filterTagMultiselectWidget-views-select-widget' ],
 146                         items: [
 147                                 new OO.ui.ButtonOptionWidget( {
 148                                         framed: false,
 149                                         data: '',
 150                                         disabled: true,
 151                                         classes: [ 'mw-rcfilters-ui-filterTagMultiselectWidget-views-select-widget-label' ],
 152                                         label: mw.msg( 'rcfilters-view-advanced-filters-label' )
 153                                 } ),
 154                                 new OO.ui.ButtonOptionWidget( {
 155                                         framed: false,
 156                                         data: 'namespaces',
 157                                         icon: 'article',
 158                                         title: mw.msg( 'rcfilters-view-namespaces-tooltip' )
 159                                 } ),
 160                                 new OO.ui.ButtonOptionWidget( {
 161                                         framed: false,
 162                                         data: 'tags',
 163                                         icon: 'tag',
 164                                         title: mw.msg( 'rcfilters-view-tags-tooltip' )
 165                                 } )
 166                         ]
 167                 } );
 168
 169                 // Rearrange the UI so the select widget is at the right of the input
 170                 this.$element.append(
 171                         $( '<div>' )
 172                                 .addClass( 'mw-rcfilters-ui-table' )
 173                                 .append(
 174                                         $( '<div>' )
 175                                                 .addClass( 'mw-rcfilters-ui-row' )
 176                                                 .append(
 177                                                         $( '<div>' )
 178                                                                 .addClass( 'mw-rcfilters-ui-cell' )
 179                                                                 .addClass( 'mw-rcfilters-ui-filterTagMultiselectWidget-views-input' )
 180                                                                 .append( this.input.$element ),
 181                                                         $( '<div>' )
 182                                                                 .addClass( 'mw-rcfilters-ui-cell' )
 183                                                                 .addClass( 'mw-rcfilters-ui-filterTagMultiselectWidget-views-select' )
 184                                                                 .append( this.viewsSelectWidget.$element )
 185                                                 )
 186                                 )
 187                 );
 188
 189                 // Event
 190                 this.viewsSelectWidget.connect( this, { choose: 'onViewsSelectWidgetChoose' } );
 191
 192                 rcFiltersRow.append(
 193                         $( '<div>' )
 194                                 .addClass( 'mw-rcfilters-ui-cell' )
 195                                 .addClass( 'mw-rcfilters-ui-filterTagMultiselectWidget-cell-reset' )
 196                                 .append( this.resetButton.$element )
 197                 );
 198
 199                 // Build the content
 200                 $contentWrapper.append(
 201                         title.$element,
 202                         this.savedQueryTitle.$element,
 203                         $( '<div>' )
 204                                 .addClass( 'mw-rcfilters-ui-table' )
 205                                 .append(
 206                                         rcFiltersRow
 207                                 )
 208                 );
 209
 210                 // Initialize
 211                 this.$handle.append( $contentWrapper );
 212                 this.emptyFilterMessage.toggle( this.isEmpty() );
 213                 this.savedQueryTitle.toggle( false );
 214
 215                 this.$element
 216                         .addClass( 'mw-rcfilters-ui-filterTagMultiselectWidget' );
 217
 218                 this.reevaluateResetRestoreState();
 219         };
 220
 221         /* Initialization */
 222
 223         OO.inheritClass( mw.rcfilters.ui.FilterTagMultiselectWidget, OO.ui.MenuTagMultiselectWidget );
 224
 225         /* Methods */
 226
 227         /**
 228          * Respond to view select widget choose event
 229          *
 230          * @param {OO.ui.ButtonOptionWidget} buttonOptionWidget Chosen widget
 231          */
 232         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.onViewsSelectWidgetChoose = function ( buttonOptionWidget ) {
 233                 this.controller.switchView( buttonOptionWidget.getData() );
 234                 this.viewsSelectWidget.selectItem( null );
 235                 this.focus();
 236         };
 237
 238         /**
 239          * Respond to input change event
 240          *
 241          * @param {string} value Value of the input
 242          */
 243         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.onInputChange = function ( value ) {
 244                 var view;
 245
 246                 value = value.trim();
 247
 248                 view = this.model.getViewByTrigger( value.substr( 0, 1 ) );
 249
 250                 this.controller.switchView( view );
 251         };
 252         /**
 253          * Respond to query button click
 254          */
 255         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.onSaveQueryButtonClick = function () {
 256                 this.getMenu().toggle( false );
 257         };
 258
 259         /**
 260          * Respond to save query item change. Mainly this is done to update the label in case
 261          * a query item has been edited
 262          *
 263          * @param {mw.rcfilters.dm.SavedQueryItemModel} item Saved query item
 264          */
 265         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.onSavedQueriesItemUpdate = function ( item ) {
 266                 if ( this.matchingQuery === item ) {
 267                         // This means we just edited the item that is currently matched
 268                         this.savedQueryTitle.setLabel( item.getLabel() );
 269                 }
 270         };
 271
 272         /**
 273          * Respond to menu toggle
 274          *
 275          * @param {boolean} isVisible Menu is visible
 276          */
 277         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.onMenuToggle = function ( isVisible ) {
 278                 // Parent
 279                 mw.rcfilters.ui.FilterTagMultiselectWidget.parent.prototype.onMenuToggle.call( this );
 280
 281                 if ( isVisible ) {
 282                         mw.hook( 'RcFilters.popup.open' ).fire();
 283
 284                         if ( !this.getMenu().getSelectedItem() ) {
 285                                 // If there are no selected items, scroll menu to top
 286                                 // This has to be in a setTimeout so the menu has time
 287                                 // to be positioned and fixed
 288                                 setTimeout( function () { this.getMenu().scrollToTop(); }.bind( this ), 0 );
 289                         }
 290                 } else {
 291                         // Clear selection
 292                         this.selectTag( null );
 293
 294                         // Clear input if the only thing in the input is the prefix
 295                         if (
 296                                 this.input.getValue().trim() === this.model.getViewTrigger( this.model.getCurrentView() )
 297                         ) {
 298                                 // Clear the input
 299                                 this.input.setValue( '' );
 300                         }
 301
 302                         // Log filter grouping
 303                         this.controller.trackFilterGroupings( 'filtermenu' );
 304                 }
 305
 306                 this.input.setIcon( isVisible ? 'search' : 'menu' );
 307         };
 308
 309         /**
 310          * @inheritdoc
 311          */
 312         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.onInputFocus = function () {
 313                 // Parent
 314                 mw.rcfilters.ui.FilterTagMultiselectWidget.parent.prototype.onInputFocus.call( this );
 315
 316                 // Scroll to top
 317                 this.scrollToTop( this.$element );
 318         };
 319
 320         /**
 321          * @inheritdoc
 322          */
 323         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.doInputEscape = function () {
 324                 // Parent
 325                 mw.rcfilters.ui.FilterTagMultiselectWidget.parent.prototype.doInputEscape.call( this );
 326
 327                 // Blur the input
 328                 this.input.$input.blur();
 329         };
 330
 331         /**
 332          * @inheritdoc
 333          */
 334         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.onChangeTags = function () {
 335                 // Parent method
 336                 mw.rcfilters.ui.FilterTagMultiselectWidget.parent.prototype.onChangeTags.call( this );
 337
 338                 this.emptyFilterMessage.toggle( this.isEmpty() );
 339         };
 340
 341         /**
 342          * Respond to model initialize event
 343          */
 344         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.onModelInitialize = function () {
 345                 this.setSavedQueryVisibility();
 346         };
 347
 348         /**
 349          * Respond to model update event
 350          */
 351         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.onModelUpdate = function () {
 352                 this.updateElementsForView();
 353         };
 354
 355         /**
 356          * Update the elements in the widget to the current view
 357          */
 358         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.updateElementsForView = function () {
 359                 var view = this.model.getCurrentView(),
 360                         inputValue = this.input.getValue().trim(),
 361                         inputView = this.model.getViewByTrigger( inputValue.substr( 0, 1 ) );
 362
 363                 if ( inputView !== 'default' ) {
 364                         // We have a prefix already, remove it
 365                         inputValue = inputValue.substr( 1 );
 366                 }
 367
 368                 if ( inputView !== view ) {
 369                         // Add the correct prefix
 370                         inputValue = this.model.getViewTrigger( view ) + inputValue;
 371                 }
 372
 373                 // Update input
 374                 this.input.setValue( inputValue );
 375
 376                 if ( this.currentView !== view ) {
 377                         this.scrollToTop( this.$element );
 378                         this.currentView = view;
 379                 }
 380         };
 381
 382         /**
 383          * Set the visibility of the saved query button
 384          */
 385         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.setSavedQueryVisibility = function () {
 386                 if ( mw.user.isAnon() ) {
 387                         return;
 388                 }
 389
 390                 this.matchingQuery = this.controller.findQueryMatchingCurrentState();
 391
 392                 this.savedQueryTitle.setLabel(
 393                         this.matchingQuery ? this.matchingQuery.getLabel() : ''
 394                 );
 395                 this.savedQueryTitle.toggle( !!this.matchingQuery );
 396                 this.saveQueryButton.toggle(
 397                         !this.isEmpty() &&
 398                         !this.matchingQuery
 399                 );
 400
 401                 if ( this.matchingQuery ) {
 402                         this.emphasize();
 403                 }
 404         };
 405
 406         /**
 407          * Respond to model itemUpdate event
 408          *
 409          * @param {mw.rcfilters.dm.FilterItem} item Filter item model
 410          */
 411         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.onModelItemUpdate = function ( item ) {
 412                 if ( item.getGroupModel().isHidden() ) {
 413                         return;
 414                 }
 415
 416                 if (
 417                         item.isSelected() ||
 418                         (
 419                                 this.model.isHighlightEnabled() &&
 420                                 item.isHighlightSupported() &&
 421                                 item.getHighlightColor()
 422                         )
 423                 ) {
 424                         this.addTag( item.getName(), item.getLabel() );
 425                 } else {
 426                         this.removeTagByData( item.getName() );
 427                 }
 428
 429                 this.setSavedQueryVisibility();
 430
 431                 // Re-evaluate reset state
 432                 this.reevaluateResetRestoreState();
 433         };
 434
 435         /**
 436          * @inheritdoc
 437          */
 438         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.isAllowedData = function ( data ) {
 439                 return (
 440                         this.model.getItemByName( data ) &&
 441                         !this.isDuplicateData( data )
 442                 );
 443         };
 444
 445         /**
 446          * @inheritdoc
 447          */
 448         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.onMenuChoose = function ( item ) {
 449                 this.controller.toggleFilterSelect( item.model.getName() );
 450
 451                 // Select the tag if it exists, or reset selection otherwise
 452                 this.selectTag( this.getItemFromData( item.model.getName() ) );
 453
 454                 this.focus();
 455         };
 456
 457         /**
 458          * Respond to highlightChange event
 459          *
 460          * @param {boolean} isHighlightEnabled Highlight is enabled
 461          */
 462         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.onModelHighlightChange = function ( isHighlightEnabled ) {
 463                 var highlightedItems = this.model.getHighlightedItems();
 464
 465                 if ( isHighlightEnabled ) {
 466                         // Add capsule widgets
 467                         highlightedItems.forEach( function ( filterItem ) {
 468                                 this.addTag( filterItem.getName(), filterItem.getLabel() );
 469                         }.bind( this ) );
 470                 } else {
 471                         // Remove capsule widgets if they're not selected
 472                         highlightedItems.forEach( function ( filterItem ) {
 473                                 if ( !filterItem.isSelected() ) {
 474                                         this.removeTagByData( filterItem.getName() );
 475                                 }
 476                         }.bind( this ) );
 477                 }
 478         };
 479
 480         /**
 481          * @inheritdoc
 482          */
 483         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.onTagSelect = function ( tagItem ) {
 484                 var widget = this,
 485                         menuOption = this.menu.getItemFromModel( tagItem.getModel() ),
 486                         oldInputValue = this.input.getValue().trim();
 487
 488                 this.menu.setUserSelecting( true );
 489
 490                 // Reset input
 491                 this.input.setValue( '' );
 492
 493                 // Switch view
 494                 this.controller.switchView( tagItem.getView() );
 495
 496                 // Parent method
 497                 mw.rcfilters.ui.FilterTagMultiselectWidget.parent.prototype.onTagSelect.call( this, tagItem );
 498
 499                 this.menu.selectItem( menuOption );
 500                 this.selectTag( tagItem );
 501
 502                 // Scroll to the item
 503                 if ( this.model.removeViewTriggers( oldInputValue ) ) {
 504                         // We're binding a 'once' to the itemVisibilityChange event
 505                         // so this happens when the menu is ready after the items
 506                         // are visible again, in case this is done right after the
 507                         // user filtered the results
 508                         this.getMenu().once(
 509                                 'itemVisibilityChange',
 510                                 function () {
 511                                         widget.scrollToTop( menuOption.$element );
 512                                         widget.menu.setUserSelecting( false );
 513                                 }
 514                         );
 515                 } else {
 516                         this.scrollToTop( menuOption.$element );
 517                         this.menu.setUserSelecting( false );
 518                 }
 519
 520         };
 521
 522         /**
 523          * Select a tag by reference. This is what OO.ui.SelectWidget is doing.
 524          * If no items are given, reset selection from all.
 525          *
 526          * @param {mw.rcfilters.ui.FilterTagItemWidget} [item] Tag to select,
 527          *  omit to deselect all
 528          */
 529         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.selectTag = function ( item ) {
 530                 var i, len, selected;
 531
 532                 for ( i = 0, len = this.items.length; i < len; i++ ) {
 533                         selected = this.items[ i ] === item;
 534                         if ( this.items[ i ].isSelected() !== selected ) {
 535                                 this.items[ i ].toggleSelected( selected );
 536                         }
 537                 }
 538         };
 539         /**
 540          * @inheritdoc
 541          */
 542         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.onTagRemove = function ( tagItem ) {
 543                 // Parent method
 544                 mw.rcfilters.ui.FilterTagMultiselectWidget.parent.prototype.onTagRemove.call( this, tagItem );
 545
 546                 this.controller.clearFilter( tagItem.getName() );
 547
 548                 tagItem.destroy();
 549         };
 550
 551         /**
 552          * Respond to click event on the reset button
 553          */
 554         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.onResetButtonClick = function () {
 555                 if ( this.model.areCurrentFiltersEmpty() ) {
 556                         // Reset to default filters
 557                         this.controller.resetToDefaults();
 558                 } else {
 559                         // Reset to have no filters
 560                         this.controller.emptyFilters();
 561                 }
 562         };
 563
 564         /**
 565          * Reevaluate the restore state for the widget between setting to defaults and clearing all filters
 566          */
 567         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.reevaluateResetRestoreState = function () {
 568                 var defaultsAreEmpty = this.model.areDefaultFiltersEmpty(),
 569                         currFiltersAreEmpty = this.model.areCurrentFiltersEmpty(),
 570                         hideResetButton = currFiltersAreEmpty && defaultsAreEmpty;
 571
 572                 this.resetButton.setIcon(
 573                         currFiltersAreEmpty ? 'history' : 'trash'
 574                 );
 575
 576                 this.resetButton.setLabel(
 577                         currFiltersAreEmpty ? mw.msg( 'rcfilters-restore-default-filters' ) : ''
 578                 );
 579                 this.resetButton.setTitle(
 580                         currFiltersAreEmpty ? null : mw.msg( 'rcfilters-clear-all-filters' )
 581                 );
 582
 583                 this.resetButton.toggle( !hideResetButton );
 584                 this.emptyFilterMessage.toggle( currFiltersAreEmpty );
 585         };
 586
 587         /**
 588          * @inheritdoc
 589          */
 590         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.createMenuWidget = function ( menuConfig ) {
 591                 return new mw.rcfilters.ui.MenuSelectWidget(
 592                         this.controller,
 593                         this.model,
 594                         $.extend( {
 595                                 filterFromInput: true
 596                         }, menuConfig )
 597                 );
 598         };
 599
 600         /**
 601          * @inheritdoc
 602          */
 603         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.createTagItemWidget = function ( data ) {
 604                 var filterItem = this.model.getItemByName( data );
 605
 606                 if ( filterItem ) {
 607                         return new mw.rcfilters.ui.FilterTagItemWidget(
 608                                 this.controller,
 609                                 filterItem,
 610                                 {
 611                                         $overlay: this.$overlay
 612                                 }
 613                         );
 614                 }
 615         };
 616
 617         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.emphasize = function () {
 618                 if (
 619                         !this.$handle.hasClass( 'mw-rcfilters-ui-filterTagMultiselectWidget-animate' )
 620                 ) {
 621                         this.$handle
 622                                 .addClass( 'mw-rcfilters-ui-filterTagMultiselectWidget-emphasize' )
 623                                 .addClass( 'mw-rcfilters-ui-filterTagMultiselectWidget-animate' );
 624
 625                         setTimeout( function () {
 626                                 this.$handle
 627                                         .removeClass( 'mw-rcfilters-ui-filterTagMultiselectWidget-emphasize' );
 628
 629                                 setTimeout( function () {
 630                                         this.$handle
 631                                                 .removeClass( 'mw-rcfilters-ui-filterTagMultiselectWidget-animate' );
 632                                 }.bind( this ), 1000 );
 633                         }.bind( this ), 500 );
 634
 635                 }
 636         };
 637         /**
 638          * Scroll the element to top within its container
 639          *
 640          * @private
 641          * @param {jQuery} $element Element to position
 642          * @param {number} [marginFromTop] When scrolling the entire widget to the top, leave this
 643          *  much space (in pixels) above the widget.
 644          */
 645         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.scrollToTop = function ( $element, marginFromTop ) {
 646                 var container = OO.ui.Element.static.getClosestScrollableContainer( $element[ 0 ], 'y' ),
 647                         pos = OO.ui.Element.static.getRelativePosition( $element, $( container ) ),
 648                         containerScrollTop = $( container ).is( 'body, html' ) ? 0 : $( container ).scrollTop();
 649
 650                 // Scroll to item
 651                 $( container ).animate( {
 652                         scrollTop: containerScrollTop + pos.top - ( marginFromTop || 0 )
 653                 } );
 654         };
 655 }( mediaWiki ) );