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