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