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

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