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

   1 ( function ( mw ) {
   2         /**
   3          * List displaying all filter groups
   4          *
   5          * @class
   6          * @extends OO.ui.MenuTagMultiselectWidget
   7          * @mixins OO.ui.mixin.PendingElement
   8          *
   9          * @constructor
  10          * @param {mw.rcfilters.Controller} controller Controller
  11          * @param {mw.rcfilters.dm.FiltersViewModel} model View model
  12          * @param {mw.rcfilters.dm.SavedQueriesModel} savedQueriesModel Saved queries model
  13          * @param {Object} config Configuration object
  14          * @cfg {jQuery} [$overlay] A jQuery object serving as overlay for popups
  15          */
  16         mw.rcfilters.ui.FilterTagMultiselectWidget = function MwRcfiltersUiFilterTagMultiselectWidget( controller, model, savedQueriesModel, config ) {
  17                 var rcFiltersRow,
  18                         title = new OO.ui.LabelWidget( {
  19                                 label: mw.msg( 'rcfilters-activefilters' ),
  20                                 classes: [ 'mw-rcfilters-ui-filterTagMultiselectWidget-wrapper-content-title' ]
  21                         } ),
  22                         $contentWrapper = $( '<div>' )
  23                                 .addClass( 'mw-rcfilters-ui-filterTagMultiselectWidget-wrapper' );
  24
  25                 config = config || {};
  26
  27                 this.controller = controller;
  28                 this.model = model;
  29                 this.queriesModel = savedQueriesModel;
  30                 this.$overlay = config.$overlay || this.$element;
  31                 this.matchingQuery = null;
  32                 this.currentView = this.model.getCurrentView();
  33
  34                 // Parent
  35                 mw.rcfilters.ui.FilterTagMultiselectWidget.parent.call( this, $.extend( true, {
  36                         label: mw.msg( 'rcfilters-filterlist-title' ),
  37                         placeholder: mw.msg( 'rcfilters-empty-filter' ),
  38                         inputPosition: 'outline',
  39                         allowArbitrary: false,
  40                         allowDisplayInvalidTags: false,
  41                         allowReordering: false,
  42                         $overlay: this.$overlay,
  43                         menu: {
  44                                 hideWhenOutOfView: false,
  45                                 hideOnChoose: false,
  46                                 width: 650,
  47                                 footers: [
  48                                         {
  49                                                 name: 'viewSelect',
  50                                                 sticky: false,
  51                                                 // View select menu, appears on default view only
  52                                                 $element: $( '<div>' )
  53                                                         .append( new mw.rcfilters.ui.ViewSwitchWidget( this.controller, this.model ).$element ),
  54                                                 views: [ 'default' ]
  55                                         },
  56                                         {
  57                                                 name: 'feedback',
  58                                                 // Feedback footer, appears on all views
  59                                                 $element: $( '<div>' )
  60                                                         .append(
  61                                                                 new OO.ui.ButtonWidget( {
  62                                                                         framed: false,
  63                                                                         icon: 'feedback',
  64                                                                         flags: [ 'progressive' ],
  65                                                                         label: mw.msg( 'rcfilters-filterlist-feedbacklink' ),
  66                                                                         href: 'https://www.mediawiki.org/wiki/Help_talk:New_filters_for_edit_review'
  67                                                                 } ).$element
  68                                                         )
  69                                         }
  70                                 ]
  71                         },
  72                         input: {
  73                                 icon: 'menu',
  74                                 placeholder: mw.msg( 'rcfilters-search-placeholder' )
  75                         }
  76                 }, config ) );
  77
  78                 this.savedQueryTitle = new OO.ui.LabelWidget( {
  79                         label: '',
  80                         classes: [ 'mw-rcfilters-ui-filterTagMultiselectWidget-wrapper-content-savedQueryTitle' ]
  81                 } );
  82
  83                 this.resetButton = new OO.ui.ButtonWidget( {
  84                         framed: false,
  85                         classes: [ 'mw-rcfilters-ui-filterTagMultiselectWidget-resetButton' ]
  86                 } );
  87
  88                 if ( !mw.user.isAnon() ) {
  89                         this.saveQueryButton = new mw.rcfilters.ui.SaveFiltersPopupButtonWidget(
  90                                 this.controller,
  91                                 this.queriesModel
  92                         );
  93
  94                         this.saveQueryButton.$element.on( 'mousedown', function ( e ) { e.stopPropagation(); } );
  95
  96                         this.saveQueryButton.connect( this, {
  97                                 click: 'onSaveQueryButtonClick',
  98                                 saveCurrent: 'setSavedQueryVisibility'
  99                         } );
 100                         this.queriesModel.connect( this, { itemUpdate: 'onSavedQueriesItemUpdate' } );
 101                 }
 102
 103                 this.emptyFilterMessage = new OO.ui.LabelWidget( {
 104                         label: mw.msg( 'rcfilters-empty-filter' ),
 105                         classes: [ 'mw-rcfilters-ui-filterTagMultiselectWidget-emptyFilters' ]
 106                 } );
 107                 this.$content.append( this.emptyFilterMessage.$element );
 108
 109                 // Events
 110                 this.resetButton.connect( this, { click: 'onResetButtonClick' } );
 111                 // Stop propagation for mousedown, so that the widget doesn't
 112                 // trigger the focus on the input and scrolls up when we click the reset button
 113                 this.resetButton.$element.on( 'mousedown', function ( e ) { e.stopPropagation(); } );
 114                 this.model.connect( this, {
 115                         initialize: 'onModelInitialize',
 116                         update: 'onModelUpdate',
 117                         itemUpdate: 'onModelItemUpdate',
 118                         highlightChange: 'onModelHighlightChange'
 119                 } );
 120                 this.input.connect( this, { change: 'onInputChange' } );
 121
 122                 // The filter list and button should appear side by side regardless of how
 123                 // wide the button is; the button also changes its width depending
 124                 // on language and its state, so the safest way to present both side
 125                 // by side is with a table layout
 126                 rcFiltersRow = $( '<div>' )
 127                         .addClass( 'mw-rcfilters-ui-row' )
 128                         .append(
 129                                 this.$content
 130                                         .addClass( 'mw-rcfilters-ui-cell' )
 131                                         .addClass( 'mw-rcfilters-ui-filterTagMultiselectWidget-cell-filters' )
 132                         );
 133
 134                 if ( !mw.user.isAnon() ) {
 135                         rcFiltersRow.append(
 136                                 $( '<div>' )
 137                                         .addClass( 'mw-rcfilters-ui-cell' )
 138                                         .addClass( 'mw-rcfilters-ui-filterTagMultiselectWidget-cell-save' )
 139                                         .append( this.saveQueryButton.$element )
 140                         );
 141                 }
 142
 143                 // Add a selector at the right of the input
 144                 this.viewsSelectWidget = new OO.ui.ButtonSelectWidget( {
 145                         classes: [ 'mw-rcfilters-ui-filterTagMultiselectWidget-views-select-widget' ],
 146                         items: [
 147                                 new OO.ui.ButtonOptionWidget( {
 148                                         framed: false,
 149                                         data: '',
 150                                         disabled: true,
 151                                         classes: [ 'mw-rcfilters-ui-filterTagMultiselectWidget-views-select-widget-label' ],
 152                                         label: mw.msg( 'rcfilters-view-advanced-filters-label' )
 153                                 } ),
 154                                 new OO.ui.ButtonOptionWidget( {
 155                                         framed: false,
 156                                         data: 'namespaces',
 157                                         icon: 'article',
 158                                         title: mw.msg( 'rcfilters-view-namespaces-tooltip' )
 159                                 } ),
 160                                 new OO.ui.ButtonOptionWidget( {
 161                                         framed: false,
 162                                         data: 'tags',
 163                                         icon: 'tag',
 164                                         title: mw.msg( 'rcfilters-view-tags-tooltip' )
 165                                 } )
 166                         ]
 167                 } );
 168
 169                 // Rearrange the UI so the select widget is at the right of the input
 170                 this.$element.append(
 171                         $( '<div>' )
 172                                 .addClass( 'mw-rcfilters-ui-table' )
 173                                 .append(
 174                                         $( '<div>' )
 175                                                 .addClass( 'mw-rcfilters-ui-row' )
 176                                                 .append(
 177                                                         $( '<div>' )
 178                                                                 .addClass( 'mw-rcfilters-ui-cell' )
 179                                                                 .addClass( 'mw-rcfilters-ui-filterTagMultiselectWidget-views-input' )
 180                                                                 .append( this.input.$element ),
 181                                                         $( '<div>' )
 182                                                                 .addClass( 'mw-rcfilters-ui-cell' )
 183                                                                 .addClass( 'mw-rcfilters-ui-filterTagMultiselectWidget-views-select' )
 184                                                                 .append( this.viewsSelectWidget.$element )
 185                                                 )
 186                                 )
 187                 );
 188
 189                 // Event
 190                 this.viewsSelectWidget.connect( this, { choose: 'onViewsSelectWidgetChoose' } );
 191
 192                 rcFiltersRow.append(
 193                         $( '<div>' )
 194                                 .addClass( 'mw-rcfilters-ui-cell' )
 195                                 .addClass( 'mw-rcfilters-ui-filterTagMultiselectWidget-cell-reset' )
 196                                 .append( this.resetButton.$element )
 197                 );
 198
 199                 // Build the content
 200                 $contentWrapper.append(
 201                         title.$element,
 202                         this.savedQueryTitle.$element,
 203                         $( '<div>' )
 204                                 .addClass( 'mw-rcfilters-ui-table' )
 205                                 .append(
 206                                         rcFiltersRow
 207                                 )
 208                 );
 209
 210                 // Initialize
 211                 this.$handle.append( $contentWrapper );
 212                 this.emptyFilterMessage.toggle( this.isEmpty() );
 213                 this.savedQueryTitle.toggle( false );
 214
 215                 this.$element
 216                         .addClass( 'mw-rcfilters-ui-filterTagMultiselectWidget' );
 217
 218                 this.reevaluateResetRestoreState();
 219         };
 220
 221         /* Initialization */
 222
 223         OO.inheritClass( mw.rcfilters.ui.FilterTagMultiselectWidget, OO.ui.MenuTagMultiselectWidget );
 224
 225         /* Methods */
 226
 227         /**
 228          * Respond to view select widget choose event
 229          *
 230          * @param {OO.ui.ButtonOptionWidget} buttonOptionWidget Chosen widget
 231          */
 232         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.onViewsSelectWidgetChoose = function ( buttonOptionWidget ) {
 233                 this.controller.switchView( buttonOptionWidget.getData() );
 234                 this.viewsSelectWidget.selectItem( null );
 235                 this.focus();
 236         };
 237
 238         /**
 239          * Respond to input change event
 240          *
 241          * @param {string} value Value of the input
 242          */
 243         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.onInputChange = function ( value ) {
 244                 var view;
 245
 246                 value = value.trim();
 247
 248                 view = this.model.getViewByTrigger( value.substr( 0, 1 ) );
 249
 250                 this.controller.switchView( view );
 251         };
 252         /**
 253          * Respond to query button click
 254          */
 255         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.onSaveQueryButtonClick = function () {
 256                 this.getMenu().toggle( false );
 257         };
 258
 259         /**
 260          * Respond to save query item change. Mainly this is done to update the label in case
 261          * a query item has been edited
 262          *
 263          * @param {mw.rcfilters.dm.SavedQueryItemModel} item Saved query item
 264          */
 265         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.onSavedQueriesItemUpdate = function ( item ) {
 266                 if ( this.matchingQuery === item ) {
 267                         // This means we just edited the item that is currently matched
 268                         this.savedQueryTitle.setLabel( item.getLabel() );
 269                 }
 270         };
 271
 272         /**
 273          * Respond to menu toggle
 274          *
 275          * @param {boolean} isVisible Menu is visible
 276          */
 277         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.onMenuToggle = function ( isVisible ) {
 278                 // Parent
 279                 mw.rcfilters.ui.FilterTagMultiselectWidget.parent.prototype.onMenuToggle.call( this );
 280
 281                 if ( isVisible ) {
 282                         mw.hook( 'RcFilters.popup.open' ).fire();
 283
 284                         if ( !this.getMenu().getSelectedItem() ) {
 285                                 // If there are no selected items, scroll menu to top
 286                                 // This has to be in a setTimeout so the menu has time
 287                                 // to be positioned and fixed
 288                                 setTimeout( function () { this.getMenu().scrollToTop(); }.bind( this ), 0 );
 289                         }
 290                 } else {
 291                         // Clear selection
 292                         this.selectTag( null );
 293
 294                         // Clear input if the only thing in the input is the prefix
 295                         if (
 296                                 this.input.getValue().trim() === this.model.getViewTrigger( this.model.getCurrentView() )
 297                         ) {
 298                                 // Clear the input
 299                                 this.input.setValue( '' );
 300                         }
 301
 302                         // Log filter grouping
 303                         this.controller.trackFilterGroupings( 'filtermenu' );
 304                 }
 305
 306                 this.input.setIcon( isVisible ? 'search' : 'menu' );
 307         };
 308
 309         /**
 310          * @inheritdoc
 311          */
 312         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.onInputFocus = function () {
 313                 // Parent
 314                 mw.rcfilters.ui.FilterTagMultiselectWidget.parent.prototype.onInputFocus.call( this );
 315
 316                 // Only scroll to top of the viewport if:
 317                 // - The widget is more than 20px from the top
 318                 // - The widget is not above the top of the viewport (do not scroll downwards)
 319                 //   (This isn't represented because >20 is, anyways and always, bigger than 0)
 320                 this.scrollToTop( this.$element, 0, { min: 20, max: Infinity } );
 321         };
 322
 323         /**
 324          * @inheritdoc
 325          */
 326         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.doInputEscape = function () {
 327                 // Parent
 328                 mw.rcfilters.ui.FilterTagMultiselectWidget.parent.prototype.doInputEscape.call( this );
 329
 330                 // Blur the input
 331                 this.input.$input.blur();
 332         };
 333
 334         /**
 335          * @inheritdoc
 336          */
 337         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.onChangeTags = function () {
 338                 // Parent method
 339                 mw.rcfilters.ui.FilterTagMultiselectWidget.parent.prototype.onChangeTags.call( this );
 340
 341                 this.emptyFilterMessage.toggle( this.isEmpty() );
 342         };
 343
 344         /**
 345          * Respond to model initialize event
 346          */
 347         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.onModelInitialize = function () {
 348                 this.setSavedQueryVisibility();
 349         };
 350
 351         /**
 352          * Respond to model update event
 353          */
 354         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.onModelUpdate = function () {
 355                 this.updateElementsForView();
 356         };
 357
 358         /**
 359          * Update the elements in the widget to the current view
 360          */
 361         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.updateElementsForView = function () {
 362                 var view = this.model.getCurrentView(),
 363                         inputValue = this.input.getValue().trim(),
 364                         inputView = this.model.getViewByTrigger( inputValue.substr( 0, 1 ) );
 365
 366                 if ( inputView !== 'default' ) {
 367                         // We have a prefix already, remove it
 368                         inputValue = inputValue.substr( 1 );
 369                 }
 370
 371                 if ( inputView !== view ) {
 372                         // Add the correct prefix
 373                         inputValue = this.model.getViewTrigger( view ) + inputValue;
 374                 }
 375
 376                 // Update input
 377                 this.input.setValue( inputValue );
 378
 379                 if ( this.currentView !== view ) {
 380                         this.scrollToTop( this.$element );
 381                         this.currentView = view;
 382                 }
 383         };
 384
 385         /**
 386          * Set the visibility of the saved query button
 387          */
 388         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.setSavedQueryVisibility = function () {
 389                 if ( mw.user.isAnon() ) {
 390                         return;
 391                 }
 392
 393                 this.matchingQuery = this.controller.findQueryMatchingCurrentState();
 394
 395                 this.savedQueryTitle.setLabel(
 396                         this.matchingQuery ? this.matchingQuery.getLabel() : ''
 397                 );
 398                 this.savedQueryTitle.toggle( !!this.matchingQuery );
 399                 this.saveQueryButton.toggle(
 400                         !this.isEmpty() &&
 401                         !this.matchingQuery
 402                 );
 403
 404                 if ( this.matchingQuery ) {
 405                         this.emphasize();
 406                 }
 407         };
 408
 409         /**
 410          * Respond to model itemUpdate event
 411          *
 412          * @param {mw.rcfilters.dm.FilterItem} item Filter item model
 413          */
 414         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.onModelItemUpdate = function ( item ) {
 415                 if ( item.getGroupModel().isHidden() ) {
 416                         return;
 417                 }
 418
 419                 if (
 420                         item.isSelected() ||
 421                         (
 422                                 this.model.isHighlightEnabled() &&
 423                                 item.isHighlightSupported() &&
 424                                 item.getHighlightColor()
 425                         )
 426                 ) {
 427                         this.addTag( item.getName(), item.getLabel() );
 428                 } else {
 429                         this.removeTagByData( item.getName() );
 430                 }
 431
 432                 this.setSavedQueryVisibility();
 433
 434                 // Re-evaluate reset state
 435                 this.reevaluateResetRestoreState();
 436         };
 437
 438         /**
 439          * @inheritdoc
 440          */
 441         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.isAllowedData = function ( data ) {
 442                 return (
 443                         this.model.getItemByName( data ) &&
 444                         !this.isDuplicateData( data )
 445                 );
 446         };
 447
 448         /**
 449          * @inheritdoc
 450          */
 451         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.onMenuChoose = function ( item ) {
 452                 this.controller.toggleFilterSelect( item.model.getName() );
 453
 454                 // Select the tag if it exists, or reset selection otherwise
 455                 this.selectTag( this.getItemFromData( item.model.getName() ) );
 456
 457                 this.focus();
 458         };
 459
 460         /**
 461          * Respond to highlightChange event
 462          *
 463          * @param {boolean} isHighlightEnabled Highlight is enabled
 464          */
 465         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.onModelHighlightChange = function ( isHighlightEnabled ) {
 466                 var highlightedItems = this.model.getHighlightedItems();
 467
 468                 if ( isHighlightEnabled ) {
 469                         // Add capsule widgets
 470                         highlightedItems.forEach( function ( filterItem ) {
 471                                 this.addTag( filterItem.getName(), filterItem.getLabel() );
 472                         }.bind( this ) );
 473                 } else {
 474                         // Remove capsule widgets if they're not selected
 475                         highlightedItems.forEach( function ( filterItem ) {
 476                                 if ( !filterItem.isSelected() ) {
 477                                         this.removeTagByData( filterItem.getName() );
 478                                 }
 479                         }.bind( this ) );
 480                 }
 481         };
 482
 483         /**
 484          * @inheritdoc
 485          */
 486         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.onTagSelect = function ( tagItem ) {
 487                 var widget = this,
 488                         menuOption = this.menu.getItemFromModel( tagItem.getModel() ),
 489                         oldInputValue = this.input.getValue().trim();
 490
 491                 this.menu.setUserSelecting( true );
 492
 493                 // Reset input
 494                 this.input.setValue( '' );
 495
 496                 // Switch view
 497                 this.controller.switchView( tagItem.getView() );
 498
 499                 // Parent method
 500                 mw.rcfilters.ui.FilterTagMultiselectWidget.parent.prototype.onTagSelect.call( this, tagItem );
 501
 502                 this.menu.selectItem( menuOption );
 503                 this.selectTag( tagItem );
 504
 505                 // Scroll to the item
 506                 if ( this.model.removeViewTriggers( oldInputValue ) ) {
 507                         // We're binding a 'once' to the itemVisibilityChange event
 508                         // so this happens when the menu is ready after the items
 509                         // are visible again, in case this is done right after the
 510                         // user filtered the results
 511                         this.getMenu().once(
 512                                 'itemVisibilityChange',
 513                                 function () {
 514                                         widget.scrollToTop( menuOption.$element );
 515                                         widget.menu.setUserSelecting( false );
 516                                 }
 517                         );
 518                 } else {
 519                         this.scrollToTop( menuOption.$element );
 520                         this.menu.setUserSelecting( false );
 521                 }
 522
 523         };
 524
 525         /**
 526          * Select a tag by reference. This is what OO.ui.SelectWidget is doing.
 527          * If no items are given, reset selection from all.
 528          *
 529          * @param {mw.rcfilters.ui.FilterTagItemWidget} [item] Tag to select,
 530          *  omit to deselect all
 531          */
 532         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.selectTag = function ( item ) {
 533                 var i, len, selected;
 534
 535                 for ( i = 0, len = this.items.length; i < len; i++ ) {
 536                         selected = this.items[ i ] === item;
 537                         if ( this.items[ i ].isSelected() !== selected ) {
 538                                 this.items[ i ].toggleSelected( selected );
 539                         }
 540                 }
 541         };
 542         /**
 543          * @inheritdoc
 544          */
 545         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.onTagRemove = function ( tagItem ) {
 546                 // Parent method
 547                 mw.rcfilters.ui.FilterTagMultiselectWidget.parent.prototype.onTagRemove.call( this, tagItem );
 548
 549                 this.controller.clearFilter( tagItem.getName() );
 550
 551                 tagItem.destroy();
 552         };
 553
 554         /**
 555          * Respond to click event on the reset button
 556          */
 557         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.onResetButtonClick = function () {
 558                 if ( this.model.areCurrentFiltersEmpty() ) {
 559                         // Reset to default filters
 560                         this.controller.resetToDefaults();
 561                 } else {
 562                         // Reset to have no filters
 563                         this.controller.emptyFilters();
 564                 }
 565         };
 566
 567         /**
 568          * Reevaluate the restore state for the widget between setting to defaults and clearing all filters
 569          */
 570         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.reevaluateResetRestoreState = function () {
 571                 var defaultsAreEmpty = this.model.areDefaultFiltersEmpty(),
 572                         currFiltersAreEmpty = this.model.areCurrentFiltersEmpty(),
 573                         hideResetButton = currFiltersAreEmpty && defaultsAreEmpty;
 574
 575                 this.resetButton.setIcon(
 576                         currFiltersAreEmpty ? 'history' : 'trash'
 577                 );
 578
 579                 this.resetButton.setLabel(
 580                         currFiltersAreEmpty ? mw.msg( 'rcfilters-restore-default-filters' ) : ''
 581                 );
 582                 this.resetButton.setTitle(
 583                         currFiltersAreEmpty ? null : mw.msg( 'rcfilters-clear-all-filters' )
 584                 );
 585
 586                 this.resetButton.toggle( !hideResetButton );
 587                 this.emptyFilterMessage.toggle( currFiltersAreEmpty );
 588         };
 589
 590         /**
 591          * @inheritdoc
 592          */
 593         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.createMenuWidget = function ( menuConfig ) {
 594                 return new mw.rcfilters.ui.MenuSelectWidget(
 595                         this.controller,
 596                         this.model,
 597                         $.extend( {
 598                                 filterFromInput: true
 599                         }, menuConfig )
 600                 );
 601         };
 602
 603         /**
 604          * @inheritdoc
 605          */
 606         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.createTagItemWidget = function ( data ) {
 607                 var filterItem = this.model.getItemByName( data );
 608
 609                 if ( filterItem ) {
 610                         return new mw.rcfilters.ui.FilterTagItemWidget(
 611                                 this.controller,
 612                                 filterItem,
 613                                 {
 614                                         $overlay: this.$overlay
 615                                 }
 616                         );
 617                 }
 618         };
 619
 620         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.emphasize = function () {
 621                 if (
 622                         !this.$handle.hasClass( 'mw-rcfilters-ui-filterTagMultiselectWidget-animate' )
 623                 ) {
 624                         this.$handle
 625                                 .addClass( 'mw-rcfilters-ui-filterTagMultiselectWidget-emphasize' )
 626                                 .addClass( 'mw-rcfilters-ui-filterTagMultiselectWidget-animate' );
 627
 628                         setTimeout( function () {
 629                                 this.$handle
 630                                         .removeClass( 'mw-rcfilters-ui-filterTagMultiselectWidget-emphasize' );
 631
 632                                 setTimeout( function () {
 633                                         this.$handle
 634                                                 .removeClass( 'mw-rcfilters-ui-filterTagMultiselectWidget-animate' );
 635                                 }.bind( this ), 1000 );
 636                         }.bind( this ), 500 );
 637
 638                 }
 639         };
 640         /**
 641          * Scroll the element to top within its container
 642          *
 643          * @private
 644          * @param {jQuery} $element Element to position
 645          * @param {number} [marginFromTop=0] When scrolling the entire widget to the top, leave this
 646          *  much space (in pixels) above the widget.
 647          * @param {Object} [threshold] Minimum distance from the top of the element to scroll at all
 648          * @param {number} [threshold.min] Minimum distance above the element
 649          * @param {number} [threshold.max] Minimum distance below the element
 650          */
 651         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.scrollToTop = function ( $element, marginFromTop, threshold ) {
 652                 var container = OO.ui.Element.static.getClosestScrollableContainer( $element[ 0 ], 'y' ),
 653                         pos = OO.ui.Element.static.getRelativePosition( $element, $( container ) ),
 654                         containerScrollTop = $( container ).scrollTop(),
 655                         effectiveScrollTop = $( container ).is( 'body, html' ) ? 0 : containerScrollTop,
 656                         newScrollTop = effectiveScrollTop + pos.top - ( marginFromTop || 0 );
 657
 658                 // Scroll to item
 659                 if (
 660                         threshold === undefined ||
 661                         (
 662                                 (
 663                                         threshold.min === undefined ||
 664                                         newScrollTop - containerScrollTop >= threshold.min
 665                                 ) &&
 666                                 (
 667                                         threshold.max === undefined ||
 668                                         newScrollTop - containerScrollTop <= threshold.max
 669                                 )
 670                         )
 671                 ) {
 672                         $( container ).animate( {
 673                                 scrollTop: newScrollTop
 674                         } );
 675                 }
 676         };
 677 }( mediaWiki ) );