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                 this.saveQueryButton = new mw.rcfilters.ui.SaveFiltersPopupButtonWidget(
  89                         this.controller,
  90                         this.queriesModel
  91                 );
  92
  93                 this.saveQueryButton.$element.on( 'mousedown', function ( e ) { e.stopPropagation(); } );
  94
  95                 this.saveQueryButton.connect( this, {
  96                         click: 'onSaveQueryButtonClick',
  97                         saveCurrent: 'setSavedQueryVisibility'
  98                 } );
  99
 100                 this.emptyFilterMessage = new OO.ui.LabelWidget( {
 101                         label: mw.msg( 'rcfilters-empty-filter' ),
 102                         classes: [ 'mw-rcfilters-ui-filterTagMultiselectWidget-emptyFilters' ]
 103                 } );
 104                 this.$content.append( this.emptyFilterMessage.$element );
 105
 106                 // Events
 107                 this.resetButton.connect( this, { click: 'onResetButtonClick' } );
 108                 // Stop propagation for mousedown, so that the widget doesn't
 109                 // trigger the focus on the input and scrolls up when we click the reset button
 110                 this.resetButton.$element.on( 'mousedown', function ( e ) { e.stopPropagation(); } );
 111                 this.model.connect( this, {
 112                         initialize: 'onModelInitialize',
 113                         update: 'onModelUpdate',
 114                         itemUpdate: 'onModelItemUpdate',
 115                         highlightChange: 'onModelHighlightChange'
 116                 } );
 117                 this.input.connect( this, { change: 'onInputChange' } );
 118                 this.queriesModel.connect( this, { itemUpdate: 'onSavedQueriesItemUpdate' } );
 119
 120                 // The filter list and button should appear side by side regardless of how
 121                 // wide the button is; the button also changes its width depending
 122                 // on language and its state, so the safest way to present both side
 123                 // by side is with a table layout
 124                 rcFiltersRow = $( '<div>' )
 125                         .addClass( 'mw-rcfilters-ui-row' )
 126                         .append(
 127                                 this.$content
 128                                         .addClass( 'mw-rcfilters-ui-cell' )
 129                                         .addClass( 'mw-rcfilters-ui-filterTagMultiselectWidget-cell-filters' )
 130                         );
 131
 132                 rcFiltersRow.append(
 133                         $( '<div>' )
 134                                 .addClass( 'mw-rcfilters-ui-cell' )
 135                                 .addClass( 'mw-rcfilters-ui-filterTagMultiselectWidget-cell-save' )
 136                                 .append( this.saveQueryButton.$element )
 137                 );
 138
 139                 // Add a selector at the right of the input
 140                 this.viewsSelectWidget = new OO.ui.ButtonSelectWidget( {
 141                         classes: [ 'mw-rcfilters-ui-filterTagMultiselectWidget-views-select-widget' ],
 142                         items: [
 143                                 new OO.ui.ButtonOptionWidget( {
 144                                         framed: false,
 145                                         data: 'namespaces',
 146                                         icon: 'article',
 147                                         title: mw.msg( 'rcfilters-view-namespaces-tooltip' )
 148                                 } ),
 149                                 new OO.ui.ButtonOptionWidget( {
 150                                         framed: false,
 151                                         data: 'tags',
 152                                         icon: 'tag',
 153                                         title: mw.msg( 'rcfilters-view-tags-tooltip' )
 154                                 } )
 155                         ]
 156                 } );
 157
 158                 // Rearrange the UI so the select widget is at the right of the input
 159                 this.$element.append(
 160                         $( '<div>' )
 161                                 .addClass( 'mw-rcfilters-ui-table' )
 162                                 .append(
 163                                         $( '<div>' )
 164                                                 .addClass( 'mw-rcfilters-ui-row' )
 165                                                 .append(
 166                                                         $( '<div>' )
 167                                                                 .addClass( 'mw-rcfilters-ui-cell' )
 168                                                                 .addClass( 'mw-rcfilters-ui-filterTagMultiselectWidget-views-input' )
 169                                                                 .append( this.input.$element ),
 170                                                         $( '<div>' )
 171                                                                 .addClass( 'mw-rcfilters-ui-cell' )
 172                                                                 .addClass( 'mw-rcfilters-ui-filterTagMultiselectWidget-views-select' )
 173                                                                 .append( this.viewsSelectWidget.$element )
 174                                                 )
 175                                 )
 176                 );
 177
 178                 // Event
 179                 this.viewsSelectWidget.connect( this, { choose: 'onViewsSelectWidgetChoose' } );
 180
 181                 rcFiltersRow.append(
 182                         $( '<div>' )
 183                                 .addClass( 'mw-rcfilters-ui-cell' )
 184                                 .addClass( 'mw-rcfilters-ui-filterTagMultiselectWidget-cell-reset' )
 185                                 .append( this.resetButton.$element )
 186                 );
 187
 188                 // Build the content
 189                 $contentWrapper.append(
 190                         title.$element,
 191                         this.savedQueryTitle.$element,
 192                         $( '<div>' )
 193                                 .addClass( 'mw-rcfilters-ui-table' )
 194                                 .append(
 195                                         rcFiltersRow
 196                                 )
 197                 );
 198
 199                 // Initialize
 200                 this.$handle.append( $contentWrapper );
 201                 this.emptyFilterMessage.toggle( this.isEmpty() );
 202                 this.savedQueryTitle.toggle( false );
 203
 204                 this.$element
 205                         .addClass( 'mw-rcfilters-ui-filterTagMultiselectWidget' );
 206
 207                 this.reevaluateResetRestoreState();
 208         };
 209
 210         /* Initialization */
 211
 212         OO.inheritClass( mw.rcfilters.ui.FilterTagMultiselectWidget, OO.ui.MenuTagMultiselectWidget );
 213
 214         /* Methods */
 215
 216         /**
 217          * Respond to view select widget choose event
 218          *
 219          * @param {OO.ui.ButtonOptionWidget} buttonOptionWidget Chosen widget
 220          */
 221         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.onViewsSelectWidgetChoose = function ( buttonOptionWidget ) {
 222                 this.controller.switchView( buttonOptionWidget.getData() );
 223                 this.viewsSelectWidget.selectItem( null );
 224                 this.focus();
 225         };
 226
 227         /**
 228          * Respond to input change event
 229          *
 230          * @param {string} value Value of the input
 231          */
 232         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.onInputChange = function ( value ) {
 233                 var view;
 234
 235                 value = value.trim();
 236
 237                 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().trim() === 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          * @inheritdoc
 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().trim(),
 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                 if ( this.currentView !== view ) {
 366                         this.scrollToTop( this.$element );
 367                         this.currentView = view;
 368                 }
 369         };
 370
 371         /**
 372          * Set the visibility of the saved query button
 373          */
 374         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.setSavedQueryVisibility = function () {
 375                 this.matchingQuery = this.controller.findQueryMatchingCurrentState();
 376
 377                 this.savedQueryTitle.setLabel(
 378                         this.matchingQuery ? this.matchingQuery.getLabel() : ''
 379                 );
 380                 this.savedQueryTitle.toggle( !!this.matchingQuery );
 381                 this.saveQueryButton.toggle(
 382                         !this.isEmpty() &&
 383                         !this.matchingQuery
 384                 );
 385
 386                 if ( this.matchingQuery ) {
 387                         this.emphasize();
 388                 }
 389         };
 390
 391         /**
 392          * Respond to model itemUpdate event
 393          *
 394          * @param {mw.rcfilters.dm.FilterItem} item Filter item model
 395          */
 396         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.onModelItemUpdate = function ( item ) {
 397                 if ( item.getGroupModel().isHidden() ) {
 398                         return;
 399                 }
 400
 401                 if (
 402                         item.isSelected() ||
 403                         (
 404                                 this.model.isHighlightEnabled() &&
 405                                 item.isHighlightSupported() &&
 406                                 item.getHighlightColor()
 407                         )
 408                 ) {
 409                         this.addTag( item.getName(), item.getLabel() );
 410                 } else {
 411                         this.removeTagByData( item.getName() );
 412                 }
 413
 414                 this.setSavedQueryVisibility();
 415
 416                 // Re-evaluate reset state
 417                 this.reevaluateResetRestoreState();
 418         };
 419
 420         /**
 421          * @inheritdoc
 422          */
 423         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.isAllowedData = function ( data ) {
 424                 return (
 425                         this.model.getItemByName( data ) &&
 426                         !this.isDuplicateData( data )
 427                 );
 428         };
 429
 430         /**
 431          * @inheritdoc
 432          */
 433         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.onMenuChoose = function ( item ) {
 434                 this.controller.toggleFilterSelect( item.model.getName() );
 435
 436                 // Select the tag if it exists, or reset selection otherwise
 437                 this.selectTag( this.getItemFromData( item.model.getName() ) );
 438
 439                 this.focus();
 440         };
 441
 442         /**
 443          * Respond to highlightChange event
 444          *
 445          * @param {boolean} isHighlightEnabled Highlight is enabled
 446          */
 447         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.onModelHighlightChange = function ( isHighlightEnabled ) {
 448                 var highlightedItems = this.model.getHighlightedItems();
 449
 450                 if ( isHighlightEnabled ) {
 451                         // Add capsule widgets
 452                         highlightedItems.forEach( function ( filterItem ) {
 453                                 this.addTag( filterItem.getName(), filterItem.getLabel() );
 454                         }.bind( this ) );
 455                 } else {
 456                         // Remove capsule widgets if they're not selected
 457                         highlightedItems.forEach( function ( filterItem ) {
 458                                 if ( !filterItem.isSelected() ) {
 459                                         this.removeTagByData( filterItem.getName() );
 460                                 }
 461                         }.bind( this ) );
 462                 }
 463         };
 464
 465         /**
 466          * @inheritdoc
 467          */
 468         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.onTagSelect = function ( tagItem ) {
 469                 var widget = this,
 470                         menuOption = this.menu.getItemFromModel( tagItem.getModel() ),
 471                         oldInputValue = this.input.getValue().trim();
 472
 473                 this.menu.setUserSelecting( true );
 474
 475                 // Reset input
 476                 this.input.setValue( '' );
 477
 478                 // Switch view
 479                 this.controller.switchView( tagItem.getView() );
 480
 481                 // Parent method
 482                 mw.rcfilters.ui.FilterTagMultiselectWidget.parent.prototype.onTagSelect.call( this, tagItem );
 483
 484                 this.menu.selectItem( menuOption );
 485                 this.selectTag( tagItem );
 486
 487                 // Scroll to the item
 488                 if ( this.model.removeViewTriggers( oldInputValue ) ) {
 489                         // We're binding a 'once' to the itemVisibilityChange event
 490                         // so this happens when the menu is ready after the items
 491                         // are visible again, in case this is done right after the
 492                         // user filtered the results
 493                         this.getMenu().once(
 494                                 'itemVisibilityChange',
 495                                 function () {
 496                                         widget.scrollToTop( menuOption.$element );
 497                                         widget.menu.setUserSelecting( false );
 498                                 }
 499                         );
 500                 } else {
 501                         this.scrollToTop( menuOption.$element );
 502                         this.menu.setUserSelecting( false );
 503                 }
 504
 505         };
 506
 507         /**
 508          * Select a tag by reference. This is what OO.ui.SelectWidget is doing.
 509          * If no items are given, reset selection from all.
 510          *
 511          * @param {mw.rcfilters.ui.FilterTagItemWidget} [item] Tag to select,
 512          *  omit to deselect all
 513          */
 514         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.selectTag = function ( item ) {
 515                 var i, len, selected;
 516
 517                 for ( i = 0, len = this.items.length; i < len; i++ ) {
 518                         selected = this.items[ i ] === item;
 519                         if ( this.items[ i ].isSelected() !== selected ) {
 520                                 this.items[ i ].toggleSelected( selected );
 521                         }
 522                 }
 523         };
 524         /**
 525          * @inheritdoc
 526          */
 527         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.onTagRemove = function ( tagItem ) {
 528                 // Parent method
 529                 mw.rcfilters.ui.FilterTagMultiselectWidget.parent.prototype.onTagRemove.call( this, tagItem );
 530
 531                 this.controller.clearFilter( tagItem.getName() );
 532
 533                 tagItem.destroy();
 534         };
 535
 536         /**
 537          * Respond to click event on the reset button
 538          */
 539         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.onResetButtonClick = function () {
 540                 if ( this.model.areCurrentFiltersEmpty() ) {
 541                         // Reset to default filters
 542                         this.controller.resetToDefaults();
 543                 } else {
 544                         // Reset to have no filters
 545                         this.controller.emptyFilters();
 546                 }
 547         };
 548
 549         /**
 550          * Reevaluate the restore state for the widget between setting to defaults and clearing all filters
 551          */
 552         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.reevaluateResetRestoreState = function () {
 553                 var defaultsAreEmpty = this.model.areDefaultFiltersEmpty(),
 554                         currFiltersAreEmpty = this.model.areCurrentFiltersEmpty(),
 555                         hideResetButton = currFiltersAreEmpty && defaultsAreEmpty;
 556
 557                 this.resetButton.setIcon(
 558                         currFiltersAreEmpty ? 'history' : 'trash'
 559                 );
 560
 561                 this.resetButton.setLabel(
 562                         currFiltersAreEmpty ? mw.msg( 'rcfilters-restore-default-filters' ) : ''
 563                 );
 564                 this.resetButton.setTitle(
 565                         currFiltersAreEmpty ? null : mw.msg( 'rcfilters-clear-all-filters' )
 566                 );
 567
 568                 this.resetButton.toggle( !hideResetButton );
 569                 this.emptyFilterMessage.toggle( currFiltersAreEmpty );
 570         };
 571
 572         /**
 573          * @inheritdoc
 574          */
 575         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.createMenuWidget = function ( menuConfig ) {
 576                 return new mw.rcfilters.ui.MenuSelectWidget(
 577                         this.controller,
 578                         this.model,
 579                         $.extend( {
 580                                 filterFromInput: true
 581                         }, menuConfig )
 582                 );
 583         };
 584
 585         /**
 586          * @inheritdoc
 587          */
 588         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.createTagItemWidget = function ( data ) {
 589                 var filterItem = this.model.getItemByName( data );
 590
 591                 if ( filterItem ) {
 592                         return new mw.rcfilters.ui.FilterTagItemWidget(
 593                                 this.controller,
 594                                 filterItem,
 595                                 {
 596                                         $overlay: this.$overlay
 597                                 }
 598                         );
 599                 }
 600         };
 601
 602         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.emphasize = function () {
 603                 if (
 604                         !this.$handle.hasClass( 'mw-rcfilters-ui-filterTagMultiselectWidget-animate' )
 605                 ) {
 606                         this.$handle
 607                                 .addClass( 'mw-rcfilters-ui-filterTagMultiselectWidget-emphasize' )
 608                                 .addClass( 'mw-rcfilters-ui-filterTagMultiselectWidget-animate' );
 609
 610                         setTimeout( function () {
 611                                 this.$handle
 612                                         .removeClass( 'mw-rcfilters-ui-filterTagMultiselectWidget-emphasize' );
 613
 614                                 setTimeout( function () {
 615                                         this.$handle
 616                                                 .removeClass( 'mw-rcfilters-ui-filterTagMultiselectWidget-animate' );
 617                                 }.bind( this ), 1000 );
 618                         }.bind( this ), 500 );
 619
 620                 }
 621         };
 622         /**
 623          * Scroll the element to top within its container
 624          *
 625          * @private
 626          * @param {jQuery} $element Element to position
 627          * @param {number} [marginFromTop] When scrolling the entire widget to the top, leave this
 628          *  much space (in pixels) above the widget.
 629          */
 630         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.scrollToTop = function ( $element, marginFromTop ) {
 631                 var container = OO.ui.Element.static.getClosestScrollableContainer( $element[ 0 ], 'y' ),
 632                         pos = OO.ui.Element.static.getRelativePosition( $element, $( container ) ),
 633                         containerScrollTop = $( container ).is( 'body, html' ) ? 0 : $( container ).scrollTop();
 634
 635                 // Scroll to item
 636                 $( container ).animate( {
 637                         scrollTop: containerScrollTop + pos.top - ( marginFromTop || 0 )
 638                 } );
 639         };
 640 }( mediaWiki ) );