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

   1 ( function () {
   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} [$overlay] A jQuery object serving as overlay for popups
  15          * @cfg {jQuery} [$wrapper] A jQuery object for the wrapper of the general
  16          *  system. If not given, falls back to this widget's $element
  17          * @cfg {boolean} [collapsed] Filter area is collapsed
  18          */
  19         mw.rcfilters.ui.FilterTagMultiselectWidget = function MwRcfiltersUiFilterTagMultiselectWidget( controller, model, savedQueriesModel, config ) {
  20                 var rcFiltersRow,
  21                         title = new OO.ui.LabelWidget( {
  22                                 label: mw.msg( 'rcfilters-activefilters' ),
  23                                 classes: [ 'mw-rcfilters-ui-filterTagMultiselectWidget-wrapper-content-title' ]
  24                         } ),
  25                         $contentWrapper = $( '<div>' )
  26                                 .addClass( 'mw-rcfilters-ui-filterTagMultiselectWidget-wrapper' );
  27
  28                 config = config || {};
  29
  30                 this.controller = controller;
  31                 this.model = model;
  32                 this.queriesModel = savedQueriesModel;
  33                 this.$overlay = config.$overlay || this.$element;
  34                 this.$wrapper = config.$wrapper || this.$element;
  35                 this.matchingQuery = null;
  36                 this.currentView = this.model.getCurrentView();
  37                 this.collapsed = false;
  38
  39                 // Parent
  40                 mw.rcfilters.ui.FilterTagMultiselectWidget.parent.call( this, $.extend( true, {
  41                         label: mw.msg( 'rcfilters-filterlist-title' ),
  42                         placeholder: mw.msg( 'rcfilters-empty-filter' ),
  43                         inputPosition: 'outline',
  44                         allowArbitrary: false,
  45                         allowDisplayInvalidTags: false,
  46                         allowReordering: false,
  47                         $overlay: this.$overlay,
  48                         menu: {
  49                                 // Our filtering is done through the model
  50                                 filterFromInput: false,
  51                                 hideWhenOutOfView: false,
  52                                 hideOnChoose: false,
  53                                 width: 650,
  54                                 footers: [
  55                                         {
  56                                                 name: 'viewSelect',
  57                                                 sticky: false,
  58                                                 // View select menu, appears on default view only
  59                                                 $element: $( '<div>' )
  60                                                         .append( new mw.rcfilters.ui.ViewSwitchWidget( this.controller, this.model ).$element ),
  61                                                 views: [ 'default' ]
  62                                         },
  63                                         {
  64                                                 name: 'feedback',
  65                                                 // Feedback footer, appears on all views
  66                                                 $element: $( '<div>' )
  67                                                         .append(
  68                                                                 new OO.ui.ButtonWidget( {
  69                                                                         framed: false,
  70                                                                         icon: 'feedback',
  71                                                                         flags: [ 'progressive' ],
  72                                                                         label: mw.msg( 'rcfilters-filterlist-feedbacklink' ),
  73                                                                         href: 'https://www.mediawiki.org/wiki/Help_talk:New_filters_for_edit_review'
  74                                                                 } ).$element
  75                                                         )
  76                                         }
  77                                 ]
  78                         },
  79                         input: {
  80                                 icon: 'menu',
  81                                 placeholder: mw.msg( 'rcfilters-search-placeholder' )
  82                         }
  83                 }, config ) );
  84
  85                 this.savedQueryTitle = new OO.ui.LabelWidget( {
  86                         label: '',
  87                         classes: [ 'mw-rcfilters-ui-filterTagMultiselectWidget-wrapper-content-savedQueryTitle' ]
  88                 } );
  89
  90                 this.resetButton = new OO.ui.ButtonWidget( {
  91                         framed: false,
  92                         classes: [ 'mw-rcfilters-ui-filterTagMultiselectWidget-resetButton' ]
  93                 } );
  94
  95                 this.hideShowButton = new OO.ui.ButtonWidget( {
  96                         framed: false,
  97                         flags: [ 'progressive' ],
  98                         classes: [ 'mw-rcfilters-ui-filterTagMultiselectWidget-hideshowButton' ]
  99                 } );
 100                 this.toggleCollapsed( !!config.collapsed );
 101
 102                 if ( !mw.user.isAnon() ) {
 103                         this.saveQueryButton = new mw.rcfilters.ui.SaveFiltersPopupButtonWidget(
 104                                 this.controller,
 105                                 this.queriesModel,
 106                                 {
 107                                         $overlay: this.$overlay
 108                                 }
 109                         );
 110
 111                         this.saveQueryButton.$element.on( 'mousedown', function ( e ) { e.stopPropagation(); } );
 112
 113                         this.saveQueryButton.connect( this, {
 114                                 click: 'onSaveQueryButtonClick',
 115                                 saveCurrent: 'setSavedQueryVisibility'
 116                         } );
 117                         this.queriesModel.connect( this, {
 118                                 itemUpdate: 'onSavedQueriesItemUpdate',
 119                                 initialize: 'onSavedQueriesInitialize',
 120                                 'default': 'reevaluateResetRestoreState'
 121                         } );
 122                 }
 123
 124                 this.emptyFilterMessage = new OO.ui.LabelWidget( {
 125                         label: mw.msg( 'rcfilters-empty-filter' ),
 126                         classes: [ 'mw-rcfilters-ui-filterTagMultiselectWidget-emptyFilters' ]
 127                 } );
 128                 this.$content.append( this.emptyFilterMessage.$element );
 129
 130                 // Events
 131                 this.resetButton.connect( this, { click: 'onResetButtonClick' } );
 132                 this.hideShowButton.connect( this, { click: 'onHideShowButtonClick' } );
 133                 // Stop propagation for mousedown, so that the widget doesn't
 134                 // trigger the focus on the input and scrolls up when we click the reset button
 135                 this.resetButton.$element.on( 'mousedown', function ( e ) { e.stopPropagation(); } );
 136                 this.hideShowButton.$element.on( 'mousedown', function ( e ) { e.stopPropagation(); } );
 137                 this.model.connect( this, {
 138                         initialize: 'onModelInitialize',
 139                         update: 'onModelUpdate',
 140                         searchChange: 'onModelSearchChange',
 141                         itemUpdate: 'onModelItemUpdate',
 142                         highlightChange: 'onModelHighlightChange'
 143                 } );
 144                 this.input.connect( this, { change: 'onInputChange' } );
 145
 146                 // The filter list and button should appear side by side regardless of how
 147                 // wide the button is; the button also changes its width depending
 148                 // on language and its state, so the safest way to present both side
 149                 // by side is with a table layout
 150                 rcFiltersRow = $( '<div>' )
 151                         .addClass( 'mw-rcfilters-ui-row' )
 152                         .append(
 153                                 this.$content
 154                                         .addClass( 'mw-rcfilters-ui-cell' )
 155                                         .addClass( 'mw-rcfilters-ui-filterTagMultiselectWidget-cell-filters' )
 156                         );
 157
 158                 if ( !mw.user.isAnon() ) {
 159                         rcFiltersRow.append(
 160                                 $( '<div>' )
 161                                         .addClass( 'mw-rcfilters-ui-cell' )
 162                                         .addClass( 'mw-rcfilters-ui-filterTagMultiselectWidget-cell-save' )
 163                                         .append( this.saveQueryButton.$element )
 164                         );
 165                 }
 166
 167                 // Add a selector at the right of the input
 168                 this.viewsSelectWidget = new OO.ui.ButtonSelectWidget( {
 169                         classes: [ 'mw-rcfilters-ui-filterTagMultiselectWidget-views-select-widget' ],
 170                         items: [
 171                                 new OO.ui.ButtonOptionWidget( {
 172                                         framed: false,
 173                                         data: 'namespaces',
 174                                         icon: 'article',
 175                                         label: mw.msg( 'namespaces' ),
 176                                         title: mw.msg( 'rcfilters-view-namespaces-tooltip' )
 177                                 } ),
 178                                 new OO.ui.ButtonOptionWidget( {
 179                                         framed: false,
 180                                         data: 'tags',
 181                                         icon: 'tag',
 182                                         label: mw.msg( 'tags-title' ),
 183                                         title: mw.msg( 'rcfilters-view-tags-tooltip' )
 184                                 } )
 185                         ]
 186                 } );
 187
 188                 // Rearrange the UI so the select widget is at the right of the input
 189                 this.$element.append(
 190                         $( '<div>' )
 191                                 .addClass( 'mw-rcfilters-ui-table' )
 192                                 .append(
 193                                         $( '<div>' )
 194                                                 .addClass( 'mw-rcfilters-ui-row' )
 195                                                 .addClass( 'mw-rcfilters-ui-filterTagMultiselectWidget-views' )
 196                                                 .append(
 197                                                         $( '<div>' )
 198                                                                 .addClass( 'mw-rcfilters-ui-cell' )
 199                                                                 .addClass( 'mw-rcfilters-ui-filterTagMultiselectWidget-views-input' )
 200                                                                 .append( this.input.$element ),
 201                                                         $( '<div>' )
 202                                                                 .addClass( 'mw-rcfilters-ui-cell' )
 203                                                                 .addClass( 'mw-rcfilters-ui-filterTagMultiselectWidget-views-select' )
 204                                                                 .append( this.viewsSelectWidget.$element )
 205                                                 )
 206                                 )
 207                 );
 208
 209                 // Event
 210                 this.viewsSelectWidget.connect( this, { choose: 'onViewsSelectWidgetChoose' } );
 211
 212                 rcFiltersRow.append(
 213                         $( '<div>' )
 214                                 .addClass( 'mw-rcfilters-ui-cell' )
 215                                 .addClass( 'mw-rcfilters-ui-filterTagMultiselectWidget-cell-reset' )
 216                                 .append( this.resetButton.$element )
 217                 );
 218
 219                 // Build the content
 220                 $contentWrapper.append(
 221                         $( '<div>' )
 222                                 .addClass( 'mw-rcfilters-ui-filterTagMultiselectWidget-wrapper-top' )
 223                                 .append(
 224                                         $( '<div>' )
 225                                                 .addClass( 'mw-rcfilters-ui-filterTagMultiselectWidget-wrapper-top-title' )
 226                                                 .append( title.$element ),
 227                                         $( '<div>' )
 228                                                 .addClass( 'mw-rcfilters-ui-filterTagMultiselectWidget-wrapper-top-queryName' )
 229                                                 .append( this.savedQueryTitle.$element ),
 230                                         $( '<div>' )
 231                                                 .addClass( 'mw-rcfilters-ui-filterTagMultiselectWidget-wrapper-top-hideshow' )
 232                                                 .append(
 233                                                         this.hideShowButton.$element
 234                                                 )
 235                                 ),
 236                         $( '<div>' )
 237                                 .addClass( 'mw-rcfilters-ui-table' )
 238                                 .addClass( 'mw-rcfilters-ui-filterTagMultiselectWidget-wrapper-filters' )
 239                                 .append( rcFiltersRow )
 240                 );
 241
 242                 // Initialize
 243                 this.$handle.append( $contentWrapper );
 244                 this.emptyFilterMessage.toggle( this.isEmpty() );
 245                 this.savedQueryTitle.toggle( false );
 246
 247                 this.$element
 248                         .addClass( 'mw-rcfilters-ui-filterTagMultiselectWidget' );
 249
 250                 this.reevaluateResetRestoreState();
 251         };
 252
 253         /* Initialization */
 254
 255         OO.inheritClass( mw.rcfilters.ui.FilterTagMultiselectWidget, OO.ui.MenuTagMultiselectWidget );
 256
 257         /* Methods */
 258
 259         /**
 260          * Override parent method to avoid unnecessary resize events.
 261          */
 262         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.updateIfHeightChanged = function () { };
 263
 264         /**
 265          * Respond to view select widget choose event
 266          *
 267          * @param {OO.ui.ButtonOptionWidget} buttonOptionWidget Chosen widget
 268          */
 269         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.onViewsSelectWidgetChoose = function ( buttonOptionWidget ) {
 270                 this.controller.switchView( buttonOptionWidget.getData() );
 271                 this.viewsSelectWidget.selectItem( null );
 272                 this.focus();
 273         };
 274
 275         /**
 276          * Respond to model search change event
 277          *
 278          * @param {string} value Search value
 279          */
 280         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.onModelSearchChange = function ( value ) {
 281                 this.input.setValue( value );
 282         };
 283
 284         /**
 285          * Respond to input change event
 286          *
 287          * @param {string} value Value of the input
 288          */
 289         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.onInputChange = function ( value ) {
 290                 this.controller.setSearch( value );
 291         };
 292
 293         /**
 294          * Respond to query button click
 295          */
 296         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.onSaveQueryButtonClick = function () {
 297                 this.getMenu().toggle( false );
 298         };
 299
 300         /**
 301          * Respond to save query model initialization
 302          */
 303         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.onSavedQueriesInitialize = function () {
 304                 this.setSavedQueryVisibility();
 305         };
 306
 307         /**
 308          * Respond to save query item change. Mainly this is done to update the label in case
 309          * a query item has been edited
 310          *
 311          * @param {mw.rcfilters.dm.SavedQueryItemModel} item Saved query item
 312          */
 313         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.onSavedQueriesItemUpdate = function ( item ) {
 314                 if ( this.matchingQuery === item ) {
 315                         // This means we just edited the item that is currently matched
 316                         this.savedQueryTitle.setLabel( item.getLabel() );
 317                 }
 318         };
 319
 320         /**
 321          * Respond to menu toggle
 322          *
 323          * @param {boolean} isVisible Menu is visible
 324          */
 325         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.onMenuToggle = function ( isVisible ) {
 326                 // Parent
 327                 mw.rcfilters.ui.FilterTagMultiselectWidget.parent.prototype.onMenuToggle.call( this );
 328
 329                 if ( isVisible ) {
 330                         this.focus();
 331
 332                         mw.hook( 'RcFilters.popup.open' ).fire();
 333
 334                         if ( !this.getMenu().findSelectedItem() ) {
 335                                 // If there are no selected items, scroll menu to top
 336                                 // This has to be in a setTimeout so the menu has time
 337                                 // to be positioned and fixed
 338                                 setTimeout( function () { this.getMenu().scrollToTop(); }.bind( this ), 0 );
 339                         }
 340                 } else {
 341                         this.blur();
 342
 343                         // Clear selection
 344                         this.selectTag( null );
 345
 346                         // Clear the search
 347                         this.controller.setSearch( '' );
 348
 349                         // Log filter grouping
 350                         this.controller.trackFilterGroupings( 'filtermenu' );
 351                 }
 352
 353                 this.input.setIcon( isVisible ? 'search' : 'menu' );
 354         };
 355
 356         /**
 357          * @inheritdoc
 358          */
 359         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.onInputFocus = function () {
 360                 // Parent
 361                 mw.rcfilters.ui.FilterTagMultiselectWidget.parent.prototype.onInputFocus.call( this );
 362
 363                 // Only scroll to top of the viewport if:
 364                 // - The widget is more than 20px from the top
 365                 // - The widget is not above the top of the viewport (do not scroll downwards)
 366                 //   (This isn't represented because >20 is, anyways and always, bigger than 0)
 367                 this.scrollToTop( this.$element, 0, { min: 20, max: Infinity } );
 368         };
 369
 370         /**
 371          * @inheritdoc
 372          */
 373         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.doInputEscape = function () {
 374                 // Parent
 375                 mw.rcfilters.ui.FilterTagMultiselectWidget.parent.prototype.doInputEscape.call( this );
 376
 377                 // Blur the input
 378                 this.input.$input.blur();
 379         };
 380
 381         /**
 382          * @inheritdoc
 383          */
 384         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.onMouseDown = function ( e ) {
 385                 if ( !this.collapsed && !this.isDisabled() && e.which === OO.ui.MouseButtons.LEFT ) {
 386                         this.menu.toggle();
 387
 388                         return false;
 389                 }
 390         };
 391
 392         /**
 393          * @inheritdoc
 394          */
 395         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.onChangeTags = function () {
 396                 // If initialized, call parent method.
 397                 if ( this.controller.isInitialized() ) {
 398                         mw.rcfilters.ui.FilterTagMultiselectWidget.parent.prototype.onChangeTags.call( this );
 399                 }
 400
 401                 this.emptyFilterMessage.toggle( this.isEmpty() );
 402         };
 403
 404         /**
 405          * Respond to model initialize event
 406          */
 407         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.onModelInitialize = function () {
 408                 this.setSavedQueryVisibility();
 409         };
 410
 411         /**
 412          * Respond to model update event
 413          */
 414         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.onModelUpdate = function () {
 415                 this.updateElementsForView();
 416         };
 417
 418         /**
 419          * Update the elements in the widget to the current view
 420          */
 421         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.updateElementsForView = function () {
 422                 var view = this.model.getCurrentView(),
 423                         inputValue = this.input.getValue().trim(),
 424                         inputView = this.model.getViewByTrigger( inputValue.substr( 0, 1 ) );
 425
 426                 if ( inputView !== 'default' ) {
 427                         // We have a prefix already, remove it
 428                         inputValue = inputValue.substr( 1 );
 429                 }
 430
 431                 if ( inputView !== view ) {
 432                         // Add the correct prefix
 433                         inputValue = this.model.getViewTrigger( view ) + inputValue;
 434                 }
 435
 436                 // Update input
 437                 this.input.setValue( inputValue );
 438
 439                 if ( this.currentView !== view ) {
 440                         this.scrollToTop( this.$element );
 441                         this.currentView = view;
 442                 }
 443         };
 444
 445         /**
 446          * Set the visibility of the saved query button
 447          */
 448         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.setSavedQueryVisibility = function () {
 449                 if ( mw.user.isAnon() ) {
 450                         return;
 451                 }
 452
 453                 this.matchingQuery = this.controller.findQueryMatchingCurrentState();
 454
 455                 this.savedQueryTitle.setLabel(
 456                         this.matchingQuery ? this.matchingQuery.getLabel() : ''
 457                 );
 458                 this.savedQueryTitle.toggle( !!this.matchingQuery );
 459                 this.saveQueryButton.setDisabled( !!this.matchingQuery );
 460                 this.saveQueryButton.setTitle( !this.matchingQuery ?
 461                         mw.msg( 'rcfilters-savedqueries-add-new-title' ) :
 462                         mw.msg( 'rcfilters-savedqueries-already-saved' ) );
 463
 464                 if ( this.matchingQuery ) {
 465                         this.emphasize();
 466                 }
 467         };
 468
 469         /**
 470          * Respond to model itemUpdate event
 471          * fixme: when a new state is applied to the model this function is called 60+ times in a row
 472          *
 473          * @param {mw.rcfilters.dm.FilterItem} item Filter item model
 474          */
 475         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.onModelItemUpdate = function ( item ) {
 476                 if ( !item.getGroupModel().isHidden() ) {
 477                         if (
 478                                 item.isSelected() ||
 479                                 (
 480                                         this.model.isHighlightEnabled() &&
 481                                         item.getHighlightColor()
 482                                 )
 483                         ) {
 484                                 this.addTag( item.getName(), item.getLabel() );
 485                         } else {
 486                                 // Only attempt to remove the tag if we can find an item for it (T198140, T198231)
 487                                 if ( this.findItemFromData( item.getName() ) !== null ) {
 488                                         this.removeTagByData( item.getName() );
 489                                 }
 490                         }
 491                 }
 492
 493                 this.setSavedQueryVisibility();
 494
 495                 // Re-evaluate reset state
 496                 this.reevaluateResetRestoreState();
 497         };
 498
 499         /**
 500          * @inheritdoc
 501          */
 502         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.isAllowedData = function ( data ) {
 503                 return (
 504                         this.model.getItemByName( data ) &&
 505                         !this.isDuplicateData( data )
 506                 );
 507         };
 508
 509         /**
 510          * @inheritdoc
 511          */
 512         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.onMenuChoose = function ( item ) {
 513                 this.controller.toggleFilterSelect( item.model.getName() );
 514
 515                 // Select the tag if it exists, or reset selection otherwise
 516                 this.selectTag( this.findItemFromData( item.model.getName() ) );
 517
 518                 this.focus();
 519         };
 520
 521         /**
 522          * Respond to highlightChange event
 523          *
 524          * @param {boolean} isHighlightEnabled Highlight is enabled
 525          */
 526         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.onModelHighlightChange = function ( isHighlightEnabled ) {
 527                 var highlightedItems = this.model.getHighlightedItems();
 528
 529                 if ( isHighlightEnabled ) {
 530                         // Add capsule widgets
 531                         highlightedItems.forEach( function ( filterItem ) {
 532                                 this.addTag( filterItem.getName(), filterItem.getLabel() );
 533                         }.bind( this ) );
 534                 } else {
 535                         // Remove capsule widgets if they're not selected
 536                         highlightedItems.forEach( function ( filterItem ) {
 537                                 if ( !filterItem.isSelected() ) {
 538                                         // Only attempt to remove the tag if we can find an item for it (T198140, T198231)
 539                                         if ( this.findItemFromData( filterItem.getName() ) !== null ) {
 540                                                 this.removeTagByData( filterItem.getName() );
 541                                         }
 542                                 }
 543                         }.bind( this ) );
 544                 }
 545
 546                 this.setSavedQueryVisibility();
 547         };
 548
 549         /**
 550          * @inheritdoc
 551          */
 552         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.onTagSelect = function ( tagItem ) {
 553                 var menuOption = this.menu.getItemFromModel( tagItem.getModel() );
 554
 555                 this.menu.setUserSelecting( true );
 556                 // Parent method
 557                 mw.rcfilters.ui.FilterTagMultiselectWidget.parent.prototype.onTagSelect.call( this, tagItem );
 558
 559                 // Switch view
 560                 this.controller.resetSearchForView( tagItem.getView() );
 561
 562                 this.selectTag( tagItem );
 563                 this.scrollToTop( menuOption.$element );
 564
 565                 this.menu.setUserSelecting( false );
 566         };
 567
 568         /**
 569          * Select a tag by reference. This is what OO.ui.SelectWidget is doing.
 570          * If no items are given, reset selection from all.
 571          *
 572          * @param {mw.rcfilters.ui.FilterTagItemWidget} [item] Tag to select,
 573          *  omit to deselect all
 574          */
 575         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.selectTag = function ( item ) {
 576                 var i, len, selected;
 577
 578                 for ( i = 0, len = this.items.length; i < len; i++ ) {
 579                         selected = this.items[ i ] === item;
 580                         if ( this.items[ i ].isSelected() !== selected ) {
 581                                 this.items[ i ].toggleSelected( selected );
 582                         }
 583                 }
 584         };
 585         /**
 586          * @inheritdoc
 587          */
 588         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.onTagRemove = function ( tagItem ) {
 589                 // Parent method
 590                 mw.rcfilters.ui.FilterTagMultiselectWidget.parent.prototype.onTagRemove.call( this, tagItem );
 591
 592                 this.controller.clearFilter( tagItem.getName() );
 593
 594                 tagItem.destroy();
 595         };
 596
 597         /**
 598          * Respond to click event on the reset button
 599          */
 600         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.onResetButtonClick = function () {
 601                 if ( this.model.areVisibleFiltersEmpty() ) {
 602                         // Reset to default filters
 603                         this.controller.resetToDefaults();
 604                 } else {
 605                         // Reset to have no filters
 606                         this.controller.emptyFilters();
 607                 }
 608         };
 609
 610         /**
 611          * Respond to hide/show button click
 612          */
 613         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.onHideShowButtonClick = function () {
 614                 this.toggleCollapsed();
 615         };
 616
 617         /**
 618          * Toggle the collapsed state of the filters widget
 619          *
 620          * @param {boolean} isCollapsed Widget is collapsed
 621          */
 622         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.toggleCollapsed = function ( isCollapsed ) {
 623                 isCollapsed = isCollapsed === undefined ? !this.collapsed : !!isCollapsed;
 624
 625                 this.collapsed = isCollapsed;
 626
 627                 if ( isCollapsed ) {
 628                         // If we are collapsing, close the menu, in case it was open
 629                         // We should make sure the menu closes before the rest of the elements
 630                         // are hidden, otherwise there is an unknown error in jQuery as ooui
 631                         // sets and unsets properties on the input (which is hidden at that point)
 632                         this.menu.toggle( false );
 633                 }
 634                 this.input.setDisabled( isCollapsed );
 635                 this.hideShowButton.setLabel( mw.msg(
 636                         isCollapsed ? 'rcfilters-activefilters-show' : 'rcfilters-activefilters-hide'
 637                 ) );
 638                 this.hideShowButton.setTitle( mw.msg(
 639                         isCollapsed ? 'rcfilters-activefilters-show-tooltip' : 'rcfilters-activefilters-hide-tooltip'
 640                 ) );
 641
 642                 // Toggle the wrapper class, so we have min height values correctly throughout
 643                 this.$wrapper.toggleClass( 'mw-rcfilters-collapsed', isCollapsed );
 644
 645                 // Save the state
 646                 this.controller.updateCollapsedState( isCollapsed );
 647         };
 648
 649         /**
 650          * Reevaluate the restore state for the widget between setting to defaults and clearing all filters
 651          */
 652         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.reevaluateResetRestoreState = function () {
 653                 var defaultsAreEmpty = this.controller.areDefaultsEmpty(),
 654                         currFiltersAreEmpty = this.model.areVisibleFiltersEmpty(),
 655                         hideResetButton = currFiltersAreEmpty && defaultsAreEmpty;
 656
 657                 this.resetButton.setIcon(
 658                         currFiltersAreEmpty ? 'history' : 'trash'
 659                 );
 660
 661                 this.resetButton.setLabel(
 662                         currFiltersAreEmpty ? mw.msg( 'rcfilters-restore-default-filters' ) : ''
 663                 );
 664                 this.resetButton.setTitle(
 665                         currFiltersAreEmpty ? null : mw.msg( 'rcfilters-clear-all-filters' )
 666                 );
 667
 668                 this.resetButton.toggle( !hideResetButton );
 669                 this.emptyFilterMessage.toggle( currFiltersAreEmpty );
 670         };
 671
 672         /**
 673          * @inheritdoc
 674          */
 675         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.createMenuWidget = function ( menuConfig ) {
 676                 return new mw.rcfilters.ui.MenuSelectWidget(
 677                         this.controller,
 678                         this.model,
 679                         menuConfig
 680                 );
 681         };
 682
 683         /**
 684          * @inheritdoc
 685          */
 686         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.createTagItemWidget = function ( data ) {
 687                 var filterItem = this.model.getItemByName( data );
 688
 689                 if ( filterItem ) {
 690                         return new mw.rcfilters.ui.FilterTagItemWidget(
 691                                 this.controller,
 692                                 this.model,
 693                                 this.model.getInvertModel(),
 694                                 filterItem,
 695                                 {
 696                                         $overlay: this.$overlay
 697                                 }
 698                         );
 699                 }
 700         };
 701
 702         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.emphasize = function () {
 703                 if (
 704                         !this.$handle.hasClass( 'mw-rcfilters-ui-filterTagMultiselectWidget-animate' )
 705                 ) {
 706                         this.$handle
 707                                 .addClass( 'mw-rcfilters-ui-filterTagMultiselectWidget-emphasize' )
 708                                 .addClass( 'mw-rcfilters-ui-filterTagMultiselectWidget-animate' );
 709
 710                         setTimeout( function () {
 711                                 this.$handle
 712                                         .removeClass( 'mw-rcfilters-ui-filterTagMultiselectWidget-emphasize' );
 713
 714                                 setTimeout( function () {
 715                                         this.$handle
 716                                                 .removeClass( 'mw-rcfilters-ui-filterTagMultiselectWidget-animate' );
 717                                 }.bind( this ), 1000 );
 718                         }.bind( this ), 500 );
 719
 720                 }
 721         };
 722         /**
 723          * Scroll the element to top within its container
 724          *
 725          * @private
 726          * @param {jQuery} $element Element to position
 727          * @param {number} [marginFromTop=0] When scrolling the entire widget to the top, leave this
 728          *  much space (in pixels) above the widget.
 729          * @param {Object} [threshold] Minimum distance from the top of the element to scroll at all
 730          * @param {number} [threshold.min] Minimum distance above the element
 731          * @param {number} [threshold.max] Minimum distance below the element
 732          */
 733         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.scrollToTop = function ( $element, marginFromTop, threshold ) {
 734                 var container = OO.ui.Element.static.getClosestScrollableContainer( $element[ 0 ], 'y' ),
 735                         pos = OO.ui.Element.static.getRelativePosition( $element, $( container ) ),
 736                         containerScrollTop = $( container ).scrollTop(),
 737                         effectiveScrollTop = $( container ).is( 'body, html' ) ? 0 : containerScrollTop,
 738                         newScrollTop = effectiveScrollTop + pos.top - ( marginFromTop || 0 );
 739
 740                 // Scroll to item
 741                 if (
 742                         threshold === undefined ||
 743                         (
 744                                 (
 745                                         threshold.min === undefined ||
 746                                         newScrollTop - containerScrollTop >= threshold.min
 747                                 ) &&
 748                                 (
 749                                         threshold.max === undefined ||
 750                                         newScrollTop - containerScrollTop <= threshold.max
 751                                 )
 752                         )
 753                 ) {
 754                         $( container ).animate( {
 755                                 scrollTop: newScrollTop
 756                         } );
 757                 }
 758         };
 759 }() );