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} [$overlay] A jQuery object serving as overlay for popups
  15          * @cfg {jQuery} [$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                                         $( '<div>' )
 225                                                 .addClass( 'mw-rcfilters-ui-filterTagMultiselectWidget-wrapper-title' )
 226                                                 .append(
 227                                                         title.$element,
 228                                                         this.savedQueryTitle.$element
 229                                                 ),
 230                                         $( '<div>' )
 231                                                 .addClass( 'mw-rcfilters-ui-filterTagMultiselectWidget-wrapper-hideshow' )
 232                                                 .append(
 233                                                         this.hideShowButton.$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          * Respond to view select widget choose event
 261          *
 262          * @param {OO.ui.ButtonOptionWidget} buttonOptionWidget Chosen widget
 263          */
 264         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.onViewsSelectWidgetChoose = function ( buttonOptionWidget ) {
 265                 this.controller.switchView( buttonOptionWidget.getData() );
 266                 this.viewsSelectWidget.selectItem( null );
 267                 this.focus();
 268         };
 269
 270         /**
 271          * Respond to model search change event
 272          *
 273          * @param {string} value Search value
 274          */
 275         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.onModelSearchChange = function ( value ) {
 276                 this.input.setValue( value );
 277         };
 278
 279         /**
 280          * Respond to input change event
 281          *
 282          * @param {string} value Value of the input
 283          */
 284         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.onInputChange = function ( value ) {
 285                 this.controller.setSearch( value );
 286         };
 287
 288         /**
 289          * Respond to query button click
 290          */
 291         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.onSaveQueryButtonClick = function () {
 292                 this.getMenu().toggle( false );
 293         };
 294
 295         /**
 296          * Respond to save query model initialization
 297          */
 298         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.onSavedQueriesInitialize = function () {
 299                 this.setSavedQueryVisibility();
 300         };
 301
 302         /**
 303          * Respond to save query item change. Mainly this is done to update the label in case
 304          * a query item has been edited
 305          *
 306          * @param {mw.rcfilters.dm.SavedQueryItemModel} item Saved query item
 307          */
 308         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.onSavedQueriesItemUpdate = function ( item ) {
 309                 if ( this.matchingQuery === item ) {
 310                         // This means we just edited the item that is currently matched
 311                         this.savedQueryTitle.setLabel( item.getLabel() );
 312                 }
 313         };
 314
 315         /**
 316          * Respond to menu toggle
 317          *
 318          * @param {boolean} isVisible Menu is visible
 319          */
 320         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.onMenuToggle = function ( isVisible ) {
 321                 // Parent
 322                 mw.rcfilters.ui.FilterTagMultiselectWidget.parent.prototype.onMenuToggle.call( this );
 323
 324                 if ( isVisible ) {
 325                         this.focus();
 326
 327                         mw.hook( 'RcFilters.popup.open' ).fire();
 328
 329                         if ( !this.getMenu().findSelectedItem() ) {
 330                                 // If there are no selected items, scroll menu to top
 331                                 // This has to be in a setTimeout so the menu has time
 332                                 // to be positioned and fixed
 333                                 setTimeout( function () { this.getMenu().scrollToTop(); }.bind( this ), 0 );
 334                         }
 335                 } else {
 336                         this.blur();
 337
 338                         // Clear selection
 339                         this.selectTag( null );
 340
 341                         // Clear the search
 342                         this.controller.setSearch( '' );
 343
 344                         // Log filter grouping
 345                         this.controller.trackFilterGroupings( 'filtermenu' );
 346                 }
 347
 348                 this.input.setIcon( isVisible ? 'search' : 'menu' );
 349         };
 350
 351         /**
 352          * @inheritdoc
 353          */
 354         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.onInputFocus = function () {
 355                 // Parent
 356                 mw.rcfilters.ui.FilterTagMultiselectWidget.parent.prototype.onInputFocus.call( this );
 357
 358                 // Only scroll to top of the viewport if:
 359                 // - The widget is more than 20px from the top
 360                 // - The widget is not above the top of the viewport (do not scroll downwards)
 361                 //   (This isn't represented because >20 is, anyways and always, bigger than 0)
 362                 this.scrollToTop( this.$element, 0, { min: 20, max: Infinity } );
 363         };
 364
 365         /**
 366          * @inheritdoc
 367          */
 368         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.doInputEscape = function () {
 369                 // Parent
 370                 mw.rcfilters.ui.FilterTagMultiselectWidget.parent.prototype.doInputEscape.call( this );
 371
 372                 // Blur the input
 373                 this.input.$input.blur();
 374         };
 375
 376         /**
 377          * @inheritdoc
 378          */
 379         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.onMouseDown = function ( e ) {
 380                 if ( !this.collapsed && !this.isDisabled() && e.which === OO.ui.MouseButtons.LEFT ) {
 381                         this.menu.toggle();
 382
 383                         return false;
 384                 }
 385         };
 386
 387         /**
 388          * @inheritdoc
 389          */
 390         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.onChangeTags = function () {
 391                 // Parent method
 392                 mw.rcfilters.ui.FilterTagMultiselectWidget.parent.prototype.onChangeTags.call( this );
 393
 394                 this.emptyFilterMessage.toggle( this.isEmpty() );
 395         };
 396
 397         /**
 398          * Respond to model initialize event
 399          */
 400         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.onModelInitialize = function () {
 401                 this.setSavedQueryVisibility();
 402         };
 403
 404         /**
 405          * Respond to model update event
 406          */
 407         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.onModelUpdate = function () {
 408                 this.updateElementsForView();
 409         };
 410
 411         /**
 412          * Update the elements in the widget to the current view
 413          */
 414         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.updateElementsForView = function () {
 415                 var view = this.model.getCurrentView(),
 416                         inputValue = this.input.getValue().trim(),
 417                         inputView = this.model.getViewByTrigger( inputValue.substr( 0, 1 ) );
 418
 419                 if ( inputView !== 'default' ) {
 420                         // We have a prefix already, remove it
 421                         inputValue = inputValue.substr( 1 );
 422                 }
 423
 424                 if ( inputView !== view ) {
 425                         // Add the correct prefix
 426                         inputValue = this.model.getViewTrigger( view ) + inputValue;
 427                 }
 428
 429                 // Update input
 430                 this.input.setValue( inputValue );
 431
 432                 if ( this.currentView !== view ) {
 433                         this.scrollToTop( this.$element );
 434                         this.currentView = view;
 435                 }
 436         };
 437
 438         /**
 439          * Set the visibility of the saved query button
 440          */
 441         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.setSavedQueryVisibility = function () {
 442                 if ( mw.user.isAnon() ) {
 443                         return;
 444                 }
 445
 446                 this.matchingQuery = this.controller.findQueryMatchingCurrentState();
 447
 448                 this.savedQueryTitle.setLabel(
 449                         this.matchingQuery ? this.matchingQuery.getLabel() : ''
 450                 );
 451                 this.savedQueryTitle.toggle( !!this.matchingQuery );
 452                 this.saveQueryButton.setDisabled( !!this.matchingQuery );
 453                 this.saveQueryButton.setTitle( !this.matchingQuery ?
 454                         mw.msg( 'rcfilters-savedqueries-add-new-title' ) :
 455                         mw.msg( 'rcfilters-savedqueries-already-saved' ) );
 456
 457                 if ( this.matchingQuery ) {
 458                         this.emphasize();
 459                 }
 460         };
 461
 462         /**
 463          * Respond to model itemUpdate event
 464          * fixme: when a new state is applied to the model this function is called 60+ times in a row
 465          *
 466          * @param {mw.rcfilters.dm.FilterItem} item Filter item model
 467          */
 468         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.onModelItemUpdate = function ( item ) {
 469                 if ( !item.getGroupModel().isHidden() ) {
 470                         if (
 471                                 item.isSelected() ||
 472                                 (
 473                                         this.model.isHighlightEnabled() &&
 474                                         item.getHighlightColor()
 475                                 )
 476                         ) {
 477                                 this.addTag( item.getName(), item.getLabel() );
 478                         } else {
 479                                 this.removeTagByData( item.getName() );
 480                         }
 481                 }
 482
 483                 this.setSavedQueryVisibility();
 484
 485                 // Re-evaluate reset state
 486                 this.reevaluateResetRestoreState();
 487         };
 488
 489         /**
 490          * @inheritdoc
 491          */
 492         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.isAllowedData = function ( data ) {
 493                 return (
 494                         this.model.getItemByName( data ) &&
 495                         !this.isDuplicateData( data )
 496                 );
 497         };
 498
 499         /**
 500          * @inheritdoc
 501          */
 502         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.onMenuChoose = function ( item ) {
 503                 this.controller.toggleFilterSelect( item.model.getName() );
 504
 505                 // Select the tag if it exists, or reset selection otherwise
 506                 this.selectTag( this.findItemFromData( item.model.getName() ) );
 507
 508                 this.focus();
 509         };
 510
 511         /**
 512          * Respond to highlightChange event
 513          *
 514          * @param {boolean} isHighlightEnabled Highlight is enabled
 515          */
 516         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.onModelHighlightChange = function ( isHighlightEnabled ) {
 517                 var highlightedItems = this.model.getHighlightedItems();
 518
 519                 if ( isHighlightEnabled ) {
 520                         // Add capsule widgets
 521                         highlightedItems.forEach( function ( filterItem ) {
 522                                 this.addTag( filterItem.getName(), filterItem.getLabel() );
 523                         }.bind( this ) );
 524                 } else {
 525                         // Remove capsule widgets if they're not selected
 526                         highlightedItems.forEach( function ( filterItem ) {
 527                                 if ( !filterItem.isSelected() ) {
 528                                         this.removeTagByData( filterItem.getName() );
 529                                 }
 530                         }.bind( this ) );
 531                 }
 532
 533                 this.setSavedQueryVisibility();
 534         };
 535
 536         /**
 537          * @inheritdoc
 538          */
 539         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.onTagSelect = function ( tagItem ) {
 540                 var menuOption = this.menu.getItemFromModel( tagItem.getModel() );
 541
 542                 this.menu.setUserSelecting( true );
 543                 // Parent method
 544                 mw.rcfilters.ui.FilterTagMultiselectWidget.parent.prototype.onTagSelect.call( this, tagItem );
 545
 546                 // Switch view
 547                 this.controller.resetSearchForView( tagItem.getView() );
 548
 549                 this.selectTag( tagItem );
 550                 this.scrollToTop( menuOption.$element );
 551
 552                 this.menu.setUserSelecting( false );
 553         };
 554
 555         /**
 556          * Select a tag by reference. This is what OO.ui.SelectWidget is doing.
 557          * If no items are given, reset selection from all.
 558          *
 559          * @param {mw.rcfilters.ui.FilterTagItemWidget} [item] Tag to select,
 560          *  omit to deselect all
 561          */
 562         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.selectTag = function ( item ) {
 563                 var i, len, selected;
 564
 565                 for ( i = 0, len = this.items.length; i < len; i++ ) {
 566                         selected = this.items[ i ] === item;
 567                         if ( this.items[ i ].isSelected() !== selected ) {
 568                                 this.items[ i ].toggleSelected( selected );
 569                         }
 570                 }
 571         };
 572         /**
 573          * @inheritdoc
 574          */
 575         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.onTagRemove = function ( tagItem ) {
 576                 // Parent method
 577                 mw.rcfilters.ui.FilterTagMultiselectWidget.parent.prototype.onTagRemove.call( this, tagItem );
 578
 579                 this.controller.clearFilter( tagItem.getName() );
 580
 581                 tagItem.destroy();
 582         };
 583
 584         /**
 585          * Respond to click event on the reset button
 586          */
 587         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.onResetButtonClick = function () {
 588                 if ( this.model.areVisibleFiltersEmpty() ) {
 589                         // Reset to default filters
 590                         this.controller.resetToDefaults();
 591                 } else {
 592                         // Reset to have no filters
 593                         this.controller.emptyFilters();
 594                 }
 595         };
 596
 597         /**
 598          * Respond to hide/show button click
 599          */
 600         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.onHideShowButtonClick = function () {
 601                 this.toggleCollapsed();
 602         };
 603
 604         /**
 605          * Toggle the collapsed state of the filters widget
 606          *
 607          * @param {boolean} isCollapsed Widget is collapsed
 608          */
 609         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.toggleCollapsed = function ( isCollapsed ) {
 610                 isCollapsed = isCollapsed === undefined ? !this.collapsed : !!isCollapsed;
 611
 612                 this.collapsed = isCollapsed;
 613
 614                 if ( isCollapsed ) {
 615                         // If we are collapsing, close the menu, in case it was open
 616                         // We should make sure the menu closes before the rest of the elements
 617                         // are hidden, otherwise there is an unknown error in jQuery as ooui
 618                         // sets and unsets properties on the input (which is hidden at that point)
 619                         this.menu.toggle( false );
 620                 }
 621                 this.input.setDisabled( isCollapsed );
 622                 this.hideShowButton.setLabel( mw.msg(
 623                         isCollapsed ? 'rcfilters-activefilters-show' : 'rcfilters-activefilters-hide'
 624                 ) );
 625                 this.hideShowButton.setTitle( mw.msg(
 626                         isCollapsed ? 'rcfilters-activefilters-show-tooltip' : 'rcfilters-activefilters-hide-tooltip'
 627                 ) );
 628
 629                 // Toggle the wrapper class, so we have min height values correctly throughout
 630                 this.$wrapper.toggleClass( 'mw-rcfilters-collapsed', isCollapsed );
 631
 632                 // Save the state
 633                 this.controller.updateCollapsedState( isCollapsed );
 634         };
 635
 636         /**
 637          * Reevaluate the restore state for the widget between setting to defaults and clearing all filters
 638          */
 639         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.reevaluateResetRestoreState = function () {
 640                 var defaultsAreEmpty = this.controller.areDefaultsEmpty(),
 641                         currFiltersAreEmpty = this.model.areVisibleFiltersEmpty(),
 642                         hideResetButton = currFiltersAreEmpty && defaultsAreEmpty;
 643
 644                 this.resetButton.setIcon(
 645                         currFiltersAreEmpty ? 'history' : 'trash'
 646                 );
 647
 648                 this.resetButton.setLabel(
 649                         currFiltersAreEmpty ? mw.msg( 'rcfilters-restore-default-filters' ) : ''
 650                 );
 651                 this.resetButton.setTitle(
 652                         currFiltersAreEmpty ? null : mw.msg( 'rcfilters-clear-all-filters' )
 653                 );
 654
 655                 this.resetButton.toggle( !hideResetButton );
 656                 this.emptyFilterMessage.toggle( currFiltersAreEmpty );
 657         };
 658
 659         /**
 660          * @inheritdoc
 661          */
 662         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.createMenuWidget = function ( menuConfig ) {
 663                 return new mw.rcfilters.ui.MenuSelectWidget(
 664                         this.controller,
 665                         this.model,
 666                         menuConfig
 667                 );
 668         };
 669
 670         /**
 671          * @inheritdoc
 672          */
 673         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.createTagItemWidget = function ( data ) {
 674                 var filterItem = this.model.getItemByName( data );
 675
 676                 if ( filterItem ) {
 677                         return new mw.rcfilters.ui.FilterTagItemWidget(
 678                                 this.controller,
 679                                 this.model,
 680                                 this.model.getInvertModel(),
 681                                 filterItem,
 682                                 {
 683                                         $overlay: this.$overlay
 684                                 }
 685                         );
 686                 }
 687         };
 688
 689         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.emphasize = function () {
 690                 if (
 691                         !this.$handle.hasClass( 'mw-rcfilters-ui-filterTagMultiselectWidget-animate' )
 692                 ) {
 693                         this.$handle
 694                                 .addClass( 'mw-rcfilters-ui-filterTagMultiselectWidget-emphasize' )
 695                                 .addClass( 'mw-rcfilters-ui-filterTagMultiselectWidget-animate' );
 696
 697                         setTimeout( function () {
 698                                 this.$handle
 699                                         .removeClass( 'mw-rcfilters-ui-filterTagMultiselectWidget-emphasize' );
 700
 701                                 setTimeout( function () {
 702                                         this.$handle
 703                                                 .removeClass( 'mw-rcfilters-ui-filterTagMultiselectWidget-animate' );
 704                                 }.bind( this ), 1000 );
 705                         }.bind( this ), 500 );
 706
 707                 }
 708         };
 709         /**
 710          * Scroll the element to top within its container
 711          *
 712          * @private
 713          * @param {jQuery} $element Element to position
 714          * @param {number} [marginFromTop=0] When scrolling the entire widget to the top, leave this
 715          *  much space (in pixels) above the widget.
 716          * @param {Object} [threshold] Minimum distance from the top of the element to scroll at all
 717          * @param {number} [threshold.min] Minimum distance above the element
 718          * @param {number} [threshold.max] Minimum distance below the element
 719          */
 720         mw.rcfilters.ui.FilterTagMultiselectWidget.prototype.scrollToTop = function ( $element, marginFromTop, threshold ) {
 721                 var container = OO.ui.Element.static.getClosestScrollableContainer( $element[ 0 ], 'y' ),
 722                         pos = OO.ui.Element.static.getRelativePosition( $element, $( container ) ),
 723                         containerScrollTop = $( container ).scrollTop(),
 724                         effectiveScrollTop = $( container ).is( 'body, html' ) ? 0 : containerScrollTop,
 725                         newScrollTop = effectiveScrollTop + pos.top - ( marginFromTop || 0 );
 726
 727                 // Scroll to item
 728                 if (
 729                         threshold === undefined ||
 730                         (
 731                                 (
 732                                         threshold.min === undefined ||
 733                                         newScrollTop - containerScrollTop >= threshold.min
 734                                 ) &&
 735                                 (
 736                                         threshold.max === undefined ||
 737                                         newScrollTop - containerScrollTop <= threshold.max
 738                                 )
 739                         )
 740                 ) {
 741                         $( container ).animate( {
 742                                 scrollTop: newScrollTop
 743                         } );
 744                 }
 745         };
 746 }( mediaWiki ) );