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

   1 ( function ( mw ) {
   2         /**
   3          * A floating menu widget for the filter list
   4          *
   5          * @extends OO.ui.MenuSelectWidget
   6          *
   7          * @constructor
   8          * @param {mw.rcfilters.Controller} controller Controller
   9          * @param {mw.rcfilters.dm.FiltersViewModel} model View model
  10          * @param {Object} [config] Configuration object
  11          * @cfg {jQuery} [$overlay] A jQuery object serving as overlay for popups
  12          * @cfg {Object[]} [footers] An array of objects defining the footers for
  13          *  this menu, with a definition whether they appear per specific views.
  14          *  The expected structure is:
  15          *  [
  16          *     {
  17          *        name: {string} A unique name for the footer object
  18          *        $element: {jQuery} A jQuery object for the content of the footer
  19          *        views: {string[]} Optional. An array stating which views this footer is
  20          *               active on. Use null or omit to display this on all views.
  21          *     }
  22          *  ]
  23          */
  24         mw.rcfilters.ui.MenuSelectWidget = function MwRcfiltersUiMenuSelectWidget( controller, model, config ) {
  25                 var header;
  26
  27                 config = config || {};
  28
  29                 this.controller = controller;
  30                 this.model = model;
  31                 this.currentView = '';
  32                 this.views = {};
  33                 this.userSelecting = false;
  34
  35                 this.inputValue = '';
  36                 this.$overlay = config.$overlay || this.$element;
  37                 this.$body = $( '<div>' )
  38                                 .addClass( 'mw-rcfilters-ui-menuSelectWidget-body' );
  39                 this.footers = [];
  40
  41                 // Parent
  42                 mw.rcfilters.ui.MenuSelectWidget.parent.call( this, $.extend( {
  43                         $autoCloseIgnore: this.$overlay,
  44                         width: 650
  45                 }, config ) );
  46                 this.setGroupElement(
  47                         $( '<div>' )
  48                                 .addClass( 'mw-rcfilters-ui-menuSelectWidget-group' )
  49                 );
  50                 this.setClippableElement( this.$body );
  51                 this.setClippableContainer( this.$element );
  52
  53                 header = new mw.rcfilters.ui.FilterMenuHeaderWidget(
  54                         this.controller,
  55                         this.model,
  56                         {
  57                                 $overlay: this.$overlay
  58                         }
  59                 );
  60
  61                 this.noResults = new OO.ui.LabelWidget( {
  62                         label: mw.msg( 'rcfilters-filterlist-noresults' ),
  63                         classes: [ 'mw-rcfilters-ui-menuSelectWidget-noresults' ]
  64                 } );
  65
  66                 // Events
  67                 this.model.connect( this, {
  68                         update: 'onModelUpdate',
  69                         initialize: 'onModelInitialize'
  70                 } );
  71
  72                 // Initialization
  73                 this.$element
  74                         .addClass( 'mw-rcfilters-ui-menuSelectWidget' )
  75                         .append( header.$element )
  76                         .append(
  77                                 this.$body
  78                                         .append( this.$group, this.noResults.$element )
  79                         );
  80
  81                 // Append all footers; we will control their visibility
  82                 // based on view
  83                 config.footers = config.footers || [];
  84                 config.footers.forEach( function ( footerData ) {
  85                         var adjustedData = {
  86                                 // Wrap the element with our own footer wrapper
  87                                 $element: $( '<div>' )
  88                                         .addClass( 'mw-rcfilters-ui-menuSelectWidget-footer' )
  89                                         .addClass( 'mw-rcfilters-ui-menuSelectWidget-footer-' + footerData.name )
  90                                         .append( footerData.$element ),
  91                                 views: footerData.views
  92                         };
  93
  94                         this.footers.push( adjustedData );
  95                         this.$element.append( adjustedData.$element );
  96                 }.bind( this ) );
  97
  98                 // Switch to the correct view
  99                 this.switchView( this.model.getCurrentView() );
 100         };
 101
 102         /* Initialize */
 103
 104         OO.inheritClass( mw.rcfilters.ui.MenuSelectWidget, OO.ui.MenuSelectWidget );
 105
 106         /* Events */
 107
 108         /**
 109          * @event itemVisibilityChange
 110          *
 111          * Item visibility has changed
 112          */
 113
 114         /* Methods */
 115
 116         /**
 117          * Respond to model update event
 118          */
 119         mw.rcfilters.ui.MenuSelectWidget.prototype.onModelUpdate = function () {
 120                 // Change view
 121                 this.switchView( this.model.getCurrentView() );
 122         };
 123
 124         /**
 125          * Respond to model initialize event. Populate the menu from the model
 126          */
 127         mw.rcfilters.ui.MenuSelectWidget.prototype.onModelInitialize = function () {
 128                 var widget = this,
 129                         viewGroupCount = {},
 130                         groups = this.model.getFilterGroups();
 131
 132                 // Reset
 133                 this.clearItems();
 134
 135                 // Count groups per view
 136                 $.each( groups, function ( groupName, groupModel ) {
 137                         if ( !groupModel.isHidden() ) {
 138                                 viewGroupCount[ groupModel.getView() ] = viewGroupCount[ groupModel.getView() ] || 0;
 139                                 viewGroupCount[ groupModel.getView() ]++;
 140                         }
 141                 } );
 142
 143                 $.each( groups, function ( groupName, groupModel ) {
 144                         var currentItems = [],
 145                                 view = groupModel.getView();
 146
 147                         if ( !groupModel.isHidden() ) {
 148                                 if ( viewGroupCount[ view ] > 1 ) {
 149                                         // Only add a section header if there is more than
 150                                         // one group
 151                                         currentItems.push(
 152                                                 // Group section
 153                                                 new mw.rcfilters.ui.FilterMenuSectionOptionWidget(
 154                                                         widget.controller,
 155                                                         groupModel,
 156                                                         {
 157                                                                 $overlay: widget.$overlay
 158                                                         }
 159                                                 )
 160                                         );
 161                                 }
 162
 163                                 // Add items
 164                                 widget.model.getGroupFilters( groupName ).forEach( function ( filterItem ) {
 165                                         currentItems.push(
 166                                                 new mw.rcfilters.ui.FilterMenuOptionWidget(
 167                                                         widget.controller,
 168                                                         filterItem,
 169                                                         {
 170                                                                 $overlay: widget.$overlay
 171                                                         }
 172                                                 )
 173                                         );
 174                                 } );
 175
 176                                 // Cache the items per view, so we can switch between them
 177                                 // without rebuilding the widgets each time
 178                                 widget.views[ view ] = widget.views[ view ] || [];
 179                                 widget.views[ view ] = widget.views[ view ].concat( currentItems );
 180                         }
 181                 } );
 182
 183                 this.switchView( this.model.getCurrentView() );
 184         };
 185
 186         /**
 187          * Switch view
 188          *
 189          * @param {string} [viewName] View name. If not given, default is used.
 190          */
 191         mw.rcfilters.ui.MenuSelectWidget.prototype.switchView = function ( viewName ) {
 192                 viewName = viewName || 'default';
 193
 194                 if ( this.views[ viewName ] && this.currentView !== viewName ) {
 195                         this.clearItems();
 196                         this.addItems( this.views[ viewName ] );
 197                         this.updateFooterVisibility( viewName );
 198
 199                         this.$element
 200                                 .data( 'view', viewName )
 201                                 .removeClass( 'mw-rcfilters-ui-menuSelectWidget-view-' + this.currentView )
 202                                 .addClass( 'mw-rcfilters-ui-menuSelectWidget-view-' + viewName );
 203
 204                         this.currentView = viewName;
 205                         this.clip();
 206                 }
 207         };
 208
 209         /**
 210          * Go over the available footers and decide which should be visible
 211          * for this view
 212          *
 213          * @param {string} [currentView] Current view
 214          */
 215         mw.rcfilters.ui.MenuSelectWidget.prototype.updateFooterVisibility = function ( currentView ) {
 216                 currentView = currentView || this.model.getCurrentView();
 217
 218                 this.footers.forEach( function ( data ) {
 219                         data.$element.toggle(
 220                                 // This footer should only be shown if it is configured
 221                                 // for all views or for this specific view
 222                                 !data.views || data.views.length === 0 || data.views.indexOf( currentView ) > -1
 223                         );
 224                 } );
 225         };
 226
 227         /**
 228          * @fires itemVisibilityChange
 229          * @inheritdoc
 230          */
 231         mw.rcfilters.ui.MenuSelectWidget.prototype.updateItemVisibility = function () {
 232                 var i,
 233                         itemWasSelected = false,
 234                         inputVal = this.$input.val(),
 235                         items = this.getItems();
 236
 237                 // Since the method hides/shows items, we don't want to
 238                 // call it unless the input actually changed
 239                 if (
 240                         !this.userSelecting &&
 241                         this.inputValue !== inputVal
 242                 ) {
 243                         // Parent method
 244                         mw.rcfilters.ui.MenuSelectWidget.parent.prototype.updateItemVisibility.call( this );
 245
 246                         // Select the first item in the list
 247                         for ( i = 0; i < items.length; i++ ) {
 248                                 if (
 249                                         !( items[ i ] instanceof OO.ui.MenuSectionOptionWidget ) &&
 250                                         items[ i ].isVisible()
 251                                 ) {
 252                                         itemWasSelected = true;
 253                                         this.selectItem( items[ i ] );
 254                                         break;
 255                                 }
 256                         }
 257
 258                         if ( !itemWasSelected ) {
 259                                 this.selectItem( null );
 260                         }
 261
 262                         // Cache value
 263                         this.inputValue = inputVal;
 264
 265                         this.emit( 'itemVisibilityChange' );
 266                 }
 267         };
 268
 269         /**
 270          * Get the option widget that matches the model given
 271          *
 272          * @param {mw.rcfilters.dm.ItemModel} model Item model
 273          * @return {mw.rcfilters.ui.ItemMenuOptionWidget} Option widget
 274          */
 275         mw.rcfilters.ui.MenuSelectWidget.prototype.getItemFromModel = function ( model ) {
 276                 return this.views[ model.getGroupModel().getView() ].filter( function ( item ) {
 277                         return item.getName() === model.getName();
 278                 } )[ 0 ];
 279         };
 280
 281         /**
 282          * Override the item matcher to use the model's match process
 283          *
 284          * @inheritdoc
 285          */
 286         mw.rcfilters.ui.MenuSelectWidget.prototype.getItemMatcher = function ( s ) {
 287                 var results = this.model.findMatches( s, true );
 288
 289                 return function ( item ) {
 290                         return results.indexOf( item.getModel() ) > -1;
 291                 };
 292         };
 293
 294         /**
 295          * @inheritdoc
 296          */
 297         mw.rcfilters.ui.MenuSelectWidget.prototype.onKeyDown = function ( e ) {
 298                 var nextItem,
 299                         currentItem = this.getHighlightedItem() || this.getSelectedItem();
 300
 301                 // Call parent
 302                 mw.rcfilters.ui.MenuSelectWidget.parent.prototype.onKeyDown.call( this, e );
 303
 304                 // We want to select the item on arrow movement
 305                 // rather than just highlight it, like the menu
 306                 // does by default
 307                 if ( !this.isDisabled() && this.isVisible() ) {
 308                         switch ( e.keyCode ) {
 309                                 case OO.ui.Keys.UP:
 310                                 case OO.ui.Keys.LEFT:
 311                                         // Get the next item
 312                                         nextItem = this.getRelativeSelectableItem( currentItem, -1 );
 313                                         break;
 314                                 case OO.ui.Keys.DOWN:
 315                                 case OO.ui.Keys.RIGHT:
 316                                         // Get the next item
 317                                         nextItem = this.getRelativeSelectableItem( currentItem, 1 );
 318                                         break;
 319                         }
 320
 321                         nextItem = nextItem && nextItem.constructor.static.selectable ?
 322                                 nextItem : null;
 323
 324                         // Select the next item
 325                         this.selectItem( nextItem );
 326                 }
 327         };
 328
 329         /**
 330          * Scroll to the top of the menu
 331          */
 332         mw.rcfilters.ui.MenuSelectWidget.prototype.scrollToTop = function () {
 333                 this.$body.scrollTop( 0 );
 334         };
 335
 336         /**
 337          * Set whether the user is currently selecting an item.
 338          * This is important when the user selects an item that is in between
 339          * different views, and makes sure we do not re-select a different
 340          * item (like the item on top) when this is happening.
 341          *
 342          * @param {boolean} isSelecting User is selecting
 343          */
 344         mw.rcfilters.ui.MenuSelectWidget.prototype.setUserSelecting = function ( isSelecting ) {
 345                 this.userSelecting = !!isSelecting;
 346         };
 347 }( mediaWiki ) );