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[autoinstallsdev/mediawiki.git] / resources / src / mediawiki.rcfilters / mw.rcfilters.Controller.js
diff --git a/resources/src/mediawiki.rcfilters/mw.rcfilters.Controller.js b/resources/src/mediawiki.rcfilters/mw.rcfilters.Controller.js
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+( function ( mw, $ ) {
+       /* eslint no-underscore-dangle: "off" */
+       /**
+        * Controller for the filters in Recent Changes
+        * @class
+        *
+        * @constructor
+        * @param {mw.rcfilters.dm.FiltersViewModel} filtersModel Filters view model
+        * @param {mw.rcfilters.dm.ChangesListViewModel} changesListModel Changes list view model
+        * @param {mw.rcfilters.dm.SavedQueriesModel} savedQueriesModel Saved queries model
+        * @param {Object} config Additional configuration
+        * @cfg {string} savedQueriesPreferenceName Where to save the saved queries
+        */
+       mw.rcfilters.Controller = function MwRcfiltersController( filtersModel, changesListModel, savedQueriesModel, config ) {
+               this.filtersModel = filtersModel;
+               this.changesListModel = changesListModel;
+               this.savedQueriesModel = savedQueriesModel;
+               this.savedQueriesPreferenceName = config.savedQueriesPreferenceName;
+
+               this.requestCounter = {};
+               this.baseFilterState = {};
+               this.uriProcessor = null;
+               this.initializing = false;
+
+               this.prevLoggedItems = [];
+
+               this.FILTER_CHANGE = 'filterChange';
+               this.SHOW_NEW_CHANGES = 'showNewChanges';
+               this.LIVE_UPDATE = 'liveUpdate';
+       };
+
+       /* Initialization */
+       OO.initClass( mw.rcfilters.Controller );
+
+       /**
+        * Initialize the filter and parameter states
+        *
+        * @param {Array} filterStructure Filter definition and structure for the model
+        * @param {Object} [namespaceStructure] Namespace definition
+        * @param {Object} [tagList] Tag definition
+        */
+       mw.rcfilters.Controller.prototype.initialize = function ( filterStructure, namespaceStructure, tagList ) {
+               var parsedSavedQueries,
+                       displayConfig = mw.config.get( 'StructuredChangeFiltersDisplayConfig' ),
+                       controller = this,
+                       views = {},
+                       items = [],
+                       uri = new mw.Uri(),
+                       $changesList = $( '.mw-changeslist' ).first().contents();
+
+               // Prepare views
+               if ( namespaceStructure ) {
+                       items = [];
+                       $.each( namespaceStructure, function ( namespaceID, label ) {
+                               // Build and clean up the individual namespace items definition
+                               items.push( {
+                                       name: namespaceID,
+                                       label: label || mw.msg( 'blanknamespace' ),
+                                       description: '',
+                                       identifiers: [
+                                               ( namespaceID < 0 || namespaceID % 2 === 0 ) ?
+                                                       'subject' : 'talk'
+                                       ],
+                                       cssClass: 'mw-changeslist-ns-' + namespaceID
+                               } );
+                       } );
+
+                       views.namespaces = {
+                               title: mw.msg( 'namespaces' ),
+                               trigger: ':',
+                               groups: [ {
+                                       // Group definition (single group)
+                                       name: 'namespace', // parameter name is singular
+                                       type: 'string_options',
+                                       title: mw.msg( 'namespaces' ),
+                                       labelPrefixKey: { 'default': 'rcfilters-tag-prefix-namespace', inverted: 'rcfilters-tag-prefix-namespace-inverted' },
+                                       separator: ';',
+                                       fullCoverage: true,
+                                       filters: items
+                               } ]
+                       };
+               }
+               if ( tagList ) {
+                       views.tags = {
+                               title: mw.msg( 'rcfilters-view-tags' ),
+                               trigger: '#',
+                               groups: [ {
+                                       // Group definition (single group)
+                                       name: 'tagfilter', // Parameter name
+                                       type: 'string_options',
+                                       title: 'rcfilters-view-tags', // Message key
+                                       labelPrefixKey: 'rcfilters-tag-prefix-tags',
+                                       separator: '|',
+                                       fullCoverage: false,
+                                       filters: tagList
+                               } ]
+                       };
+               }
+
+               // Add parameter range operations
+               views.range = {
+                       groups: [
+                               {
+                                       name: 'limit',
+                                       type: 'single_option',
+                                       title: '', // Because it's a hidden group, this title actually appears nowhere
+                                       hidden: true,
+                                       allowArbitrary: true,
+                                       validate: $.isNumeric,
+                                       range: {
+                                               min: 0, // The server normalizes negative numbers to 0 results
+                                               max: 1000
+                                       },
+                                       sortFunc: function ( a, b ) { return Number( a.name ) - Number( b.name ); },
+                                       'default': displayConfig.limitDefault,
+                                       // Temporarily making this not sticky until we resolve the problem
+                                       // with the misleading preference. Note that if this is to be permanent
+                                       // we should remove all sticky behavior methods completely
+                                       // See T172156
+                                       // isSticky: true,
+                                       excludedFromSavedQueries: true,
+                                       filters: displayConfig.limitArray.map( function ( num ) {
+                                               return controller._createFilterDataFromNumber( num, num );
+                                       } )
+                               },
+                               {
+                                       name: 'days',
+                                       type: 'single_option',
+                                       title: '', // Because it's a hidden group, this title actually appears nowhere
+                                       hidden: true,
+                                       allowArbitrary: true,
+                                       validate: $.isNumeric,
+                                       range: {
+                                               min: 0,
+                                               max: displayConfig.maxDays
+                                       },
+                                       sortFunc: function ( a, b ) { return Number( a.name ) - Number( b.name ); },
+                                       numToLabelFunc: function ( i ) {
+                                               return Number( i ) < 1 ?
+                                                       ( Number( i ) * 24 ).toFixed( 2 ) :
+                                                       Number( i );
+                                       },
+                                       'default': displayConfig.daysDefault,
+                                       // Temporarily making this not sticky while limit is not sticky, see above
+                                       // isSticky: true,
+                                       excludedFromSavedQueries: true,
+                                       filters: [
+                                               // Hours (1, 2, 6, 12)
+                                               0.04166, 0.0833, 0.25, 0.5
+                                       // Days
+                                       ].concat( displayConfig.daysArray )
+                                               .map( function ( num ) {
+                                                       return controller._createFilterDataFromNumber(
+                                                               num,
+                                                               // Convert fractions of days to number of hours for the labels
+                                                               num < 1 ? Math.round( num * 24 ) : num
+                                                       );
+                                               } )
+                               }
+                       ]
+               };
+
+               views.display = {
+                       groups: [
+                               {
+                                       name: 'display',
+                                       type: 'boolean',
+                                       title: '', // Because it's a hidden group, this title actually appears nowhere
+                                       hidden: true,
+                                       isSticky: true,
+                                       filters: [
+                                               {
+                                                       name: 'enhanced',
+                                                       'default': String( mw.user.options.get( 'usenewrc', 0 ) )
+                                               }
+                                       ]
+                               }
+                       ]
+               };
+
+               // Before we do anything, we need to see if we require additional items in the
+               // groups that have 'AllowArbitrary'. For the moment, those are only single_option
+               // groups; if we ever expand it, this might need further generalization:
+               $.each( views, function ( viewName, viewData ) {
+                       viewData.groups.forEach( function ( groupData ) {
+                               var extraValues = [];
+                               if ( groupData.allowArbitrary ) {
+                                       // If the value in the URI isn't in the group, add it
+                                       if ( uri.query[ groupData.name ] !== undefined ) {
+                                               extraValues.push( uri.query[ groupData.name ] );
+                                       }
+                                       // If the default value isn't in the group, add it
+                                       if ( groupData.default !== undefined ) {
+                                               extraValues.push( String( groupData.default ) );
+                                       }
+                                       controller.addNumberValuesToGroup( groupData, extraValues );
+                               }
+                       } );
+               } );
+
+               // Initialize the model
+               this.filtersModel.initializeFilters( filterStructure, views );
+
+               this._buildBaseFilterState();
+
+               this.uriProcessor = new mw.rcfilters.UriProcessor(
+                       this.filtersModel
+               );
+
+               if ( !mw.user.isAnon() ) {
+                       try {
+                               parsedSavedQueries = JSON.parse( mw.user.options.get( this.savedQueriesPreferenceName ) || '{}' );
+                       } catch ( err ) {
+                               parsedSavedQueries = {};
+                       }
+
+                       // The queries are saved in a minimized state, so we need
+                       // to send over the base state so the saved queries model
+                       // can normalize them per each query item
+                       this.savedQueriesModel.initialize(
+                               parsedSavedQueries,
+                               this._getBaseFilterState(),
+                               // This is for backwards compatibility - delete all excluded filter states
+                               Object.keys( this.filtersModel.getExcludedFiltersState() )
+                       );
+               }
+
+               // Check whether we need to load defaults.
+               // We do this by checking whether the current URI query
+               // contains any parameters recognized by the system.
+               // If it does, we load the given state.
+               // If it doesn't, we have no values at all, and we assume
+               // the user loads the base-page and we load defaults.
+               // Defaults should only be applied on load (if necessary)
+               // or on request
+               this.initializing = true;
+               if (
+                       !mw.user.isAnon() && this.savedQueriesModel.getDefault() &&
+                       !this.uriProcessor.doesQueryContainRecognizedParams( uri.query )
+               ) {
+                       // We have defaults from a saved query.
+                       // We will load them straight-forward (as if
+                       // they were clicked in the menu) so we trigger
+                       // a full ajax request and change of URL
+                       this.applySavedQuery( this.savedQueriesModel.getDefault() );
+               } else {
+                       // There are either recognized parameters in the URL
+                       // or there are none, but there is also no default
+                       // saved query (so defaults are from the backend)
+                       // We want to update the state but not fetch results
+                       // again
+                       this.updateStateFromUrl( false );
+
+                       // Update the changes list with the existing data
+                       // so it gets processed
+                       this.changesListModel.update(
+                               $changesList.length ? $changesList : 'NO_RESULTS',
+                               $( 'fieldset.cloptions' ).first(),
+                               true // We're using existing DOM elements
+                       );
+               }
+
+               this.initializing = false;
+               this.switchView( 'default' );
+
+               this._scheduleLiveUpdate();
+       };
+
+       /**
+        * Create filter data from a number, for the filters that are numerical value
+        *
+        * @param {Number} num Number
+        * @param {Number} numForDisplay Number for the label
+        * @return {Object} Filter data
+        */
+       mw.rcfilters.Controller.prototype._createFilterDataFromNumber = function ( num, numForDisplay ) {
+               return {
+                       name: String( num ),
+                       label: mw.language.convertNumber( numForDisplay )
+               };
+       };
+
+       /**
+        * Add an arbitrary values to groups that allow arbitrary values
+        *
+        * @param {Object} groupData Group data
+        * @param {string|string[]} arbitraryValues An array of arbitrary values to add to the group
+        */
+       mw.rcfilters.Controller.prototype.addNumberValuesToGroup = function ( groupData, arbitraryValues ) {
+               var controller = this,
+                       normalizeWithinRange = function ( range, val ) {
+                               if ( val < range.min ) {
+                                       return range.min; // Min
+                               } else if ( val >= range.max ) {
+                                       return range.max; // Max
+                               }
+                               return val;
+                       };
+
+               arbitraryValues = Array.isArray( arbitraryValues ) ? arbitraryValues : [ arbitraryValues ];
+
+               // Normalize the arbitrary values and the default value for a range
+               if ( groupData.range ) {
+                       arbitraryValues = arbitraryValues.map( function ( val ) {
+                               return normalizeWithinRange( groupData.range, val );
+                       } );
+
+                       // Normalize the default, since that's user defined
+                       if ( groupData.default !== undefined ) {
+                               groupData.default = String( normalizeWithinRange( groupData.range, groupData.default ) );
+                       }
+               }
+
+               // This is only true for single_option group
+               // We assume these are the only groups that will allow for
+               // arbitrary, since it doesn't make any sense for the other
+               // groups.
+               arbitraryValues.forEach( function ( val ) {
+                       if (
+                               // If the group allows for arbitrary data
+                               groupData.allowArbitrary &&
+                               // and it is single_option (or string_options, but we
+                               // don't have cases of those yet, nor do we plan to)
+                               groupData.type === 'single_option' &&
+                               // and, if there is a validate method and it passes on
+                               // the data
+                               ( !groupData.validate || groupData.validate( val ) ) &&
+                               // but if that value isn't already in the definition
+                               groupData.filters
+                                       .map( function ( filterData ) {
+                                               return String( filterData.name );
+                                       } )
+                                       .indexOf( String( val ) ) === -1
+                       ) {
+                               // Add the filter information
+                               groupData.filters.push( controller._createFilterDataFromNumber(
+                                       val,
+                                       groupData.numToLabelFunc ?
+                                               groupData.numToLabelFunc( val ) :
+                                               val
+                               ) );
+
+                               // If there's a sort function set up, re-sort the values
+                               if ( groupData.sortFunc ) {
+                                       groupData.filters.sort( groupData.sortFunc );
+                               }
+                       }
+               } );
+       };
+
+       /**
+        * Switch the view of the filters model
+        *
+        * @param {string} view Requested view
+        */
+       mw.rcfilters.Controller.prototype.switchView = function ( view ) {
+               this.filtersModel.switchView( view );
+       };
+
+       /**
+        * Reset to default filters
+        */
+       mw.rcfilters.Controller.prototype.resetToDefaults = function () {
+               this.uriProcessor.updateModelBasedOnQuery( this._getDefaultParams() );
+
+               this.updateChangesList();
+       };
+
+       /**
+        * Check whether the default values of the filters are all false.
+        *
+        * @return {boolean} Defaults are all false
+        */
+       mw.rcfilters.Controller.prototype.areDefaultsEmpty = function () {
+               var defaultFilters = this.filtersModel.getFiltersFromParameters( this._getDefaultParams() );
+
+               this._deleteExcludedValuesFromFilterState( defaultFilters );
+
+               // Defaults can change in a session, so we need to do this every time
+               return Object.keys( defaultFilters ).every( function ( filterName ) {
+                       return !defaultFilters[ filterName ];
+               } );
+       };
+
+       /**
+        * Empty all selected filters
+        */
+       mw.rcfilters.Controller.prototype.emptyFilters = function () {
+               var highlightedFilterNames = this.filtersModel
+                       .getHighlightedItems()
+                       .map( function ( filterItem ) { return { name: filterItem.getName() }; } );
+
+               this.filtersModel.emptyAllFilters();
+               this.filtersModel.clearAllHighlightColors();
+               // Check all filter interactions
+               this.filtersModel.reassessFilterInteractions();
+
+               this.updateChangesList();
+
+               if ( highlightedFilterNames ) {
+                       this._trackHighlight( 'clearAll', highlightedFilterNames );
+               }
+       };
+
+       /**
+        * Update the selected state of a filter
+        *
+        * @param {string} filterName Filter name
+        * @param {boolean} [isSelected] Filter selected state
+        */
+       mw.rcfilters.Controller.prototype.toggleFilterSelect = function ( filterName, isSelected ) {
+               var filterItem = this.filtersModel.getItemByName( filterName );
+
+               if ( !filterItem ) {
+                       // If no filter was found, break
+                       return;
+               }
+
+               isSelected = isSelected === undefined ? !filterItem.isSelected() : isSelected;
+
+               if ( filterItem.isSelected() !== isSelected ) {
+                       this.filtersModel.toggleFilterSelected( filterName, isSelected );
+
+                       this.updateChangesList();
+
+                       // Check filter interactions
+                       this.filtersModel.reassessFilterInteractions( filterItem );
+               }
+       };
+
+       /**
+        * Clear both highlight and selection of a filter
+        *
+        * @param {string} filterName Name of the filter item
+        */
+       mw.rcfilters.Controller.prototype.clearFilter = function ( filterName ) {
+               var filterItem = this.filtersModel.getItemByName( filterName ),
+                       isHighlighted = filterItem.isHighlighted();
+
+               if ( filterItem.isSelected() || isHighlighted ) {
+                       this.filtersModel.clearHighlightColor( filterName );
+                       this.filtersModel.toggleFilterSelected( filterName, false );
+                       this.updateChangesList();
+                       this.filtersModel.reassessFilterInteractions( filterItem );
+
+                       // Log filter grouping
+                       this.trackFilterGroupings( 'removefilter' );
+               }
+
+               if ( isHighlighted ) {
+                       this._trackHighlight( 'clear', filterName );
+               }
+       };
+
+       /**
+        * Toggle the highlight feature on and off
+        */
+       mw.rcfilters.Controller.prototype.toggleHighlight = function () {
+               this.filtersModel.toggleHighlight();
+               this._updateURL();
+
+               if ( this.filtersModel.isHighlightEnabled() ) {
+                       mw.hook( 'RcFilters.highlight.enable' ).fire();
+               }
+       };
+
+       /**
+        * Toggle the namespaces inverted feature on and off
+        */
+       mw.rcfilters.Controller.prototype.toggleInvertedNamespaces = function () {
+               this.filtersModel.toggleInvertedNamespaces();
+
+               if (
+                       this.filtersModel.getFiltersByView( 'namespaces' ).filter(
+                               function ( filterItem ) { return filterItem.isSelected(); }
+                       ).length
+               ) {
+                       // Only re-fetch results if there are namespace items that are actually selected
+                       this.updateChangesList();
+               }
+       };
+
+       /**
+        * Set the highlight color for a filter item
+        *
+        * @param {string} filterName Name of the filter item
+        * @param {string} color Selected color
+        */
+       mw.rcfilters.Controller.prototype.setHighlightColor = function ( filterName, color ) {
+               this.filtersModel.setHighlightColor( filterName, color );
+               this._updateURL();
+               this._trackHighlight( 'set', { name: filterName, color: color } );
+       };
+
+       /**
+        * Clear highlight for a filter item
+        *
+        * @param {string} filterName Name of the filter item
+        */
+       mw.rcfilters.Controller.prototype.clearHighlightColor = function ( filterName ) {
+               this.filtersModel.clearHighlightColor( filterName );
+               this._updateURL();
+               this._trackHighlight( 'clear', filterName );
+       };
+
+       /**
+        * Enable or disable live updates.
+        * @param {boolean} enable True to enable, false to disable
+        */
+       mw.rcfilters.Controller.prototype.toggleLiveUpdate = function ( enable ) {
+               this.changesListModel.toggleLiveUpdate( enable );
+               if ( this.changesListModel.getLiveUpdate() && this.changesListModel.getNewChangesExist() ) {
+                       this.updateChangesList( null, this.LIVE_UPDATE );
+               }
+       };
+
+       /**
+        * Set a timeout for the next live update.
+        * @private
+        */
+       mw.rcfilters.Controller.prototype._scheduleLiveUpdate = function () {
+               setTimeout( this._doLiveUpdate.bind( this ), 3000 );
+       };
+
+       /**
+        * Perform a live update.
+        * @private
+        */
+       mw.rcfilters.Controller.prototype._doLiveUpdate = function () {
+               if ( !this._shouldCheckForNewChanges() ) {
+                       // skip this turn and check back later
+                       this._scheduleLiveUpdate();
+                       return;
+               }
+
+               this._checkForNewChanges()
+                       .then( function ( newChanges ) {
+                               if ( !this._shouldCheckForNewChanges() ) {
+                                       // by the time the response is received,
+                                       // it may not be appropriate anymore
+                                       return;
+                               }
+
+                               if ( newChanges ) {
+                                       if ( this.changesListModel.getLiveUpdate() ) {
+                                               return this.updateChangesList( null, this.LIVE_UPDATE );
+                                       } else {
+                                               this.changesListModel.setNewChangesExist( true );
+                                       }
+                               }
+                       }.bind( this ) )
+                       .always( this._scheduleLiveUpdate.bind( this ) );
+       };
+
+       /**
+        * @return {boolean} It's appropriate to check for new changes now
+        * @private
+        */
+       mw.rcfilters.Controller.prototype._shouldCheckForNewChanges = function () {
+               return !document.hidden &&
+                       !this.filtersModel.hasConflict() &&
+                       !this.changesListModel.getNewChangesExist() &&
+                       !this.updatingChangesList &&
+                       this.changesListModel.getNextFrom();
+       };
+
+       /**
+        * Check if new changes, newer than those currently shown, are available
+        *
+        * @return {jQuery.Promise} Promise object that resolves with a bool
+        *      specifying if there are new changes or not
+        *
+        * @private
+        */
+       mw.rcfilters.Controller.prototype._checkForNewChanges = function () {
+               var params = {
+                       limit: 1,
+                       peek: 1, // bypasses ChangesList specific UI
+                       from: this.changesListModel.getNextFrom()
+               };
+               return this._queryChangesList( 'liveUpdate', params ).then(
+                       function ( data ) {
+                               // no result is 204 with the 'peek' param
+                               return data.status === 200;
+                       }
+               );
+       };
+
+       /**
+        * Show the new changes
+        *
+        * @return {jQuery.Promise} Promise object that resolves after
+        * fetching and showing the new changes
+        */
+       mw.rcfilters.Controller.prototype.showNewChanges = function () {
+               return this.updateChangesList( null, this.SHOW_NEW_CHANGES );
+       };
+
+       /**
+        * Save the current model state as a saved query
+        *
+        * @param {string} [label] Label of the saved query
+        * @param {boolean} [setAsDefault=false] This query should be set as the default
+        */
+       mw.rcfilters.Controller.prototype.saveCurrentQuery = function ( label, setAsDefault ) {
+               var queryID,
+                       highlightedItems = {},
+                       highlightEnabled = this.filtersModel.isHighlightEnabled(),
+                       selectedState = this.filtersModel.getSelectedState();
+
+               // Prepare highlights
+               this.filtersModel.getHighlightedItems().forEach( function ( item ) {
+                       highlightedItems[ item.getName() ] = highlightEnabled ?
+                               item.getHighlightColor() : null;
+               } );
+               // These are filter states; highlight is stored as boolean
+               highlightedItems.highlight = this.filtersModel.isHighlightEnabled();
+
+               // Delete all excluded filters
+               this._deleteExcludedValuesFromFilterState( selectedState );
+
+               // Add item
+               queryID = this.savedQueriesModel.addNewQuery(
+                       label || mw.msg( 'rcfilters-savedqueries-defaultlabel' ),
+                       {
+                               filters: selectedState,
+                               highlights: highlightedItems,
+                               invert: this.filtersModel.areNamespacesInverted()
+                       }
+               );
+
+               if ( setAsDefault ) {
+                       this.savedQueriesModel.setDefault( queryID );
+               }
+
+               // Save item
+               this._saveSavedQueries();
+       };
+
+       /**
+        * Remove a saved query
+        *
+        * @param {string} queryID Query id
+        */
+       mw.rcfilters.Controller.prototype.removeSavedQuery = function ( queryID ) {
+               this.savedQueriesModel.removeQuery( queryID );
+
+               this._saveSavedQueries();
+       };
+
+       /**
+        * Rename a saved query
+        *
+        * @param {string} queryID Query id
+        * @param {string} newLabel New label for the query
+        */
+       mw.rcfilters.Controller.prototype.renameSavedQuery = function ( queryID, newLabel ) {
+               var queryItem = this.savedQueriesModel.getItemByID( queryID );
+
+               if ( queryItem ) {
+                       queryItem.updateLabel( newLabel );
+               }
+               this._saveSavedQueries();
+       };
+
+       /**
+        * Set a saved query as default
+        *
+        * @param {string} queryID Query Id. If null is given, default
+        *  query is reset.
+        */
+       mw.rcfilters.Controller.prototype.setDefaultSavedQuery = function ( queryID ) {
+               this.savedQueriesModel.setDefault( queryID );
+               this._saveSavedQueries();
+       };
+
+       /**
+        * Load a saved query
+        *
+        * @param {string} queryID Query id
+        */
+       mw.rcfilters.Controller.prototype.applySavedQuery = function ( queryID ) {
+               var data, highlights,
+                       queryItem = this.savedQueriesModel.getItemByID( queryID ),
+                       currentMatchingQuery = this.findQueryMatchingCurrentState();
+
+               if (
+                       queryItem &&
+                       (
+                               // If there's already a query, don't reload it
+                               // if it's the same as the one that already exists
+                               !currentMatchingQuery ||
+                               currentMatchingQuery.getID() !== queryItem.getID()
+                       )
+               ) {
+                       data = queryItem.getData();
+                       highlights = data.highlights;
+
+                       // Backwards compatibility; initial version mispelled 'highlight' with 'highlights'
+                       highlights.highlight = highlights.highlights || highlights.highlight;
+
+                       // Update model state from filters
+                       this.filtersModel.toggleFiltersSelected(
+                               // Merge filters with excluded values
+                               $.extend( true, {}, data.filters, this.filtersModel.getExcludedFiltersState() )
+                       );
+
+                       // Update namespace inverted property
+                       this.filtersModel.toggleInvertedNamespaces( !!Number( data.invert ) );
+
+                       // Update highlight state
+                       this.filtersModel.toggleHighlight( !!Number( highlights.highlight ) );
+                       this.filtersModel.getItems().forEach( function ( filterItem ) {
+                               var color = highlights[ filterItem.getName() ];
+                               if ( color ) {
+                                       filterItem.setHighlightColor( color );
+                               } else {
+                                       filterItem.clearHighlightColor();
+                               }
+                       } );
+
+                       // Check all filter interactions
+                       this.filtersModel.reassessFilterInteractions();
+
+                       this.updateChangesList();
+
+                       // Log filter grouping
+                       this.trackFilterGroupings( 'savedfilters' );
+               }
+       };
+
+       /**
+        * Check whether the current filter and highlight state exists
+        * in the saved queries model.
+        *
+        * @return {boolean} Query exists
+        */
+       mw.rcfilters.Controller.prototype.findQueryMatchingCurrentState = function () {
+               var highlightedItems = {},
+                       selectedState = this.filtersModel.getSelectedState();
+
+               // Prepare highlights of the current query
+               this.filtersModel.getItemsSupportingHighlights().forEach( function ( item ) {
+                       highlightedItems[ item.getName() ] = item.getHighlightColor();
+               } );
+               highlightedItems.highlight = this.filtersModel.isHighlightEnabled();
+
+               // Remove anything that should be excluded from the saved query
+               // this includes sticky filters and filters marked with 'excludedFromSavedQueries'
+               this._deleteExcludedValuesFromFilterState( selectedState );
+
+               return this.savedQueriesModel.findMatchingQuery(
+                       {
+                               filters: selectedState,
+                               highlights: highlightedItems,
+                               invert: this.filtersModel.areNamespacesInverted()
+                       }
+               );
+       };
+
+       /**
+        * Delete sticky filters from given object
+        *
+        * @param {Object} filterState Filter state
+        */
+       mw.rcfilters.Controller.prototype._deleteExcludedValuesFromFilterState = function ( filterState ) {
+               // Remove excluded filters
+               $.each( this.filtersModel.getExcludedFiltersState(), function ( filterName ) {
+                       delete filterState[ filterName ];
+               } );
+       };
+
+       /**
+        * Get an object representing the base state of parameters
+        * and highlights.
+        *
+        * This is meant to make sure that the saved queries that are
+        * in memory are always the same structure as what we would get
+        * by calling the current model's "getSelectedState" and by checking
+        * highlight items.
+        *
+        * In cases where a user saved a query when the system had a certain
+        * set of filters, and then a filter was added to the system, we want
+        * to make sure that the stored queries can still be comparable to
+        * the current state, which means that we need the base state for
+        * two operations:
+        *
+        * - Saved queries are stored in "minimal" view (only changed filters
+        *   are stored); When we initialize the system, we merge each minimal
+        *   query with the base state (using 'getNormalizedFilters') so all
+        *   saved queries have the exact same structure as what we would get
+        *   by checking the getSelectedState of the filter.
+        * - When we save the queries, we minimize the object to only represent
+        *   whatever has actually changed, rather than store the entire
+        *   object. To check what actually is different so we can store it,
+        *   we need to obtain a base state to compare against, this is
+        *   what #_getMinimalFilterList does
+        */
+       mw.rcfilters.Controller.prototype._buildBaseFilterState = function () {
+               var defaultParams = this.filtersModel.getDefaultParams(),
+                       highlightedItems = {};
+
+               // Prepare highlights
+               this.filtersModel.getItemsSupportingHighlights().forEach( function ( item ) {
+                       highlightedItems[ item.getName() ] = null;
+               } );
+               highlightedItems.highlight = false;
+
+               this.baseFilterState = {
+                       filters: this.filtersModel.getFiltersFromParameters( defaultParams ),
+                       highlights: highlightedItems,
+                       invert: false
+               };
+       };
+
+       /**
+        * Get an object representing the base filter state of both
+        * filters and highlights. The structure is similar to what we use
+        * to store each query in the saved queries object:
+        * {
+        *    filters: {
+        *        filterName: (bool)
+        *    },
+        *    highlights: {
+        *        filterName: (string|null)
+        *    }
+        * }
+        *
+        * @return {Object} Object representing the base state of
+        *  parameters and highlights
+        */
+       mw.rcfilters.Controller.prototype._getBaseFilterState = function () {
+               return this.baseFilterState;
+       };
+
+       /**
+        * Get an object that holds only the parameters and highlights that have
+        * values different than the base default value.
+        *
+        * This is the reverse of the normalization we do initially on loading and
+        * initializing the saved queries model.
+        *
+        * @param {Object} valuesObject Object representing the state of both
+        *  filters and highlights in its normalized version, to be minimized.
+        * @return {Object} Minimal filters and highlights list
+        */
+       mw.rcfilters.Controller.prototype._getMinimalFilterList = function ( valuesObject ) {
+               var result = { filters: {}, highlights: {}, invert: valuesObject.invert },
+                       baseState = this._getBaseFilterState();
+
+               // XOR results
+               $.each( valuesObject.filters, function ( name, value ) {
+                       if ( baseState.filters !== undefined && baseState.filters[ name ] !== value ) {
+                               result.filters[ name ] = value;
+                       }
+               } );
+
+               $.each( valuesObject.highlights, function ( name, value ) {
+                       if ( baseState.highlights !== undefined && baseState.highlights[ name ] !== value ) {
+                               result.highlights[ name ] = value;
+                       }
+               } );
+
+               return result;
+       };
+
+       /**
+        * Save the current state of the saved queries model with all
+        * query item representation in the user settings.
+        */
+       mw.rcfilters.Controller.prototype._saveSavedQueries = function () {
+               var stringified,
+                       state = this.savedQueriesModel.getState(),
+                       controller = this;
+
+               // Minimize before save
+               $.each( state.queries, function ( queryID, info ) {
+                       state.queries[ queryID ].data = controller._getMinimalFilterList( info.data );
+               } );
+
+               // Stringify state
+               stringified = JSON.stringify( state );
+
+               if ( $.byteLength( stringified ) > 65535 ) {
+                       // Sanity check, since the preference can only hold that.
+                       return;
+               }
+
+               // Save the preference
+               new mw.Api().saveOption( this.savedQueriesPreferenceName, stringified );
+               // Update the preference for this session
+               mw.user.options.set( this.savedQueriesPreferenceName, stringified );
+       };
+
+       /**
+        * Update sticky preferences with current model state
+        */
+       mw.rcfilters.Controller.prototype.updateStickyPreferences = function () {
+               // Update default sticky values with selected, whether they came from
+               // the initial defaults or from the URL value that is being normalized
+               this.updateDaysDefault( this.filtersModel.getGroup( 'days' ).getSelectedItems()[ 0 ].getParamName() );
+               this.updateLimitDefault( this.filtersModel.getGroup( 'limit' ).getSelectedItems()[ 0 ].getParamName() );
+
+               // TODO: Make these automatic by having the model go over sticky
+               // items and update their default values automatically
+       };
+
+       /**
+        * Update the limit default value
+        *
+        * param {number} newValue New value
+        */
+       mw.rcfilters.Controller.prototype.updateLimitDefault = function ( /* newValue */ ) {
+               // HACK: Temporarily remove this from being sticky
+               // See T172156
+
+               /*
+               if ( !$.isNumeric( newValue ) ) {
+                       return;
+               }
+
+               newValue = Number( newValue );
+
+               if ( mw.user.options.get( 'rcfilters-rclimit' ) !== newValue ) {
+                       // Save the preference
+                       new mw.Api().saveOption( 'rcfilters-rclimit', newValue );
+                       // Update the preference for this session
+                       mw.user.options.set( 'rcfilters-rclimit', newValue );
+               }
+               */
+               return;
+       };
+
+       /**
+        * Update the days default value
+        *
+        * param {number} newValue New value
+        */
+       mw.rcfilters.Controller.prototype.updateDaysDefault = function ( /* newValue */ ) {
+               // HACK: Temporarily remove this from being sticky
+               // See T172156
+
+               /*
+               if ( !$.isNumeric( newValue ) ) {
+                       return;
+               }
+
+               newValue = Number( newValue );
+
+               if ( mw.user.options.get( 'rcdays' ) !== newValue ) {
+                       // Save the preference
+                       new mw.Api().saveOption( 'rcdays', newValue );
+                       // Update the preference for this session
+                       mw.user.options.set( 'rcdays', newValue );
+               }
+               */
+               return;
+       };
+
+       /**
+        * Update the group by page default value
+        *
+        * @param {number} newValue New value
+        */
+       mw.rcfilters.Controller.prototype.updateGroupByPageDefault = function ( newValue ) {
+               if ( !$.isNumeric( newValue ) ) {
+                       return;
+               }
+
+               newValue = Number( newValue );
+
+               if ( mw.user.options.get( 'usenewrc' ) !== newValue ) {
+                       // Save the preference
+                       new mw.Api().saveOption( 'usenewrc', newValue );
+                       // Update the preference for this session
+                       mw.user.options.set( 'usenewrc', newValue );
+               }
+       };
+
+       /**
+        * Synchronize the URL with the current state of the filters
+        * without adding an history entry.
+        */
+       mw.rcfilters.Controller.prototype.replaceUrl = function () {
+               mw.rcfilters.UriProcessor.static.replaceState( this._getUpdatedUri() );
+       };
+
+       /**
+        * Update filter state (selection and highlighting) based
+        * on current URL values.
+        *
+        * @param {boolean} [fetchChangesList=true] Fetch new results into the changes
+        *  list based on the updated model.
+        */
+       mw.rcfilters.Controller.prototype.updateStateFromUrl = function ( fetchChangesList ) {
+               fetchChangesList = fetchChangesList === undefined ? true : !!fetchChangesList;
+
+               this.uriProcessor.updateModelBasedOnQuery( new mw.Uri().query );
+
+               // Update the sticky preferences, in case we received a value
+               // from the URL
+               this.updateStickyPreferences();
+
+               // Only update and fetch new results if it is requested
+               if ( fetchChangesList ) {
+                       this.updateChangesList();
+               }
+       };
+
+       /**
+        * Update the list of changes and notify the model
+        *
+        * @param {Object} [params] Extra parameters to add to the API call
+        * @param {string} [updateMode='filterChange'] One of 'filterChange', 'liveUpdate', 'showNewChanges', 'markSeen'
+        * @return {jQuery.Promise} Promise that is resolved when the update is complete
+        */
+       mw.rcfilters.Controller.prototype.updateChangesList = function ( params, updateMode ) {
+               updateMode = updateMode === undefined ? this.FILTER_CHANGE : updateMode;
+
+               if ( updateMode === this.FILTER_CHANGE ) {
+                       this._updateURL( params );
+               }
+               if ( updateMode === this.FILTER_CHANGE || updateMode === this.SHOW_NEW_CHANGES ) {
+                       this.changesListModel.invalidate();
+               }
+               this.changesListModel.setNewChangesExist( false );
+               this.updatingChangesList = true;
+               return this._fetchChangesList()
+                       .then(
+                               // Success
+                               function ( pieces ) {
+                                       var $changesListContent = pieces.changes,
+                                               $fieldset = pieces.fieldset;
+                                       this.changesListModel.update(
+                                               $changesListContent,
+                                               $fieldset,
+                                               false,
+                                               // separator between old and new changes
+                                               updateMode === this.SHOW_NEW_CHANGES || updateMode === this.LIVE_UPDATE
+                                       );
+                               }.bind( this )
+                               // Do nothing for failure
+                       )
+                       .always( function () {
+                               this.updatingChangesList = false;
+                       }.bind( this ) );
+       };
+
+       /**
+        * Get an object representing the default parameter state, whether
+        * it is from the model defaults or from the saved queries.
+        *
+        * @return {Object} Default parameters
+        */
+       mw.rcfilters.Controller.prototype._getDefaultParams = function () {
+               var data, queryHighlights,
+                       savedParams = {},
+                       savedHighlights = {},
+                       defaultSavedQueryItem = !mw.user.isAnon() && this.savedQueriesModel.getItemByID( this.savedQueriesModel.getDefault() );
+
+               if ( defaultSavedQueryItem ) {
+                       data = defaultSavedQueryItem.getData();
+
+                       queryHighlights = data.highlights || {};
+                       savedParams = this.filtersModel.getParametersFromFilters(
+                               $.extend( true, {}, data.filters, this.filtersModel.getStickyFiltersState() )
+                       );
+
+                       // Translate highlights to parameters
+                       savedHighlights.highlight = String( Number( queryHighlights.highlight ) );
+                       $.each( queryHighlights, function ( filterName, color ) {
+                               if ( filterName !== 'highlights' ) {
+                                       savedHighlights[ filterName + '_color' ] = color;
+                               }
+                       } );
+
+                       return $.extend( true, {}, savedParams, savedHighlights, { invert: String( Number( data.invert || 0 ) ) } );
+               }
+
+               return this.filtersModel.getDefaultParams();
+       };
+
+       /**
+        * Update the URL of the page to reflect current filters
+        *
+        * This should not be called directly from outside the controller.
+        * If an action requires changing the URL, it should either use the
+        * highlighting actions below, or call #updateChangesList which does
+        * the uri corrections already.
+        *
+        * @param {Object} [params] Extra parameters to add to the API call
+        */
+       mw.rcfilters.Controller.prototype._updateURL = function ( params ) {
+               var currentUri = new mw.Uri(),
+                       updatedUri = this._getUpdatedUri();
+
+               updatedUri.extend( params || {} );
+
+               if (
+                       this.uriProcessor.getVersion( currentUri.query ) !== 2 ||
+                       this.uriProcessor.isNewState( currentUri.query, updatedUri.query )
+               ) {
+                       mw.rcfilters.UriProcessor.static.replaceState( updatedUri );
+               }
+       };
+
+       /**
+        * Get an updated mw.Uri object based on the model state
+        *
+        * @return {mw.Uri} Updated Uri
+        */
+       mw.rcfilters.Controller.prototype._getUpdatedUri = function () {
+               var uri = new mw.Uri();
+
+               // Minimize url
+               uri.query = this.uriProcessor.minimizeQuery(
+                       $.extend(
+                               true,
+                               {},
+                               // We want to retain unrecognized params
+                               // The uri params from model will override
+                               // any recognized value in the current uri
+                               // query, retain unrecognized params, and
+                               // the result will then be minimized
+                               uri.query,
+                               this.uriProcessor.getUriParametersFromModel(),
+                               { urlversion: '2' }
+                       )
+               );
+
+               return uri;
+       };
+
+       /**
+        * Query the list of changes from the server for the current filters
+        *
+        * @param {string} counterId Id for this request. To allow concurrent requests
+        *  not to invalidate each other.
+        * @param {Object} [params={}] Parameters to add to the query
+        *
+        * @return {jQuery.Promise} Promise object resolved with { content, status }
+        */
+       mw.rcfilters.Controller.prototype._queryChangesList = function ( counterId, params ) {
+               var uri = this._getUpdatedUri(),
+                       stickyParams = this.filtersModel.getStickyParams(),
+                       requestId,
+                       latestRequest;
+
+               params = params || {};
+               params.action = 'render'; // bypasses MW chrome
+
+               uri.extend( params );
+
+               this.requestCounter[ counterId ] = this.requestCounter[ counterId ] || 0;
+               requestId = ++this.requestCounter[ counterId ];
+               latestRequest = function () {
+                       return requestId === this.requestCounter[ counterId ];
+               }.bind( this );
+
+               // Sticky parameters override the URL params
+               // this is to make sure that whether we represent
+               // the sticky params in the URL or not (they may
+               // be normalized out) the sticky parameters are
+               // always being sent to the server with their
+               // current/default values
+               uri.extend( stickyParams );
+
+               return $.ajax( uri.toString(), { contentType: 'html' } )
+                       .then(
+                               function ( content, message, jqXHR ) {
+                                       if ( !latestRequest() ) {
+                                               return $.Deferred().reject();
+                                       }
+                                       return {
+                                               content: content,
+                                               status: jqXHR.status
+                                       };
+                               },
+                               // RC returns 404 when there is no results
+                               function ( jqXHR ) {
+                                       if ( latestRequest() ) {
+                                               return $.Deferred().resolve(
+                                                       {
+                                                               content: jqXHR.responseText,
+                                                               status: jqXHR.status
+                                                       }
+                                               ).promise();
+                                       }
+                               }
+                       );
+       };
+
+       /**
+        * Fetch the list of changes from the server for the current filters
+        *
+        * @return {jQuery.Promise} Promise object that will resolve with the changes list
+        *  and the fieldset.
+        */
+       mw.rcfilters.Controller.prototype._fetchChangesList = function () {
+               return this._queryChangesList( 'updateChangesList' )
+                       .then(
+                               function ( data ) {
+                                       var $parsed = $( '<div>' ).append( $( $.parseHTML( data.content ) ) ),
+                                               pieces = {
+                                                       // Changes list
+                                                       changes: $parsed.find( '.mw-changeslist' ).first().contents(),
+                                                       // Fieldset
+                                                       fieldset: $parsed.find( 'fieldset.cloptions' ).first()
+                                               };
+
+                                       if ( pieces.changes.length === 0 ) {
+                                               pieces.changes = 'NO_RESULTS';
+                                       }
+
+                                       return pieces;
+                               }
+                       );
+       };
+
+       /**
+        * Track usage of highlight feature
+        *
+        * @param {string} action
+        * @param {Array|Object|string} filters
+        */
+       mw.rcfilters.Controller.prototype._trackHighlight = function ( action, filters ) {
+               filters = typeof filters === 'string' ? { name: filters } : filters;
+               filters = !Array.isArray( filters ) ? [ filters ] : filters;
+               mw.track(
+                       'event.ChangesListHighlights',
+                       {
+                               action: action,
+                               filters: filters,
+                               userId: mw.user.getId()
+                       }
+               );
+       };
+
+       /**
+        * Track filter grouping usage
+        *
+        * @param {string} action Action taken
+        */
+       mw.rcfilters.Controller.prototype.trackFilterGroupings = function ( action ) {
+               var controller = this,
+                       rightNow = new Date().getTime(),
+                       randomIdentifier = String( mw.user.sessionId() ) + String( rightNow ) + String( Math.random() ),
+                       // Get all current filters
+                       filters = this.filtersModel.getSelectedItems().map( function ( item ) {
+                               return item.getName();
+                       } );
+
+               action = action || 'filtermenu';
+
+               // Check if these filters were the ones we just logged previously
+               // (Don't log the same grouping twice, in case the user opens/closes)
+               // the menu without action, or with the same result
+               if (
+                       // Only log if the two arrays are different in size
+                       filters.length !== this.prevLoggedItems.length ||
+                       // Or if any filters are not the same as the cached filters
+                       filters.some( function ( filterName ) {
+                               return controller.prevLoggedItems.indexOf( filterName ) === -1;
+                       } ) ||
+                       // Or if any cached filters are not the same as given filters
+                       this.prevLoggedItems.some( function ( filterName ) {
+                               return filters.indexOf( filterName ) === -1;
+                       } )
+               ) {
+                       filters.forEach( function ( filterName ) {
+                               mw.track(
+                                       'event.ChangesListFilterGrouping',
+                                       {
+                                               action: action,
+                                               groupIdentifier: randomIdentifier,
+                                               filter: filterName,
+                                               userId: mw.user.getId()
+                                       }
+                               );
+                       } );
+
+                       // Cache the filter names
+                       this.prevLoggedItems = filters;
+               }
+       };
+
+       /**
+        * Mark all changes as seen on Watchlist
+        */
+       mw.rcfilters.Controller.prototype.markAllChangesAsSeen = function () {
+               var api = new mw.Api();
+               api.postWithToken( 'csrf', {
+                       formatversion: 2,
+                       action: 'setnotificationtimestamp',
+                       entirewatchlist: true
+               } ).then( function () {
+                       this.updateChangesList( null, 'markSeen' );
+               }.bind( this ) );
+       };
+}( mediaWiki, jQuery ) );