--- /dev/null
+/*!
+ * VisualEditor UserInterface MWReferenceSearchWidget class.
+ *
+ * @copyright 2011-2017 Cite VisualEditor Team and others; see AUTHORS.txt
+ * @license The MIT License (MIT); see LICENSE.txt
+ */
+
+/**
+ * Creates an ve.ui.MWReferenceSearchWidget object.
+ *
+ * @class
+ * @extends OO.ui.SearchWidget
+ *
+ * @constructor
+ * @param {Object} [config] Configuration options
+ */
+ve.ui.MWReferenceSearchWidget = function VeUiMWReferenceSearchWidget( config ) {
+ // Configuration initialization
+ config = ve.extendObject( {
+ placeholder: ve.msg( 'cite-ve-reference-input-placeholder' )
+ }, config );
+
+ // Parent constructor
+ ve.ui.MWReferenceSearchWidget.super.call( this, config );
+
+ // Properties
+ this.index = [];
+ this.indexEmpty = true;
+ this.built = false;
+
+ // Initialization
+ this.$element.addClass( 've-ui-mwReferenceSearchWidget' );
+};
+
+/* Inheritance */
+
+OO.inheritClass( ve.ui.MWReferenceSearchWidget, OO.ui.SearchWidget );
+
+/* Methods */
+
+/**
+ * Handle query change events.
+ *
+ * @method
+ * @param {string} value New value
+ */
+ve.ui.MWReferenceSearchWidget.prototype.onQueryChange = function () {
+ // Parent method
+ ve.ui.MWReferenceSearchWidget.super.prototype.onQueryChange.call( this );
+
+ // Populate
+ this.addResults();
+};
+
+/**
+ * Set the internal list and check if it contains any references
+ *
+ * @param {ve.dm.InternalList} internalList Internal list
+ */
+ve.ui.MWReferenceSearchWidget.prototype.setInternalList = function ( internalList ) {
+ var i, iLen, groupNames, groupName, groups = internalList.getNodeGroups();
+
+ if ( this.results.getSelectedItem() ) {
+ this.results.getSelectedItem().setSelected( false );
+ }
+
+ this.internalList = internalList;
+ this.internalList.connect( this, { update: 'onInternalListUpdate' } );
+ this.internalList.getListNode().connect( this, { update: 'onListNodeUpdate' } );
+
+ groupNames = Object.keys( groups );
+ for ( i = 0, iLen = groupNames.length; i < iLen; i++ ) {
+ groupName = groupNames[ i ];
+ if ( groupName.lastIndexOf( 'mwReference/' ) !== 0 ) {
+ continue;
+ }
+ if ( groups[ groupName ].indexOrder.length ) {
+ this.indexEmpty = false;
+ return;
+ }
+ }
+ this.indexEmpty = true;
+};
+
+/**
+ * Handle the updating of the InternalList object.
+ *
+ * This will occur after a document transaction.
+ *
+ * @method
+ * @param {string[]} groupsChanged A list of groups which have changed in this transaction
+ */
+ve.ui.MWReferenceSearchWidget.prototype.onInternalListUpdate = function ( groupsChanged ) {
+ var i, len;
+ for ( i = 0, len = groupsChanged.length; i < len; i++ ) {
+ if ( groupsChanged[ i ].indexOf( 'mwReference/' ) === 0 ) {
+ this.built = false;
+ break;
+ }
+ }
+};
+
+/**
+ * Handle the updating of the InternalListNode.
+ *
+ * This will occur after changes to any InternalItemNode.
+ *
+ * @method
+ */
+ve.ui.MWReferenceSearchWidget.prototype.onListNodeUpdate = function () {
+ this.built = false;
+};
+
+/**
+ * Build a searchable index of references.
+ *
+ * @method
+ */
+ve.ui.MWReferenceSearchWidget.prototype.buildIndex = function () {
+ var n, i, iLen, j, jLen, refModel, group, groupName, groupNames, view, text, firstNodes, indexOrder,
+ refGroup, refNode, matches, name, citation,
+ groups = this.internalList.getNodeGroups();
+
+ if ( this.built ) {
+ return;
+ }
+
+ function extractAttrs() {
+ text += ' ' + this.getAttribute( 'href' );
+ }
+
+ this.index = [];
+ groupNames = Object.keys( groups ).sort();
+
+ for ( i = 0, iLen = groupNames.length; i < iLen; i++ ) {
+ groupName = groupNames[ i ];
+ if ( groupName.lastIndexOf( 'mwReference/' ) !== 0 ) {
+ continue;
+ }
+ group = groups[ groupName ];
+ firstNodes = group.firstNodes;
+ indexOrder = group.indexOrder;
+
+ n = 0;
+ for ( j = 0, jLen = indexOrder.length; j < jLen; j++ ) {
+ refNode = firstNodes[ indexOrder[ j ] ];
+ // Exclude placeholder references
+ if ( refNode.getAttribute( 'placeholder' ) ) {
+ continue;
+ }
+ // Only increment counter for real references
+ n++;
+ refModel = ve.dm.MWReferenceModel.static.newFromReferenceNode( refNode );
+ view = new ve.ui.MWPreviewElement(
+ this.internalList.getItemNode( refModel.getListIndex() )
+ );
+
+ refGroup = refModel.getGroup();
+ citation = ( refGroup && refGroup.length ? refGroup + ' ' : '' ) + n;
+ matches = refModel.getListKey().match( /^literal\/(.*)$/ );
+ name = matches && matches[ 1 ] || '';
+ // Hide previously auto-generated reference names
+ if ( name.match( /^:[0-9]+$/ ) ) {
+ name = '';
+ }
+
+ // TODO: At some point we need to make sure this text is updated in
+ // case the view node is still rendering. This shouldn't happen because
+ // all references are supposed to be in the store and therefore are
+ // immediately rendered, but we shouldn't trust that on principle to
+ // account for edge cases.
+
+ // Make visible text, citation and reference name searchable
+ text = [ view.$element.text().toLowerCase(), citation, name ].join( ' ' );
+ // Make URLs searchable
+ view.$element.find( 'a[href]' ).each( extractAttrs );
+
+ this.index.push( {
+ $element: view.$element,
+ text: text,
+ reference: refModel,
+ citation: citation,
+ name: name
+ } );
+ }
+ }
+
+ // Re-populate
+ this.onQueryChange();
+
+ this.built = true;
+};
+
+/**
+ * Check whether buildIndex will create an empty index based on the current internalList.
+ *
+ * @return {boolean} Index is empty
+ */
+ve.ui.MWReferenceSearchWidget.prototype.isIndexEmpty = function () {
+ return this.indexEmpty;
+};
+
+/**
+ * Handle media query response events.
+ *
+ * @method
+ */
+ve.ui.MWReferenceSearchWidget.prototype.addResults = function () {
+ var i, len, item, $citation, $name,
+ query = this.query.getValue().trim().toLowerCase(),
+ items = [];
+
+ for ( i = 0, len = this.index.length; i < len; i++ ) {
+ item = this.index[ i ];
+ if ( item.text.indexOf( query ) >= 0 ) {
+ $citation = $( '<div>' )
+ .addClass( 've-ui-mwReferenceSearchWidget-citation' )
+ .text( '[' + item.citation + ']' );
+ $name = $( '<div>' )
+ .addClass( 've-ui-mwReferenceSearchWidget-name' )
+ .text( item.name );
+ items.push(
+ new ve.ui.MWReferenceResultWidget( {
+ data: item.reference,
+ label: $citation.add( $name ).add( item.$element )
+ } )
+ );
+ }
+ }
+
+ this.results.addItems( items );
+};
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