976: Limit queries to custom search to predefined collections

Task-Url: https://pm.winseda.de/issues/976

js/search/search.js

 var queryHandler;
 $(document).ready(function() {
-	queryHandler = new QueryHandler({});
+	queryHandler = new QueryHandler({
+		customSearch: $("#customSearchPrefix").val()
+	});
 	
 	__translator.getTranslations();
 	
@@ -21,7 +23,7 @@ $(document).ready(function() {
 	$("#query_size").bind("slider:ready", function (event, data) {
 		$("#query_size_shown").text(data.value);
 	});
-	
+		
 	var clouds = [];
 	
 	
@@ -38,7 +40,8 @@ $(window).resize(function() {
 
 var QueryHandler = function(options) {
 	var _this = this;
-	this.options = $.extend({ 	
+	this.options = $.extend({
+		customSearch : null,
 		wordcloud : {
 			animate: true,
 			animateDirection: "topDown",
@@ -589,6 +592,7 @@ QueryHandler.prototype.buildQuery = function(isShowMore) {
 	query.explain = $("#explain").prop('checked');
 	query.includeOriginal = $("#includeOriginal").prop('checked');
 	query.sourceIds = sourceSelection.getSelectedSourceIds();
+	query.customSearch = this.options.customSearch;
 	
 	//query.providerIds = JSON.parse($("#providerIds").val());
 	//query.userCollectionId = parseInt($("#userCollectionId").val());