987: Collection wordclouds only work for oai_dc based collections

Task-Url: https://pm.winseda.de/issues/987

css/application.css

@@ -370,6 +370,7 @@ a:active i {
 
 .wordcloud {
 	text-align: center;
+	margin-top: 10px;
 }
 
 .wordcloud text:hover {

js/home.js

@@ -25,7 +25,7 @@ var Home = function(options) {
 };
 
 Home.prototype.handleTagTextClicked = function(tag) {
-	$("#expression").val(tag.count);
+	$("#expression").val(tag.text);
 	$("#search-form").submit();
 };
 

js/search/search.js

@@ -26,6 +26,7 @@ $(document).ready(function() {
 		
 	var clouds = [];
 	
+	queryHandler.loadPlaceholderTagcloud();
 	
 	/*queryHandler.assignEventHandlers();
 	queryHandler.updateDisplayedCollections();
@@ -89,6 +90,57 @@ var QueryHandler = function(options) {
 	}
 };
 
+QueryHandler.prototype.loadPlaceholderTagcloud = function() {
+	var _this = this;
+	$.ajax({
+	    url: __util.getBaseUrl() + (_this.options.customSearch!=null ? ("/custom/" + _this.options.customSearch) : "") + "/tags?analyzer=Wordcloud&size=100",
+	    type: "GET",
+	    dataType: "json",
+	    success: function(data) {
+    		var tags = [];
+    		for (var i=0; i<data.length; i++) {
+    			tags.push({
+    				text: data[i].term,
+    				size: (data[i].weight * 80) + 7,
+    				title: data[i].count + " occurences"
+    			});
+    		}
+	    	tagCloud = new TagCloud({
+				tags: tags,
+				containerSelector: "#wordcloud-placeholder",
+				animateFontSize: true,
+				w: 600, 
+				h: 400,
+				textClickEvent: function(tag) {
+					_this.expandSearch(tag.text);
+				}
+			});
+	    }
+	});
+};
+
+QueryHandler.prototype.expandSearch = function(expression) {
+	if (expression==null || expression==="") {
+		return;
+	}	
+	var _this = this;
+	if ($("#expression").length>0) {
+		if ($("#expression").val().length>0) {
+			$("#expression").val($("#expression").val() + " " + expression);
+		} else {
+			$("#expression").val(expression);
+		}
+		this.doSearch();
+	} else if ("#facet-selection-container".length > 0) {
+		this.addSearchFacet(function(facetElement) {
+			$(facetElement).find(".search-facet-expression").val(expression);
+			//_this.doSearch();
+		});
+		
+	}
+};
+
+
 QueryHandler.prototype.selectFacetingSchema = function() {
 	this.schemaId = $("#schemaId").val();
 	var container = $("#facet-schema-info");