Item view improved

js/search/search.sourceSelection.js

 var SourceSelection = function(options) {
 	this.options = $.extend({
-		listSize : 5,
+		listSize : 10,
 		
 		collectionColors: ["#1f77b4", "#ff7f0e", "#2ca02c", "#d62728", "#9467bd", 
 			"#8c564b", "#e377c2", "#7f7f7f", "#bcbd22", "#17becf" ]
@@ -43,6 +43,12 @@ SourceSelection.prototype.handleSelection = function() {
 	}
 	this.renderDatasourceList();
 	if (search!==undefined && search.search!==undefined) {
+		if ($("#expression").length>0) {
+			let queryString = $("#expression").val();
+			if (queryString==null || queryString=="") {
+				$("#expression").val("*");
+			}
+		}		
 		search.search();
 	}
 };
@@ -206,5 +212,4 @@ SourceSelection.prototype.handleSelectionDialogAccepted = function() {
     });
 	
 	this.setSelectedSourceIds(allSelected ? [] : selectedDatasources);
-};
-
+};
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