hide prev/next image buttons when splitBy is not active

pdb-ui/src/main/resources/resources/js/search.js

@@ -257,8 +257,7 @@ function enableSplitBy(fieldValues) {
 	splitBy['values'] = fieldValues;
 	splitBy['index'] = 0;
 	splitBy['query'] = $('#search-input').val();
-	$('#prev_image').show();
-	$('#next_image').show();
+	showSplitBy();
 }
 
 function disableSplitBy() {
@@ -266,6 +265,17 @@ function disableSplitBy() {
 	splitBy['values'] = [];
 	splitBy['index'] = 0;
 	splitBy['query'] = '';
+	hideSplitBy();
+}
+
+function showSplitBy(){
+	if(splitBy['values'].length > 0) {
+		$('#prev_image').show();
+		$('#next_image').show();
+	}
+}
+
+function hideSplitBy(){
 	$('#prev_image').hide();
 	$('#next_image').hide();
 }
@@ -322,6 +332,7 @@ function showLoadingIcon()
 {
 	//$('#result-view').html("<div class='center'><div class='uil-cube-css' style='-webkit-transform:scale(0.41)'><div /><div></div><div></div><div></div></div></div>");
 	$('#result-image').html("");
+	hideSplitBy();
 	startInvaders();
 }
 
@@ -394,8 +405,10 @@ function sendPlotRequest(query){
 	
 	var success = function(response){
 		$('#result-image').html('<img src=\"'+response.imageUrls+'" />');
+		showSplitBy();
 	};
 	var error = function(e) {
+		showSplitBy();
 		if (e.status == 404){
 			$('#result-image').text("No data points found for query: " + query);
 		}