# HG changeset patch
# User Giulio Moro <giuliomoro@yahoo.it>
# Date 1461501763 -3600
# Node ID bd0bd3033ac5bb54330251d6c8c3a931ff451bab
# Parent  d537911d9b2554b3fc7bcfc22b98cb323d7ba4da
Added check for one of A/B to be selected

diff -r d537911d9b25 -r bd0bd3033ac5 core.js
--- a/core.js	Fri Apr 22 02:43:21 2016 +0100
+++ b/core.js	Sun Apr 24 13:42:43 2016 +0100
@@ -305,7 +305,7 @@
 		break;
 		
 		case "AB":
-		interfaceJS.setAttribute("src","interfaces/AB.js?0");
+		interfaceJS.setAttribute("src","interfaces/AB.js?"+Math.random());
 		
 		// AB comes with a css file
 		var css = document.createElement('link');
@@ -3133,9 +3133,19 @@
 		str +='.';
 		alert(str);
 		console.log(str);
-        this.storeErrorNode(str);
+		this.storeErrorNode(str);
 		return false;
 	};
+	this.checkOneFragmentSelected = function(){
+		console.log("checkOneFragmentSelected");
+		var str = "You should select an answer before continuing";
+		if(this.comparator.selected === null){
+			alert(str);
+			return false;
+		} else {
+			return true;
+		}
+ 	};
 	this.checkAllPlayed = function()
 	{
 		var str = "You have not played ";
diff -r d537911d9b25 -r bd0bd3033ac5 interfaces/AB.js
--- a/interfaces/AB.js	Fri Apr 22 02:43:21 2016 +0100
+++ b/interfaces/AB.js	Sun Apr 24 13:42:43 2016 +0100
@@ -361,6 +361,7 @@
 	checks = checks.concat(specification.interfaces.options);
 	var canContinue = true;
 	
+	console.log('checks');
 	for (var i=0; i<checks.length; i++) {
 		if (checks[i].type == 'check')
 		{
@@ -380,6 +381,10 @@
 				var checkState = interfaceContext.checkAllMoved();
 				if (checkState == false) {canContinue = false;}
 				break;
+			case 'oneFragmentSelected':
+				var checkState = interfaceContext.checkOneFragmentSelected();
+				if (checkState == false) {canContinue = false;}
+				break;
 			case 'fragmentComments':
 				// Check all fragment sliders have been moved.
 				var checkState = interfaceContext.checkAllCommented();