issue 160, fix a bug for do not display user defined language when modify widget code

git-svn-id: http://xe-core.googlecode.com/svn/branches/1.5.0@9245 201d5d3c-b55e-5fd7-737f-ddc643e51545

modules/widget/tpl/js/multi_lang.js

@@ -0,0 +1,30 @@
+(function($){
+
+xe.MultiLangManager = xe.createApp("MultiLangManager", {
+	$keyObj: null,
+
+	init: function(key){
+		var $keyObj = this.$keyObj = $('.extra_vars input[name='+key+']');
+	},
+
+	API_MULTILANG_SYNC: function(){
+		var self = this;
+		var regexp = /^\$user_lang\-\>/;
+
+		var langCode = this.$keyObj.val();
+		if (!regexp.test(langCode)) return;
+
+		function on_complete(data){
+			if (data.error){
+				alert(data.message);
+				return;
+			}
+
+			$('#' + self.$keyObj.attr('name')).val(data.lang);
+		}
+
+		$.exec_json('module.getLangByLangcode', {'langCode': langCode}, on_complete);
+	}
+});
+
+})(jQuery);