From e0236186e5951c85c8c6bd7b4ae995288f174b6d Mon Sep 17 00:00:00 2001
From: Georgi Krustev <ggkrustev@yahoo.com>
Date: Tue, 19 Jan 2016 18:58:00 +0200
Subject: [PATCH] Widget throws an exception when search in grouped list. Fixes
 telerik/kendo-ui-core#1374

---
 src/kendo.dropdownlist.js       |  3 ++-
 tests/dropdownlist/searching.js | 18 ++++++++++++++++++
 2 files changed, 20 insertions(+), 1 deletion(-)

diff --git a/src/kendo.dropdownlist.js b/src/kendo.dropdownlist.js
index b3427c08f64..2183395ac1e 100644
--- a/src/kendo.dropdownlist.js
+++ b/src/kendo.dropdownlist.js
@@ -705,7 +705,7 @@ var __meta__ = { // jshint ignore:line
 
         _selectNext: function() {
             var that = this;
-            var data = that.dataSource.flatView().toJSON();
+            var data = that.dataSource.flatView();
             var dataLength = data.length + (that.hasOptionLabel() ? 1 : 0);
             var isInLoop = sameCharsOnly(that._word, that._last);
             var startIndex = that.selectedIndex;
@@ -719,6 +719,7 @@ var __meta__ = { // jshint ignore:line
                 startIndex = normalizeIndex(startIndex, dataLength);
             }
 
+            data = data.toJSON ? data.toJSON() : data.slice();
             data = that._shuffleData(data, startIndex);
 
             for (var idx = 0; idx < dataLength; idx++) {
diff --git a/tests/dropdownlist/searching.js b/tests/dropdownlist/searching.js
index b288636fa4d..b39aa8eec3a 100644
--- a/tests/dropdownlist/searching.js
+++ b/tests/dropdownlist/searching.js
@@ -607,4 +607,22 @@
         dropdownlist.open();
         dropdownlist.filterInput.val("or").keydown();
     });
+
+    test("search select first match of grouped list", function() {
+        var data = [{text: "Foo", value: 1, type: "a"}, {text:"Bar", value:2, type: "b"}, {text:"Baz", value:3, type: "a"}];
+        var dropdownlist = new DropDownList(input, {
+            dataTextField: "text",
+            dataValueField: "value",
+            dataSource: {
+                data: data,
+                group: { field: "type" }
+            }
+        });
+
+        dropdownlist.wrapper.focus().press("b");
+        dropdownlist.wrapper.focus().press("b");
+
+        ok(dropdownlist.ul.children().eq(2).text(), "Bar");
+        ok(dropdownlist.ul.children().eq(2).hasClass("k-state-selected"));
+    });
 })();