setDataSource method leads to not working clear/deselect button and expand functionality

[kendo-bot]

Using setDataSource method on a working DropDownTree, with same initial settings leads to not working clea button and not expanding a collapsed node.

Dojo: https://dojo.telerik.com/uLUNudEJ

Steps (clear button):

1. Open dojo and check that everything works correctly

2. Click reload button (calls setDataSource)

3. Clear all button does not work and cannot deselect the item from the tag's clear button.

Steps (expand):

1. Open dojo and open popup to see everything expands as expected

2. Click reload

3. Open popup

4. The last (initially collapsed) node cannot be expanded.

[veselints]

The issue in question is caused by the Dojo implementation and not by a bug in the DropDownTree widget:

• The reference to the DropDownTree is not properly retrieved;
• The setDataSource() requires a kendo.data.HierarchicalDataSource as a parameter to properly pass it to the widget:

$("#dropdowntree").data("kendoDropDownTree").setDataSource(new kendo.data.HierarchicalDataSource({ data: dataSource }));

Here is a properly working version of the Dojo sample:
https://dojo.telerik.com/uLUNudEJ/4