Alert Causes Tree to Invoke Item Editor

Attached is a very simplified version of my application which
is causing me a headache. I have a Tree to which I have added a
custom ContextMenu, with options to Delete and Rename items in the
Tree. When a user selects "Delete", I force them to confirm the
deletion by showing an Alert, with YES/NO options. However,
regardless of what option they choose, when they click one of the
buttons, the Tree suddenly shows one of the items in edit mode. I
can't understand why.
To reproduce:
1. Compile the attached code in a Flex Project and open the
application in a browser.
2. Open the "Parent" node in the Tree.
3. Select the "Child" node.
4. Right-click with your mouse in the Tree and select Delete.
5. Select either Yes or No.
Any help with preventing this behavior from happening would
be greatly appreciated.
Thank you.

I am pretty sure it is possible, but I have not done it. You
will probably need to cancel the default behavior of click event.
Tracy

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When I turn on the DataGrid's editing, and double-click a cell, it takes the entire array of the col dataField for that column's cell, converts that array to a string, and displays the entire string in the edit text box. If I cancel the editing, or save the editing, it sets the string to the .col property. Then the labelFunction tries reading that string as an array, and it crashes. I was able to get the typeof the col dataField and converting it to an array if it's a string, but I shouldn't have to.
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Thanks for your response! I had seen that function before, but as there was nothing in it, I couldn't figure out if it was useful. Going back, I looked at the comments. I also found this website about item editors: The Item Editing Process
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