Delete chars in JGoText instead of Node?

I create a Node whic include a editable JGoText and other elements.
In the JGoView,I catch the “Delete” key to delete JGoView selection.But when i am edit the JGoText,I select some text chars,then press “Delete”,I only want to delete the JGoText chars,but not delete the Node.
How to implement this?

This looks like a duplicate of the problem reported here:
please go to that topic for a continuation of the discussion.