RFR: 6788481: CellEditorListener.editingCanceled is never called

[Alexander Zvegintsev]

On Thu, 3 Nov 2022 07:05:10 GMT, Prasanta Sadhukhan <psadhukhan at openjdk.org> wrote:

> When editing of a table cell is canceled, the function editingCanceled of the registered listener CellEditorListener is not called as actionPerformed on ESC key press was not notifying the "cancel" listeners.
> Fix is to handle "Cancel" action in actionPerformed() by forwarding the Cancel message from CellEditor to the delegate so that it can call `AbstractCellEditor.fireEditingCanceled(`) which notifies all listeners of cancel event.

Marked as reviewed by azvegint (Reviewer).

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PR: https://git.openjdk.org/jdk/pull/10964