An instance of this interface provides support for managing a a shared operations history and an shared undo context at the
An operation approver that prompts the user to see if linear undo violations are permitted.
An operation approver that prompts the user to see if a non-local undo should proceed inside an editor.
OperationHistoryActionHandler implements common behavior for the undo and redo actions.
RedoActionHandler provides common behavior for redoing an operation, as well as labelling and enabling the menu item.
UndoActionHandler provides common behavior for performing an undo, as well as labelling and enabling the undo menu item.
UndoRedoActionGroup provides standard undo and redo action handlers for a workbench part site.
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