@Override
protected void makeActions(final IWorkbenchWindow window) {
	// Creates the actions and registers them.
	// Registering is needed to ensure that key bindings work.
	// The corresponding commands keybindings are defined in the plugin.xml
	// file.
	// Registering also provides automatic disposal of the actions when
	// the window is closed.

	register(ActionFactory.UNDO.create(window));
	register(ActionFactory.REDO.create(window));
	register(ActionFactory.DELETE.create(window));
        ...
}