Bug 204458 [Commands] Allow menu and toolbars to fire execution events
Keybindings will currently fire execution events when executing actions from the action framework. i.e. IActions with their actionDefinitionId set and IActionDelegates with the definitionId attribute in their action contributions. But it would be nice if selecting the menu or tool item would also fire the equivalent events. PW
bundles/org.eclipse.jface/src/org/eclipse/jface/action/ExternalActionManager.java
/**
		 * <p>
		 * Adds a listener to the object referenced by <code>identifier</code>.
		 * This listener will be notified if a property of the item is to be
		 * changed. This identifier is specific to mechanism being used. In the
		 * case of the Eclipse workbench, this is the command identifier.
		 * </p>
		 * <p>
		 * Has no effect if an identical listener has already been added for
		 * the <code>identifier</code>.
		 * </p>
		 * 
		 * @param identifier
		 *            The identifier of the item to which the listener should be
		 *            attached; must not be <code>null</code>.