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
return activeChecker.isActive(commandId);
			}
			return true;
		}
		/**
		 * @see org.eclipse.jface.action.ExternalActionManager.ICallback#removePropertyChangeListener(String,
		 *      IPropertyChangeListener)
		 */
		public final void removePropertyChangeListener(final String commandId,
				final IPropertyChangeListener listener) {
			Object existing= registeredListeners.get(commandId);
			if (existing == listener) {
				registeredListeners.remove(commandId);
				if (registeredListeners.isEmpty()) {
					bindingManager.removeBindingManagerListener(this);
					bindingManagerListenerAttached = false;
				}
			} else if (existing instanceof ListenerList) {
				ListenerList existingList = (ListenerList) existing;
				existingList.remove(listener);
				if (existingList.size() == 1) {
					registeredListeners.put(commandId, existingList.getListeners()[0]);
				}
			}
		}
	}
	/**
	 * Defines a callback mechanism for developer who wish to further control
	 * the visibility of legacy action-based contribution items.
	 *