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/ActionContributionItem.java
private Listener buttonListener;
	/**
	 * Listener for SWT menu item widget events.
	 */
	private Listener menuItemListener;
	/**
	 * Listener for action property change notifications.
	 */
	private final IPropertyChangeListener propertyListener = new IPropertyChangeListener() {
		public void propertyChange(PropertyChangeEvent event) {
			actionPropertyChange(event);
		}
	};
	/**
	 * Listener for SWT tool item widget events.
	 */
	private Listener toolItemListener;
	/**
	 * The widget created for this item; <code>null</code> before creation and
	 * after disposal.
	 */
	private Widget widget = null;
	private Listener menuCreatorListener;
	/**
	 * Creates a new contribution item from the given action. The id of the
	 * action is used as the id of the item.
	 * 
	 * @param action
	 *            the action
	 */