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
/**
		 * Constructs a new instance of <code>CommandCallback</code> with the
		 * workbench it should be using.
		 * 
		 * @param bindingManager
		 *            The binding manager which will provide the callback; must
		 *            not be <code>null</code>.
		 * @param commandManager
		 *            The command manager which will provide the callback; must
		 *            not be <code>null</code>.
		 * @param activeChecker
		 *            The callback mechanism for checking whether a command is
		 *            active; must not be <code>null</code>.
		 * 
		 * @since 3.1
		 */
		public CommandCallback(final BindingManager bindingManager,
				final CommandManager commandManager,
				final IActiveChecker activeChecker) {
			if (bindingManager == null) {
				throw new NullPointerException(
						"The callback needs a binding manager"); 
			}
			if (commandManager == null) {
				throw new NullPointerException(
						"The callback needs a command manager"); 
			}
			if (activeChecker == null) {
				throw new NullPointerException(
						"The callback needs an active callback");