Bug 198562 [Contributions] Change ActionContributionItem + CommandContributionItem to use event coordinates
In order to enable RTL support on Linux, we have changed the recommended way of determining the location of a Toolitem pop up menu. Attaching a patch for UI.
bundles/org.eclipse.jface/src/org/eclipse/jface/action/ActionContributionItem.java
if (action != null) {
				String commandId = action.getActionDefinitionId();
				ExternalActionManager.ICallback callback = ExternalActionManager
						.getInstance().getCallback();
				if ((callback != null) && (commandId != null)) {
					callback.addPropertyChangeListener(commandId,
							actionTextListener);
				}
			}
		}
	}
	/**
	 * Returns the action associated with this contribution item.
	 * 
	 * @return the action
	 */
	public IAction getAction() {
		return action;
	}
	/**
	 * Returns the listener for SWT button widget events.
	 * 
	 * @return a listener for button events
	 */
	private Listener getButtonListener() {
		if (buttonListener == null) {
			buttonListener = new Listener() {
				public void handleEvent(Event event) {
					switch (event.type) {
					case SWT.Dispose: