Bug 320989 NPE in CocoaUIHandler
This happened in my Tutorial-RCP when opening a second window and hitting CMD+Q. !ENTRY org.eclipse.e4.ui.workbench 4 0 2010-07-27 12:18:00.823 !MESSAGE Internal Error !STACK 0 java.lang.NullPointerException at org.eclipse.e4.ui.workbench.renderers.swt.cocoa.CocoaUIHandler.findAction(CocoaUIHandler.java:662) at org.eclipse.e4.ui.workbench.renderers.swt.cocoa.CocoaUIHandler.runAction(CocoaUIHandler.java:554) at org.eclipse.e4.ui.workbench.renderers.swt.cocoa.CocoaUIHandler.quitMenuItemSelected(CocoaUIHandler.java:725) at org.eclipse.e4.ui.workbench.renderers.swt.cocoa.CocoaUIHandler.actionProc(CocoaUIHandler.java:748) at org.eclipse.swt.internal.cocoa.OS.objc_msgSendSuper(Native Method) at org.eclipse.swt.widgets.Display.applicationSendEvent(Display.java:4582) at org.eclipse.swt.widgets.Display.applicationProc(Display.java:4659) at org.eclipse.swt.internal.cocoa.OS.objc_msgSend(Native Method) at org.eclipse.swt.internal.cocoa.NSApplication.sendEvent(NSApplication.java:115) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3274) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$4.run(PartRenderingEngine.java:713)
bundles/org.eclipse.e4.ui.workbench.renderers.swt.cocoa/src/org/eclipse/e4/ui/workbench/renderers/swt/cocoa/CocoaUIHandler.java
MMenuItem found = findAction(actionId, (MMenu) item);
				if (found != null)
					return found;
			}
		}
		return null;
	}
	/*
	 * Action implementations for the toolbar button and preferences and about
	 * menu items
	 */
	void toolbarButtonClicked(NSControl source) {
		try {
			NSWindow window = source.window();
			Field idField = NSWindow.class.getField("id"); 
			Object idValue = idField.get(window);
			Display display = Display.getCurrent();
			Widget widget = (Widget) invokeMethod(Display.class, display,
					"findWidget", new Object[] { idValue }); 
			if (!(widget instanceof Shell)) {
				return;
			}
			Shell shell = (Shell) widget;
			for (MWindow mwin : app.getChildren()) {
				if (mwin.getWidget() == shell) {
					runCommand("org.eclipse.ui.ToggleCoolbarAction"); 
				}
			}
		} catch (Exception e) {