Bug 343295 Maximize throws NPE if no editor area or perspectives
java.lang.NullPointerException at org.eclipse.e4.ui.internal.workbench.ModelServiceImpl.match(ModelServiceImpl.java:63) at org.eclipse.e4.ui.internal.workbench.ModelServiceImpl.findElementsRecursive(ModelServiceImpl.java:86) at org.eclipse.e4.ui.internal.workbench.ModelServiceImpl.findElements(ModelServiceImpl.java:165) at org.eclipse.e4.ui.internal.workbench.ModelServiceImpl.find(ModelServiceImpl.java:201) at org.eclipse.e4.ui.workbench.addons.minmax.MinMaxAddon.maximize(MinMaxAddon.java:421) at org.eclipse.e4.ui.workbench.addons.minmax.MinMaxAddon$5.handleEvent(MinMaxAddon.java:246) at org.eclipse.e4.ui.services.internal.events.UIEventHandler$1.run(UIEventHandler.java:41) at org.eclipse.swt.widgets.Synchronizer.syncExec(Synchronizer.java:179) at org.eclipse.swt.widgets.Display.syncExec(Display.java:4681) at org.eclipse.e4.ui.internal.workbench.swt.E4Application$1.syncExec(E4Application.java:182) at org.eclipse.e4.ui.services.internal.events.UIEventHandler.handleEvent(UIEventHandler.java:38) at org.eclipse.equinox.internal.event.EventHandlerWrapper.handleEvent(EventHandlerWrapper.java:197) at org.eclipse.equinox.internal.event.EventHandlerTracker.dispatchEvent(EventHandlerTracker.java:197) at org.eclipse.equinox.internal.event.EventHandlerTracker.dispatchEvent(EventHandlerTracker.java:1) at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:230) at org.eclipse.osgi.framework.eventmgr.ListenerQueue.dispatchEventSynchronous(ListenerQueue.java:148) at org.eclipse.equinox.internal.event.EventAdminImpl.dispatchEvent(EventAdminImpl.java:135) at org.eclipse.equinox.internal.event.EventAdminImpl.sendEvent(EventAdminImpl.java:78) at org.eclipse.equinox.internal.event.EventComponent.sendEvent(EventComponent.java:39) at org.eclipse.e4.ui.services.internal.events.EventBroker.send(EventBroker.java:81) at org.eclipse.e4.ui.internal.workbench.UIEventPublisher.notifyChanged(UIEventPublisher.java:58) at org.eclipse.emf.common.notify.impl.BasicNotifierImpl.eNotify(BasicNotifierImpl.java:380) at org.eclipse.emf.ecore.util.EcoreEList.dispatchNotification(EcoreEList.java:255) at org.eclipse.emf.common.notify.impl.NotifyingListImpl.addUnique(NotifyingListImpl.java:310) at org.eclipse.emf.common.util.AbstractEList.add(AbstractEList.java:307) at org.eclipse.e4.ui.workbench.addons.minmax.MinMaxAddon.setState(MinMaxAddon.java:173) at org.eclipse.e4.ui.workbench.addons.minmax.MinMaxAddon.access$0(MinMaxAddon.java:159) at org.eclipse.e4.ui.workbench.addons.minmax.MinMaxAddon$1.maximize(MinMaxAddon.java:87) at org.eclipse.e4.ui.widgets.CTabFolder.onSelection(CTabFolder.java:1915) at org.eclipse.e4.ui.widgets.CTabFolder$1.handleEvent(CTabFolder.java:275)
bundles/org.eclipse.e4.ui.workbench.addons.swt/src/org/eclipse/e4/ui/workbench/addons/minmax/MinMaxAddon.java
if (bar.getWidget() == null) {
				
				bar.setToBeRendered(true);
				
				context.get(IPresentationEngine.class)
						.createGui(bar, winShell, window.getContext());
			}
		} else {
			
			MUIElement parent = trimStack.getParent();
			if (parent.getWidget() == null) {
				
				parent.setToBeRendered(true);
				
				context.get(IPresentationEngine.class).createGui(parent, winShell,
						window.getContext());
			}
			trimStack.setToBeRendered(true);
		}
	}
	private String getMinimizedElementSuffix(MUIElement element) {
		String id = ID_SUFFIX;
		MPerspective persp = modelService.getPerspectiveFor(element);
		if (persp != null) {
			id = '(' + persp.getElementId() + ')';
		}
		return id;
	}
}