Bug 142785 NavigatorSaveablesServices NPEs on shutdown
On Build id: I20060505-1306: The following exception was encountered on shutdown, and encountered multiple times (about 20). I'm not sure I have a scenario that can reproduce this, but there were many more Navigator extensions than base platform (roughly 20). I think by the time this was reached, the Project Explorer had been disposed. !ENTRY org.eclipse.osgi 4 0 2006-05-19 11:21:38.993 !MESSAGE An unexpected runtime error has occurred. !STACK 0 java.lang.NullPointerException at org.eclipse.ui.internal.navigator.NavigatorSaveablesService.computeSaveables(NavigatorSaveablesService.java:216) at org.eclipse.ui.internal.navigator.NavigatorSaveablesService.recomputeSaveablesAndNotify(NavigatorSaveablesService.java:374) at org.eclipse.ui.internal.navigator.NavigatorSaveablesService.handleBundleStopped(NavigatorSaveablesService.java:457) at org.eclipse.ui.internal.navigator.NavigatorSaveablesService.bundleChanged(NavigatorSaveablesService.java:100) at org.eclipse.ui.internal.navigator.NavigatorPlugin$1.bundleChanged(NavigatorPlugin.java:35) at org.eclipse.osgi.framework.internal.core.BundleContextImpl.dispatchEvent(BundleContextImpl.java:1206) at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:189) at org.eclipse.osgi.framework.eventmgr.EventManager$EventThread.run(EventManager.java:291) 11
bundles/org.eclipse.ui.navigator/src/org/eclipse/ui/navigator/CommonViewer.java
return contentService;
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.jface.viewers.AbstractTreeViewer#add(java.lang.Object,
	 *      java.lang.Object[])
	 */
	public void add(Object parentElement, Object[] childElements) {
		
		NavigatorPipelineService pipeDream = (NavigatorPipelineService) contentService
				.getPipelineService();
		PipelinedShapeModification modification = new PipelinedShapeModification(
				parentElement, new ContributorTrackingSet(contentService,
						childElements));
		pipeDream.interceptAdd(modification);
		Object parent = (parentElement == getInput()) ? getInput()
				: modification.getParent();
		super.add(parent, modification.getChildren().toArray());
	}
	/**
	 * <p>
	 * Removals are handled by refreshing the parents of each of the given
	 * elements. The parents are determined via calls ot the contentProvider.
	 * </p>
	 * 
	 * @see org.eclipse.jface.viewers.AbstractTreeViewer#remove(java.lang.Object[])
	 */
	public void remove(Object[] elements) {