Bug 81421 Closing a project with open editors leaves stale elements in Package Explorer's working set layout
I20041216-0800 Closing a project with open editors leaves stale elements in Package Explorer's working sets mode. This only affects CUs not normal resources.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/workingsets/HistoryWorkingSetUpdater.java
}
				}
				IResourceDelta[] resourceDeltas= delta.getResourceDeltas();
				if (resourceDeltas != null) {
					for (int i= 0; i < resourceDeltas.length; i++) {
						processDelta(resourceDeltas[i]);
					}
				}
			}
			private void processDelta(IResourceDelta outerDelta) {
				try {
					outerDelta.accept(new IResourceDeltaVisitor() {
						public boolean visit(IResourceDelta delta) throws CoreException {
							IResource resource= delta.getResource();
							if (resource.getType() != IResource.FILE)
								return true;
							IFile file= (IFile)resource;
							if ((delta.getKind() & IResourceDelta.CHANGED) != 0) {
								if ((delta.getFlags() & IResourceDelta.CONTENT) != 0) {
									elementSaved(file);
								}
							} else if ((delta.getKind() & IResourceDelta.REMOVED) != 0) {
								if ((delta.getFlags() & IResourceDelta.MOVED_TO) != 0) {
									IFile newFile= ResourcesPlugin.getWorkspace().getRoot().getFile(delta.getMovedToPath());
									if (!newFile.exists()) {
										elementRemoved(file);
									} else {
										elementMoved(file, newFile);
									}
								} else {