Bug 64897 packages view: not updated when project source folders change [browsing]
RC1 - browsing perspective - smoke test scenario... - import junit.zip into the previously not existing folder 'src' -> packages view shows a number of packages src.junit.framework... with errors - go to the project properties, source page - add 'src' as source folder, accept when asked to remove the project root as source folder - press OK -> the error marks in the packages view are removed -> the packages src... are still visible in the packages view -> they are only removed upon a selection change in the "projects" view
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/browsing/PackagesViewFlatContentProvider.java
final IPackageFragment frag= (IPackageFragment) element;
			if (kind == IJavaElementDelta.REMOVED) {
				removeElement(frag);
			} else if (kind == IJavaElementDelta.ADDED) {
				addElement(frag);
			} else if (kind == IJavaElementDelta.CHANGED) {
				 
				Object toBeRefreshed= element;
				IPackageFragment pkgFragment= (IPackageFragment) element;
				LogicalPackage logicalPkg= findLogicalPackage(pkgFragment);
				
				if (logicalPkg != null)
					toBeRefreshed= findElementToRefresh(logicalPkg);
				else
					toBeRefreshed= findElementToRefresh(pkgFragment);
				postRefresh(toBeRefreshed);
			}
			
			return;
		}
		processAffectedChildren(delta);
	}
	
	
	
	private Object findElementToRefresh(IPackageFragment fragment) {
		if (fViewer.testFindItem(fragment) == null) {
			if(fInputIsProject)
				return fragment.getJavaProject();
			else return fragment.getParent();