Bug 63400 elements not removed from hierarchical search
20040520 Ensure that you are use the hierarchical presentation for search. 1. Do a search with several hits: references to toString, or JavaCore, or ... 2. Remove one of the leaf elements from the list (one method or type). The count of search items decreases, however, the view is not updated. When I remove the last element from the package, the entire package is removed (but not before)
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/search/LevelTreeContentProvider.java
private Map fChildrenMap;
	private StandardJavaElementContentProvider fContentProvider;
	
	public static final int LEVEL_TYPE= 1;
	public static final int LEVEL_FILE= 2;
	public static final int LEVEL_PACKAGE= 3;
	public static final int LEVEL_PROJECT= 4;
	
	private static int[][] JAVA_ELEMENT_TYPES= {{IJavaElement.TYPE},
			{IJavaElement.CLASS_FILE, IJavaElement.COMPILATION_UNIT},
			{IJavaElement.PACKAGE_FRAGMENT},
			{IJavaElement.JAVA_PROJECT, IJavaElement.PACKAGE_FRAGMENT_ROOT},
			{IJavaElement.JAVA_MODEL}};
	private static int[][] RESOURCE_TYPES= {
			{}, 
			{IResource.FILE},
			{IResource.FOLDER}, 
			{IResource.PROJECT}, 
			{IResource.ROOT}};
	
	private static final int MAX_LEVEL= JAVA_ELEMENT_TYPES.length - 1;
	private int fCurrentLevel;
	static class FastJavaElementProvider extends StandardJavaElementContentProvider {