Bug 307163 DBCS3.6: Resource Filter UI didn't restore grouped filters
Build Identifier: I20100313-1044 When reopening Resource Filters property editor after adding several filters under either of top-level AND/OR/NOT group, none of children in such top-level group filter is shown while settings are actually persisted in .project. Reproducible: Always Steps to Reproduce: 1. Create a project and add some files and folders. 2. Add resource filters to the project or the folder just created, and filters are grouped by AND/OR/NOT. 3. Ensure filters are active for exiting resources under the project. 4. Reopen "Resource Fileters" property editor 5. Verify the filters added in Step 2 are restored. Problem: None of child filters under top-level AND/OR/NOT group is shown Expected: All nested child filters under top-level AND/OR/NOT group are totally shown. Note that persistent entries for all filters are actually existing in a .project file.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/ide/dialogs/ResourceFilterGroup.java
protected FilterCopyDrop(Viewer viewer) {
			super(viewer);
		}
		/*
		 * (non-Javadoc)
		 * 
		 * @see
		 * org.eclipse.jface.viewers.ViewerDropAdapter#performDrop(java.lang
		 * .Object)
		 */
		public boolean performDrop(Object data) {
			Object target = getCurrentTarget();
			if (target == null)
				target = filters;
			FilterCopy[] toDrop = (FilterCopy[]) data;
			if (target instanceof FilterCopy) {
				for (int i = 0; i < toDrop.length; i++)
					if (toDrop[i].equals(target)
							|| ((FilterCopy) target).hasParent(toDrop[i]))