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
return false;
			}
			for (int i = 0; i < toDrop.length; i++) {
				if (target instanceof Filters)
					filters.add(toDrop[i]);
				if (target instanceof FilterCopy)
					((FilterCopy) target).addChild(toDrop[i]);
				filterView.refresh();
				filterView.reveal(toDrop[i]);
			}
			return true;
		}
		/*
		 * (non-Javadoc)
		 * 
		 * @see
		 * org.eclipse.jface.viewers.ViewerDropAdapter#validateDrop(java.lang
		 * .Object, int, org.eclipse.swt.dnd.TransferData)
		 */
		public boolean validateDrop(Object target, int operation,
				TransferData transferType) {
			if (filterCopyTransfer.isSupportedType(transferType)) {
				if (target instanceof FilterCopy)
					return ((FilterCopy) target).canAcceptDrop();
				return true;
			}
			return false;
		}
	}
	class FilterCopyDrag implements DragSourceListener {