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
IDEWorkbenchMessages.ResourceFilterPage_downButtonLabel,
					null));
			data = new GridData(SWT.FILL, SWT.FILL, false, false);
			downButton.setLayoutData(data);
			setButtonDimensionHint(downButton);
			downButton.addSelectionListener(new SelectionListener() {
				public void widgetDefaultSelected(SelectionEvent e) {
				}
				public void widgetSelected(SelectionEvent e) {
					handleDown();
				}
			});
		}
	}
	private void refreshEnablement() {
		addButton.setEnabled(true);
		ISelection selection = filterView.getSelection();
		IStructuredSelection structuredSelection = null;
		if (selection instanceof IStructuredSelection)
			structuredSelection = ((IStructuredSelection) selection);
		removeButton.setEnabled(structuredSelection != null
				&& structuredSelection.size() > 0);
		editButton.setEnabled(structuredSelection != null
				&& structuredSelection.size() == 1);
		if (upButton != null)
			upButton.setEnabled(structuredSelection != null
					&& (structuredSelection.size() > 0)
					&& !isFirst(structuredSelection.getFirstElement()));
		if (downButton != null)
			downButton.setEnabled(structuredSelection != null