Bug 203974 [Markers] [Markers] markers view: Twistis on configure filter dialog not correctly laid out
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/provisional/views/markers/FiltersConfigurationDialog.java
((GroupFilterConfigurationArea) area)
							.applyToGroup(selectedFilterGroup);
				area.apply(selectedFilterGroup.getFilter(area.getField()));
			}
		}
		super.okPressed();
	}
	/**
	 * Remove the filters in selection.
	 * 
	 * @param selection
	 */
	protected void removeFilters(ISelection selection) {
		filterGroups.remove(((IStructuredSelection) selection).getFirstElement());
		filtersList.refresh();
	}
	/**
	 * Set the filter that is being worked on.
	 * 
	 * @param markerFieldFilterGroup
	 */
	void setSelectedFilter(MarkerFieldFilterGroup markerFieldFilterGroup) {
		removeButton
				.setEnabled(!(markerFieldFilterGroup == null || markerFieldFilterGroup
						.isSystem()));
		MarkerFieldFilterGroup old = selectedFilterGroup;
		selectedFilterGroup = markerFieldFilterGroup;
		if (old != null)
			scopeArea.applyToGroup(old);
		if (selectedFilterGroup == null) {