Bug 25827 Disposing of MemberFilterActionGroup
Build 2.0.2 and 2.1 When investigating an editor memory leak PR we found out that this group has a dispose method which is never called. When we then called from the editor it throw an exeption (viewer was disposed). Don't know if the group really needs dispose() if so it should get called.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/typehierarchy/TypeHierarchyViewPart.java
import org.eclipse.jdt.internal.ui.dnd.TransferDragSourceListener;
import org.eclipse.jdt.internal.ui.dnd.TransferDropTargetListener;
import org.eclipse.jdt.internal.ui.javaeditor.EditorUtility;
import org.eclipse.jdt.internal.ui.packageview.SelectionTransferDragAdapter;
import org.eclipse.jdt.internal.ui.preferences.JavaBasePreferencePage;
import org.eclipse.jdt.internal.ui.preferences.MembersOrderPreferencePage;
import org.eclipse.jdt.internal.ui.util.BusyIndicatorRunnableContext;
import org.eclipse.jdt.internal.ui.viewsupport.IViewPartInputProvider;
import org.eclipse.jdt.internal.ui.viewsupport.JavaElementLabels;
import org.eclipse.jdt.internal.ui.viewsupport.JavaUILabelProvider;
import org.eclipse.jdt.internal.ui.viewsupport.StatusBarUpdater;
/**
 * view showing the supertypes/subtypes of its input.
 */
public class TypeHierarchyViewPart extends ViewPart implements ITypeHierarchyViewPart, IViewPartInputProvider {
	
	public static final int VIEW_ID_TYPE= 2;
	public static final int VIEW_ID_SUPER= 0;
	public static final int VIEW_ID_SUB= 1;
	
	public static final int VIEW_ORIENTATION_VERTICAL= 0;
	public static final int VIEW_ORIENTATION_HORIZONTAL= 1;
	public static final int VIEW_ORIENTATION_SINGLE= 2;
	
	private static final String DIALOGSTORE_HIERARCHYVIEW= "TypeHierarchyViewPart.hierarchyview";	 
	private static final String DIALOGSTORE_VIEWORIENTATION= "TypeHierarchyViewPart.orientation";	 
	private static final String TAG_INPUT= "input"; 
	private static final String TAG_VIEW= "view"; 
	private static final String TAG_ORIENTATION= "orientation"; 
	private static final String TAG_RATIO= "ratio";