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/javaeditor/JavaOutlinePage.java
import org.eclipse.jdt.ui.actions.ShowActionGroup;
import org.eclipse.jdt.internal.ui.IJavaHelpContextIds;
import org.eclipse.jdt.internal.ui.JavaPlugin;
import org.eclipse.jdt.internal.ui.JavaPluginImages;
import org.eclipse.jdt.internal.ui.actions.CompositeActionGroup;
import org.eclipse.jdt.internal.ui.dnd.DelegatingDragAdapter;
import org.eclipse.jdt.internal.ui.dnd.DelegatingDropAdapter;
import org.eclipse.jdt.internal.ui.dnd.LocalSelectionTransfer;
import org.eclipse.jdt.internal.ui.dnd.TransferDragSourceListener;
import org.eclipse.jdt.internal.ui.dnd.TransferDropTargetListener;
import org.eclipse.jdt.internal.ui.packageview.SelectionTransferDragAdapter;
import org.eclipse.jdt.internal.ui.packageview.SelectionTransferDropAdapter;
import org.eclipse.jdt.internal.ui.preferences.MembersOrderPreferencePage;
import org.eclipse.jdt.internal.ui.viewsupport.AppearanceAwareLabelProvider;
import org.eclipse.jdt.internal.ui.viewsupport.JavaElementLabels;
import org.eclipse.jdt.internal.ui.viewsupport.StatusBarUpdater;
/**
 * The content outline page of the Java editor. The viewer implements a proprietary
 * update mechanism based on Java model deltas. It does not react on domain changes.
 * It is specified to show the content of ICompilationUnits and IClassFiles.
 * Pulishes its context menu under <code>JavaPlugin.getDefault().getPluginId() + ".outline"</code>.
 */
class JavaOutlinePage extends Page implements IContentOutlinePage {
			static Object[] NO_CHILDREN= new Object[0];
   
			/**
			 * The element change listener of the java outline viewer.
			 * @see IElementChangedListener
			 */
			class ElementChangedListener implements IElementChangedListener {