Bug 11109 F1 no longer works in Packages view
new context ID?
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/packageview/PackageExplorerPart.java
private JavaElementPatternFilter fPatternFilter= new JavaElementPatternFilter();
	private LibraryFilter fLibraryFilter= new LibraryFilter();
	private BinaryProjectFilter fBinaryFilter= new BinaryProjectFilter();
	private WorkingSetFilter fWorkingSetFilter= new WorkingSetFilter();
	
	private MemberFilterActionGroup fMemberFilterActionGroup;
	private ProblemTreeViewer fViewer; 
	private StandardJavaUILabelProvider fJavaElementLabelProvider;
	private PackagesFrameSource fFrameSource;
	private FrameList fFrameList;
	private ContextMenuGroup[] fStandardGroups;
	private Menu fContextMenu;		
	private OpenResourceAction fOpenCUAction;
	private Action fOpenToAction;
	private Action fShowTypeHierarchyAction;
	private Action fShowNavigatorAction;
	private PropertyDialogAction fPropertyDialogAction;
 	private RefactoringAction fDeleteAction;
 	private RefreshAction fRefreshAction;
 	private BackAction fBackAction;
	private ForwardAction fForwardAction;
	private GoIntoAction fZoomInAction;
	private UpAction fUpAction;
	private GotoTypeAction fGotoTypeAction;
	private GotoPackageAction fGotoPackageAction;
	private AddBookmarkAction fAddBookmarkAction;
	
 	private FilterSelectionAction fFilterAction;
 	private ShowLibrariesAction fShowLibrariesAction;
	private ShowBinariesAction fShowBinariesAction;