Bug 54096 deleting elements in the outline asks for confirmation twice
i20040304 Deleting Java outline elements is behaving in a weird way in this build. I have a Java source open. I select some methods in the Outline view, and press <Del>. A dialog opens saying "Are you sure you want to delete these <#elems> elements?". I say "Yes", but the dialog opens for the second time. And while the dialog is showing up, the elements are removed from the outline. Of course, confirm the second deletion fails because the elemnts are not there anymore.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/packageview/PackageExplorerActionGroup.java
private WorkingSetFilterActionGroup fWorkingSetFilterActionGroup;
	
	private CustomFiltersActionGroup fCustomFiltersActionGroup;	
	private int fLastElement;
	private static final int INIT= 0;
	private static final int RESOURCE= 1;
	private static final int REST= 2; 
 	
	public PackageExplorerActionGroup(PackageExplorerPart part) {
		super();
		fPart= part;
		TreeViewer viewer= part.getViewer();
		
		IPropertyChangeListener workingSetListener= new IPropertyChangeListener() {
			public void propertyChange(PropertyChangeEvent event) {
				doWorkingSetChanged(event);
			}
		};
		
		IWorkbenchPartSite site = fPart.getSite();
		Shell shell= site.getShell();
		ISelectionProvider provider= site.getSelectionProvider();
		IStructuredSelection selection= (IStructuredSelection) provider.getSelection();
		setGroups(new ActionGroup[] {
			new NewWizardsActionGroup(site),
			fNavigateActionGroup= new NavigateActionGroup(fPart), 
			fCCPActionGroup= new CCPActionGroup(fPart),
			new GenerateActionGroup(fPart), 
			new RefactorActionGroup(fPart),
			new ImportActionGroup(fPart),