Bug 67814 Show In > Package Explorer doesn't ask for removal of last filter [package explorer]
200406180010; Not a dup of 66646. 'Show In > Package Explorer' doesn't ask for removal of a filter iff there's only a single filter set. Steps: - Disable all filters in Package Explorer, except for 'Referenced Libraries'. - Open editor for java.util.Vector - Navigate > Show In > Package Explorer => fails, doesn't ask for filter removal. Works iff at least one other filter (which would not filter the element) is active.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/packageview/PackageExplorerPart.java
ns.add(project);
						changed= true;
					}
				} else if (element instanceof IProject) {
					IProject project= (IProject)element;
					if (project.isOpen()) {
						IJavaProject jProject= JavaCore.create(project);
						if (jProject != null && jProject.exists())
							ns.add(jProject);
							changed= true;
					}
				}
			}
			if (changed) {
				newSelection= new StructuredSelection(ns);
				setSelection(newSelection);
			}
			super.handleInvalidSelection(invalidSelection, newSelection);
		}
		
		/**
		 * {@inheritDoc}
		 */
		protected Object[] addAditionalProblemParents(Object[] elements) {
			if (showWorkingSets()) {
				return fWorkingSetModel.addWorkingSets(elements);
			}
			return elements;
		}