Bug 29170 False error feedback from "Show in package explorer"
Build 20030107 1. Open a .java file in the Java editor. 2. Click "Collapse All" in the packages view to collapse the tree. 3. Right click on the top-level type in the Outline view and choose "Show in Package Explorer" 4. The packages view correctly expands to the selected type, but an error dialog pops up: Title: "Show in Package Explorer" Message: "Couldn't reveal the selected element in Package Explorer. May be the element is filtered out." This happens any time the tree needs to be expanded to reveal a type.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/packageview/PackageExplorerPart.java
private PackageExplorerLabelProvider fLabelProvider;	
	
	/* (non-Javadoc)
	 * Method declared on IViewPart.
	 */
	public void init(IViewSite site, IMemento memento) throws PartInitException {
		super.init(site, memento);
		fMemento= memento;
		restoreLayoutState(memento);
	}
	private void restoreLayoutState(IMemento memento) {
		Integer state= null;
		if (memento != null)
			state= memento.getInteger(TAG_LAYOUT);
		
		if(state == null) {
			IPreferenceStore store= JavaPlugin.getDefault().getPreferenceStore();
			state= new Integer(store.getInt(TAG_LAYOUT));
		}
		if (state.intValue() == FLAT_LAYOUT)
			fIsCurrentLayoutFlat= true;
		else if (state.intValue() == HIERARCHICAL_LAYOUT)
			fIsCurrentLayoutFlat= false;
		else
			fIsCurrentLayoutFlat= true;
	}
	
	/**
	 * Returns the package explorer part of the active perspective. If 
	 * there isn't any package explorer part <code>null</code> is returned.