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
d.asyncExec(r);
	}
	private ISelection convertSelection(ISelection s) {
		if (!(s instanceof IStructuredSelection))
			return s;
			
		Object[] elements= ((StructuredSelection)s).toArray();
		if (!containsResources(elements))
			return s;
				
		for (int i= 0; i < elements.length; i++) {
			Object o= elements[i];
			if (o instanceof IResource) {
				IJavaElement jElement= JavaCore.create((IResource)o);
				if (jElement != null) 
					elements[i]= jElement;
			}
		}
		
		return new StructuredSelection(elements);
	}
	
	private boolean containsResources(Object[] elements) {
		for (int i = 0; i < elements.length; i++) {
			if (elements[i] instanceof IResource)
				return true;
		}
		return false;
	}