// TBD is this the best method?
// TBD this should be a general utility method somewhere in the fragment
private IWorkbenchPartReference toPartRef(MPart part) {
if (part == null) return null;
Object impl = part.getObject();
if (!(impl instanceof IWorkbenchPart)) return null;
PartSite site = (PartSite) ((IWorkbenchPart) impl).getSite();
return site.getPartReference();
}
// TBD default hidden/shown state
private void changeVisibility(MPart oldPart, MPart newPart) {
// TBD old parent vs new parent: should we apply the same logic to both?
// if parent was a stack: hide the previously active part
MElementContainer oldParent = oldPart.getParent();
if (oldParent instanceof MViewStack || oldParent instanceof MEditorStack)
visiblityChange(oldPart, false);
// show new part
visiblityChange(newPart, true);
}