public NSWindowController uniqueWindowControllerForClass(Class @class)
{
if (!(singleWindows != null))
singleWindows = NSMutableDictionary.dictionaryWithCapacity(5);
NSWindowController w = singleWindows.objectForKey(@class);
if (!(w != null))
{
w = @class.alloc().init();
singleWindows.setObject(w) forKey(@class);
}
return w;
}
