//
// helper function to add a singleton handler. The passed in handler parameter
// will be stored as the singleton handler.
//
private void AddSingletonHandler(EventHandler handler)
{
Debug.Assert(!Freezable_UsingHandlerList && !Freezable_UsingSingletonHandler);
Debug.Assert(handler != null);
if (HasContextInformation)
{
HandlerContextStorage hps = new HandlerContextStorage();
hps._contextStorage = _contextStorage;
hps._handlerStorage = handler;
_contextStorage = hps;
}
else
{
_contextStorage = handler;
}
Freezable_UsingSingletonHandler = true;
}
/// <summary>
/// Helper function to add a singleton context to the Freezable's storage
/// <param name="context">The DependencyObject to add that references this Freezable.</param>
/// <param name="property">The property of the DependencyObject this object maps to or null if none.</param>
/// </summary>
private void AddSingletonContext(DependencyObject context, DependencyProperty property)
{
Debug.Assert(!Freezable_UsingSingletonContext && !Freezable_UsingContextList);
Debug.Assert(context != null);
if (HasHandlers)
{
HandlerContextStorage hps = new HandlerContextStorage();
hps._handlerStorage = _contextStorage;
hps._contextStorage = context;
_contextStorage = hps;
}
else
{
_contextStorage = context;
}
// set the singleton context property
_property = property;
Freezable_UsingSingletonContext = true;
}