/// <summary>
/// Raises the attached GiveFeedback event on a element.
/// </summary>
/// <param name="element">The element to raise the event on.</param>
/// <param name="args">Information about the event.</param>
internal static void OnGiveFeedback(this DependencyObject element, SW.GiveFeedbackEventArgs args)
{
if (!args.Handled)
{
IAcceptDrop acceptDrop = element as IAcceptDrop;
if (acceptDrop != null)
{
acceptDrop.OnGiveFeedback(args);
}
}
ExtendedRoutedEventHandlerCollection <GiveFeedbackEventHandler, SW.GiveFeedbackEventArgs> handlers = element.GetGiveFeedbackHandlers();
if (handlers != null)
{
handlers.Raise(args);
}
}
/// <summary>
/// Raises the GiveFeedback event on the drag source.
/// </summary>
/// <param name="args">Information about the GiveFeedback event.
/// </param>
private void OnDragSourceGiveFeedback(SW.DragEventArgs args)
{
SW.DragDropEffects effects = _allowedEffects;
if (args.Handled)
{
effects = _allowedEffects & args.Effects;
}
else
{
effects = GetDragDropEffects(_allowedEffects);
}
_lastGiveFeedbackEventArgs =
new SW.GiveFeedbackEventArgs()
{
Effects = effects,
OriginalSource = _dragSource,
};
_dragSource.RaiseRoutedEvent(
_lastGiveFeedbackEventArgs,
(accept, e) => accept.OnGiveFeedback(e));
}
