public static void RemoveHandler(UIElement element, RoutedEvent routedEvent, Delegate handler)
{
if (element == null)
{
throw new ArgumentNullException("element");
}
if (routedEvent == null)
{
throw new ArgumentNullException("routedEvent");
}
if (handler == null)
{
throw new ArgumentNullException("handler");
}
if (!EventManager.IsLegalHandler(routedEvent, handler))
{
throw new ArgumentException("Illegal Handler type for " + routedEvent.Name + " event");
}
EnsureEventsProperty();
EventHandlerStore events = (EventHandlerStore)element.GetValue(EventsProperty);
if (events == null)
{
return;
}
IntPtr routedEventPtr = BaseComponent.getCPtr(routedEvent).Handle;
long routedEventKey = routedEventPtr.ToInt64();
Delegate eventHandler;
if (!events._binds.TryGetValue(routedEventKey, out eventHandler))
{
return;
}
eventHandler = Delegate.Remove(eventHandler, handler);
events._binds[routedEventKey] = eventHandler;
if (eventHandler == null)
{
Noesis_RoutedEvent_Unbind(_raiseRoutedEvent, events._element, routedEventPtr);
events._binds.Remove(routedEventKey);
}
}
public static void RemoveHandler(UIElement element, string eventId, Delegate handler)
{
if (element == null)
{
throw new ArgumentNullException("element");
}
if (string.IsNullOrEmpty(eventId))
{
throw new ArgumentNullException("eventId");
}
if (handler == null)
{
throw new ArgumentNullException("handler");
}
if (!EventManager.IsLegalHandler(eventId, handler))
{
throw new ArgumentException("Illegal Handler type for " + eventId + " event");
}
EnsureEventsProperty();
EventHandlerStore events = (EventHandlerStore)element.GetValue(EventsProperty);
if (events == null)
{
return;
}
long eventKey = eventId.GetHashCode();
Delegate eventHandler;
if (!events._binds.TryGetValue(eventKey, out eventHandler))
{
return;
}
eventHandler = Delegate.Remove(eventHandler, handler);
if (eventHandler == null)
{
Noesis_Event_Unbind(_raiseEvent, events._element, eventId);
events._binds.Remove(eventKey);
}
}
private static void RaiseEvent(IntPtr cPtrType, IntPtr cPtr, string eventId,
IntPtr sender, IntPtr e)
{
try
{
if (Extend.Initialized)
{
UIElement element = (UIElement)Extend.GetProxy(cPtrType, cPtr, false);
if (element == null)
{
return;
}
EnsureEventsProperty();
EventHandlerStore events = (EventHandlerStore)element.GetValue(EventsProperty);
long eventKey = eventId.GetHashCode();
// check if we are called to unbind the event
if (sender == IntPtr.Zero && e == IntPtr.Zero)
{
events._binds.Remove(eventKey);
return;
}
// invoke handler
Delegate eventHandler;
if (!events._binds.TryGetValue(eventKey, out eventHandler))
{
return;
}
EventManager.InvokeHandler(eventId, eventHandler, sender, e);
}
}
catch (Exception exception)
{
Error.UnhandledException(exception);
}
}
