private static void OnEventNameChanged(DependencyObject dependencyObject, DependencyPropertyChangedEventArgs args)
{
EventTriggerBehavior eventTriggerBehavior = (EventTriggerBehavior)dependencyObject;
if (eventTriggerBehavior.AssociatedObject == null || eventTriggerBehavior.resolvedSource == null)
{
return;
}
string eventName = (string)args.OldValue;
string eventName2 = (string)args.NewValue;
eventTriggerBehavior.UnregisterEvent(eventName);
eventTriggerBehavior.RegisterEvent(eventName2);
}
private void RegisterEvent(string eventName)
{
if (string.IsNullOrEmpty(eventName))
{
return;
}
if (!(eventName != "Loaded"))
{
if (!this.isLoadedEventRegistered)
{
FrameworkElement frameworkElement = this.resolvedSource as FrameworkElement;
if (frameworkElement != null && !EventTriggerBehavior.IsElementLoaded(frameworkElement))
{
this.isLoadedEventRegistered = true;
frameworkElement.Loaded += this.OnEvent;
}
}
return;
}
Type type = this.resolvedSource.GetType();
EventInfo info = type.GetRuntimeEvent(this.EventName);
if (info == null)
{
throw new ArgumentException(string.Format(CultureInfo.CurrentCulture, "CannotFindEventNameExceptionMessage", new object[]
{
this.EventName,
type.Name
}));
}
MethodInfo declaredMethod = typeof(EventTriggerBehavior).GetTypeInfo().GetDeclaredMethod("OnEvent");
this.eventHandler = declaredMethod.CreateDelegate(info.EventHandlerType, this);
this.isWindowsRuntimeEvent = EventTriggerBehavior.IsWindowsRuntimeType(info.EventHandlerType);
if (this.isWindowsRuntimeEvent)
{
WindowsRuntimeMarshal.AddEventHandler <Delegate>((Delegate add) => (EventRegistrationToken)info.AddMethod.Invoke(this.resolvedSource, new object[]
{
add
}), delegate(EventRegistrationToken token)
{
info.RemoveMethod.Invoke(this.resolvedSource, new object[]
{
token
});
}, this.eventHandler);
return;
}
info.AddEventHandler(this.resolvedSource, this.eventHandler);
}
private static void OnSourceObjectChanged(DependencyObject dependencyObject, DependencyPropertyChangedEventArgs args)
{
EventTriggerBehavior eventTriggerBehavior = (EventTriggerBehavior)dependencyObject;
eventTriggerBehavior.SetResolvedSource(eventTriggerBehavior.ComputeResolvedSource());
}