/// <summary>
/// Invoke handler method with associated dispatcher
/// </summary>
/// <param name="sender">Sender of event</param>
/// <param name="args">Arguments</param>
/// <remarks>
/// Only invoke handlers method if.
/// a) Subscriber is still alive (not claimed by GC)
/// b) Subscriber thread is alive
/// </remarks>
public void Invoke(Dispatcher currentDispatcher, object sender, EventArgs args)
{
// Obtaining strong refereces
object target = this.Target;
Dispatcher dispatcher = this.Dispatcher;
if (currentDispatcher.Equals(dispatcher))
{
// Handlers is subscribed in current thread
this.handlerInfo.Invoke(target, new object[] { sender, args });
}
else if (dispatcher.Thread.GetApartmentState() == ApartmentState.STA)
{
// Handlers is subscribed in UI thread
// Only handles for UI controls should be called in thread own thread
// otherwise non-UI threads may be in lock wait state
dispatcher.Invoke(new Action(() => this.handlerInfo.Invoke(target, new object[] { sender, args })), null);
}
else
{
// If thread is not marked with STA then its handlers can be called from other threads
this.handlerInfo.Invoke(target, new object[] { sender, args });
}
}
