/// <summary>
/// Extracts the event handler details such as event filter.
/// </summary>
/// <param name="eventHandler">The event handler delegate.</param>
/// <param name="eventFilter">The event filter.</param>
private void ExtractEventHandlerDetails(ref Delegate eventHandler, ref IEventFilter eventFilter)
{
if (eventHandler == null || eventHandler.Method == null)
{
return;
}
// handle attached event filters, if any
if (eventHandler.Target is IFilteredEventHandler)
{
var filtered = eventHandler.Target as IFilteredEventHandler;
eventHandler = filtered.EventHandler;
eventFilter = filtered.EventFilter;
}
// handle special case: session-bound events
var parameters = eventHandler.Method.GetParameters();
if (parameters.Length == 2 && typeof(SessionEventArgs).IsAssignableFrom(parameters[1].ParameterType))
{
// if SessionEventFilter is already attached, do not create a new filter
if (eventFilter == null || !eventFilter.Contains <SessionEventFilter>())
{
var sessionFilter = new SessionEventFilter(_sessionID);
eventFilter = sessionFilter.Combine(eventFilter);
}
}
}
/// <summary>
/// Extracts the event handler details such as event filter.
/// </summary>
/// <param name="eventHandler">The event handler delegate.</param>
/// <param name="eventFilter">The event filter.</param>
private void ExtractEventHandlerDetails(ref Delegate eventHandler, ref IEventFilter eventFilter)
{
if (eventHandler == null || eventHandler.Method == null)
{
return;
}
// handle attached event filters, if any
if (eventHandler.Target is IFilteredEventHandler)
{
var filtered = eventHandler.Target as IFilteredEventHandler;
eventHandler = filtered.EventHandler;
eventFilter = filtered.EventFilter;
}
// handle special case: session-bound events
var parameters = eventHandler.Method.GetParameters();
if (parameters.Length == 2 && typeof(SessionEventArgs).IsAssignableFrom(parameters[1].ParameterType))
{
// if SessionEventFilter is already attached, do not create a new filter
if (eventFilter == null || !eventFilter.Contains<SessionEventFilter>())
{
var sessionFilter = new SessionEventFilter(_sessionID);
eventFilter = sessionFilter.Combine(eventFilter);
}
}
}
