}; // class HookedEvent
// Add a handler for a specific event.
internal void AddHandler(EventId eventId, Delegate handler)
{
lock(this)
{
HookedEvent current = hookedEvents;
while(current != null)
{
if(current.eventId == eventId)
{
current.handler =
Delegate.Combine(current.handler, handler);
return;
}
current = current.next;
}
hookedEvents = new HookedEvent
(eventId, handler, hookedEvents);
}
}
// Remove a handler from a specific event.
internal void RemoveHandler(EventId eventId, Delegate handler)
{
lock(this)
{
HookedEvent current = hookedEvents;
HookedEvent prev = null;
while(current != null)
{
if(current.eventId == eventId)
{
current.handler =
Delegate.Remove(current.handler, handler);
if(current.handler == null)
{
if(prev != null)
{
prev.next = current.next;
}
else
{
hookedEvents = current.next;
}
}
return;
}
prev = current;
current = current.next;
}
}
}
public HookedEvent(EventId eventId, Delegate handler,
HookedEvent next)
{
this.eventId = eventId;
this.handler = handler;
this.next = next;
}