public void RemoveListener <T>(int sourceId, EventHandler <T> listener) where T : EventArgs
{
var eventType = typeof(T);
var handlerKey = new SingleHandlerKey(sourceId, eventType, listener);
EventHandler internalDelegate;
if (_specificLookup.TryGetValue(handlerKey, out internalDelegate))
{
var eventKey = new SingleEventKey(sourceId, eventType);
EventHandler invoker;
if (_specificDelegates.TryGetValue(eventKey, out invoker))
{
invoker -= internalDelegate;
if (invoker == null)
{
_specificDelegates.Remove(eventKey);
}
else
{
_specificDelegates[eventKey] = invoker;
}
}
_specificLookup.Remove(handlerKey);
}
}
// TODO: Maybe instead of sourceId take object source and store object.GetHashCode()
public void AddListener <T>(int sourceId, EventHandler <T> listener) where T : EventArgs
{
var eventType = typeof(T);
var handlerKey = new SingleHandlerKey(sourceId, eventType, listener);
if (_specificLookup.ContainsKey(handlerKey))
{
return;
}
EventHandler internalDelegate = (s, e) => listener(s, (T)e);
_specificLookup[handlerKey] = internalDelegate;
var eventKey = new SingleEventKey(sourceId, eventType);
EventHandler invoker;
if (_specificDelegates.TryGetValue(eventKey, out invoker))
{
invoker += internalDelegate;
_specificDelegates[eventKey] = invoker;
}
else
{
_specificDelegates[eventKey] = internalDelegate;
}
}
protected bool Equals(SingleEventKey other)
{
return(_id == other._id && _eventType == other._eventType);
}
