//订阅/注册事件
public void add_event_listener(string name, on_event_handler handler)
{
if (this.event_listeners.ContainsKey(name))
{
this.event_listeners[name] += handler;
}
else
{
this.event_listeners.Add(name, handler);
}
}
public void remove_event_listener(string name, on_event_handler handler)
{
if (!this.event_listeners.ContainsKey(name))
{
return;
}
this.event_listeners[name] -= handler;
if (this.event_listeners[name] == null)
{
this.event_listeners.Remove(name);
}
}
