/// <summary>
/// 注册一个事件
/// </summary>
/// <param name="eventName">事件名称</param>
/// <param name="handler">事件句柄</param>
/// <param name="life">在几次后事件会被自动释放</param>
/// <returns>事件句柄</returns>
public IEventHandler Listen(string eventName, Func <object, object> handler, int life = 0)
{
Guard.Requires <ArgumentNullException>(eventName != null);
Guard.Requires <ArgumentNullException>(handler != null);
eventName = Normalize(eventName);
var wildcard = eventName.IndexOf("*") != -1;
var eventHandler = new EventHandler(this, wildcard ? Str.AsteriskWildcard(eventName) : eventName, handler, life);
lock (syncRoot)
{
if (wildcard)
{
SetWildcardListener(eventHandler);
}
else
{
List <EventHandler> handlers;
if (!this.handlers.TryGetValue(eventName, out handlers))
{
this.handlers[eventName] = handlers = new List <EventHandler>();
}
handlers.Add(eventHandler);
}
return(eventHandler);
}
}
/// <summary>
/// 设定通配符事件
/// </summary>
/// <param name="eventName">事件名</param>
/// <param name="execution">事件调用方法</param>
/// <param name="group">事件分组</param>
/// <returns>监听事件</returns>
private IEvent SetupWildcardListen(string eventName, Func <string, object[], object> execution, object group)
{
if (!wildcardListeners.TryGetValue(eventName, out KeyValuePair <Regex, List <IEvent> > listener))
{
wildcardListeners[eventName] = listener =
new KeyValuePair <Regex, List <IEvent> >(new Regex(Str.AsteriskWildcard(eventName)), new List <IEvent>());
}
var output = MakeEvent(eventName, execution, group, true);
listener.Value.Add(output);
return(output);
}
/// <summary>
/// 设定通配符事件
/// </summary>
/// <param name="eventName">事件名</param>
/// <param name="target">事件调用目标</param>
/// <param name="method">事件调用方法</param>
/// <returns>监听事件</returns>
private IEvent SetupWildcardListen(string eventName, object target, MethodInfo method)
{
KeyValuePair <Regex, List <IEvent> > listener;
if (!wildcardListeners.TryGetValue(eventName, out listener))
{
wildcardListeners[eventName] = listener =
new KeyValuePair <Regex, List <IEvent> >(new Regex(Str.AsteriskWildcard(eventName)), new List <IEvent>());
}
var output = MakeEvent(eventName, target, method, true);
listener.Value.Add(output);
return(output);
}