/// <summary>
/// 注册一个signal监听函数，自注册后释放的signal会触发该监听函数
/// </summary>
/// <typeparam name="T">signal类型</typeparam>
/// <param name="action">监听函数</param>
/// <param name="times">触发次数，负数表示无限触发</param>
/// <returns>handler</returns>
public SignalHandler <T> OnSignal <T>(Action <T> action, int times = -1)
{
var handler = new SignalHandler <T>(this, action, times);
handlers.Add(handler);
manager.AddHandler(handler);
return(handler);
}
private void AddHandler(SignalHandler handler)
{
if (!dictionary.TryGetValue(handler.SignalType, out var handlers))
{
handlers = new SignalHandlers();
dictionary.Add(handler.SignalType, handlers);
}
handlers.List.Add(handler);
}
private void RemoveHandler(SignalHandler handler)
{
if (!dictionary.TryGetValue(handler.SignalType, out var handlers))
{
return;
}
if (callStack > 0)
{
handlers.Delete = true;
return;
}
handlers.List.Remove(handler);
}
internal void RemoveHandler(SignalHandler handler)
{
handlers.Remove(handler);
manager.RemoveHandler(handler);
}
