【C#】Event事件(基础) 工具类

格式都差不多，属于单播事件

/*
*自定义委托，指定无返回值的方法(函数)【用无返回值做代表-_-】
*/
public delegate void CallBack();
public delegate void CallBack<T>(T arg);
public delegate void CallBack<T, X>(T arg1, X arg2);
public delegate void CallBack<T, X, Y>(T arg1, X arg2, Y arg3);

/*
*事件钥匙【自行添加钥匙】
*/
public enum EventDefine
{
None,
}

using System;
using System.Collections.Generic;

/*
*事件控制中心，处理事件添加监听、移除、安全校验、触发调用
*/
public class EventCenter
{
//事件存储集合 Dictionary<事件钥匙，委托类型>
private static Dictionary<EventDefine, Delegate> m_EventTable = new Dictionary<EventDefine, Delegate>();

//添加事件时安全校验，对事件类型进行判断
private static void OnListenerAdding(EventDefine eventType, Delegate callBack)
{
if (!m_EventTable.ContainsKey(eventType))
{
m_EventTable.Add(eventType, null);
}
Delegate d = m_EventTable[eventType];
if (d != null && d.GetType() != callBack.GetType())
{
throw new Exception(string.Format("尝试为事件{0}添加不同类型的委托，当前事件所对应的委托是{1}，要添加的委托类型为{2}", eventType, d.GetType(), callBack.GetType()));
}
}

//移除指定事件的指定委托时，进行安全校验
private static void OnListenerRemoving(EventDefine eventType, Delegate callBack)
{
if (m_EventTable.ContainsKey(eventType))
{
Delegate d = m_EventTable[eventType];
if (d == null)
{
throw new Exception(string.Format("移除监听错误：事件{0}没有对应的委托", eventType));
}
else if (d.GetType() != callBack.GetType())
{
throw new Exception(string.Format("移除监听错误：尝试为事件{0}移除不同类型的委托，当前委托类型为{1}，要移除的委托类型为{2}", eventType, d.GetType(), callBack.GetType()));
}
}
else
{
throw new Exception(string.Format("移除监听错误：没有事件码{0}", eventType));
}
}

//移除事件对应的委托后，删除对应的事件
private static void OnListenerRemoved(EventDefine eventType)
{
if (m_EventTable[eventType] == null)
{
m_EventTable.Remove(eventType);
}
}

//添加 委托的方法为无参数的事件监听
public static void AddListener(EventDefine eventType, CallBack callBack)
{
OnListenerAdding(eventType, callBack);
m_EventTable[eventType] = (CallBack)m_EventTable[eventType] + callBack;
}

//添加 委托的方法为一个泛型参数的事件监听
public static void AddListener<T>(EventDefine eventType, CallBack<T> callBack)
{
OnListenerAdding(eventType, callBack);
m_EventTable[eventType] = (CallBack<T>)m_EventTable[eventType] + callBack;
}

//添加 委托的方法为俩个泛型参数的事件监听
public static void AddListener<T, X>(EventDefine eventType, CallBack<T, X> callBack)
{
OnListenerAdding(eventType, callBack);
m_EventTable[eventType] = (CallBack<T, X>)m_EventTable[eventType] + callBack;
}

//添加 委托的方法为三个泛型参数的事件监听
public static void AddListener<T, X, Y>(EventDefine eventType, CallBack<T, X, Y> callBack)
{
OnListenerAdding(eventType, callBack);
m_EventTable[eventType] = (CallBack<T, X, Y>)m_EventTable[eventType] + callBack;
}

//移除 委托的方法为无参数的事件监听
public static void RemoveListener(EventDefine eventType, CallBack callBack)
{
OnListenerRemoving(eventType, callBack);
m_EventTable[eventType] = (CallBack)m_EventTable[eventType] - callBack;
OnListenerRemoved(eventType);
}

//移除 委托的方法为一个泛型参数的事件监听
public static void RemoveListener<T>(EventDefine eventType, CallBack<T> callBack)
{
OnListenerRemoving(eventType, callBack);
m_EventTable[eventType] = (CallBack<T>)m_EventTable[eventType] - callBack;
OnListenerRemoved(eventType);
}

//移除 委托的方法为两个泛型参数的事件监听
public static void RemoveListener<T, X>(EventDefine eventType, CallBack<T, X> callBack)
{
OnListenerRemoving(eventType, callBack);
m_EventTable[eventType] = (CallBack<T, X>)m_EventTable[eventType] - callBack;
OnListenerRemoved(eventType);
}

//移除 委托的方法为三个泛型参数的事件监听
public static void RemoveListener<T, X, Y>(EventDefine eventType, CallBack<T, X, Y> callBack)
{
OnListenerRemoving(eventType, callBack);
m_EventTable[eventType] = (CallBack<T, X, Y>)m_EventTable[eventType] - callBack;
OnListenerRemoved(eventType);
}

//触发(广播) 委托类型为无参数的事件
public static void Broadcast(EventDefine eventType)
{
Delegate d;
if (m_EventTable.TryGetValue(eventType, out d))
{
CallBack callBack = d as CallBack;
if (callBack != null)
{
callBack();
}
else
{
throw new Exception(string.Format("广播事件错误：事件{0}对应委托具有不同的类型", eventType));
}
}
}

//触发(广播) 委托类型为一个泛型参数的事件
public static void Broadcast<T>(EventDefine eventType, T arg)
{
Delegate d;
if (m_EventTable.TryGetValue(eventType, out d))
{
CallBack<T> callBack = d as CallBack<T>;
if (callBack != null)
{
callBack(arg);
}
else
{
throw new Exception(string.Format("广播事件错误：事件{0}对应委托具有不同的类型", eventType));
}
}
}

//触发(广播) 委托类型为两个泛型参数的事件
public static void Broadcast<T, X>(EventDefine eventType, T arg1, X arg2)
{
Delegate d;
if (m_EventTable.TryGetValue(eventType, out d))
{
CallBack<T, X> callBack = d as CallBack<T, X>;
if (callBack != null)
{
callBack(arg1, arg2);
}
else
{
throw new Exception(string.Format("广播事件错误：事件{0}对应委托具有不同的类型", eventType));
}
}
}

//触发(广播) 委托类型为三个泛型参数的事件
public static void Broadcast<T, X, Y>(EventDefine eventType, T arg1, X arg2, Y arg3)
{
Delegate d;
if (m_EventTable.TryGetValue(eventType, out d))
{
CallBack<T, X, Y> callBack = d as CallBack<T, X, Y>;
if (callBack != null)
{
callBack(arg1, arg2, arg3);
}
else
{
throw new Exception(string.Format("广播事件错误：事件{0}对应委托具有不同的类型", eventType));
}
}
}

}