using System;
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using System.Collections.Generic;
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namespace KTGMGemClient
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{
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/// <summary>
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/// 事件中心基类
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/// </summary>
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public class EventBase
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{
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//携带不同参数个数的委托(系统自带的Action 只有四个参数)
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public delegate void CallBack();
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public delegate void CallBack<T>(T arg);
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public delegate void CallBack<T, X>(T arg1, X arg2);
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public delegate void CallBack<T, X, Y>(T arg1, X arg2, Y arg3);
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public delegate void CallBack<T, X, Y, Z>(T arg1, X arg2, Y arg3, Z arg4);
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public delegate void CallBack<T, X, Y, Z, W>(T arg1, X arg2, Y arg3, Z arg4, W arg5);
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//存放各种事件的字典
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protected Dictionary<int, Delegate> m_EventTable = new Dictionary<int, Delegate>();
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public void RemoveAllListener(){
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m_EventTable = new Dictionary<int, Delegate>();
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}
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#region 私有方法
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private void OnListenerAdding(int eventType, Delegate callback)
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{
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if (!m_EventTable.ContainsKey(eventType))
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{
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m_EventTable.Add(eventType, null);
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}
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Delegate del = m_EventTable[eventType];
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//判断该事件码对应的事件类型（参数）是否一样
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if (del != null && del.GetType() != callback.GetType())
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{
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throw new Exception(string.Format("尝试添加事件失败"));
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}
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}
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private void OnListenerRemoving(int eventType, Delegate callback)
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{
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if (m_EventTable.ContainsKey(eventType))
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{
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Delegate del = m_EventTable[eventType];
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if (del == null)
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{
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throw new Exception(string.Format("移除失败，对应事件为空"));
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}
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else if (del.GetType() != callback.GetType())
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{
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throw new Exception(string.Format("移除失败，对应事件不同"));
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}
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}
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else
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{
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throw new Exception(string.Format("移除失败，事件码为空"));
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}
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}
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private void OnListenerRemoved(int eventType)
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{
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if (m_EventTable[eventType] == null)
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{
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m_EventTable.Remove(eventType);
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}
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}
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#endregion
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//下面方法自行扩展
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#region 没有参数，只传回调
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//添加事件
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public void Add(int eventType, CallBack callback)
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{
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OnListenerAdding(eventType, callback);
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m_EventTable[eventType] = (CallBack)m_EventTable[eventType] + callback;
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}
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//移除事件
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public void Remove(int eventType, CallBack callback)
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{
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OnListenerRemoving(eventType, callback);
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m_EventTable[eventType] = (CallBack)m_EventTable[eventType] - callback;
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OnListenerRemoved(eventType);
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}
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//事件的广播
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public void BroadCast(int eventType)
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{
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Delegate del;
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if (m_EventTable.TryGetValue(eventType, out del))
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{
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CallBack callback = del as CallBack;
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if (callback != null)
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{
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callback();
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}
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else
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{
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throw new Exception(string.Format("广播事件错误，对应事件为空"));
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}
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}
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}
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#endregion
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#region 一个参数
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//添加事件
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public void Add<T>(int eventType, CallBack<T> callback)
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{
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OnListenerAdding(eventType, callback);
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m_EventTable[eventType] = (CallBack<T>)m_EventTable[eventType] + callback;
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}
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//移除事件
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public void Remove<T>(int eventType, CallBack<T> callback)
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{
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OnListenerRemoving(eventType, callback);
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m_EventTable[eventType] = (CallBack<T>)m_EventTable[eventType] - callback;
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OnListenerRemoved(eventType);
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}
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//事件的广播
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public void BroadCast<T>(int eventType, T arg)
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{
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Delegate del;
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if (m_EventTable.TryGetValue(eventType, out del))
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{
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CallBack<T> callback = del as CallBack<T>;
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if (callback != null)
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{
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callback(arg);
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}
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else
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{
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throw new Exception(string.Format("广播事件错误，对应事件为空"));
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}
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}
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}
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#endregion
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#region 两个参数
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//添加事件
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public void Add<T, X>(int eventType, CallBack<T, X> callback)
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{
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OnListenerAdding(eventType, callback);
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m_EventTable[eventType] = (CallBack<T, X>)m_EventTable[eventType] + callback;
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}
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//移除事件
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public void Remove<T, X>(int eventType, CallBack<T, X> callback)
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{
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OnListenerRemoving(eventType, callback);
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m_EventTable[eventType] = (CallBack<T, X>)m_EventTable[eventType] - callback;
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OnListenerRemoved(eventType);
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}
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//事件的广播
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public void BroadCast<T, X>(int eventType, T arg1, X arg2)
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{
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Delegate del;
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if (m_EventTable.TryGetValue(eventType, out del))
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{
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CallBack<T, X> callback = del as CallBack<T, X>;
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if (callback != null)
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{
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callback(arg1, arg2);
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}
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else
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{
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throw new Exception(string.Format("广播事件错误，对应事件为空"));
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}
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}
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}
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#endregion
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#region 三个参数
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//添加事件
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public void Add<T, X, Y>(int eventType, CallBack<T, X, Y> callback)
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{
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OnListenerAdding(eventType, callback);
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m_EventTable[eventType] = (CallBack<T, X, Y>)m_EventTable[eventType] + callback;
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}
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//移除事件
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public void Remove<T, X, Y>(int eventType, CallBack<T, X, Y> callback)
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{
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OnListenerRemoving(eventType, callback);
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m_EventTable[eventType] = (CallBack<T, X, Y>)m_EventTable[eventType] - callback;
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OnListenerRemoved(eventType);
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}
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//事件的广播
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public void BroadCast<T, X, Y>(int eventType, T arg1, X arg2, Y arg3)
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{
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Delegate del;
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if (m_EventTable.TryGetValue(eventType, out del))
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{
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CallBack<T, X, Y> callback = del as CallBack<T, X, Y>;
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if (callback != null)
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{
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callback(arg1, arg2, arg3);
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}
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else
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{
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throw new Exception(string.Format("广播事件错误，对应事件为空"));
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}
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}
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}
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#endregion
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#region 四个参数
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//添加事件
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public void Add<T, X, Y, Z>(int eventType, CallBack<T, X, Y, Z> callback)
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{
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OnListenerAdding(eventType, callback);
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m_EventTable[eventType] = (CallBack<T, X, Y, Z>)m_EventTable[eventType] + callback;
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}
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//移除事件
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public void Remove<T, X, Y, Z>(int eventType, CallBack<T, X, Y, Z> callback)
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{
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OnListenerRemoving(eventType, callback);
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m_EventTable[eventType] = (CallBack<T, X, Y, Z>)m_EventTable[eventType] - callback;
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OnListenerRemoved(eventType);
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}
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//事件的广播
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public void BroadCast<T, X, Y, Z>(int eventType, T arg1, X arg2, Y arg3, Z arg4)
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{
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Delegate del;
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if (m_EventTable.TryGetValue(eventType, out del))
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{
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CallBack<T, X, Y, Z> callback = del as CallBack<T, X, Y, Z>;
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if (callback != null)
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{
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callback(arg1, arg2, arg3, arg4);
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}
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else
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{
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throw new Exception(string.Format("广播事件错误，对应事件为空"));
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}
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}
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}
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#endregion
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#region 五个参数
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//添加事件
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public void Add<T, X, Y, Z, W>(int eventType, CallBack<T, X, Y, Z, W> callback)
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{
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OnListenerAdding(eventType, callback);
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m_EventTable[eventType] = (CallBack<T, X, Y, Z, W>)m_EventTable[eventType] + callback;
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}
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//移除事件
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public void Remove<T, X, Y, Z, W>(int eventType, CallBack<T, X, Y, Z, W> callback)
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{
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OnListenerRemoving(eventType, callback);
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m_EventTable[eventType] = (CallBack<T, X, Y, Z, W>)m_EventTable[eventType] - callback;
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OnListenerRemoved(eventType);
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}
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//事件的广播
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public void BroadCast<T, X, Y, Z, W>(int eventType, T arg1, X arg2, Y arg3, Z arg4, W arg5)
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{
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Delegate del;
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if (m_EventTable.TryGetValue(eventType, out del))
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{
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CallBack<T, X, Y, Z, W> callback = del as CallBack<T, X, Y, Z, W>;
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if (callback != null)
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{
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callback(arg1, arg2, arg3, arg4, arg5);
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}
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else
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{
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throw new Exception(string.Format("广播事件错误，对应事件为空"));
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}
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}
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}
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#endregion
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}
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}
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