From 4e064b34e4e0e3fc386355bca381b7ee3290d664 Mon Sep 17 00:00:00 2001
From: Stone <nnhy@vip.qq.com>
Date: Fri, 17 Jun 2016 11:36:51 +0000
Subject: [PATCH] =?UTF-8?q?=E5=A2=9E=E5=8A=A0=E4=BA=8B=E4=BB=B6=E5=A7=94?=
 =?UTF-8?q?=E6=89=98?=
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---
 Core/EventHandler.cpp | 58 +++++++++++++++++++++++++++++
 Core/EventHandler.h   | 86 +++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 144 insertions(+)
 create mode 100644 Core/EventHandler.cpp
 create mode 100644 Core/EventHandler.h

diff --git a/Core/EventHandler.cpp b/Core/EventHandler.cpp
new file mode 100644
index 00000000..903f143b
--- /dev/null
+++ b/Core/EventHandler.cpp
@@ -0,0 +1,58 @@
+#include "Type.h"
+#include "DateTime.h"
+#include "SString.h"
+
+#include "EventHandler.h"
+
+/************************************************ EventHandler ************************************************/
+EventHandler::EventHandler()
+{
+	Method	= nullptr;
+	Target	= nullptr;
+}
+
+EventHandler& EventHandler::operator=(const Func& func)
+{
+	Method	= (void*)func;
+
+	return *this;
+}
+
+void EventHandler::Add(Func func)
+{
+	Method	= (void*)func;
+}
+
+void EventHandler::operator()()
+{
+	if(!Method) return;
+	
+	if(Target)
+		((Action)Method)(Target);
+	else
+		((Func)Method)();
+}
+
+/*void EventHandler::Invoke(void* arg)
+{
+	if(!Method) return;
+	
+	auto func	= (Func)Method;
+	
+	if(Target)
+		func(Target, arg);
+	else
+		((Action)Method)(arg);
+}
+
+void EventHandler::Invoke(void* arg1, void* arg2)
+{
+	if(!Method) return;
+	
+	auto func	= (Func)Method;
+	
+	if(Target)
+		func(Target, arg1, arg2);
+	else
+		func(arg1, arg2);
+}*/
diff --git a/Core/EventHandler.h b/Core/EventHandler.h
new file mode 100644
index 00000000..07ad6929
--- /dev/null
+++ b/Core/EventHandler.h
@@ -0,0 +1,86 @@
+#ifndef __EventHandler_H__
+#define __EventHandler_H__
+
+// 没有参数和返回值的委托
+typedef void (*Func)(void);
+// 一个参数没有返回值的委托，一般param参数用作目标对象，调用者用静态函数包装成员函数
+typedef void (*Action)(void* param);
+
+// 事件处理器
+class EventHandler
+{
+public:
+	void*	Method;	// 函数指针
+	void*	Target;	// 参数
+
+	EventHandler();
+
+    EventHandler& operator=(const Func& func);
+	template<typename T>
+    EventHandler& operator=(void(T::*func)())		{ Method	= (void*)&func; return *this; }
+	template<typename T, typename TArg>
+    EventHandler& operator=(void(T::*func)(TArg))	{ Method	= (void*)&func; return *this; }
+	template<typename T, typename TArg, typename TArg2>
+    EventHandler& operator=(void(T::*func)(TArg, TArg2))	{ Method	= (void*)&func; return *this; }
+
+	void Add(Func func);
+	template<typename T>
+	void Add(void(T::*func)(), T* target)	{ Method	= (void*)&func; Target	= target; }
+	template<typename T, typename TArg>
+	void Add(void(T::*func)(TArg), T* target)	{ Method	= (void*)&func; Target	= target; }
+	template<typename T, typename TArg, typename TArg2>
+	void Add(void(T::*func)(TArg, TArg2), T* target)	{ Method	= (void*)&func; Target	= target; }
+
+	void operator()();
+	template<typename T>
+	void operator()()
+	{
+		if(Method)
+		{
+			auto obj	= (T*)Target;
+			typedef void(T::*TAction)();
+			auto act	= *(TAction*)Method;
+
+			(obj->*act)();
+		}
+	}
+	template<typename T, typename TArg>
+	void operator()(TArg arg)
+	{
+		if(Method)
+		{
+			auto obj	= (T*)Target;
+			typedef void(T::*TAction)(TArg);
+			auto act	= *(TAction*)Method;
+
+			(obj->*act)(arg);
+		}
+	}
+	template<typename T, typename TArg, typename TArg2>
+	void operator()(TArg arg, TArg arg2)
+	{
+		if(Method)
+		{
+			auto obj	= (T*)Target;
+			typedef void(T::*TAction)(TArg, TArg2);
+			auto act	= *(TAction*)Method;
+
+			(obj->*act)(arg, arg2);
+		}
+	}
+
+    /*void operator+= (const Func& func)	{ Add(func); }
+
+	template<typename T>
+    void operator+= (void(T::*func)()) { Method	= (void*)&func; }
+
+	template<typename T, typename TArg>
+    void operator+= (void(T::*func)(TArg)) { Method	= (void*)&func; }
+
+	template<typename T, typename TArg, typename TArg2>
+    void operator+= (void(T::*func)(TArg, TArg2)) { Method	= (void*)&func; }*/
+
+private:
+};
+
+#endif