87 lines
2.3 KiB
C++
87 lines
2.3 KiB
C++
#ifndef __EventHandler_H__
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#define __EventHandler_H__
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// 没有参数和返回值的委托
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typedef void (*Func)(void);
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// 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
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typedef void (*Action)(void* param);
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// 事件处理器
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class EventHandler
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{
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public:
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void* Method; // 函数指针
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void* Target; // 参数
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EventHandler();
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EventHandler& operator=(const Func& func);
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template<typename T>
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EventHandler& operator=(void(T::*func)()) { Method = (void*)&func; return *this; }
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template<typename T, typename TArg>
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EventHandler& operator=(void(T::*func)(TArg)) { Method = (void*)&func; return *this; }
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template<typename T, typename TArg, typename TArg2>
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EventHandler& operator=(void(T::*func)(TArg, TArg2)) { Method = (void*)&func; return *this; }
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void Add(Func func);
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template<typename T>
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void Add(void(T::*func)(), T* target) { Method = (void*)&func; Target = target; }
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template<typename T, typename TArg>
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void Add(void(T::*func)(TArg), T* target) { Method = (void*)&func; Target = target; }
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template<typename T, typename TArg, typename TArg2>
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void Add(void(T::*func)(TArg, TArg2), T* target) { Method = (void*)&func; Target = target; }
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void operator()();
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template<typename T>
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void operator()()
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{
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if(Method)
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{
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auto obj = (T*)Target;
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typedef void(T::*TAction)();
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auto act = *(TAction*)Method;
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(obj->*act)();
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}
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}
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template<typename T, typename TArg>
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void operator()(TArg arg)
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{
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if(Method)
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{
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auto obj = (T*)Target;
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typedef void(T::*TAction)(TArg);
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auto act = *(TAction*)Method;
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(obj->*act)(arg);
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}
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}
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template<typename T, typename TArg, typename TArg2>
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void operator()(TArg arg, TArg arg2)
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{
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if(Method)
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{
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auto obj = (T*)Target;
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typedef void(T::*TAction)(TArg, TArg2);
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auto act = *(TAction*)Method;
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(obj->*act)(arg, arg2);
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}
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}
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/*void operator+= (const Func& func) { Add(func); }
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template<typename T>
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void operator+= (void(T::*func)()) { Method = (void*)&func; }
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template<typename T, typename TArg>
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void operator+= (void(T::*func)(TArg)) { Method = (void*)&func; }
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template<typename T, typename TArg, typename TArg2>
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void operator+= (void(T::*func)(TArg, TArg2)) { Method = (void*)&func; }*/
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private:
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};
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#endif
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