/// <summary>
/// 先實(shí)現(xiàn)槽基類,包含兩個(gè)虛函數(shù)對(duì)象，主要為后續(xù)調(diào)用提供接口
/// 子類負(fù)責(zé)實(shí)現(xiàn)exec方法
/// </summary>
/// <typeparam name="TParam">Recver中待執(zhí)行函數(shù)的參數(shù)類型</typeparam>
template <class TParam>
class SlotBase
{
public:
    virtual void Exec(TParam param) = 0;
    virtual ~SlotBase() {};
};
/// <summary>
/// Slot子類，負(fù)責(zé)實(shí)現(xiàn)exec方法，通過(guò)exec調(diào)用recver.func，同時(shí)Slot構(gòu)造函數(shù)負(fù)責(zé)初始化兩個(gè)內(nèi)部變量，將需要關(guān)聯(lián)的recver和recver.func插入槽
/// </summary>
/// <typeparam name="TRecver">recver類的具體類型</typeparam>
/// <typeparam name="TParam">recver.func的參數(shù)類型</typeparam>
template <class TRecver,class TParam>
class Slot:public SlotBase<TParam>
{
public:
    Slot(TRecver* pObj, void (TRecver::* func)(TParam)) 
    {
        m_pRecver = pObj;
        m_func = func;
    };
    VOID Exec(TParam param)
    {
        (m_pRecver->*m_func)(param);
    };
private:
    TRecver* m_pRecver = NULL;
    void (TRecver::* m_func)(TParam);
};
/// <summary>
/// 信號(hào)類
/// 私有成員m_pSlotSet，存儲(chǔ)槽指針的vector
/// 重載()，在括號(hào)調(diào)用參數(shù)時(shí)，循環(huán)調(diào)用m_pSlotSet中存儲(chǔ)的槽指針，將參數(shù)傳遞給槽的exec方法
/// bind():將一個(gè)槽與信號(hào)類實(shí)例關(guān)聯(lián)起來(lái)
/// 
/// </summary>
/// <typeparam name="TParam">待執(zhí)行方法的參數(shù)類型</typeparam>
/// <typeparam name="TRecver">recver類的類型</typeparam>
template<class TParam>
class Signal
{
public:
    template<class TRecver>
    void Bind(TRecver* pObj, void (TRecver::* func)(TParam))
    {
        m_pSlotSet.push_back(new Slot<TRecver,TParam>(pObj, func));
    };
    void operator()(TParam param)
    {
        for(int i=0;i<m_pSlotSet.size();i++)
        {
            m_pSlotSet[i]->Exec(param);
        }
    };
    ~Signal() 
    {
        for (int i = 0; i < m_pSlotSet.size(); i++)
            delete m_pSlotSet[i];
    };
private:
    std::vector<SlotBase<TParam>*> m_pSlotSet;
};
//開(kāi)始模擬
class RecverOne
{
public:
    void functionOne(int param) 
    {
        std::cout << "這是接收者1中的某個(gè)方法執(zhí)行：" << param << std::endl;
    };
};
class RecverTwo
{
public:
    void functionTwo(int param)
    {
        std::cout << "這是接收者2中的某個(gè)方法執(zhí)行：" << param << std::endl;
    };
};
class SenderObj
{
public:
    //模擬值改變發(fā)出信號(hào)
    void testSginal(int param) 
    {
        valueChanged(param);
    };
public:
    Signal<int> valueChanged;//定義一個(gè)當(dāng)值改變時(shí)觸發(fā)的信號(hào)
};
//為了更方便地將sender中的signal與槽和recver關(guān)聯(lián)，可以定義一個(gè)宏
#define connect(sender,signal,recver,method) ((sender)->signal.Bind(recver,method))
int main()
{
    //開(kāi)始測(cè)試
    //先定義兩個(gè)接收者
    RecverOne* R1 = new RecverOne;
    RecverTwo* R2 = new RecverTwo;
    //定義一個(gè)發(fā)送者
    SenderObj* sd = new SenderObj;
    //將R1和R2中的函數(shù)插入sd中的信號(hào)槽
    connect(sd, valueChanged, R1, &RecverOne::functionOne);
    connect(sd, valueChanged, R2, &RecverTwo::functionTwo);
    //發(fā)送信號(hào)
    sd->valueChanged(5);
    std::cout << "Hello World!\n";
}