objectbutton.h

#ifndef OBJECTBUTTON_H
#define OBJECTBUTTON_H

#include <string>
#include "external/json/json.h"
#include "entity.h"
#include "image.h"
#include "text.h"
#include "button.h"


template<class T>
class ObjectButton : public Button {
public:
    ObjectButton() 
        : mObj(nullptr), mObjFunc(nullptr)
    {
        mFunc = nullptr;
    }
    ~ObjectButton(){
    }
    void RegisterCallBack(T *obj, void (T::*func)(std::string), std::string param){
        mObj     = obj;
        mObjFunc = func;
        mParam   = param;
        mFunc    = nullptr;
    }
    void OnClick(){
        if (mObj != nullptr && mObjFunc != nullptr)
            ((mObj)->*(mObjFunc))(mParam);
        else if (mFunc != nullptr)
            mFunc(mParam);
        //Attempt to call the script if one is open
        if (!mScript.Open())
            return;

        mScript.CallFunction("OnClick");
    }
    Json::Value Save() const {
        //Unfortunately I can't change the function that's pointed to via loading json
        //as it's code not data, so instead we just save the param
        Json::Value val = Entity::Save();
        val["type"]    = "objectbutton";
        val["text"]    = mText.Save();
        val["param"]   = mParam;
        
        return val;
    }
    void Load(Json::Value val){
        Entity::Load(val);
        mParam = val["param"].asString();
        mText.Load(val["text"]);
    }

private:
    T *mObj;
    void (T::*mObjFunc)(std::string);
    std::string mParam;
};

#endif