#pragma once
#include <QDebug>
namespace YSG {
    template<typename T>
    class SingletonWidget {
    public:
        static T *instance() {
            if (!mInstance) {
                qInfo() << "error SingletonWidget 未创建" << mInstance;
            }
            return mInstance;
        }
        SingletonWidget() {
            if (mInstance) {
                qInfo() << "error SingletonWidget 重复创建" << mInstance;
            }
            mInstance = static_cast<T *>(this);
        }
        virtual ~SingletonWidget() {}
        SingletonWidget(T &&) = delete;
        SingletonWidget(const T &) = delete;
        void operator=(const T &) = delete;
    protected:
        static T *mInstance;
    };
    template<typename T> T *SingletonWidget<T>::mInstance = nullptr;
}