YiBackButtonHandler.h

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// © You i Labs Inc. 2000-2017. All rights reserved.
#ifndef _YI_BACK_BUTTON_HANDLER_H_
#define _YI_BACK_BUTTON_HANDLER_H_

#include "binding/YiScriptableObject.h"
#include "framework/YiPredef.h"

class CYIBackButtonHandler : public CYIScriptableObject
{
public:

    class Listener
    {
    public:
        virtual ~Listener();

        virtual bool OnBackButtonPressed() = 0;
    };

    static bool NotifyBackButtonPressed();
    
    static void AddListener(Listener *pListener);

    static void RemoveListener(Listener *pListener);

    static void RemoveAllListeners();
    
private:
    CYIBackButtonHandler();
    
    static std::vector<CYIBackButtonHandler::Listener *> m_pBackButtonListeners;
};

#endif // _YI_BACK_BUTTON_HANDLER_H_