/*

 ============================================================================

 Name		: VRUSBStateHanlder.h

 Author	  : Junhua Xu

 Version	 : 1.0

 Copyright   : Your copyright notice

 Description : CVRUSBStateHanlder declaration

 ============================================================================

 */

#ifndef VRUSBSTATEHANLDER_H

#define VRUSBSTATEHANLDER_H

#include <e32base.h>	// For CActive, link against: euser.lib

#include <e32std.h>		// For RTimer, link against: euser.lib

#include <e32property.h> 

//#include "DummyUSBState.h" // for dummy testing

class MVRUSBStateObserver

    {

public:

    // Constructors and destructor

    virtual TInt HandleUsbPlugInL() = 0;

    virtual TInt HandleUsbPlugOutL() = 0;

    };

class CVRUSBStateHanlder : public CActive

    {

public:

    // Cancel and destroy

    ~CVRUSBStateHanlder();

    IMPORT_C static CVRUSBStateHanlder* NewL(MVRUSBStateObserver* aObserver);

public:

    IMPORT_C static TBool IsUsbActive();

private:

    // C++ constructor

    CVRUSBStateHanlder(MVRUSBStateObserver* aObserver);

    // Second-phase constructor

    void ConstructL();

private:

    // From CActive

    // Handle completion

    void RunL();

    // How to cancel me

    void DoCancel();

    // Override to handle leaves from RunL(). Default implementation causes

    // the active scheduler to panic.

    TInt RunError(TInt aError);

    void StartL();

private:

#ifdef DUMMY_USB_TESTING

    RTimer iTimer; // Provides async timing service, for dummy testing

    TInt isUSBActive;

#else

    RProperty iProperty;

#endif

    MVRUSBStateObserver* iObserver;    

    };

#endif // VRUSBSTATEHANLDER_H