// Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies).

/**

This active object will, once activated, repeatedly attempt to defer

a transition deadline.

It will stop once an attempt to defer fails eg. because deferral

was cancelled or the transition was acknowledged or the deferral limit was reached.

@internalComponent

@released

*/

NONSHARABLE_CLASS(CSsmDeferralMonitor) : public CActive

    {

public:

    CSsmDeferralMonitor(RSsmStateAwareSession& aStateAwareSession, CSsmStateAwareSession2& aOwnerActiveObject);

    ~CSsmDeferralMonitor();

    /**

    Request deadline deferral for the last transition

    notification

    */

    void DeferNotification();

    void NotifyOfAcknowledgement();

protected:

    /**

    Re-call DeferNotification(), unless the previous

    call completed with an error.

    */

    void RunL();

    /**

    Handle errors thrown from RunL() - call HandleDeferralErrror()    

    */

    TInt RunError(TInt aError);

    void DoCancel();

private:

    RSsmStateAwareSession& iSsmStateAwareSession;

    CSsmStateAwareSession2& iOwnerActiveObject;

    TBool iCeaseDeferral;

    };