/*

* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:  Blink/show Usb indicator notifier implementation

 *

*/

#ifndef C_USBINDICATORNOTIFIER_H

#define C_USBINDICATORNOTIFIER_H

#include <e32base.h>

#include <AknNotifyStd.h>       // SAknSmallIndicatorParams

#include <AknNotifySignature.h> // SAknNotifierPackage

#include <avkon.hrh>            // EAknIndicatorUSBConnection

#include "cusbtimer.h"

#include "cusbnotifier.h"

#include "cusbvbusobserver.h"

#include "cusbotgwatcher.h"

/**

 * Class implements functionality of showing/blinking usb indicator

 * Class does not provide method to get response from the user

 */

NONSHARABLE_CLASS( CUsbIndicatorNotifier ): public CUsbNotifier, MUsbTimerObserver, MUsbOtgWatcherStateObserver, MUsbVBusObserver

    {

public:

    /**

     * Two-phased constructor.

     * @param aNotifManager parent

     * @param aOtgWatcher provides VBus observer and usb otg watcher state notifications

     * @return Pointer to the new instance of CUsbIndicatorNotifier

     */

    static CUsbIndicatorNotifier* NewL(CUsbNotifManager* aNotifManager, CUsbOtgWatcher* aOtgWatcher);

    /**

     * Destructor.

     */

    virtual ~CUsbIndicatorNotifier();

    // From MUsbOtgWatcherStateObserver

    /**

     * Otg Watcher state changed call back

     * @param aState new state

     */

    virtual void OtgWatcherStateChangedL(TUsbStateIds aState);

    // From MUsbVBusObserver

    /**

     * VBus down event received

     */

    virtual void VBusDownL();

    /**

     * VBus up event received

     */

    virtual void VBusUpL();

    /**

     * error handler

     * @param aError error code

     */   

    virtual void VBusObserverErrorL(TInt aError);

    // From base class CUsbNotifier

    /**

     * Start to show notifier

     */

    virtual void ShowL();

    /**

     * Stop showing notifier

     */

    virtual void Close();

    // From MUsbTimerObserver

    /**

     * Timer elapsed

     * @param Timer id

     */

    void TimerElapsedL(TUsbTimerId aTimerId);

private:

    /**

     * Default constructor.

     * @param aNotifManger parent

     * @param aOtgWatcher Otg watcher

     */

    CUsbIndicatorNotifier(CUsbNotifManager* aNotifManager, CUsbOtgWatcher* aOtgWatcher);

    /**

     * 2nd phase constructor.

     */

    void ConstructL();

    /**

     * Set USB indicator On or Off

     * @param aState Indicator states 

     */

    void SetIndicatorStateL(const TInt aState);

    /**

     * Show/hide static icon of the indicator. 

     * If the indicator is blinking, stop blinking it and show/hide the static 

     * form of the indicator.

     * @param aVisible ETrue - Show the indicator, EFalse - Hide the indicator 

     */

    void ShowStaticL(TBool aVisible);

    /**

     * Blinks indicator

     */

    void BlinkL();

    /**

     * Sets indicator accordingly

     */

    void SetIndicatorL();

private:

    // data

    /**

     * OtgWatcher

     * not own

     */

    CUsbOtgWatcher* iOtgWatcher;

    /**

     * Switch timer for showing/hiding the usb indicator interleavingly for 

     * animating the indicator. 

     * Own

     */

    CUsbTimer* iIconBlinkingTimer;

    /**

     * Current indicator state

     */

    TInt iIndicatorState;

    };

#endif // C_USBINDICATORNOTIFIER_H