/*

* Copyright (c) 2010 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:  Controller for managing the camera startup logo state

*

*/

#ifndef CAMSTARTUPLOGOCONTROLLER_H

#define CAMSTARTUPLOGOCONTROLLER_H

// INCLUDES

#include <e32std.h>

#include <e32base.h>

enum TStartupLogoState

    {

    EStartupLogoNotVisible,

    EStartupLogoVisible

    };

// CLASS DECLARATION

/**

 *  Observer interface for listening to controller state change events

 * 

 */

class MCamStartupLogoControllerObserver

    {

public:

    virtual ~MCamStartupLogoControllerObserver() {}

    /**

     * Startup logo controller state changed.

     */

    virtual void StartupLogoControllerStateChanged(TStartupLogoState aNewState) = 0;

    };

/**

 *  Controller for managing the camera startup logo state

 * 

 */

class CCamStartupLogoController : public CBase

    {

public:

    // Constructors and destructor

    /**

     * Destructor.

     */

    virtual ~CCamStartupLogoController();

    /**

     * Two-phased constructor.

     */

    static CCamStartupLogoController* NewL(TStartupLogoState aInitialState);

    /**

     * Two-phased constructor.

     */

    static CCamStartupLogoController* NewLC(TStartupLogoState aInitialState);

public:

    /**

     * Add an observer. Returns an error code.

     */

    TInt AddObserver(MCamStartupLogoControllerObserver* aObserver);

    /**

     * Removes an observer.

     */

    void RemoveObserver(MCamStartupLogoControllerObserver* aObserver);

    /**

     * Get current state.

     */

    TStartupLogoState State() const;

    /**

     * Show startup logo.

     */

    void ShowLogo();

    /**

     * Hide startup logo.

     */

    void HideLogo();

private:

    /**

     * Constructor for performing 1st stage construction

     */

    CCamStartupLogoController(TStartupLogoState aInitialState);

    /**

     * Symbian default constructor for performing 2nd stage construction

     */

    void ConstructL();

    static TInt FailSafeCallback(TAny* ptr);

private:

    void SetState(TStartupLogoState aNewState);

private: // data

    TStartupLogoState iState;

    RPointerArray<MCamStartupLogoControllerObserver> iObservers;

    CPeriodic* iFailSafeTimer; // own

    };

#endif // CAMSTARTUPLOGOCONTROLLER_H