/*

* Copyright (c) 2007 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:  White balance feature.

*

*/

#ifndef C_VTUIWHITEBALANCE_H

#define C_VTUIWHITEBALANCE_H

#include    <mvtengcamerapreferences.h>

#include    "cvtuiprefsettinglistbase.h"

#include    "tvtuicomponentstate.h"

#include    "mvtuicomponent.h"

#include    "mvtuilayoutchangeobserver.h"

/**

*  TVtUiWhiteBalanceComponentState

*

* Video quality componentstate definition.

*

*  @since S60 v3.2

*/

class TVtUiWhiteBalanceComponentState : public TVtUiComponentState

    {

public:

    /**

    * Constructor

    * @param aComponent Reference to component.

    */

    TVtUiWhiteBalanceComponentState( MVtUiComponent& aComponent );

    };

/**

*  CVtUiWhiteBalance

*

*  White balance UI feature definition.

*

*  @since S60 v3.2

*/

class CVtUiWhiteBalance : public CVtUiPrefSettingListBase,

    public MVtUiComponent, public MVtUiLayoutChangeObserver 

    {

public:

    /**

    * Static constructor

    * @param aFeatureManager Reference to feature manager.

    */

    static CVtUiWhiteBalance* NewL( CVtUiFeatureManager& aFeatureManager );

    /**

    * Destructor

    */

    ~CVtUiWhiteBalance();

public: // from MVtUiFeature

    /** 

    * @see MVtUiFeature::StartL 

    */

    void StartL();

    /** 

    * @see MVtUiFeature:Stop

    */

    void Stop();

    /** 

    * @see MVtUiFeature::InitFeatureL 

    */

    void InitFeatureL();

public: // from MVtUiComponent

    /**

    * @see MVtUiComponent::ComponentId

    */

    MVtUiComponent::TComponentId ComponentId() const;

    /**

    * @see MVtUiComponent::ComponentAsControl

    */

    CCoeControl* ComponentAsControl();

    /**

    * @see MVtUiComponent::DoActivateL

    */

    void DoActivateL();

    /**

    * @see MVtUiComponent::DoDeactivateL

    */

    void DoDeactivateL();

public: // from MVtUiComponentManager

    /**

    * @see MVtUiComponentManager::HandleLayoutChangeL

    */

    void HandleLayoutChangeL();

protected: // from base class

   	/**

    * @see CVtUiPrefSettingListBase::CurrentSelection

    */

    virtual TInt CurrentSelection();

    /**

    * @see CVtUiPrefSettingListBase::SetItemsL

    */

    virtual void SetItemsL( CDesCArray& aArray );

    /**

    * @see CVtUiPrefSettingListBase::SettingPageResId

    */

    virtual TInt SettingPageResId() const;

    /**

    * @see CVtUiPrefSettingListBase::SettingPageItemChangedL

    */

    virtual void SettingPageItemChangedL( TInt aIndex );

private:

    /**

    * Constructor

    */

    CVtUiWhiteBalance( CVtUiFeatureManager& aFeatureManager );

    // Maps white balance enum to array index

    TInt MapWBEnumToArrayIndex( MVtEngCameraPreferences::TWhiteBalance&

        aWhiteBalance ) const;

    // Maps arrya index to white balance enum 

    MVtEngCameraPreferences::TWhiteBalance MapArrayIndexToWBEnum( TInt aIndex) const;        

    // Callback function that stops the feature.

    static TInt DoStopL( TAny* aAny );

    // Callback function that starts the feature.

    static TInt DoStartL( TAny* aAny );    

private:

    // Component state

    TVtUiWhiteBalanceComponentState iComponentState;

    };

#endif // CVTUIWHITEBALANCE_H