/*

* Copyright (c) 2005-2007 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:  Wrapper class for AknVolumeControl

*

*/

#ifndef _XNVOLUMECONTROLADAPTER_H

#define _XNVOLUMECONTROLADAPTER_H

//  INCLUDES

#include <e32base.h>

#include "xncontroladapter.h"

// FORWARD DECLARATIONS

class CXnNodePluginIf;

class MXnVolumeControlObserver;

class CAknVolumeControl;

// CLASS DECLARATION

/**

*  @ingroup group_xnvolumecontrolfactory

*  @lib xnvolumecontrol.lib

*  @since Series 60 3.2

*/

class CXnVolumeControlAdapter : public CXnControlAdapter, public MCoeControlBackground

   {

public:

	/**

	 * 2 phase construction.

	 */

	static CXnVolumeControlAdapter* NewL(CXnControlAdapter* aParent, CXnNodePluginIf& aNode);

	/**

	 * Destructor.

	 */

	virtual ~CXnVolumeControlAdapter();

public: // New functions

    /**

    * Sets the value of the volume control

    * @param aValue new value

    */

	void SetValueL( TInt aValue );

    /**

    * Returns the value of the volume control

    */	

	TInt ValueL();

    /**

    * Sets the range for the volume control

    * @param aMinimumValue Minimum value

    * @param aMaximumValue Maximum value

    */	

	void SetRangeL( TInt aMimimumValue, TInt aMaximumValue );

    /**

    * Returns the minimum and maximum value of the volume control range

    * @param aMinimumValue minimum value reference

    * @param aMaximumValue maximum value reference

    */	

	void GetRangeL( TInt& aMinimumValue, TInt& aMaximumValue );

	/**

	* Sets the observer for the volume control

	* @param pointer to the observer

	*/ 

	void SetObserver( MXnVolumeControlObserver* aObserver );

public: // from base classes

    /**

    * From CXnControlAdapter Handles the property changes.

    * @since Series 60 3.1

    * @return void.

    */  

    void DoHandlePropertyChangeL( CXnProperty* aProperty = NULL ); 

    /**

    * From CCoeControl Handles the resource change.

    * @since Series 60 3.1

    * @param aType A type of the resource change

    * @return void.

    */

    void HandleScreenDeviceChangedL();

    /**

    * See CCoeControl documentation

    */    	

    void HandlePointerEventL( const TPointerEvent& aPointerEvent );

    /**

    * See CCoeControl documentation

    */    

    void SizeChanged();

    /**

    * See CCoeControl documentation

    */    

    TInt CountComponentControls() const;

    /**

    * See CCoeControl documentation

    */    

    CCoeControl* ComponentControl( TInt aIndex ) const;

  	/**

    * From MCoeControlBackground. Draws the background for a given control.

    * @param aGc Graphics context used for drawing.

    * @param aControl The control being drawn.

    * @param aRect The area to be redrawn.

  	*/

  	void Draw( CWindowGc& aGc, const CCoeControl& aControl,

  	           const TRect& aRect ) const;

private:

	CXnVolumeControlAdapter(CXnControlAdapter* aParent, CXnNodePluginIf& aNode);

	void ConstructL();

    virtual void Draw(const TRect& aRect) const;

    /**

    * Returns the current volume value from property

    */

    TInt GetCurrentValueL();

    /**

    * Notifies the observer with new volume value

    */

    void NotifyObserverL();

	/**

	 * Sets volume control CSS properties

     * @param aNode UI Node

     * @return void

	 */

	void SetVolumeControlPropertiesL();

	/**

	* Constructs the volume control component from resource

	*/

	void ConstructVolumeControlL();

private:

    CXnControlAdapter*  		iParent;        // Parent control, not owned

    CXnNodePluginIf&    		iNode;          // UI node, not owned

    CAknVolumeControl*			iVolumeControl; // Avkon Volume control. Owned.

    MXnVolumeControlObserver*   iObserver;      // Observer. Not owned.

    TRect                       iHitRect;       // Rect where pointer event previously hit

    TInt                        iSteps;         // number of steps

    TInt                        iMutedValue;    // previous value when muted

    TBool                       iMuted;         // is muted?    

    TBool                       iButton1Down;   // Button 1 is pressed down

   };

#endif      // _XNVOLUMECONTROLADAPTER_H

// End of File