/*

* Copyright (c) 2002 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: 

*     Interface for Volume setting page

*

*/

#ifndef __AKNVOLUMESETTINGPAGE_H__

#define __AKNVOLUMESETTINGPAGE_H__ 

// For coecontrol

#include <coecntrl.h>

// General eikon

#include <eikdef.h>

// For CBA stuff

#include <eikbtgpc.h>

// Avkon controls

#include "Aknvolumecontrol.h"

#include "aknsettingpage.h"

class CAknVolumeSettingPage : public CAknSettingPage

{

public:

	/**

	 * Simple constructor depending only on a single resource Id and a scalar reference

	 *

	 * @param aSettingPageResourceId		Setting Page to use (if present)

	 * @param aVolume							Reference to external integer volume

	 */

	IMPORT_C CAknVolumeSettingPage(TInt aResourceID, TInt& aVolume);

	/**

	 * Constructor that allows separate setting page and editor resources

	 * 

	 * This constructor allows the use of setting page using only the editor resource.  Other combinations are also possible

	 *

	 * In all cases the number (if supplied i.e. <> 0 ) is used.  

	 *

	 *		Editor Resource		Setting Page Resource

	 *			present				present				Both are used (but text & number overridden)

	 *			 = 0					present				Editor resource is used via SP resource (Effectively like the other constructor)

	 *			present				= 0					Default Avkon SP resource if used + this editor resource

	 *			 = 0					= 0					uses default resource for both SP and editor. This is OK if:

	 *	 i) control type is present, 

	 *  ii) a default resource exists ( OK for text, integer, date, time, duration )

	 *

	 * Note: THe first argument is a TDesC* (rather than TDesC&) because the other constructor

	 * cannot initialize such a member without allocation or having an internal dummy buffer.

	 *

	 * Rules for text and numbers: The rules are the same for both:  (non-zero length) text or number other 

	 * than EAknSettingPageNoOrdinalDisplayed if given in this constructor will not override resource 

	 * (unless that is zero length or EAknSettingPageNoOrdinalDisplayed).  Note, however, that text or number given via the 

	 * specific API for setting them, WILL override resource.

	 * It is assumed that number from resource is very rare.  Special text is somewhat more likely.

	 * 

	 *

	 * @param aSettingTitleText	Text at top of setting pane

	 * @param aSettingNumber		Number at top left (if present)

	 * @param aControlType			Determines the type constructed and how its resource is read

	 * @param aEditorResourceId	Editor resource to use in the setting page (if present)

	 * @param aSettingPageResourceId		Setting Page to use (if present)

	 * @param aVolume					Reference to integer holding the volume

	 */

	IMPORT_C CAknVolumeSettingPage(	const TDesC* aSettingTitleText, 

								TInt aSettingNumber, 

								TInt aControlType,

								TInt aEditorResourceId, 

								TInt aSettingPageResourceId,

								TInt& aVolume );

    /**

    *	From CCoeControl

    */

    IMPORT_C void HandlePointerEventL(const TPointerEvent& aPointerEvent);

protected:

	/**

	* C++ destructor

	*/

	IMPORT_C virtual ~CAknVolumeSettingPage();

	/**

	* Normal 2-nd stage construction. Internally calls 

	* CAknSettingPage::ConstructFromResourceL and 

	* CAknSettingPage::BaseConstructL()

	*

	*/

	IMPORT_C virtual void ConstructL();

	/**

	*

	* Type-specific access to the editor. Returns 0 until BaseConstructL() has been called,

	* usually from within ExecuteLD()

	*

	*/

	IMPORT_C CAknVolumeControl* VolumeControl();

//

// CoeControl Framework methods

//

protected:

	IMPORT_C virtual void SizeChanged();

	IMPORT_C virtual void Draw(const TRect &aRect) const;

/**

 * Writes the internal state of the control and its components to aStream.

 * Does nothing in release mode.

 * Designed to be overidden and base called by subclasses.

 *

 * @param	aWriteSteam		A connected write stream

 */	

	IMPORT_C virtual void WriteInternalStateL(RWriteStream& aWriteStream) const;

private:

/**

 *	Reserved method derived from CCoeControl

 */

	IMPORT_C virtual void Reserved_2();

private:

    /**

    * From CAknControl

    */

    IMPORT_C void* ExtensionInterface( TUid aInterface );

//

// Framework methods from CAknSettingPage

//

protected:	

/**

 * Called when something has changed and the client's object needs to have its value updated

 *

 */

	IMPORT_C virtual void UpdateSettingL();

/**

 * Called when the user accepts a setting and the setting page is about to be dismissed.  The latest value of the

 * setting is written to the client's object

 */

	IMPORT_C virtual void AcceptSettingL();

/**

 * Called when the user rejects the setting.  A backup copy may need to be restored if UpdateWhenChanged flag was set

 *

 */

	IMPORT_C virtual void RestoreOriginalSettingL();

/**

 * New reserved methods for CAknSettingPage hierarchy

 */ 

private: 

	IMPORT_C virtual void CAknSettingPage_Reserved_1();

	IMPORT_C virtual void CAknSettingPage_Reserved_2();

private:

	TInt& iVolume;

	TInt iBackupVolume;

};

#endif