/*

* Copyright (c) 2002 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* which accompanies this distribution, and is available

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description: 

*	  Support for Radio Button setting page 

*

*/

#ifndef __AKNRADIOBUTTONSETTINGPAGE_H__

#define __AKNRADIOBUTTONSETTINGPAGE_H__ 

// For coecontrol

#include <coecntrl.h>

#include <eikdef.h>

class CAknRadioButtonSettingPageExtension;

/** 

*  This class sets out a radio button listbox within a setting page.

*  

*/

class CAknRadioButtonSettingPage : public CAknListBoxSettingPage

{

public:

	IMPORT_C CAknRadioButtonSettingPage(

		TInt aResourceID, 

		TInt& aCurrentSelectionIndex, 

		const MDesCArray* aItemArray );

 /**

 * Constructor that allows separate setting page and editor resources

 *

 * 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

 *			present 			= 0 				Default Avkon SP resource if used

 *			 = 0				= 0 				Not permitted 

 *

 * 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.

 * Note that the setting title provided here must be owned by the client.

 *

 * 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; EXTERNALLY OWNED

 * @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 aCurrentSelectionIndex	The currently selected index

 * @param aItemArray			List of option texts and their selection states

 */

	IMPORT_C CAknRadioButtonSettingPage(	const TDesC* aSettingTitleText, 

								TInt aSettingNumber, 

								TInt aControlType,

								TInt aEditorResourceId, 

								TInt aSettingPageResourceId,

								TInt& aCurrentSelectionIndex, 

								const MDesCArray* aItemArray );

	/** 

	* 2nd stage contruction for this type.  Calls CAknSettingPage::BaseConstuctL() where the object is constructed

	* from resource.

	*/

	IMPORT_C virtual void ConstructL();

	/** 

	* Type specific access to the hosted "editor"

	*

	* @return	pointer to contained listbox

	*/

	IMPORT_C CAknSetStyleListBox* ListBoxControl() const; 

	/** 

	* From MEikListBoxObserver

	* @param	listbox generating the event

	* @param	type of listbox event

	*/

	IMPORT_C virtual void HandleListBoxEventL(CEikListBox* aListBox,

				 MEikListBoxObserver::TListBoxEvent aEventType);

	/**

	* Method to update the item array after a change in content and to re-select 

	* the "pushed in" index

	* @param CDesCArrayFlat*	aItemArray	The new item array; array of texts

	* @param TInt					aPushed		A valid 0-based index.  -1 is also legal

	* indicating nothing is pushed

	*/

	IMPORT_C void SetItemArrayAndSelectionL( const MDesCArray* aItemArray, TInt aPushed );

    /**

    * From CCoeControl 

    * Handles Radiobuttonlist's PointerEvent 

    *    

    * @param aPointerEvent PointerEvent to be handled

    */     

    IMPORT_C void HandlePointerEventL(const TPointerEvent& aPointerEvent);

    IMPORT_C void HandleResourceChange(TInt aType);

protected:

/**

* C++ destructor

*/

	IMPORT_C virtual ~CAknRadioButtonSettingPage();

/**

* Called when the external setting is to be updated

*/

	IMPORT_C virtual void UpdateSettingL();

/**

* Called immediately prior to activation, but after all construction

*/

	IMPORT_C void DynamicInitL();

/**

 * This method overrides the default implementation in order to do the special 

 * processing of selecting an item

 *

 */

	IMPORT_C virtual void SelectCurrentItemL();

private:

	/**

	* Method to move the selection to position aPushed

	*

	*/

	void SetRadioButtonSelectionL( TInt aPushed );

	/**

	* Internal method to re-generate the internal, "decorated" text array used in the

	* real listbox. 

	*/

	void GenerateInternalArrayAndGiveToListBoxL();

    void InitialiseRadioButtonBitmapsL();

//

// CoeControl Framework and reserved methods

//

protected:

/**

 * 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 );

/**

 * New reserved methods for CAknSettingPage hierarchy

 */ 

private: 

	IMPORT_C virtual void CAknSettingPage_Reserved_1();

	IMPORT_C virtual void CAknSettingPage_Reserved_2();

private:

/**

 * New reserved method from CAknListBoxSettingPage 

 *

 */

	IMPORT_C virtual void CAknListBoxSettingPage_Reserved_1();

private:

	// Back up copy of the selection index

	TInt iOldSelectionIndex;

	// Extension, replaces CDesCArrayFlat* iInternalItemArray

	CAknRadioButtonSettingPageExtension* iExtension;

	// The objects pointed to or referenced by these are not owned

	TInt& iCurrentSelectionIndex; 

	const MDesCArray* iItemArray; 

};

#endif