/*

* 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: 

*  Pure virtual class for a common ancestor for setting pages with listboxes

*

*/

#ifndef __AKNLISTBOXSETTINGPAGE_H__

#define __AKNLISTBOXSETTINGPAGE_H__ 

#include <aknsettingpage.h>

#include <AknUtils.h>

#include <eikslb.h>

#include <eiklbo.h>

#include <eiklbx.h>

#include <eikclb.h>

#include <eikclbd.h>

#include <eiktxlbm.h>

#include <coecobs.h>

#include <aknlists.h>

/**

*

* Intermediate setting page class to soak up common listbox setting page code

* 

* This class has the responsibility of performing the listbox layout and setting

* out some  of the API for listbox setting pages.

*

*/

class CAknListBoxSettingPage : public CAknSettingPage, public MEikListBoxObserver

	{

public: 

	/**

	* Type-specific control access method with a null implementation

	*

	*/

	virtual CAknSetStyleListBox* ListBoxControl() const = 0;

	/**

	* Default empty implementation of the listbox observer handling routine

	*/

	IMPORT_C virtual void HandleListBoxEventL(CEikListBox* aListBox, TListBoxEvent aEventType);

protected:

	/**

	* Pass-through constructor

	* @param aSettingPageResourceId		resource id for CAknSettingPage::BaseConstructL()

	*

	*/

	CAknListBoxSettingPage( TInt aSettingPageResourceId );

	/**

	* Pass-through constructor 

	*

	* Generic constructor allowing either editor-resource constuction or setting page

	* resource based constuction

	* 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	externally-owned title text

	* @param aSettingNumber		the setting number to be displayed

	* @param aControlType		control type enumeration for the control to be constructed by type

	* @param aEditorResourceId	resource Id at which to read the control's resource

	* @param aSettingPageResourceId optional setting page resource Id; See notes above about resource combinations

	*/

	CAknListBoxSettingPage(	const TDesC* aSettingTitleText, 

								TInt aSettingNumber, 

								TInt aControlType,

								TInt aEditorResourceId, 

								TInt aSettingPageResourceId = 0 );

   /**

	* This standard implementation uses ListBoxControl to access the listbox and 

	* check the number of items.  If 0, validity is set to EFalse

	*

	*/

	IMPORT_C void CheckAndSetDataValidity();

	/**

	* Implementation to remove go to "invalid" cba when data is invalid

	*/

	IMPORT_C void UpdateCbaL();

	/**

	* From CCoeControl:

	* Routine called by Cone framework whenever there has been a size change on this 

	* control

	*/

	IMPORT_C void SizeChanged();

	/** 

	* From CCoeControl:

	* Common draw routine for the listboxes

	*

	* @param aRect	rectangle within which to draw

	*/

	IMPORT_C void Draw(const TRect& aRect) const;

    //

    // New methods in this class

    //

    /**

    * Obtain initial selection policy for popup setting item editing

    *

    * @since 2.0

    * @return TBool EFalse iff focus is not initially to be set to the selected item

    */

    static TBool FocusToSelectedItem();

    /**

    * Obtain initial selection policy for popup setting item editing

    *

    * @since 2.0

    * @return TBool EFalse iff focus is initially to be set to the selected item

    */

    static TBool FocusToFirstItem();

    /**

    * Create colorskinned icon and add it to icon array. Utility for

    * radiobutton, popup & checkbox setting page lists

    *

    * @since 3.1

    */

public:

    static void CreateIconAndAddToArrayL( CArrayPtr<CGulIcon>*& aIconArray,

                                          const TAknsItemID& aId,

                                          const TInt aColorIndex,

                                          const TDesC& aBmpFile,

                                          const TInt32 aBmp,

                                          const TInt32 aBmpM );        

private:

/**

 */

	IMPORT_C virtual void CAknListBoxSettingPage_Reserved_1();

protected:

	/**

	* Layout for the extra piece of white (sometimes) at the bottom of the listbox

	*

	*/

	TAknLayoutRect iAreaExtension;

	};

#endif