/*

* 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 the License "Symbian Foundation License v1.0" to Symbian Foundation members and "Symbian Foundation End User License Agreement v1.0" to non-members

* which accompanies this distribution, and is available

* at the URL "http://www.symbianfoundation.org/legal/licencesv10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description: 

*     Support for passwords in Settings Pages

*

*

*/

#ifndef __AKNPASSWORDSETTINGPAGE__

#define __AKNPASSWORDSETTINGPAGE__ 

#include <eikdef.h>

#include <eikbtgpc.h>

// for the alphanumeric secret editor:

#include <eikseced.h>

#include <aknsettingpage.h>

const TInt KDefaultAlphaPasswordLength = 12;

const TInt KDefaultNumericPasswordLength = 4;

/** 

 * Structure to hold the required resources for a password confirmation sequence 

 * This holds 3 resource IDs.  One for a query, and a note each for 

 * success or failure

 * This structure contains the information read in from a AVKON_PASSWORD_CONFIRMATION

 * resource structure.

 */

class SAknConfirmationResource 

{

public:

	/**

	* Resource for the password query, if non-zero

	*/

	TInt iEntryQueryResourceId;

	/** 

	* Resource for the success note, if non-zero

	*/

	TInt iSuccessNoteResourceId;

	/** 

	* Resource for the failure note, if non-zero

	*/

	TInt iFailureNoteResourceId;

};

/**

 * Base class for Password editors to ensure that their general functionality is 

 * consistent.  

 * 

 * All contained-editor-specific stuff should be in the derived classes.

 *

 * THIS CLASS IS NOT INSTANTIATABLE

 * 

 */

class CAknPasswordSettingPage : public CAknSettingPage

{

public:

	/**

	*

	* Modes to be used for the matching of password texts

	*

	*/

	enum TAknPasswordMatchingMode

	{

	ECaseSensitive,

	ECaseInsensitive

	};

public:

	/**

	 * Simple constructor depending only on a single resource Id and the new and old password.

	 * Editor resource is given via the link in the setting page resource. 

	 *

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

	 * @param aNewPassword

	 * @param aOldPassword					password to be checked against

	 */

	IMPORT_C CAknPasswordSettingPage(

		TInt aResourceID, 

		TDes& aNewPassword, 

		const TDesC& aOldPassword);

	/**

	 * 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.

	 * This descriptor must be owned by the client since not copy is taken until ExecuteLD()

	 *

	 * 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 aNewPassword			Descriptor for the new password

	 * @param aOldPassword			Descriptor for the old password

	 */

	IMPORT_C CAknPasswordSettingPage(	const TDesC* aSettingTitleText, 

								TInt aSettingNumber, 

								TInt aControlType,

								TInt aEditorResourceId, 

								TInt aSettingPageResourceId,	

								TDes& aNewPassword, 

								const TDesC& aOldPassword );

	/**

	* Set the resource Id set for the old password confirmation sequence. 

	* Resource Id should be for a AVKON_PASSWORD_CONFIRMATION structure

	*

	* @param resource for old password sequence

	*/

	IMPORT_C void SetOldPasswordConfirmationResourceId( TInt aOldPasswordConfirmationResourceId ); 

	/** 

	* Set the resource Id set for the new password confirmation sequence

	* Resource Id should be for a AVKON_PASSWORD_CONFIRMATION structure

	*

	* @param resource for new password sequence

	*/

	IMPORT_C void SetNewPasswordConfirmationResourceId( TInt aNewPasswordConfirmationResourceId );

	/**

	* Sets the matching mode to be used in the password validation

	* @param	one of ECaseSensitive or ECaseInsensitive

	*/

	IMPORT_C void SetMatchingMode( TAknPasswordMatchingMode aMode );

	/**

	* Returns the matching mode to be used in the password validation

	* @return	one of ECaseSensitive or ECaseInsensitive

	*/

	IMPORT_C TAknPasswordMatchingMode MatchingMode();

	/**

	* Sets the maximum length of the password. The user will not be able to enter

	* more than this number of characters/keys

	*

	* @param	set the max length

	*/

	IMPORT_C void SetMaxPasswordLength( TInt aLength );

	/** 

	* Access the maximum password length

	*

	* @return the maximum length

	*/

	IMPORT_C TInt MaxPasswordLength() const;

    /**

    *  From CCoeControl

    */

    IMPORT_C void HandlePointerEventL(const TPointerEvent& aPointerEvent);

protected:

	/**

	* Implementation of CAknSettingPage framework method

	* Called when the client's value is updated. Frequency of calling depends 

	* upon the flag passed to ExecuteLD()

	*

	*/

	IMPORT_C virtual void UpdateSettingL();

	/** 

	* Implementation of CAknSettingPage framework method

	* Perform necessary operations when the user accepts. 

	* Default implementation has password checking 

	*/

	IMPORT_C virtual void AcceptSettingL();

	/**

	* Acts upon changes in the hosted control's state. 

	*

	* @param	aControl	The control changing its state (not used)

	* @param	aEventType	The type of control event 

	*/

	IMPORT_C virtual void HandleControlEventL(CCoeControl* aControl, TCoeEvent aEventType );	

	/** 

	* Implementation of CAknSettingPage framework method

	*  

	* Method called after full construction and activation of the setting page

	*/

	IMPORT_C virtual void PostDisplayInitL();

	/** 

	* Implementation of CAknSettingPage framework method

	* Called after display of the setting page, but before the start of the 

	* setting page "waiting".  

	*

	* If overidden, would normally hold a query.

	*

	* @return	ETrue if OK to carry on; EFalse if setting it to be abandoned

	*

	*/

	IMPORT_C virtual TBool PostDisplayCheckL();

	/** 

	* Implementation of CAknSettingPage framework method

	*

	*/

	IMPORT_C virtual TBool OkToExitL(TBool aAccept);

	/** 

	* Implementation of CCoeControl framework method

	* Called when the control has its size changed

	*/

	IMPORT_C virtual void SizeChanged();

	/** 

	* Implementation of CCoeControl framework method

	* Called when required to draw

	*/

	IMPORT_C void Draw(const TRect& aRect) const;

	/**

	* Only implemented in the derived classes

	* Updates the text in the referenced password descriptor using a utility routine.

	*

	*/

	virtual void UpdateTextL() = 0;

	/**

	* Framework for password handling

	* Called when the old password is to be confirmed

	* @param	aPassword	old password

	* @param	aResourceId	AVKON_PASSWORD_CONFIRMATION id to use

	*/

	IMPORT_C virtual TBool ExecuteOldPasswordConfirmationL(const TDesC& aPassword, TInt aPasswordConfirmationResourceId );

	/**

	* Framework for password handling

	* Called when the new password is to be confirmed

	* @param	aPassword	new password

	* @param	aResourceId	AVKON_PASSWORD_CONFIRMATION id to use

	*/

	IMPORT_C virtual TBool ExecuteNewPasswordConfirmationL(const TDesC& aPassword, TInt aPasswordConfirmationResourceId );

	/**

	* Framework for password handling

	* Called to compare the two passwords

	* @param	reference (old) password

	* @param	candidate password; password just entered

	*/

	IMPORT_C virtual TInt ComparePasswords( const TDesC& aRefPassword, const TDesC& aCandidatePassword, TAknPasswordMatchingMode ) const;

	/**

	* Utility method

	* Access to the old password confirmation resource

	* @return	id for AVKON_PASSWORD_CONFIRMATION structure

	*/

	IMPORT_C TInt OldPasswordConfirmationResourceId() const;

	/**

	* Utility method

	* Access to the new password confirmation resource

	* @return	id for AVKON_PASSWORD_CONFIRMATION structure

	*/

	IMPORT_C TInt NewPasswordConfirmationResourceId() const;

	/**

	* Utility method

	* Read in the confirmation resource structure

	* @param	aPasswordResourceId		id to use

	* @param	aResourceGroup		structure to fill

	*/

	IMPORT_C void ReadConfirmationResourceL( TInt aPasswordResourceId, SAknConfirmationResource& aResourceGroup );

	/**

	* Utility method

	* Run the password confirmation

	*/

	IMPORT_C TBool DoPasswordConfirmationL(const TDesC& aPassword, TInt aPasswordConfirmationResourceId, TAknPasswordMatchingMode aMatchMode, TInt& aTries );

	/**

	* Utility method

	* Access to new password candidate

	*/

	IMPORT_C TDes& NewPassword() const;

	/**

	* Utility method

	* Access to old password

	*/

	IMPORT_C const TDesC& OldPassword() const;

//

// 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:

	TDes& iNewPassword;

	const TDesC& iOldPassword;

	TInt iOldPasswordConfirmationResourceId;

	TInt iNewPasswordConfirmationResourceId;

	TAknPasswordMatchingMode iMatchingMode;

	TInt iMaxPasswordLength;

	TAknLayoutRect iSecretEditorLayoutRect;

	TAknLayoutRect iHorizontalShadow;

	TAknLayoutRect iVerticalShadow;

	TAknLayoutRect iOutlineFrame;

	TInt iSpare_1;

};

/** 

 *

 * This class is used for alphanumeric passwords

 *

 */

class CAknAlphaPasswordSettingPage : public CAknPasswordSettingPage

{

public:

	/**

	 * Simple constructor depending only on a single resource Id and the new and old password.

	 * Editor resource is given via the link in the setting page resource. 

	 *

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

	 * @param aNewPassword

	 * @param aOldPassword					password to be checked against

	 */

	IMPORT_C CAknAlphaPasswordSettingPage(

		TInt aResourceID, 

		TDes& aNewPassword, 

		const TDesC& aOldPassword);

	/**

	 * 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.

	 * This descriptor must be owned by the client since not copy is taken until ExecuteLD()

	 *

	 * 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 aNewPassword			Descriptor for the new password

	 * @param aOldPassword			Descriptor for the old password

	 */

	IMPORT_C CAknAlphaPasswordSettingPage(	const TDesC* aSettingTitleText, 

								TInt aSettingNumber, 

								TInt aControlType,

								TInt aEditorResourceId, 

								TInt aSettingPageResourceId,	

								TDes& aNewPassword, 

								const TDesC& aOldPassword );

	/**

	*

	* 2nd stage construction.  This uses stored values from the constructor to allocate the 

	* required aggregate objects, and then set the Date value. 

	*

	*/

	IMPORT_C virtual void ConstructL();

	/**

	* Type specific access to hosted editor

	* @return	the hosted (alpha secret) editor

	*/

	IMPORT_C CEikSecretEditor* AlphaPasswordEditor();

    /**

     * From CCoeControl.     

     * Handles pointer events

     * @param aPointerEvent     The pointer event.

     */	 

    IMPORT_C void HandlePointerEventL(const TPointerEvent& aPointerEvent);

protected:

	/**

	* Destructor

	*/

	IMPORT_C virtual ~CAknAlphaPasswordSettingPage();

    /**

	* From CAknPasswordSettingPage - Implemented in this class

	* Copy text from the editor to the client's descriptor

	*/

	IMPORT_C virtual void UpdateTextL();

	/**

	* Framework for password handling

	* Called to compare the two passwords

	* @param	reference (old) password

	* @param	candidate password; password just entered

	*/

	IMPORT_C virtual TInt ComparePasswords( const TDesC& aRefPassword, const TDesC& aCandidatePassword, TAknPasswordMatchingMode ) const;

//

// 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: