/*

* 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: 

*

*/

// AknQueryValueNumber.h

//

// Copyright (c) 2001 Symbian Ltd.  All rights reserved.

//

#if !defined(__AKNQUERYVALUENUMBER_H__)

#define __AKNQUERYVALUENUMBER_H__

#include <bamdesca.h>

#include <eikdialg.h>

#include "AknQueryValue.h"

class CAknQueryValueNumberArray;

/**

 * Encapsulates a TInt. Provides an interface to create a dialog

 * containing a number query control, which will edit the value. Optionally 

 * allows the value to be changed by selecting from a list of values. 

 *

 */

NONSHARABLE_CLASS(CAknQueryValueNumber) : public CAknQueryValue

    {

public:

    /**

     * First stage of two stage construction.

     *

    */

	IMPORT_C static CAknQueryValueNumber* NewL();

    /**

     * First stage of two stage construction.

     *

    */

	IMPORT_C static CAknQueryValueNumber* NewLC();

    IMPORT_C virtual ~CAknQueryValueNumber();

	/**

     * Set the array.

     * 

     * @param aArray pointer to array, ownership is not passed

    */

	IMPORT_C void SetArrayL(const CAknQueryValueNumberArray* aArray);

    /**

     * Set the string used for the query caption to be a string other than the default.

     *

     * @param aResourceId		resource id of string to use for caption.

     *

    */

	IMPORT_C void SetQueryCaption(TInt aResourceId);

    /**

     * Return the current value, which may have been set by the user

     *

     * @return The current value

     *

    */

	IMPORT_C TInt Value() const;

public: // from MAknQueryValue

    IMPORT_C virtual const MDesCArray* MdcArray() const;       

    IMPORT_C virtual HBufC* CurrentValueTextLC();    

    IMPORT_C virtual TInt CurrentValueIndex() const;     

    IMPORT_C virtual void SetCurrentValueIndex(const TInt aIndex);    

    IMPORT_C virtual TBool CreateEditorL();

protected:

	CAknQueryValueNumber();

    /**

     * 2nd stage construction.

     *

    */

	void ConstructL();

	/**

     * Search for the current value in the list, and set the curent index 

     * to be the found index. If not found, set current index to 1 after the size of the array.

     *

    */

	void CalculateCurrentIndex();

	virtual void AppendValueIfNewL();

private: // from MAknQueryValue

	IMPORT_C void Reserved_MAknQueryValue();

private:

	// the following are member variables

	TInt iQueryCaptionId;

	TInt iNumber;

	TInt iCurrentIndex;

	// the following are not owned

	const CAknQueryValueNumberArray* iArray;

    };

/**

 * Wraps an array of numeric values, adapts it into a descriptor array.

 *

 */

NONSHARABLE_CLASS(CAknQueryValueNumberArray) : public CBase, public MDesCArray

	{

public:

    /**

     * Typedef for array containing TInt items

     *

    */

	typedef CArrayFix<TInt> NumberArray;

	enum {KSafeSizeOfDescriptorForNumberFormat = 32};

public:

    /**

     * Two-phased constructor..

     *

     * @param aResourceId	Recource id of a TBUF containing a number format string. Client

     *							can use R_AVKON_TBUF_POPUP_FIELD_DEFAULT_NUMBER_FORMAT

     *							if desired, or provide its own resource. 

    */

	IMPORT_C static CAknQueryValueNumberArray* NewL(TInt aResourceId);

    /**

     * See NewL

     *

    */	

	IMPORT_C static CAknQueryValueNumberArray* NewLC(TInt aResourceId);

	IMPORT_C ~CAknQueryValueNumberArray();

	/**

     * Set the array of values. 

     * Note that client can use any implementation of array class, but must pass in a 

     * TArray generated from it (by calling the Array() method on the array class)

     *

     * @param aArray    array of values, ownership is not passed

    */

	IMPORT_C void SetArray(NumberArray& aArray);

	/**

     * Get the array of values as a TArray. 

     * Note that client can use any implementation of array class, but the array is 

     * treated as a TArray.

     *

     * @return array of values, ownership is not passed

    */

	IMPORT_C NumberArray* Array() const;

	/**

     * Return the TTime format string that is used to generate MDesCArray values

     *

     * @return format string

    */

	IMPORT_C const HBufC* FormatString() const;

    /**

     * Return the size of a maximal time string formated using the format string 

     * that was supplied during construction of this instance.

     * Two versions to eliminate compiler warnings.

     *

     * @return length of formatted string.

    */

#ifdef __WINS__

	IMPORT_C const TInt FormattedStringSize() const;

#else

	IMPORT_C TInt FormattedStringSize() const;

#endif // __WINS__

public:

	// from MDesCArray

	/**

     * @return count of contained array

     *

    */

    IMPORT_C virtual TInt MdcaCount() const;

    /**

     * Returns array element, converting value to text. 

     * <p> WARNING: the returned pointer is only valid until the next time this

     * method is invoked. 

     *

     * @param aIndex   index of element to return

     * @return descriptor representing array element, ownership is not passed

    */

    IMPORT_C virtual TPtrC MdcaPoint(TInt aIndex) const;

protected:

	CAknQueryValueNumberArray();

	/**

     * ConstructL

     *

     * @param aResourceId	id of a resource containing a time format string

    */

	void ConstructL(TInt aResourceId);

private:

	// the following members are owned

	HBufC* iLastGeneratedTextValue;

	HBufC* iFormatString;

	// the following members are not owned

	NumberArray* iArray;

	TInt iFormattedStringSize;

	};

#endif // __AKNQUERYVALUENUMBER_H__