/*

* 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: 

*      This file defines the CAknColourSelectionGrid class

*

*/

#ifndef __AKNCOLOURSELECTIONGRID_H

#define __AKNCOLOURSELECTIONGRID_H

//  INCLUDES

#include <e32base.h>

#include <AknDialog.h>

#include <eiklbo.h>

#include <coecobs.h>

// FORWARD DECLARATIONS

class CColorGrid;

class CNoneField;

class CAknGrid;

class CAknColourSelectionGridExtension;

// CLASS DECLARATION

/**

* Colour selection grid

*

* This class can be used when application offers to user

* possibility to choose colour. There is also possibility to select

* nothing.

*

* use example:

*

* TBool noneExist = ETrue;

* TBool noneChosen = EFalse;

* TRgb  colour = KRgbDarkGray;

* CArrayFixFlat<TRgb>* colours = new(ELeave) CArrayFixFlat<TRgb>(6);

*

* colours->AppendL(KRgbBlack);

* colours->AppendL(KRgbDarkGray);

*

*   CAknColourSelectionGrid *d = CAknColourSelectionGrid::NewL(

*                                                 colours,

*                                                 noneExist,

*                                                 noneChosen,

*                                                 colour);

*

*   d->ExecuteLD();

*

*

*  @lib avkon

*  @since 2.0

*/

NONSHARABLE_CLASS(CAknColourSelectionGrid) : public CAknDialog, public MEikListBoxObserver

    {

    public:  // Constructors and destructor

        /**

        * Two-phased constructor.

        *

        * NewL() Creates dialog

        *

        * @since 2.0

        *

        * @param aColours array of colors for grid

        *

        * @param aNoneExist boolean flag does none exist in dialog

        *

        * @param aNoneChosen Dialog sets boolean value is none chosen

        * If value is EFalse in start, some colour will be active in start

        *

        * @param aColourChosen Dialog sets the value of color chosen

        * If starting value aNoneChosen is EFalse, starting value of

        * aColours tells witch colour is active when grid starts

        *

        */

        IMPORT_C static CAknColourSelectionGrid* NewL(

                            CArrayFixFlat<TRgb> *aColours,

                            TBool aNoneExist,

                            TBool& aNoneChosen,

                            TRgb& aColourChosen);

        /**

        * ExecuteLD() runs dialog, waits user to make his choise

        * and destroys dialog

        *

        * @since 2.0

        */

        IMPORT_C TBool ExecuteLD();

    private: // Constructor

        /**

        * C++ default constructor.

        */

        CAknColourSelectionGrid();

    public: // Destructor

        /**

        * Destructor

        */

        IMPORT_C ~CAknColourSelectionGrid();

    private: // New functions

        /**

        * Grid() returns control to grid

        *

        * @since 2.0

        * @return Control to grid

        */

        CAknGrid *Grid() const;

    private: // Functions from base classes

        /**

        * From CAknDialog.

        *

        * Handles key events

        *

        * @since 2.0

        * @param aKeyEvent

        * @param aType

        * @return was the key event handled

        */

        TKeyResponse OfferKeyEventL(const TKeyEvent& aKeyEvent,TEventCode aType) ;

        /**

        * From CAknDialog.

        *

        * If ok is pressed, writes values for iColorChosen and iNoneChosen

        *

        * @since 2.0

        * @param aKeycode

        * @return allways ETrue

        */

        TBool OkToExitL(TInt aKeycode);

        /**

        * From CEikDialog

        * @since 2.0

        */

        void  PreLayoutDynInitL();

        /**

        * From CEikDialog

        * @since 2.0

        */

        void  PostLayoutDynInitL();

        /**

        * From CEikDialog

        * @since 2.0

        * @param aControlType

        * @return created control

        */

        SEikControlInfo CreateCustomControlL(TInt aControlType);

        /**

        * From CEikDialog

        * @since 2.0

        * @param aSize not in use

        */

        virtual void SetSizeAndPosition(const TSize& aSize);

        /**

        * From CCoeControl

        * @since 2.0

        */

        virtual void ActivateL();

        /**

        * From MEikListBoxObserver

        * Handles list box events

        * @param aListBox pointer to observed listbox

        * @param aEventType Event to be handled

        */

        void HandleListBoxEventL(CEikListBox* aListBox, TListBoxEvent aEventType);

    public:

        /**

        * From MCoeControlObserver

        * Handles control events from nonebutton.

        * @param aControl Pointer to observed control

        * @param aEventType type of event to be handled

        */

        void HandleControlEventL(CCoeControl* aControl,TCoeEvent aEventType);

        /**

        * From MDialogPageObserver

        * Handles dialogpage events

        * @param aEventID event to be handled

        */

        void HandleDialogPageEventL(TInt aEventID);

        /**

        * From CoeControl

        * @since 3.2

        * Handles pointer events

        */

        IMPORT_C void HandlePointerEventL(const TPointerEvent& aPointerEvent);

    private: // Data

        CColorGrid* iGrid;

        CNoneField* iNoneBox;

        TInt iIndex;

        CFbsBitmap* iBitmap;

        TBool iNoneExist;

        TBool* iNoneChosen;

        TRgb* iColourChosen;

        CArrayFixFlat<TRgb>* iColours;

        TInt iWsBufferRequestID;

        CAknColourSelectionGridExtension *iExtension;

    };

#endif  // __AKNCOLOURSELECTIONGRID_H