/*

* 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: 

*     Icon array helper class

*

*

*/

#ifndef     __AKNICONARRAY_H__

#define     __AKNICONARRAY_H__

//  INCLUDES

#include <e32base.h>

//  FORWARD DECLARATIONS

class CGulIcon;

class TResourceReader;

// CLASS DECLARATION

/**

 * Icon array helper class. Extends CArrayPtrFlat<CGulIcon> to make it easier

 * to load icons for a listbox. This class IS-A CArrayPtrFlat<CGulIcon>, but 

 * owns the CGulIcons it contains for leave-safety.

 */

class CAknIconArray : public CArrayPtrFlat<CGulIcon>

    {

    public:  // Constructors and destructor

        /**

         * C++ Constructor.

         */

        IMPORT_C CAknIconArray(TInt aGranurality);

        /**

         * Second phase constructor: loads contents of array from resources.

         *

         * @param aResId    id of a AKN_ICON_ARRAY resource.

         */

        IMPORT_C void ConstructFromResourceL(TInt aResId);

        /**

         * Second phase constructor: loads contents of array from resources.

         *

         * @param aReader   resource reader pointed to a 

         *                  AKN_ICON_ARRAY resource.

         */

        IMPORT_C void ConstructFromResourceL(TResourceReader& aReader);

        /**

         * Destructor. Destroys all icons in the array.

         */

        IMPORT_C ~CAknIconArray();

    public:  // interface

        /**

         * Append icons from a resource to this array.

         *

         * @param aResId    id of a AKN_ICON_ARRAY resource.

         */

        IMPORT_C void AppendFromResourceL(TInt aResId);

        /**

         * Append icons from a resource to this array.

         *

         * @param aReader   resource reader pointed to a 

         *                  AKN_ICON_ARRAY resource

         */

        IMPORT_C void AppendFromResourceL(TResourceReader& aReader);

	private: // implementation 

		/**

		 * Search for bitmap file on all connected drives

		 *

		 * Read bitmap file name from resource. This may or may

		 * not have a drive specified. If the drive has been specified,

		 * the bitmap file is first searched in that drive.

         * Otherwise, the drive search order is from y: to a: and then z:

         * as the last drive. Therefore, ROM apps should

		 * hard code the Z: drive in order to improve performance. 

		 *

		 * Security warning: third parties can replace the bitmap files

		 * by adding another file, with the same name and path, on a 

		 * drive which has a letter higher than the drive the existing

		 * file is installed on (e.g. file on MMC drive overrides file

		 * on C: drive). This can be prevented by hard-coding the drive

		 * letter. 

		 *

		 * Leave with KErrNotFound if the file specified is not found on

		 * any connected drive

		 *

		 * @param aReader   resource reader pointed to a 

         *                  AKN_ICON_ARRAY resource

		 *

		 * @return			The bitmap file name

		 */

		 HBufC* GetBmpNameLC(TResourceReader& aReader);

    };

#endif  // __AKNICONARRAY_H__

// End of File