1 /*

     2 * Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:   Definition of CGlxtnVolumeDatabase

    15 *

    16 */

    17 

    18 

    19 

    20 /**

    21  * @internal reviewed 30/07/2007 by Simon Brooks

    22  */

    23 

    24 #ifndef M_GLXTNVOLUMEDATABASEOBSERVER_H

    25 #define M_GLXTNVOLUMEDATABASEOBSERVER_H

    26 

    27 #include "glxtnstd.h"   // For TGlxImageDataFormat

    28 

    29 /**

    30  * Typesafe thumbnail ID.

    31  */

    32 class TGlxtnThumbnailIdTypeBase {};     // Don't use this

    33 typedef TGlxId<TGlxtnThumbnailIdTypeBase> TGlxtnThumbnailId;    // Use this

    34 

    35 /**

    36  * Interface to receive callbacks from a CGlxtnVolumeDatabase.

    37  *

    38  * @author Dan Rhodes

    39  * @ingroup glx_thumbnail_creator

    40  */

    41 class MGlxtnVolumeDatabaseObserver

    42     {

    43 public:

    44     /**

    45     * Called when a database operation cannot be completed.

    46     * @param aError Error code.

    47     */

    48     virtual void HandleDatabaseError(TInt aError) = 0;

    49     /**

    50     * Called when a thumbnail ID has been found in the Ids table.

    51     * @param aThumbId Thumbnail ID for the media item.

    52     */

    53     virtual void HandleThumbnailIdFromMediaIdL(

    54                                     const TGlxtnThumbnailId& aThumbId ) = 0;

    55     /**

    56     * Called when a thumbnail ID has been found in the Items table.

    57     * @param aThumbId Thumbnail ID for the media item.

    58     */

    59     virtual void HandleThumbnailIdFromFilenameL(

    60                                     const TGlxtnThumbnailId& aThumbId ) = 0;

    61     /**

    62     * Called when a thumbnail ID has been saved in the Ids table.

    63     */

    64     virtual void HandleThumbnailIdStoredL() = 0;

    65     /**

    66     * Called when a thumbnail has been found in the Thumbnails table.

    67     * @param aFormat Thumbnail data format.

    68     * @param aData Thumbnail binary data (ownership passed).

    69     */

    70     virtual void HandleThumbnail(TGlxImageDataFormat aFormat, HBufC8* aData) = 0;

    71     /**

    72     * Called when a thumbnail has been saved in the Thumbnails table.

    73     */

    74     virtual void HandleThumbnailStored() = 0;

    75     /**

    76     * Called when a record has been deleted from a Ids table.

    77     */

    78     virtual void HandleMediaIdDeletedL() = 0;

    79     /**

    80     * Called when records have been deleted from a Thumbnails table.

    81     */

    82     virtual void HandleThumbnailsDeletedL() = 0;

    83     /**

    84     * Called when a record has been deleted from a Items table.

    85     */

    86     virtual void HandleItemDeletedL() = 0;

    87     /**

    88     * Called when availability has been chaecked.

    89     * @param aResult The result of the check.

    90     */

    91     virtual void HandleAvailabilityChecked(TInt aResult) = 0;

    92     /**

    93     * Called after the database has been cleaned up.

    94     */

    95     virtual void HandleDatabaseCleanedL() = 0;

    96     };

    97 

    98 #endif  // M_GLXTNVOLUMEDATABASEOBSERVER_H