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 /**

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

    23  */

    24 

    25 #ifndef M_GLXTNVOLUMEDATABASEOBSERVER_H

    26 #define M_GLXTNVOLUMEDATABASEOBSERVER_H

    27 

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

    29 

    30 /**

    31  * Typesafe thumbnail ID.

    32  */

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

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

    35 

    36 /**

    37  * Interface to receive callbacks from a CGlxtnVolumeDatabase.

    38  *

    39  * @author Dan Rhodes

    40  * @ingroup glx_thumbnail_creator

    41  */

    42 class MGlxtnVolumeDatabaseObserver

    43     {

    44 public:

    45     /**

    46     * Called when a database operation cannot be completed.

    47     * @param aError Error code.

    48     */

    49     virtual void HandleDatabaseError(TInt aError) = 0;

    50     /**

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

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

    53     */

    54     virtual void HandleThumbnailIdFromMediaIdL(

    55                                     const TGlxtnThumbnailId& aThumbId ) = 0;

    56     /**

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

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

    59     */

    60     virtual void HandleThumbnailIdFromFilenameL(

    61                                     const TGlxtnThumbnailId& aThumbId ) = 0;

    62     /**

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

    64     */

    65     virtual void HandleThumbnailIdStoredL() = 0;

    66     /**

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

    68     * @param aFormat Thumbnail data format.

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

    70     */

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

    72     /**

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

    74     */

    75     virtual void HandleThumbnailStored() = 0;

    76     /**

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

    78     */

    79     virtual void HandleMediaIdDeletedL() = 0;

    80     /**

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

    82     */

    83     virtual void HandleThumbnailsDeletedL() = 0;

    84     /**

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

    86     */

    87     virtual void HandleItemDeletedL() = 0;

    88     /**

    89     * Called when availability has been chaecked.

    90     * @param aResult The result of the check.

    91     */

    92     virtual void HandleAvailabilityChecked(TInt aResult) = 0;

    93     /**

    94     * Called after the database has been cleaned up.

    95     */

    96     virtual void HandleDatabaseCleanedL() = 0;

    97     };

    98 

    99 #endif  // M_GLXTNVOLUMEDATABASEOBSERVER_H