1 /*

     2 * Copyright (c) 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:

    15 *

    16 */

    17 #ifndef CXEIMAGEDATAQUEUE_H

    18 #define CXEIMAGEDATAQUEUE_H

    19 

    20 #include <QObject> 

    21 

    22 class CxeImageDataItem;

    23 

    24 class QImage;

    25 

    26 /**

    27  * CxeImageDataQueue is responsible managing a queue of objects that are saved to

    28  * the file system in the background

    29  */

    30 class CxeImageDataQueue : public QObject

    31 {

    32     Q_OBJECT

    33 public:

    34     /**

    35      * Get the number of objects in the queue.

    36      *

    37      * @return The number of items in the queue

    38      */

    39     virtual int size() const = 0;

    40 

    41     /**

    42      * Clear the queue, cancel the current save operation (if any) and destroy

    43      * all unsaved objects

    44      */

    45     virtual void clear() = 0;

    46 

    47     //virtual void deleteImage( int index ) = 0;

    48     //virtual void renameImage( int index, const QString& path ) = 0;

    49 

    50     /**

    51      * Access individual items in the queue.

    52      *

    53      * @param index Item index. Must be 0 <= index < size()

    54      * @return Reference to the item

    55      */

    56     virtual CxeImageDataItem &operator[]( int index ) = 0;

    57 

    58 signals:

    59 

    60     void fileSaved( int index, int error ); // index, error

    61 

    62 protected:

    63     CxeImageDataQueue() {}

    64 

    65 private:

    66     Q_DISABLE_COPY( CxeImageDataQueue )

    67 };

    68 

    69 #endif // CXEIMAGEDATAQUEUE_H