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 

    18 

    19 

    20 #ifndef AUTOSAVER_H

    21 #define AUTOSAVER_H

    22 

    23 #include <QtCore/QObject>

    24 #include <QtCore/QBasicTimer>

    25 #include <QtCore/QTime>

    26 #include "wrttypes.h"

    27 

    28 namespace WRT {

    29 

    30 /*

    31     This class will call the save() slot on the parent object when the parent changes.

    32     It will wait several seconds after changed() to combining multiple changes and

    33     prevent continuous writing to disk.

    34   */

    35 class AutoSaver : public QObject {

    36 

    37 Q_OBJECT

    38 

    39 public:

    40     AutoSaver(QObject *parent);

    41     ~AutoSaver();

    42     virtual void saveIfNeccessary()=0;

    43   

    44 public slots:

    45     void changeOccurred();

    46     

    47 protected:

    48     void timerEvent(QTimerEvent *event);

    49 

    50 protected:

    51     QBasicTimer m_timer;

    52     QTime m_firstChange;

    53 };

    54 

    55 class BookmarkAutoSaver : public AutoSaver {

    56 

    57 Q_OBJECT

    58 

    59 public:

    60      BookmarkAutoSaver(QObject *parent);

    61     ~BookmarkAutoSaver();

    62      void saveIfNeccessary();

    63 };

    64 

    65 

    66 class HistoryAutoSaver : public AutoSaver {

    67 

    68 Q_OBJECT

    69 

    70 public:

    71      HistoryAutoSaver(QObject *parent);

    72     ~HistoryAutoSaver();

    73     void saveIfNeccessary();

    74 };

    75 

    76 }

    77 #endif // AUTOSAVER_H

    78