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 #ifndef IRCHANNELDATAPROVIDER_H

    19 #define IRCHANNELDATAPROVIDER_H

    20 

    21 #include <hgwidgets/hgdataprovidermodel.h>

    22 

    23 class IRQChannelItem;

    24 class IRQPreset;

    25 class IRQIsdsClient;

    26 

    27 const int KCacheSize = 50;

    28 const int KCacheThreshold = 20;

    29 

    30 class IRChannelDataProvider : public HgDataProviderModel

    31 {

    32 Q_OBJECT

    33     

    34 public:

    35     IRChannelDataProvider(QObject *aParent);

    36     ~IRChannelDataProvider();

    37     

    38     void activate();

    39     void deactivate();

    40     IRQChannelItem* getChannelItemByIndex(int aIndex);

    41     

    42 signals:

    43     void dataAvailable();

    44 

    45 protected:

    46     //from HgDataProviderModel

    47     void doReleaseData(QList<int> aList, bool aSilent);

    48     void doRequestData(QList<int> aList, bool aSilent);  

    49     QVariant defaultIcon() const;  

    50     void doResetModel();

    51     

    52 private slots:

    53     void updateData(QList<IRQChannelItem*> *aPushItemsList);

    54     void presetLogoDownload(IRQPreset* aPreset);

    55     void presetLogoDownloadError();

    56     void downloadNextLogo();

    57     

    58 private:

    59     void startDownloading(int aIndex);

    60     void clearAndDestroyItems();

    61     void clearAndDestroyLogos();

    62     

    63 private:

    64     QList<IRQChannelItem*> *iChannelList;

    65     QVariant iDefaultLogo;

    66     QMap<int, HbIcon*>     iLogos;  //save the downloaded logos

    67     QList<int> iRequestedItems; //save the indexes of requested items

    68     IRQPreset *iLogoPreset;

    69     QTimer *iLogoDownloadTimer;

    70     IRQIsdsClient *iIsdsClient;

    71     

    72     bool iActivated;

    73 };

    74 

    75 #endif