diff -r 896e9dbc5f19 -r 065198191975 qtinternetradio/ui/src/irchanneldataprovider.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/qtinternetradio/ui/src/irchanneldataprovider.cpp	Thu Sep 02 20:17:46 2010 +0300
@@ -0,0 +1,275 @@
+/*
+* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies). 
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description:
+*
+*/
+
+#include <HbIcon>
+#include <QTimer>
+
+#include "irchanneldataprovider.h"
+#include "irqisdsdatastructure.h"
+#include "irqisdsclient.h"
+#include "irsearchresultdb.h"
+
+const int KBitmapSize = 59;
+const int KDownloadLogoInterval = 10; //msec
+
+IRChannelDataProvider::IRChannelDataProvider(QObject *aParent) : HgDataProviderModel(aParent),
+                       iChannelList(NULL), iLogoPreset(NULL), iActivated(false)
+{
+    iDefaultLogo = HbIcon("qtg_large_internet_radio");
+    
+    iLogoDownloadTimer = new QTimer(this);
+    iLogoDownloadTimer->setInterval(KDownloadLogoInterval);
+    connect(iLogoDownloadTimer, SIGNAL(timeout()), this, SLOT(downloadNextLogo()));
+    
+    iIsdsClient = IRQIsdsClient::openInstance();
+}
+
+IRChannelDataProvider::~IRChannelDataProvider()
+{
+    if (iIsdsClient)
+    {
+        iIsdsClient->closeInstance();
+        iIsdsClient = NULL;
+    }
+    
+    delete iLogoPreset;
+    iLogoPreset = NULL;
+    
+    clearAndDestroyItems();
+    clearAndDestroyLogos();
+}
+
+void IRChannelDataProvider::activate()
+{
+    iActivated = true;
+    connect(iIsdsClient, SIGNAL(presetLogoDownloaded(IRQPreset* )),
+            this, SLOT(presetLogoDownload(IRQPreset* )));
+    connect(iIsdsClient, SIGNAL(presetLogoDownloadError()),
+            this, SLOT(presetLogoDownloadError()));
+    
+    if (iRequestedItems.count() > 0)
+    {
+        iLogoDownloadTimer->start();
+    }
+}
+
+void IRChannelDataProvider::deactivate()
+{
+    iActivated = false;
+    disconnect(iIsdsClient, SIGNAL(presetLogoDownloaded(IRQPreset*)),
+               this, SLOT(presetLogoDownload(IRQPreset* )));
+    disconnect(iIsdsClient, SIGNAL(presetLogoDownloadError()),
+               this, SLOT(presetLogoDownloadError()));
+    
+    iRequestedItems.clear();
+    iIsdsClient->isdsLogoDownCancelTransaction();
+    iLogoDownloadTimer->stop();
+}
+
+IRQChannelItem* IRChannelDataProvider::getChannelItemByIndex(int aIndex)
+{
+    if( aIndex < 0 || aIndex >= iChannelList->count() )
+    {
+        return NULL;
+    }
+    
+    return iChannelList->at(aIndex);
+}
+
+void IRChannelDataProvider::doReleaseData(QList<int> aList, bool aSilent)
+{
+    Q_UNUSED(aSilent);
+    iIsdsClient->isdsLogoDownCancelTransaction();
+    iLogoDownloadTimer->stop();
+    
+    int count = aList.count();
+    int index = 0;
+    for (int idx = 0; idx < count; ++idx)
+    {
+        index = aList[idx];
+        releasePixmap(index);
+        //if the index is saved in iRequestedItems, remove it
+        iRequestedItems.removeOne(index);
+    }
+}
+
+void IRChannelDataProvider::doRequestData(QList<int> aList, bool aSilent)
+{
+    Q_UNUSED(aSilent);
+    int count = aList.count();
+    int index = 0;
+    for (int idx = 0; idx < count; ++idx)
+    {
+        index = aList[idx];
+        if (index < iChannelList->count())
+        {
+            if (iChannelList->at(index)->imageURL != "")
+            {
+                if (NULL == iLogos[index])
+                {
+                    //logo is not downloaded, add to requested items
+                    iRequestedItems.append(index);
+                }
+                else
+                {
+                    //logo is already downloaded, update icon
+                    updateIcon(index, *iLogos[index]);
+                }
+            }
+        }
+    }
+    
+    if (iActivated && iRequestedItems.count() > 0)
+    {
+        iLogoDownloadTimer->start();
+    }
+}
+
+QVariant IRChannelDataProvider::defaultIcon() const
+{
+    return iDefaultLogo;
+}
+
+void IRChannelDataProvider::doResetModel()
+{
+    int count = iChannelList->count();
+    for (int i = 0; i < count; ++i)
+    {
+        QList< QPair< QVariant, int > > item;
+        QVariantList list;
+        list.append(iChannelList->at(i)->channelName);
+        QString tempDes = iChannelList->at(i)->shortDescription;        
+        if( 0 == tempDes.length() )
+        {
+            tempDes = " ";
+        }
+        list.append(tempDes); 
+        item.append( QPair<QVariant, int>(list, Qt::DisplayRole));
+        
+        newItem(&item);
+    }
+}
+
+//data received from ISDS server, add items
+void IRChannelDataProvider::updateData(QList<IRQChannelItem*> *aPushItemsList)
+{
+    if (NULL == aPushItemsList)
+    {
+        return;
+    }
+    
+    if (iChannelList != aPushItemsList)
+    {
+        clearAndDestroyItems();
+        clearAndDestroyLogos();
+        
+        iChannelList = aPushItemsList;
+        iRequestedItems.clear();
+        clearCache();
+        resetModel();
+        emit dataAvailable();
+    }
+}
+
+void IRChannelDataProvider::presetLogoDownload(IRQPreset* aPreset)
+{
+    if( NULL == aPreset )
+    {
+        presetLogoDownloadError();
+        return;
+    } 
+    
+    delete iLogoPreset;            
+    iLogoPreset = aPreset;    
+
+    if (iLogoPreset->logoData != KNullDesC8)
+    {         
+        QPixmap tempMap;  
+        const unsigned char * logoData = iLogoPreset->logoData.Ptr();     
+        bool ret = tempMap.loadFromData(logoData, iLogoPreset->logoData.Length());
+       
+        if( ret )
+        {            
+            QIcon convertIcon(tempMap);
+            HbIcon *hbIcon = new HbIcon(convertIcon);
+            int index = iRequestedItems[0];
+            iLogos[index] = hbIcon;
+            updateIcon(index, *hbIcon);
+            iRequestedItems.removeAt(0); 
+            if ( iRequestedItems.count() > 0 )
+            {
+                iLogoDownloadTimer->start();  
+            }
+            return;
+        }     
+    }    
+    
+    presetLogoDownloadError(); 
+}
+
+void IRChannelDataProvider::presetLogoDownloadError()
+{
+    // if the logo download fails, try to download the next
+    iRequestedItems.removeAt(0);
+    if ( iRequestedItems.count() > 0 )
+    {
+        iLogoDownloadTimer->start();
+    }   
+}
+
+void IRChannelDataProvider::downloadNextLogo()
+{
+    iLogoDownloadTimer->stop();
+    
+    if (iRequestedItems.count() > 0)
+    {
+        startDownloading(iRequestedItems[0]);   
+    }
+}
+
+void IRChannelDataProvider::startDownloading(int aIndex)
+{
+    QString url = iChannelList->at(aIndex)->imageURL;
+    IRQPreset tempPreset;
+    tempPreset.imgUrl = url;
+    tempPreset.type = IRQPreset::EIsds;
+    
+    iIsdsClient->isdsLogoDownSendRequest(&tempPreset, 0, KBitmapSize, KBitmapSize); 
+}
+
+void IRChannelDataProvider::clearAndDestroyItems()
+{
+    if (iChannelList)
+    {
+        for (QList<IRQChannelItem*>::iterator it = iChannelList->begin(); it != iChannelList->end(); ++it)
+        {
+            delete *it;
+        }
+        delete iChannelList;
+        iChannelList = NULL;
+    }
+}
+
+void IRChannelDataProvider::clearAndDestroyLogos()
+{
+    for (QMap<int, HbIcon*>::iterator it = iLogos.begin(); it != iLogos.end(); ++it)
+    {
+        delete it.value();
+    }
+    
+    iLogos.clear();
+}