hgcacheproxymodel/tsrc/fute/HgCacheProxyModelTestApp/src/mydataprovider.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Fri, 14 May 2010 16:57:01 +0300
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child 3 c863538fcbb6
permissions -rw-r--r--
Revision: 201017 Kit: 201019
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/*
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* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description:
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*
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*  Version     : %version: 1 %
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*/
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#include <QList>
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#include "hglogger.h"
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#include <hbicon.h>
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#include "mydataprovider.h"
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//#include "x:\sf\mw\qt\src\openvg\qpixmapdata_vg_p.h"
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//typedef VGImage (*pfnVgCreateEGLImageTargetKHR)(VGeglImageKHR);
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const int KItemIdRole = Qt::UserRole+1;
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const int KThumbnailsPriority = EPriorityLess; //standard priority
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MyDataProvider::MyDataProvider(QObject *parent) :
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HgDataProviderModel(parent),
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mDefaultIcon(new HbIcon(QIcon(QPixmap(":/icons/default.png")))),
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mScheduler(new CActiveSchedulerWait()),
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mWrapper( new ThumbnailManager() ),
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mThumbnailRequestPending(false),
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mThumbnailRequestIndex(-1),
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mThumbnailRequestID(-1),
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mThumbnailsize(ThumbnailManager::ThumbnailMedium),
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mMDSLoadInProgress(false)
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{
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//    TX_ENTRY
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    Q_UNUSED(parent);
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    mWrapper->setThumbnailSize( mThumbnailsize );
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    mWrapper->setQualityPreference( ThumbnailManager::OptimizeForPerformance );
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    QObject::connect( mWrapper, SIGNAL(thumbnailReady( QPixmap , void* , int, int ) ),
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                      this, SLOT( thumbnailReady( QPixmap , void* , int , int )));
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    doResetModel(); //will read mds data
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}
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MyDataProvider::~MyDataProvider()
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{
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//    TX_ENTRY
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    delete mDefaultIcon;
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    delete mWrapper;
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    delete mScheduler;
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//    TX_EXIT
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}
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void MyDataProvider::changeIconSize(ThumbnailManager::ThumbnailSize aThumbnailsize)
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{
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//    TX_ENTRY
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//	we could  remove all icons from cache and put default ones, but probably that would be waste of time, and it's better just to load new icons with correct sizes.
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	mThumbnailsize = aThumbnailsize;
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	mWrapper->setThumbnailSize( mThumbnailsize );
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//    TX_EXIT
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}
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void MyDataProvider::doRequestData(QList<int> list, bool silent)
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{
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    TX_ENTRY
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	Q_UNUSED(silent);
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    QString items = "Requested items:";
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    int i = 0;
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	for (int idx=0; idx<list.count(); idx++){
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        i = list[idx];
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		if (containsRole(i, KItemIdRole) ) {
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            items += QString("%0 ").arg(i);
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			mWaitingThumbnails.append(i);
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		}
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	}
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	TX_LOG_ARGS(items);
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    getNextThumbnail();
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    TX_EXIT
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}
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void MyDataProvider::getNextThumbnail()
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{
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//    TX_ENTRY
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    if ( !mThumbnailRequestPending && mWaitingThumbnails.count()){
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            int i = mWaitingThumbnails.takeFirst();
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            if (i >=0 && i < count() && containsRole(i, KItemIdRole)) {
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                int id = (data(i, KItemIdRole)).toInt();
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                unsigned long int uId = (unsigned long int)id;
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                TX_LOG_ARGS(QString("getThumbnail for index:%0 uID:%1").arg(i).arg(uId));
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                void *clientData = reinterpret_cast<void *>(i);
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                mThumbnailRequestID = mWrapper->getThumbnail(uId, clientData, KThumbnailsPriority);
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                mThumbnailRequestIndex = i;
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                mThumbnailRequestPending = true;            
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        }
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    }
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//    TX_EXIT    
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}
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void MyDataProvider::readMDSData()
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{
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    mMDSLoadInProgress = true;
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}
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void MyDataProvider::thumbnailReady( QPixmap pixmap, void* data, int id, int error )
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{
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//    TX_ENTRY    
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    Q_UNUSED(id);
2
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    if (!error && pixmap.rect().height()>0  && pixmap.rect().width()>0 ) {
1
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        int idx = reinterpret_cast<int>(data);
2
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        TX_LOG_ARGS(QString("thumbnailReady idx = %0").arg(idx));
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   119
//        updateIcon(idx, HbIcon( QIcon( pixmap ) ) );
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//        update(idx, HbIcon( QIcon( pixmap ) ), Qt::DecorationRole, false);
1
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        updateIcon(idx, createIcon(idx, pixmap));
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	} else {
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        TX_LOG_ARGS(QString("error:%0 id:%0").arg(error).arg(id));
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	}
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   125
    mThumbnailRequestIndex = -1;
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    mThumbnailRequestID = -1;
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    mThumbnailRequestPending = false;            
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    getNextThumbnail();
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   129
//    TX_EXIT
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   130
}
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   131
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   132
void MyDataProvider::doReleaseData(QList<int> list, bool silent)
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{
2
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   134
    TX_ENTRY    
1
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   135
    Q_UNUSED(silent);
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   136
    int i = 0;
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   137
    QString items = "Released items:";
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   138
    for (int idx=0;idx<list.count(); idx++){
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   139
        i = list[idx];
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   140
        if (mThumbnailRequestPending && mThumbnailRequestIndex==i ){
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   141
            TX_LOG_ARGS( QString("Cancel also thumbnail request for item %0").arg(i));
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   142
            mWrapper->cancelRequest(mThumbnailRequestID);
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   143
            mThumbnailRequestIndex = -1;
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   144
            mThumbnailRequestID = -1;
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   145
            mThumbnailRequestPending = false;
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   146
        }
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   147
        items += QString("%0 ").arg(i);
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   148
        mWaitingThumbnails.removeAll(i);
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   149
        releasePixmap(i);
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   150
    }
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   151
    TX_LOG_ARGS(items);
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   152
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   153
    getNextThumbnail();
2
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   154
    TX_EXIT        
1
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   155
}
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   156
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   157
QVariant MyDataProvider::defaultIcon() const
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   158
{
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   159
    return *mDefaultIcon;
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   160
}
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   161
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   162
void MyDataProvider::HandleSessionOpened(CMdESession& aSession, TInt aError)
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   163
{
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   164
    Q_UNUSED(aSession);
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   165
    Q_UNUSED(aError);	
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   166
    mScheduler->AsyncStop();
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   167
}
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   168
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   169
// ----------------------------------------------------------------------------
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   170
// HandleQueryCompleted
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   171
// ----------------------------------------------------------------------------
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   172
//
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   173
void MyDataProvider::HandleQueryCompleted(CMdEQuery& aQuery, TInt aError)
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   174
{
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   175
    Q_UNUSED(aError);	
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   176
    clearCache();
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   177
    mMDSLoadInProgress = false;
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   178
    int size = aQuery.ResultIds().Count();
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   179
    
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   180
    for(int i = 0; i < size ; i++){
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   181
        QList< QPair< QVariant, int > > list;
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   182
        unsigned long int id = aQuery.ResultId(i);
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   183
        QVariant v;
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   184
        v.setValue(id);
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   185
        list.append( QPair< QVariant, int >(v, KItemIdRole) );
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   186
        int a = count();
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   187
        int b = -count();
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   188
		int c = a/4 + b/10 + i%30 + i/2;
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   189
		QString s = QString("ITEM%1 %2 %3").arg(c).arg(a).arg(b);
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   190
		if (i%2){
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   191
            s = s.toLower();
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   192
		}
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parents:
diff changeset
   193
        list.append( QPair< QVariant, int >(s, Qt::DisplayRole) );
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parents:
diff changeset
   194
        list.append( QPair< QVariant, int >(QVariant(a), Qt::UserRole+2) );
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parents:
diff changeset
   195
        list.append( QPair< QVariant, int >(QVariant(b), Qt::UserRole+3) );
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parents:
diff changeset
   196
        list.append( QPair< QVariant, int >(QVariant(c), Qt::UserRole+4) );
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parents:
diff changeset
   197
        
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diff changeset
   198
        newItem(&list);
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parents:
diff changeset
   199
    }
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parents:
diff changeset
   200
    
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parents:
diff changeset
   201
    TX_LOG_ARGS( QString("size=%1").arg(count()) );
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   202
    
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   203
    mScheduler->AsyncStop();
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diff changeset
   204
}
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diff changeset
   205
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   206
void MyDataProvider::doResetModel()
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   207
{
2
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diff changeset
   208
    TX_ENTRY
1
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   209
    if (mThumbnailRequestPending && mThumbnailRequestID!=-1){
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   210
        mWrapper->cancelRequest(mThumbnailRequestID);
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parents:
diff changeset
   211
    }
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   212
    mThumbnailRequestIndex = -1;
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parents:
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   213
    mThumbnailRequestID = -1;
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parents:
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   214
    mThumbnailRequestPending = false;
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parents:
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   215
    mWaitingThumbnails.clear();
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parents:
diff changeset
   216
    
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parents:
diff changeset
   217
    //read MDS data once again
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parents:
diff changeset
   218
    TRAP_IGNORE(
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parents:
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   219
        CMdESession* session = CMdESession::NewL( *this ); 
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parents:
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   220
        mScheduler->Start();
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parents:
diff changeset
   221
        
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parents:
diff changeset
   222
        CMdENamespaceDef& namespaceDef = session->GetDefaultNamespaceDefL();
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parents:
diff changeset
   223
                
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parents:
diff changeset
   224
        CMdEObjectDef& objectDef = namespaceDef.GetObjectDefL(_L("Image"));
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parents:
diff changeset
   225
    
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parents:
diff changeset
   226
        CMdEObjectQuery* imageQuery = session->NewObjectQueryL( namespaceDef, objectDef, this );
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parents:
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   227
        CleanupStack::PushL( imageQuery );
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        imageQuery->SetResultMode( EQueryResultModeId );
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        imageQuery->FindL( );
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        mScheduler->Start();
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        CleanupStack::PopAndDestroy( 1 );
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        delete session;        
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    );    
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2
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    TX_EXIT    
1
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}
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