mpviewplugins/mpcollectionviewplugin/src/mpcollectioncontainerartists.cpp
author hgs
Fri, 11 Jun 2010 19:36:32 -0500
changeset 37 eb79a7c355bf
parent 36 a0afa279b8fe
child 43 0f32e550d9d8
permissions -rw-r--r--
201023
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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: Music Player collection container definition - Artists.
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*
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*/
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#include <QtCore>
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#include <hbdocumentloader.h>
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#include <hblistview.h>
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#include <hbgroupbox.h>
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#include <hbindexfeedback.h>
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#include <hgmediawall.h>
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#include "mpcollectioncontainerartists.h"
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#include "mpmpxcollectiondata.h"
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#include "mpcollectiondatamodel.h"
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#include "mpcollectiontbonelistdatamodel.h"
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#include "mptrace.h"
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/*!
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    \class MpCollectionContainerArtists
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    \brief Music Player collection container definition - Artists.
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    'Artists' collection container implements the interface specified
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    by MpCollectionContainer. It provides a layout and widgets for the
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    'Artists' view.
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    This container handles the following contexts:
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    \li ECollectionContextArtists
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    \li ECollectionContextArtistAlbums
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    \li ECollectionContextArtistAlbumsTBone
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    \li ECollectionContextArtistAllSongs
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    \sa MpCollectionContainer
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*/
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/*!
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 Constructs the collection container.
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 */
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MpCollectionContainerArtists::MpCollectionContainerArtists( HbDocumentLoader *loader, QGraphicsItem *parent )
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    : MpCollectionListContainer(loader, parent),
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      mInfoBar(0),
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      mTBone(0),
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      mTBoneListModel(0),
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      mCurrentArtistIndex(0),
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      mCurrentAlbumIndex(0)
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{
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    TX_LOG
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    mCollectionContext = ECollectionContextArtists;
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}
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/*!
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 Destructs the collection container.
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 */
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MpCollectionContainerArtists::~MpCollectionContainerArtists()
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{
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    TX_ENTRY
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    delete mInfoBar;
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    delete mTBone;
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    delete mList;
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    delete mTBoneListModel;
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    TX_EXIT
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}
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/*!
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 Sets the data model for the container.
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 */
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void MpCollectionContainerArtists::setDataModel( MpCollectionDataModel *dataModel )
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{
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    TX_ENTRY_ARGS("mCollectionContext=" << mCollectionContext);
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    MpCollectionContainer::setDataModel(dataModel);
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    int count = mCollectionData->count();
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    switch ( mCollectionContext ) {
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        case ECollectionContextArtists:
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            if ( mList ) {
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                mList->setModel(dataModel);
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                if ( count ) {
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                    if ( mCurrentArtistIndex >= count ) {
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						// This can happen if the last item is deleted
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                        mCurrentArtistIndex = count - 1;
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                    }
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                    mList->scrollTo( dataModel->index(mCurrentArtistIndex, 0) );
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                }
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                // Reset the current album index for navigation:
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                // ECollectionContextArtistAlbums -> ECollectionContextArtists
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                mCurrentAlbumIndex = 0;
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            }
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            break;
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        case ECollectionContextArtistAlbums:
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            if ( mList ) {
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                mList->setModel(dataModel);
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                if ( count ) {
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                    if ( mCurrentAlbumIndex >= count ) {
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                        // This can happen if the last item is deleted
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                        mCurrentAlbumIndex = count - 1;
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                    }
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                    mList->scrollTo( dataModel->index(mCurrentAlbumIndex, 0) );
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                }
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                // Reset the album index offset for navigation:
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                // ECollectionContextArtistAlbumsTBone -> ECollectionContextArtistAlbums
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                mAlbumIndexOffset = 0;
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            }
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            break;
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        case ECollectionContextArtistAlbumsTBone:
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            if ( mTBone ) {
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                if ( count > 1 ) {
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                    // Selected artist has more than 1 album and therefore the
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                    // artist's "All songs" exist. Since we don't show artist's
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                    // "All songs" in TBone, we need to set an offset.
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                    mAlbumIndexOffset = 1;
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                }
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                else {
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                    // Selected artist has exactly 1 album and therefore the
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                    // artist's "All songs" doesn't exist.
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                    mAlbumIndexOffset = 0;
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                }
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                if ( mCurrentAlbumIndex >= count ) {
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				    // This can happen if the last item is deleted
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                    mCurrentAlbumIndex = count - 1;
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                }
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                mTBone->setModel(dataModel);
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                mTBone->scrollTo( dataModel->index(mCurrentAlbumIndex - mAlbumIndexOffset, 0) );
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                if ( mTBoneListModel == 0 ) {
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                    mTBoneListModel = new MpCollectionTBoneListDataModel(mCollectionData);
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                    connect( mTBoneListModel, SIGNAL(albumDataChanged()), this, SLOT(albumDataChanged()) );
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                    connect( mTBoneListModel, SIGNAL(albumDataAvailable()), this, SLOT(albumDataAvailable()) );
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                }
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                mList->setModel(mTBoneListModel);
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                if ( mCollectionData->setCurrentAlbum(mCurrentAlbumIndex) ) {
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                    if ( mCollectionData->albumSongsCount() > 1 ) {
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                        emit shuffleEnabled(true);
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                    }
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                    else {
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                        emit shuffleEnabled(false);
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                    }
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                }
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                else {
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                    emit findAlbumSongs(mCurrentAlbumIndex);
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                    emit shuffleEnabled(false);
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                }
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            }
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            break;
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        case ECollectionContextArtistAllSongs:
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            if ( mList ) {
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                mList->setModel(dataModel);
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            }
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            break;
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        default:
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            break;
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    }
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    TX_EXIT
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}
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/*!
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 Slot to be called when an item is selected by the user.
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 */
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void MpCollectionContainerArtists::itemActivated( const QModelIndex &index )
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{
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    int row = index.row();
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    TX_ENTRY_ARGS("mCollectionContext=" << mCollectionContext << "index=" << row);
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    switch ( mCollectionContext ) {
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        case ECollectionContextArtists:
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            mCurrentArtistIndex = row;
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            TX_LOG_ARGS("mCurrentArtistIndex=" << mCurrentArtistIndex);
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            MpCollectionListContainer::itemActivated(index);
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            break;
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        case ECollectionContextArtistAlbums:
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            mCurrentAlbumIndex = row;
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            TX_LOG_ARGS("mCurrentAlbumIndex=" << mCurrentAlbumIndex);
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            MpCollectionListContainer::itemActivated(index);
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            break;
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        case ECollectionContextArtistAlbumsTBone:
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            TX_LOG_ARGS("mCurrentAlbumIndex=" << mCurrentAlbumIndex);
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            if ( mViewMode == MpCommon::FetchView ) {
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                MpCollectionListContainer::itemActivated(index);
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            }
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            else {
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                emit playAlbumSongs(mCurrentAlbumIndex, row);
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            }
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            break;
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        case ECollectionContextArtistAllSongs:
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            MpCollectionListContainer::itemActivated(index);
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            break;
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        default:
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            break;
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    }
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    TX_EXIT
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}
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/*!
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 Slot to be called when scrolling ends in media wall and an album is centered.
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 */
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void MpCollectionContainerArtists::albumCentered()
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{
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    TX_ENTRY
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    int index = mTBone->currentIndex().row();
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    TX_LOG_ARGS("index=" << index);
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    index += mAlbumIndexOffset;
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    if ( mCurrentAlbumIndex != index ) {
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        // Prevent reloading if user just moves the center album a little
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        // and the same album re-centers.
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        mCurrentAlbumIndex = index;
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        TX_LOG_ARGS("mCurrentAlbumIndex=" << mCurrentAlbumIndex);
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        if ( mCollectionData->setCurrentAlbum(mCurrentAlbumIndex) ) {
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            if ( mCollectionData->albumSongsCount() > 1 ) {
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                emit shuffleEnabled(true);
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            }
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            // Enable context menu
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            mLongPressEnabled = true;
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        }
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        else {
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            emit findAlbumSongs(mCurrentAlbumIndex);
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        }
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    }
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    else {
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        // Landed on the same album. Just update menu.
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        if ( mCollectionData->albumSongsCount() > 1 ) {
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            emit shuffleEnabled(true);
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        }
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        // Enable context menu
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        mLongPressEnabled = true;
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    }
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    TX_EXIT
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}
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/*!
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 Slot to be called when data model has new data. This occurs after a delete operation is complete.
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 Two cases:
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     1) User deleted an artist.
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	 2) User deleted last song in an album.
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 */
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void MpCollectionContainerArtists::dataReloaded()
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{
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    TX_ENTRY
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    if ( mCollectionContext == ECollectionContextArtistAlbumsTBone ) {
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        if ( mCurrentAlbumIndex > 0 ) {
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            --mCurrentAlbumIndex;
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        }
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        mTBone->scrollTo( mDataModel->index(mCurrentAlbumIndex - mAlbumIndexOffset, 0) );
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        if ( mCollectionData->setCurrentAlbum(mCurrentAlbumIndex) ) {
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            if ( mCollectionData->albumSongsCount() == 1 ) {
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                emit shuffleEnabled(false);
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            }
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        }
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        else {
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            emit findAlbumSongs(mCurrentAlbumIndex);
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        }
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    }
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    else {
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        MpCollectionListContainer::dataReloaded();
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    }
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    TX_EXIT
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}
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/*!
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 Slot to be called when data model has new data.
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 User has deleted one of the songs from TBone list.
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 */
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void MpCollectionContainerArtists::albumDataChanged()
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{
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    TX_ENTRY
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    emit findAlbumSongs(mCurrentAlbumIndex);
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    emit shuffleEnabled(false);
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    TX_EXIT
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}
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/*!
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 Slot to be called TBone starts scrolling.
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 */
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void MpCollectionContainerArtists::scrollingStarted()
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{
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    TX_ENTRY
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    // Disable shuffle action from the menu
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    emit shuffleEnabled(false);
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    // Disable context menu
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    mLongPressEnabled = false;
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    TX_EXIT
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}
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/*!
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 Slot to be called album data is available. This is a result of findAlbumSongs signal.
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 */
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void MpCollectionContainerArtists::albumDataAvailable()
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{
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    TX_ENTRY
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    int count = mCollectionData->albumSongsCount();
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    if ( count > 1 ) {
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        emit shuffleEnabled(true);
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    }
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    // Enable context menu
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    mLongPressEnabled = true;
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    TX_EXIT
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}
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/*!
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 Sets up the container by organizing widgets according to its layout.
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 \reimp
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 */
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void MpCollectionContainerArtists::setupContainer()
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{
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    TX_ENTRY_ARGS("mCollectionContext=" << mCollectionContext);
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   316
    if ( mCollectionData->count() ) {
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        bool ok = false;
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        QGraphicsWidget *widget;
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   319
        QString artist;
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        switch ( mCollectionContext ) {
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   321
            case ECollectionContextArtists:
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                mDocumentLoader->load(QString(":/docml/musiccollection.docml"), "artists", &ok);
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   323
                if ( !ok ) {
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   324
                    TX_LOG_ARGS("Error: invalid xml file.");
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                    Q_ASSERT_X(ok, "MpCollectionContainerArtists::setupContainer", "invalid xml file");
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   326
                }
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   327
                if ( !mList ) {
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   328
                    widget = mDocumentLoader->findWidget(QString("artistsList"));
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   329
                    mList = qobject_cast<HbListView*>(widget);
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   330
                    mIndexFeedback->setItemView(mList);
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   331
                    initializeList();
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   332
                }
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   333
                if ( mInfoBar ) {
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   334
                    delete mInfoBar;
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   335
                    mInfoBar = 0;
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   336
                }
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   337
                if ( mTBone ) {
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   338
                    delete mTBone;
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   339
                    mTBone = 0;
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   340
                }
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   341
                break;
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   342
            case ECollectionContextArtistAlbums:
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   343
                mDocumentLoader->load(QString(":/docml/musiccollection.docml"), "artistAlbums", &ok);
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   344
                if ( !ok ) {
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   345
                    TX_LOG_ARGS("Error: invalid xml file.");
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   346
                    Q_ASSERT_X(ok, "MpCollectionContainerArtists::setupContainer", "invalid xml file");
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   347
                }
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   348
                widget = mDocumentLoader->findWidget(QString("artistDetail"));
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   349
                mInfoBar = qobject_cast<HbGroupBox*>(widget);
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   350
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   351
                artist = mCollectionData->collectionTitle();
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   352
                if ( artist.isEmpty() ) {
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   353
                    artist = hbTrId("txt_mus_subtitle_unknown");
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   354
                }
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   355
                mInfoBar->setHeading(artist);
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   356
                if ( mTBone ) {
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   357
                    delete mTBone;
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   358
                    mTBone = 0;
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diff changeset
   359
                }
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   360
                break;
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   361
            case ECollectionContextArtistAlbumsTBone:
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   362
                {
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   363
                if ( mViewMode == MpCommon::FetchView ) {
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diff changeset
   364
                    mDocumentLoader->load(QString(":/docml/musiccollection.docml"), "artistAlbumTBoneFetcher", &ok);
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diff changeset
   365
                    if ( !ok ) {
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   366
                        TX_LOG_ARGS("Error: invalid xml file.");
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   367
                        Q_ASSERT_X(ok, "MpCollectionContainerAlbums::setupContainer", "invalid xml file");
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diff changeset
   368
                    }
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   369
                    widget = mDocumentLoader->findWidget(QString("artistDetail"));
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   370
                    mInfoBar = qobject_cast<HbGroupBox*>(widget);
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   371
                    mInfoBar->setHeading( hbTrId("txt_mus_subtitle_select_a_song") );
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diff changeset
   372
                }
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   373
                else {
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   374
                    mDocumentLoader->load(QString(":/docml/musiccollection.docml"), "artistAlbumTBone", &ok);
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   375
                    if ( !ok ) {
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   376
                        TX_LOG_ARGS("Error: invalid xml file.");
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   377
                        Q_ASSERT_X(ok, "MpCollectionContainerAlbums::setupContainer", "invalid xml file");
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diff changeset
   378
                    }
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   379
                    if ( mInfoBar ) {
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diff changeset
   380
                        delete mInfoBar;
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diff changeset
   381
                        mInfoBar = 0;
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diff changeset
   382
                    }
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diff changeset
   383
                }
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   384
                widget = mDocumentLoader->findWidget(QString("artistAlbumWall"));
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   385
                mTBone = qobject_cast<HgMediawall*>(widget);
37
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diff changeset
   386
                HbIcon defaultIcon( "qtg_large_album_art" );
35
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diff changeset
   387
                defaultIcon.setSize(mTBone->itemSize());
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diff changeset
   388
                mTBone->setDefaultImage( defaultIcon.pixmap().toImage() );
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diff changeset
   389
                mTBone->setTitleFontSpec( HbFontSpec(HbFontSpec::Primary) );
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diff changeset
   390
                mTBone->setDescriptionFontSpec( HbFontSpec(HbFontSpec::Secondary) );
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diff changeset
   391
                mTBone->setScrollBarPolicy( HgWidget::ScrollBarAlwaysOff );
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diff changeset
   392
                mTBone->enableReflections(true);
36
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diff changeset
   393
                connect( mTBone, SIGNAL(scrollingStarted()), this, SLOT(scrollingStarted()) );
35
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diff changeset
   394
                connect( mTBone, SIGNAL(scrollingEnded()), this, SLOT(albumCentered()) );
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diff changeset
   395
                }
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diff changeset
   396
                break;
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diff changeset
   397
            case ECollectionContextArtistAllSongs:
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diff changeset
   398
                // No need to load anything. Just reuse the section "artistAlbums" loaded
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diff changeset
   399
                // in ECollectionContextArtistAlbums context.
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diff changeset
   400
                if ( mViewMode == MpCommon::FetchView ) {
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diff changeset
   401
                    mInfoBar->setHeading( hbTrId("txt_mus_subtitle_select_a_song") );
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parents: 34
diff changeset
   402
                }
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parents: 34
diff changeset
   403
                else {
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diff changeset
   404
                    artist = mCollectionData->collectionTitle();
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parents: 34
diff changeset
   405
                    if ( artist.isEmpty() ) {
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diff changeset
   406
                        artist = hbTrId("txt_mus_subtitle_unknown_all");
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parents: 34
diff changeset
   407
                    }
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parents: 34
diff changeset
   408
                    else {
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parents: 34
diff changeset
   409
                        artist = hbTrId("txt_mus_subtitle_1_all").arg(artist);
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parents: 34
diff changeset
   410
                    }
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parents: 34
diff changeset
   411
                    mInfoBar->setHeading(artist);
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parents: 34
diff changeset
   412
                }
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parents: 34
diff changeset
   413
                break;
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parents: 34
diff changeset
   414
            default:
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parents: 34
diff changeset
   415
                break;
34
hgs
parents:
diff changeset
   416
        }
35
hgs
parents: 34
diff changeset
   417
    }
34
hgs
parents:
diff changeset
   418
    else {
35
hgs
parents: 34
diff changeset
   419
        // Must delete widgets when last song is deleted and view is reloaded.
34
hgs
parents:
diff changeset
   420
        if ( mInfoBar ) {
hgs
parents:
diff changeset
   421
            delete mInfoBar;
hgs
parents:
diff changeset
   422
            mInfoBar = 0;
hgs
parents:
diff changeset
   423
        }
35
hgs
parents: 34
diff changeset
   424
        if ( mTBone ) {
hgs
parents: 34
diff changeset
   425
            delete mTBone;
hgs
parents: 34
diff changeset
   426
            mTBone = 0;
hgs
parents: 34
diff changeset
   427
        }
34
hgs
parents:
diff changeset
   428
        // Call empty list from base class
hgs
parents:
diff changeset
   429
        setupEmptyListContainer();
hgs
parents:
diff changeset
   430
    }
hgs
parents:
diff changeset
   431
    TX_EXIT
hgs
parents:
diff changeset
   432
}
hgs
parents:
diff changeset
   433