magnatunebrowser.cpp

来自「Amarok是一款在LINUX或其他类UNIX操作系统中运行的音频播放器软件。 」· C++ 代码 · 共 521 行 · 第 1/2 页

    MagnatuneListViewAlbumItem *selectedAlbum = dynamic_cast<MagnatuneListViewAlbumItem *>( m_listView->selectedItem() );

    if (selectedAlbum)
        m_purchaseHandler->purchaseAlbum( *selectedAlbum );
}

void MagnatuneBrowser::purchaseAlbumContainingSelectedTrack( )
{
    if ( !m_purchaseHandler )
    {
        m_purchaseHandler = new MagnatunePurchaseHandler();
        m_purchaseHandler->setParent( this );
        connect( m_purchaseHandler, SIGNAL( purchaseCompleted( bool ) ), this, SLOT( purchaseCompleted( bool ) ) );
    }

    MagnatuneListViewTrackItem *selectedTrack = dynamic_cast<MagnatuneListViewTrackItem *>( m_listView->selectedItem() );
    if (!selectedTrack) {
	debug() << "dynamic_cast to selected track failed!" << endl;
	return;
    }

    MagnatuneAlbum album( MagnatuneDatabaseHandler::instance() ->getAlbumById( selectedTrack->getAlbumId() ) );
    m_purchaseHandler->purchaseAlbum( album );
}

void MagnatuneBrowser::initTopPanel( )
{
    m_topPanel = new QHBox( this, "topPanel", 0 );
    m_topPanel->setMaximumHeight( 24 );
    m_topPanel->setSpacing( 2 );
    m_topPanel->setMargin( 2 );

    new QLabel ( i18n( "Genre: " ), m_topPanel, "genreLabel", 0 );

    m_genreComboBox = new QComboBox( false, m_topPanel, "genreComboBox" );

    updateGenreBox();

    m_advancedFeaturesButton = new QPushButton( i18n( "Redownload" ), m_topPanel, "advancedButton" );
    connect( m_advancedFeaturesButton, SIGNAL( clicked() ), this, SLOT( processRedownload() ) );

    connect( m_genreComboBox, SIGNAL( activated ( int ) ), this, SLOT( genreChanged() ) );
}

void MagnatuneBrowser::initBottomPanel()
{
    m_bottomPanel = new QVBox( this, "bottomPanel", 0 );
    m_bottomPanel->setMaximumHeight( 54 );
    m_bottomPanel->setSpacing( 2 );
    m_bottomPanel->setMargin( 2 );

    QHBox *hBox = new QHBox( m_bottomPanel, "bottomHBox", 0 );
    hBox->setMaximumHeight( 24 );
    hBox->setSpacing( 2 );
    //hBox->setMargin( 2 );

    m_purchaseAlbumButton = new QPushButton( i18n( "Purchase Album" ), m_bottomPanel, "purchaseButton" );
    m_purchaseAlbumButton->setIconSet( SmallIconSet( Amarok::icon( "download" ) ) );
    m_purchaseAlbumButton->setEnabled( false );
    m_purchaseAlbumButton->setMaximumHeight( 24 );

    m_updateListButton = new QPushButton( i18n( "Update" ), hBox, "updateButton" );
    m_updateListButton->setIconSet( SmallIconSet( Amarok::icon( "rescan" ) ) );
    m_showInfoToggleButton = new QPushButton( i18n( "Show Info" ) , hBox, "showInfoCheckbox" );
    m_showInfoToggleButton->setToggleButton( true );
    m_showInfoToggleButton->setIconSet( SmallIconSet( Amarok::icon( "info" ) ) );
    m_showInfoToggleButton->setOn( true );

    m_isInfoShown = true;

    connect( m_showInfoToggleButton, SIGNAL( toggled( bool ) ), this, SLOT( showInfo( bool ) ) );
    connect( m_updateListButton, SIGNAL( clicked() ), this, SLOT( updateButtonClicked() ) );
    connect( m_purchaseAlbumButton, SIGNAL( clicked() ) , this, SLOT( purchaseButtonClicked() ) );
}

void MagnatuneBrowser::updateButtonClicked()
{
    m_updateListButton->setEnabled( false );
    updateMagnatuneList();
}

bool MagnatuneBrowser::updateMagnatuneList()
{
    //download new list from magnatune

    m_listDownloadJob = KIO::storedGet( KURL( "http://magnatune.com/info/album_info.xml" ), false, false );
    Amarok::StatusBar::instance() ->newProgressOperation( m_listDownloadJob )
    .setDescription( i18n( "Downloading Magnatune.com Database" ) )
    .setAbortSlot( this, SLOT( listDownloadCancelled() ) );

    connect( m_listDownloadJob, SIGNAL( result( KIO::Job* ) ), SLOT( listDownloadComplete( KIO::Job* ) ) );

    return true;
}


void MagnatuneBrowser::listDownloadComplete( KIO::Job * downLoadJob )
{

    if ( downLoadJob != m_listDownloadJob )
        return ; //not the right job, so let's ignore it

    m_updateListButton->setEnabled( true );
    if ( !downLoadJob->error() == 0 )
    {
        //TODO: error handling here
        return ;
    }


    KIO::StoredTransferJob* const storedJob = static_cast<KIO::StoredTransferJob*>( downLoadJob );
    QString list = QString( storedJob->data() );


    QFile file( "/tmp/album_info.xml" );

    if ( file.exists() )
        file.remove();

    if ( file.open( IO_WriteOnly ) )
    {
        QTextStream stream( &file );
        stream << list;
        file.close();
    }


    MagnatuneXmlParser * parser = new MagnatuneXmlParser( "/tmp/album_info.xml" );
    connect( parser, SIGNAL( doneParsing() ), SLOT( doneParsing() ) );

    ThreadManager::instance() ->queueJob( parser );
}

void MagnatuneBrowser::listDownloadCancelled( )
{


    Amarok::StatusBar::instance() ->endProgressOperation( m_listDownloadJob );
    m_listDownloadJob->kill( true );
    delete m_listDownloadJob;
    m_listDownloadJob = 0;
    debug() << "Aborted xml download" << endl;

    m_updateListButton->setEnabled( true );
}

void MagnatuneBrowser::showInfo( bool show )
{
    if ( show )
    {
        m_isInfoShown = true;
        m_artistInfobox->widget() ->setMaximumHeight( 2000 );
    }
    else
    {
        m_artistInfobox->widget() ->setMaximumHeight( 0 );
        m_isInfoShown = false;
    }
}

void MagnatuneBrowser::updateList()
{

    DEBUG_BLOCK
    const QString genre = m_genreComboBox->currentText();

    MagnatuneArtistList artists;
    artists = MagnatuneDatabaseHandler::instance() ->getArtistsByGenre( genre );

    m_listView->clear();
    MagnatuneArtistList::iterator it;
    for ( it = artists.begin(); it != artists.end(); ++it )
        new MagnatuneListViewArtistItem( ( *it ), m_listView );

    m_listView->repaintContents();
}

void MagnatuneBrowser::genreChanged()
{
    debug() << "Genre changed..." << endl;
    updateList( );
}


void MagnatuneBrowser::doneParsing()
{
    updateList();
    updateGenreBox( );
    updateList(); // stupid stupid hack....
}

void MagnatuneBrowser::updateGenreBox()
{
    const QStringList genres = MagnatuneDatabaseHandler::instance() ->getAlbumGenres();

    m_genreComboBox->clear();
    m_genreComboBox->insertItem ( "All" , 0 ); // should not be i18n'ed as it is
    //used as a trigger in the code in the database handler.

    foreach( genres )
    m_genreComboBox->insertItem( ( *it ), -1 );
}

void MagnatuneBrowser::processRedownload( )
{
    if ( m_redownloadHandler == 0 )
    {
        m_redownloadHandler = new MagnatuneRedownloadHandler( this );
    }
    m_redownloadHandler->showRedownloadDialog();
}

void MagnatuneBrowser::purchaseCompleted( bool /*success*/ )
{

    if ( m_purchaseHandler != 0 )
    {
        delete m_purchaseHandler;
        m_purchaseHandler = 0;
    }

    m_purchaseAlbumButton->setEnabled( true );
    m_purchaseInProgress = false;

    debug() << "Purchase operation complete" << endl;

    //TODO: display some kind of success dialog here?


}

void MagnatuneBrowser::polish( )
{

    DEBUG_BLOCK;


    if (!m_polished) {
        m_polished = true;
        updateList( );
        m_artistInfobox->begin( KURL( locate( "data", "amarok/data/" ) ) );
        m_artistInfobox->write( "<table align='center' border='0'><tbody align='center' valign='top'>"
          "<tr align='center'><td><div align='center'>"
          "<IMG src='magnatune_logo.png' width='200' height='36' align='center' border='0'>"
          "</div></td></tr><tr><td><BR>"
        + i18n( "Welcome to Amarok's integrated Magnatune.com store. If this is the "
                "first time you run it, you must update the database by pressing the "
                "'Update' button below." )
        + "</td></tr></tbody></table>" );
        m_artistInfobox->end();

    }

}



#include "magnatunebrowser.moc"