C++ List::first方法代码示例

int K3bDataUrlAddingDialog::addUrls( const KURL::List& urls,
				     K3bDirItem* dir,
				     QWidget* parent )
{
  if( urls.isEmpty() )
    return 0;

  //
  // A common mistake by beginners is to try to burn an iso image
  // with a data project. Let's warn them
  //
  if( urls.count() == 1 ) {
    K3bIso9660 isoF( urls.first().path() );
    if( isoF.open() ) {
     if( KMessageBox::warningYesNo( parent,
				    i18n("<p>The file you are about to add to the project is an ISO9660 image. As such "
					 "it can be burned to a medium directly since it already contains a file "
					 "system.<br>"
					 "Are you sure you want to add this file to the project?"),
				    i18n("Adding image file to project"),
				    i18n("Add the file to the project"),
				    i18n("Burn the image directly") ) == KMessageBox::No ) {
       // very rough dvd image size test
       if( K3b::filesize( urls.first() ) > 1000*1024*1024 )
	 k3bappcore->k3bMainWindow()->slotWriteDvdIsoImage( urls.first() );
       else
	 k3bappcore->k3bMainWindow()->slotWriteCdImage( urls.first() );
       return 0;
     }
    }
  }

  K3bDataUrlAddingDialog dlg( dir->doc(), parent );
  dlg.m_urls = urls;
  for( KURL::List::ConstIterator it = urls.begin(); it != urls.end(); ++it )
    dlg.m_urlQueue.append( qMakePair( K3b::convertToLocalUrl(*it), dir ) );

  dlg.slotAddUrls();
  int ret = QDialog::Accepted;
  if( !dlg.m_urlQueue.isEmpty() ) {
    dlg.m_dirSizeJob->setUrls( urls );
    dlg.m_dirSizeJob->setFollowSymlinks( dir->doc()->isoOptions().followSymbolicLinks() );
    dlg.m_dirSizeJob->start();
    ret = dlg.exec();
  }

  // make sure the dir size job is finished
  dlg.m_dirSizeJob->cancel();
  K3bSignalWaiter::waitForJob( dlg.m_dirSizeJob );

  QString message = dlg.resultMessage();
  if( !message.isEmpty() )
    KMessageBox::detailedSorry( parent, i18n("Problems while adding files to the project."), message );

  return ret;
}

void K3bIsoImageWritingDialog::dropEvent( QDropEvent* e )
{
  KURL::List urls;
  KURLDrag::decode( e, urls );
#if KDE_IS_VERSION(3,4,0)
  m_editImagePath->setKURL( urls.first() );
#else
  m_editImagePath->setURL( urls.first().path() );
#endif
}

void BGMonitor::dropEvent(QDropEvent *e)
{
    if (!KURLDrag::canDecode(e))
        return;

    KURL::List uris;
    if (KURLDrag::decode(e, uris) && (uris.count() > 0)) {
        // TODO: Download remote file
        if (uris.first().isLocalFile())
           emit imageDropped(uris.first().path());
    }
}

void FSBrowser::playlistFromURLs( const KURL::List &urls )
{
    QString suggestion;
    if( urls.count() == 1 && QFileInfo( urls.first().path() ).isDir() )
        suggestion = urls.first().fileName();
    else
        suggestion = i18n( "Untitled" );
    const QString path = PlaylistDialog::getSaveFileName( suggestion );
    if( path.isEmpty() )
        return;

    if( PlaylistBrowser::savePlaylist( path, urls ) )
        PlaylistWindow::self()->showBrowser( "PlaylistBrowser" );
}

void ScanGallery::slotUrlsDropped(QDropEvent *ev, FileTreeViewItem *item)
{
    KUrl::List urls = ev->mimeData()->urls();
    if (urls.isEmpty()) return;

    kDebug() << "onto" << (item==NULL ? "NULL" : item->url().prettyUrl())
             << "srcs" << urls.count() << "first" << urls.first();
    
    if (item==NULL) return;
    KUrl dest = item->url();

    // Check whether the drop is on top of a directory (in which case we
    // want to move/copy into it) or a file (move/copy into its containing
    // directory).
    if (!item->isDir()) dest.setFileName(QString::null);
    dest.adjustPath(KUrl::AddTrailingSlash);
    kDebug() << "resolved destination" << dest;

    // Make the last URL to copy the one to select next
    KUrl nextSel = dest;
    nextSel.addPath(urls.back().fileName(KUrl::ObeyTrailingSlash));
    m_nextUrlToShow = nextSel;

    KIO::Job *job;
    // TODO: top level window as 3rd parameter?
    if (ev->dropAction()==Qt::MoveAction) job = KIO::move(urls, dest);
    else job = KIO::copy(urls, dest);
    connect(job, SIGNAL(result(KJob *)), SLOT(slotJobResult(KJob *)));
}

void ImageButton::dropEvent( QDropEvent *event )
{
    if ( mReadOnly )
        return;

    const QMimeData *md = event->mimeData();
    if ( md->hasImage() ) {
        QImage image = qvariant_cast<QImage>(md->imageData());
        mPicture.setData( image );
        updateGui();
        emit changed();
    }

    KUrl::List urls = KUrl::List::fromMimeData( md );
    if ( urls.isEmpty() ) { // oops, no data
        event->setAccepted( false );
    } else {
        if ( mImageLoader ) {
            bool ok = false;
            KABC::Picture pic = mImageLoader->loadPicture( urls.first(), &ok );
            if ( ok ) {
                mPicture = pic;
                updateGui();
                emit changed();
            }
        }
    }
}

void DrawZone::viewportDropEvent( QDropEvent* e) {
	KURL::List urlList;
	// A file from konqueror was dropped
	if (KURLDrag::decode(e,urlList)) {
		imageMapEditor->openFile(urlList.first());
	}
}

KURL *decodeImgDrop(QDropEvent *e, QWidget *wdg)
{
    KURL::List uris;

    if (KURLDrag::decode(e, uris) && (uris.count() > 0)) {
	KURL *url = new KURL(uris.first());

	KImageIO::registerFormats();
	if( KImageIO::canRead(KImageIO::type(url->fileName())) )
	    return url;

	QStringList qs = QStringList::split('\n', KImageIO::pattern());
	qs.remove(qs.begin());

	QString msg = i18n( "%1 "
			    "does not appear to be an image file.\n"
			    "Please use files with these extensions:\n"
			    "%2")
			    .arg(url->fileName())
			    .arg(qs.join("\n"));
	KMessageBox::sorry( wdg, msg);
	delete url;
    }
    return 0;
}

void FileBrowser::playlistFromURLs( const KURL::List &urls )
{
    QString suggestion;
    if( urls.count() == 1 && QFileInfo( urls.first().path() ).isDir() )
        suggestion = urls.first().fileName();
    else
        suggestion = i18n( "Untitled" );
    const QString path = PlaylistDialog::getSaveFileName( suggestion );
    if( path.isEmpty() )
        return;

    if( PlaylistBrowser::savePlaylist( path, urls ) )
    {
        //FIXME: uncomment after string freeze
        //Pana::StatusBar::instance()->shortMessage( "Playlist saved to playlist browser" );
    }
}

void k2send::dropEvent(QDropEvent *event)
{
    KURL::List urls;
    if (KURLDrag::decode(event, urls) && !urls.isEmpty())
    {
        const KURL &url = urls.first();
        load(url);
    }
}

void
RadialMap::Widget::dropEvent( QDropEvent *e )
{
    DEBUG_ANNOUNCE

    KURL::List urls;
    if (KURLDrag::decode( e, urls ) && urls.count())
        emit giveMeTreeFor( urls.first() );
}

void KNewFileMenuPrivate::executeRealFileOrDir(const KNewFileMenuSingleton::Entry& entry)
{
    // The template is not a desktop file
    // Show the small dialog for getting the destination filename
    QString text = entry.text;
    text.remove("..."); // the ... is fine for the menu item but not for the default filename
    text = text.trimmed(); // In some languages, there is a space in front of "...", see bug 268895
    m_strategy.m_src = entry.templatePath;

    KUrl defaultFile(m_popupFiles.first());
    defaultFile.addPath(KIO::encodeFileName(text));
    if (defaultFile.isLocalFile() && QFile::exists(defaultFile.toLocalFile()))
        text = KIO::RenameDialog::suggestName(m_popupFiles.first(), text);
    
    KDialog* fileDialog = new KDialog(m_parentWidget);
    fileDialog->setAttribute(Qt::WA_DeleteOnClose);
    fileDialog->setModal(q->isModal());
    fileDialog->setButtons(KDialog::Ok | KDialog::Cancel);
    
    QWidget* mainWidget = new QWidget(fileDialog);
    QVBoxLayout *layout = new QVBoxLayout(mainWidget);
    QLabel *label = new QLabel(entry.comment);

    // We don't set the text of lineEdit in its constructor because the clear button would not be shown then.
    // It seems that setClearButtonShown(true) must be called *before* the text is set to make it work.
    // TODO: should probably be investigated and fixed in KLineEdit.
    KLineEdit *lineEdit = new KLineEdit;
    lineEdit->setClearButtonShown(true);
    lineEdit->setText(text);

    _k_slotTextChanged(text);
    QObject::connect(lineEdit, SIGNAL(textChanged(const QString &)), q, SLOT(_k_slotTextChanged(const QString &)));
    
    layout->addWidget(label);
    layout->addWidget(lineEdit);
    
    fileDialog->setMainWidget(mainWidget);
    QObject::connect(fileDialog, SIGNAL(accepted()), q, SLOT(_k_slotRealFileOrDir()));
    QObject::connect(fileDialog, SIGNAL(rejected()), q, SLOT(_k_slotAbortDialog()));
 
    fileDialog->show();
    lineEdit->selectAll();
    lineEdit->setFocus();
}

void MonthWidget::dropEvent(QDropEvent* event)
{
    KUrl::List srcURLs = KUrl::List::fromMimeData( event->mimeData() );

    if ( srcURLs.isEmpty() )
        return;

    KUrl url = srcURLs.first();
    setImage( url );
}

void MyEditor::contentsDropEvent( TQDropEvent *e )
{
        /////////////////    decode dropped file
        KURL::List list;
        TQString text;
        if ( KURLDrag::decode( e, list ) )
                slotDroppedFile(list.first());
        else if ( TQTextDrag::decode(e, text) )
                insert(text);
}

inline void
FSBrowser::contextMenuActivated( int id )
{
    switch( id )
    {
    case MakePlaylist:
        Playlist::instance()->insertMedia( selectedItems(), Playlist::Replace );
        break;

    case SavePlaylist:
        playlistFromURLs( selectedItems() );
        break;

    case AppendToPlaylist:
        Playlist::instance()->insertMedia( selectedItems() );
        break;

    case EditTags:
        {
            KURL::List list = selectedItems();
            TagDialog *dialog = NULL;
            if( list.count() == 1 )
            {
                dialog = new TagDialog( list.first(), this );
            }
            else
            {
                dialog = new TagDialog( list, this );
            }
            dialog->show();
        }
        break;

    case CopyToCollection:
        CollectionView::instance()->organizeFiles( selectedItems(), i18n( "Copy Files To Collection" ), true );
        break;

    case MoveToCollection:
        CollectionView::instance()->organizeFiles( selectedItems(), i18n( "Move Files To Collection" ), false );
        break;


    case CopyMediaDevice:
        MediaBrowser::queue()->addURLs( selectedItems() );
        break;

    case SelectAllFiles:
        selectAll();
        break;

    case BurnCd:
        K3bExporter::instance()->exportTracks( selectedItems() );
        break;
    }
}