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  1. 10th April 2008, 17:24 #7
    baray98
    baray98 is offline Advanced user
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    Default Re: QFtp in a separate instances

    my signal and slots connection
    Qt Code: 
    1. ftp = new QFtp(this);
    2.         connect(ftp, SIGNAL(commandFinished(int, bool)),
    3.                 this, SLOT(ftpCommandFinished(int, bool)));
    4.         connect(ftp, SIGNAL(listInfo(const QUrlInfo &)),
    5.                 this, SLOT(addToList(const QUrlInfo &)));
    6.         connect(ftp, SIGNAL(dataTransferProgress(qint64, qint64)),
    7.                 this, SLOT(updateDataTransferProgress(qint64, qint64)));
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    Qt Code: 
    1. void FtpDialog::downloadFile()
    2. {
    3.     m_dir = QFileDialog::getExistingDirectory(this, tr("Save To Directory"),
    4.             m_dir,
    5.             QFileDialog::ShowDirsOnly
    6.             | QFileDialog::DontResolveSymlinks);
    7.     if (m_dir.isEmpty())
    8.     {
    9.         return;
    10.     }
    11.     selectedFiles = fileList->selectedItems(); // fileList is a QTreeWidget
    12.     disconnect(downloadButton, SIGNAL(clicked()), this, SLOT(downloadFile()));
    13.     connect(downloadButton, SIGNAL(canceled()), this, SLOT(cancelDownload()));
    14.     for (int i = 0; i < selectedFiles.count(); i++)
    15.     {
    16.         QTreeWidgetItem* item = selectedFiles.at(i);
    17.         QIcon icon = item->icon(NameColumn);
    18.         icon.addFile(":/ftpSelected.png");
    19.         item->setIcon(NameColumn,icon);
    20.     }
    21.  
    22.     for (int i = 0 ; i < selectedFiles.count(); i++)
    23.     {
    24.         currentFileItem = selectedFiles.at(i);
    25.         fileList->setCurrentItem(currentFileItem);
    26.         QString fileName = currentFileItem->text(NameColumn);
    27.         done = false;
    28.         if (QFile::exists(m_dir+"/"+fileName))
    29.         {
    30.             QMessageBox::critical(this, tr("FTP"),
    31.                                   tr("There already exists a file called \"%1\" in "
    32.                                      "the target directory. For safety reason,"
    33.                                      "Delete the existing file manually in \"%2\" !")
    34.                                   .arg(fileName)
    35.                                   .arg(m_dir));
    36.             continue;
    37.         }
    38.  
    39.         file = new QFile(m_dir+"/"+fileName);
    40.         if (!file->open(QIODevice::WriteOnly))
    41.         {
    42.             QMessageBox::information(this, tr("FTP"),
    43.                                      tr("Unable to save the file %1: %2.")
    44.                                      .arg(fileName).arg(file->errorString()));
    45.             delete file;
    46.             continue;
    47.         }
    48.         startTime = QTime::currentTime();
    49.         ftp->get(currentFileItem->text(NameColumn), file); // getting file starts here 
    50.         statusLabel->setText(tr("Downloading %1...to Directory %2").arg(fileName)
    51.                              .arg(m_dir));
    52.         downloadButton->setText("Cancel Download");
    53.         while(ftp->hasPendingCommands() || ftp->currentCommand()!=QFtp::None)
    54.         {
    55.          qApp->processEvents();
    56.         }
    57.     }
    58.     selectedFiles.clear();
    59.     downloadButton->setText("Download");
    60.     disconnect(downloadButton, SIGNAL(canceled()), this, SLOT(cancelDownload()));
    61.     connect(downloadButton, SIGNAL(clicked()), this, SLOT(downloadFile()));
    62. }
    63.  
    64. void FtpDialog::ftpCommandFinished(int, bool error)
    65. {
    66.     setCursor(Qt::ArrowCursor);
    67.  
    68.     if (ftp->currentCommand() == QFtp::ConnectToHost)
    69.     {
    70.         if (error)
    71.         {
    72.             QMessageBox::information(this, tr("FTP"),
    73.                                      tr("Unable to connect to the FTP server "
    74.                                         "at %1. Please check that the host "
    75.                                         "name is correct.")
    76.                                      .arg(ftpServerLineEdit->text()));
    77.             connectOrDisconnect();
    78.             return;
    79.         }
    80.  
    81.         statusLabel->setText(tr("Logged onto %1.")
    82.                              .arg(ftpServerLineEdit->text()));
    83.         fileList->setFocus();
    84.         downloadButton->setDefault(true);
    85.         connectButton->setEnabled(true);
    86.         return;
    87.     }
    88.     if (ftp->currentCommand() ==  QFtp::Close)
    89.     {
    90.         statusLabel->setText(tr("Disconnected from %1.")
    91.                              .arg(ftpServerLineEdit->text()));
    92.         return;
    93.     }
    94.  
    95.  
    96.     if (ftp->currentCommand() == QFtp::Login)
    97.         ftp->list();
    98.  
    99.     if (ftp->currentCommand() == QFtp::Get)
    100.     {
    101.         if (error)
    102.         {
    103.             statusLabel->setText(tr("Canceled download of %1.")
    104.                                  .arg(file->fileName()));
    105.             file->close();
    106.             file->remove();
    107.  
    108.             selectedFiles.clear();
    109.             done = true;
    110.         }
    111.         else
    112.         {
    113.             statusLabel->setText(tr("Downloaded %1 ")
    114.                                  .arg(file->fileName()));
    115.             file->close();
    116.             done = true;
    117.             previousTime = QTime(0,0,0,0);
    118.             previousReadBytes = 0;
    119.             currentFileItem->setText(DownloadStatusColumn,QString("%1")
    120.                                      .arg(100));
    121.             currentFileItem->setIcon(NameColumn,QPixmap(":/ftpDownloaded.png"));
    122.         }
    123.         delete file;
    124.         enableDownloadButton();
    125.     }
    126.     else if (ftp->currentCommand() == QFtp::List)
    127.     {
    128.         if (isDirectory.isEmpty())
    129.         {
    130.             fileList->addTopLevelItem(new QTreeWidgetItem(QStringList() << tr("<empty>")));
    131.             fileList->setEnabled(false);
    132.         }
    133.     }
    134. }
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    Last edited by baray98; 10th April 2008 at 17:53.
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