ftpmainwindow.cpp.bak

qt代码的网络编程

    // finally read the directory on the ftp server
    remoteOperator.listChildren();
}

void FtpMainWindow::slotUpload()
{
    // the user pressed the upload button

    // if files have been selected on the left side (local filesystem)
    QValueList<QUrlInfo> files = leftView->selectedItems();
    if ( files.isEmpty() )
	return;

    // create a list of the URLs which should be copied
    QStringList lst;
    QValueList<QUrlInfo>::Iterator it = files.begin();
    for ( ; it != files.end(); ++it )
	lst << QUrl( localOperator, ( *it ).name() );

    // copy the list of selected files to the directory in which the
    // remoteOperator currently is (upload)
    remoteOperator.copy( lst, remoteOperator, FALSE );
}

void FtpMainWindow::slotDownload()
{
    // if the user pressed the download button

    // if files have been selected on the right side (remote filesystem)
    QValueList<QUrlInfo> files = rightView->selectedItems();
    if ( files.isEmpty() )
	return;

    // create a list of the URLs which should be downloaded
    QStringList lst;
    QValueList<QUrlInfo>::Iterator it = files.begin();
    for ( ; it != files.end(); ++it )
	lst << QUrl( remoteOperator, ( *it ).name() );

    // copy the list of selected files to the directory in which the
    // localOperator currently is (download)
    localOperator.copy( lst, localOperator, FALSE );
}

void FtpMainWindow::slotLocalStart( QNetworkOperation *op )
{
    // this slot is always called if the local QUrlOperator starts
    // listing a directory or dowloading a file

    if ( !op )
	return;

    if ( op->operation() == QNetworkProtocol::OpListChildren ) {
	// start listing a dir? clear the left view!
	leftView->clear();
    } else if ( op->operation() == QNetworkProtocol::OpGet ) {
	// start downloading a file? reset the progress bar!
	progressBar1->setTotalSteps( 0 );
	progressBar1->reset();
    }
}

void FtpMainWindow::slotLocalFinished( QNetworkOperation *op )
{
    // this slot is always called if the local QUrlOperator finished
    // an operation

    if ( !op )
	return;

    if ( op && op->state() == QNetworkProtocol::StFailed ) {
	// an error happend, let the user know that
	QMessageBox::critical( this, tr( "ERROR" ), op->protocolDetail() );

	// do something depending in the error code
	int ecode = op->errorCode();
	if ( ecode == QNetworkProtocol::ErrListChlidren || ecode == QNetworkProtocol::ErrParse ||
	     ecode == QNetworkProtocol::ErrUnknownProtocol || ecode == QNetworkProtocol::ErrLoginIncorrect ||
	     ecode == QNetworkProtocol::ErrValid || ecode == QNetworkProtocol::ErrHostNotFound ||
	     ecode == QNetworkProtocol::ErrFileNotExisting ) {
	    localOperator = oldLocal;
	    localCombo->setEditText( localOperator.path() );
	    localOperator.listChildren();
	}
    } else if ( op->operation() == QNetworkProtocol::OpPut ) {
	// finished saving the downloaded file? reread the dir and hide the progress bar
	localOperator.listChildren();
	progressLabel1->hide();
	progressBar1->hide();
    } else if ( op->operation() == QNetworkProtocol::OpGet ) {
	// finished reading a file from the ftp server? reset the progress bar
	progressBar1->setTotalSteps( 0 );
	progressBar1->reset();
    }

}

void FtpMainWindow::slotRemoteStart( QNetworkOperation *op )
{
    // this slot is always called if the remote QUrlOperator starts
    // listing a directory or uploading a file

    if ( !op )
	return;

    if ( op->operation() == QNetworkProtocol::OpListChildren ) {
	// start listing a dir? clear the right view!
	rightView->clear();
    } else if ( op->operation() == QNetworkProtocol::OpGet ) {
	// start downloading a file? reset the progress bar!
	progressBar2->setTotalSteps( 0 );
	progressBar2->reset();
    }
}

void FtpMainWindow::slotRemoteFinished( QNetworkOperation *op )
{
    // this slot is always called if the remote QUrlOperator finished
    // an operation

    if ( !op )
	return;

    if ( op && op->state() == QNetworkProtocol::StFailed ) {
	// an error happend, let the user know that
	QMessageBox::critical( this, tr( "ERROR" ), op->protocolDetail() );

	// do something depending in the error code
	int ecode = op->errorCode();
	if ( ecode == QNetworkProtocol::ErrListChlidren || ecode == QNetworkProtocol::ErrParse ||
	     ecode == QNetworkProtocol::ErrUnknownProtocol || ecode == QNetworkProtocol::ErrLoginIncorrect ||
	     ecode == QNetworkProtocol::ErrValid || ecode == QNetworkProtocol::ErrHostNotFound ||
	     ecode == QNetworkProtocol::ErrFileNotExisting ) {
	    remoteOperator = oldRemote;
	    remoteHostCombo->setEditText( remoteOperator.host() );
	    remotePathCombo->setEditText( remoteOperator.path() );
	    passLined->setText( remoteOperator.password() );
	    userCombo->setEditText( remoteOperator.user() );
	    portSpin->setValue( remoteOperator.port() );
	    remoteOperator.listChildren();
	}
    } else if ( op->operation() == QNetworkProtocol::OpListChildren ) {
	// finished reading a dir? set the correct path to the pth combo of the right view
	remotePathCombo->setEditText( remoteOperator.path() );
    } else if ( op->operation() == QNetworkProtocol::OpPut ) {
	// finished saving the uploaded file? reread the dir and hide the progress bar
	remoteOperator.listChildren();
	progressLabel2->hide();
	progressBar2->hide();
    } else if ( op->operation() == QNetworkProtocol::OpGet ) {
	// finished reading a file from the local filesystem? reset the progress bar
	progressBar2->setTotalSteps( 0 );
	progressBar2->reset();
    }
}

void FtpMainWindow::slotLocalDataTransferProgress( int bytesDone, int bytesTotal,
						   QNetworkOperation *op )
{
    // Show the progress here of the local QUrlOperator reads or writes data

    if ( !op )
	return;

    if ( !progressBar1->isVisible() ) {
	if ( bytesDone < bytesTotal) {
	    progressLabel1->show();
	    progressBar1->show();
	    progressBar1->setTotalSteps( bytesTotal );
	    progressBar1->setProgress( 0 );
	    progressBar1->reset();
	} else
	    return;
    }

    if ( progressBar1->totalSteps() == bytesTotal )
	progressBar1->setTotalSteps( bytesTotal );

    if ( op->operation() == QNetworkProtocol::OpGet )
	progressLabel1->setText( tr( "Read: %1" ).arg( op->arg( 0 ) ) );
    else if ( op->operation() == QNetworkProtocol::OpPut )
	progressLabel1->setText( tr( "Write: %1" ).arg( op->arg( 0 ) ) );
    else
	return;

    progressBar1->setProgress( bytesDone );
}

void FtpMainWindow::slotRemoteDataTransferProgress( int bytesDone, int bytesTotal,
						    QNetworkOperation *op )
{
    // Show the progress here of the remote QUrlOperator reads or writes data

    if ( !op )
	return;

    if ( !progressBar2->isVisible() ) {
	if ( bytesDone < bytesTotal) {
	    progressLabel2->show();
	    progressBar2->show();
	    progressBar2->setTotalSteps( bytesTotal );
	    progressBar2->setProgress( 0 );
	    progressBar2->reset();
	} else
	    return;
    }

    if ( progressBar2->totalSteps() != bytesTotal )
	progressBar2->setTotalSteps( bytesTotal );

    if ( op->operation() == QNetworkProtocol::OpGet )
	progressLabel2->setText( tr( "Read: %1" ).arg( op->arg( 0 ) ) );
    else if ( op->operation() == QNetworkProtocol::OpPut )
	progressLabel2->setText( tr( "Write: %1" ).arg( op->arg( 0 ) ) );
    else
	return;

    progressBar2->setProgress( bytesDone );
}

void FtpMainWindow::slotLocalMkdir()
{
    // create a dir on the local filesystem

    bool ok = FALSE;
    QString name = QInputDialog::getText( tr( "Directory Name:" ),
    	                                    tr( "OKOK" ),QLineEdit::Normal, QString::null, 0, this ,0);
 

    if ( !name.isEmpty() && ok )
	localOperator.mkdir( name );
}

void FtpMainWindow::slotLocalRemove()
{
    bool removeRequested = FALSE;
    QValueList<QUrlInfo> selected = leftView->selectedItems();
    for ( QValueList<QUrlInfo>::Iterator it = selected.begin();
	  it != selected.end(); ++it )
	if ( (*it).isFile() ) {
	    localOperator.remove( (*it).name() );
	    removeRequested = TRUE;
	}

    if ( removeRequested )
	localOperator.listChildren();
}

void FtpMainWindow::slotRemoteMkdir()
{
    // create a dir on the remote filesystem (FTP server)

    bool ok = FALSE;
    QString name = QInputDialog::getText( tr( "Directory Name:" ), QString::null, QString::null, &ok, this );

    if ( !name.isEmpty() && ok )
	remoteOperator.mkdir( name );
}

void FtpMainWindow::slotRemoteRemove()
{
    bool removeRequested = FALSE;
    QValueList<QUrlInfo> remoteSelected = rightView->selectedItems();
    for ( QValueList<QUrlInfo>::Iterator it = remoteSelected.begin();
	  it != remoteSelected.end(); ++it )
	if ( (*it).isFile() ) {
	    remoteOperator.remove( (*it).name() );
	    removeRequested = TRUE;
	}
    if ( removeRequested )
	remoteOperator.listChildren();
}

void FtpMainWindow::slotConnectionStateChanged( int, const QString &msg )
{
    statusBar()->message( msg );
}