Qt based Ftp dialog
Foundations of Qt Development\Chapter14\ftp\ftpdialog.cpp
/*
* Copyright (c) 2006-2007, Johan Thelin
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* * Neither the name of APress nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#include <QFileDialog>
#include <QMessageBox>
#include "ftpdialog.h"
FtpDialog::FtpDialog() : QDialog()
{
file = 0;
ui.setupUi( this );
connect( ui.connectButton, SIGNAL(clicked()), this, SLOT(connectClicked()) );
connect( ui.disconnectButton, SIGNAL(clicked()), this, SLOT(disconnectClicked()) );
connect( ui.cdButton, SIGNAL(clicked()), this, SLOT(cdClicked()) );
connect( ui.upButton, SIGNAL(clicked()), this, SLOT(upClicked()) );
connect( ui.getButton, SIGNAL(clicked()), this, SLOT(getClicked()) );
connect( ui.dirList, SIGNAL(itemSelectionChanged()), this, SLOT(selectionChanged()) );
connect( &ftp, SIGNAL(commandFinished(int,bool)), this, SLOT(ftpFinished(int,bool)) );
connect( &ftp, SIGNAL(listInfo(QUrlInfo)), this, SLOT(ftpListInfo(QUrlInfo)) );
connect( &ftp, SIGNAL(dataTransferProgress(qint64,qint64)), this, SLOT(ftpProgress(qint64,qint64)) );
ui.disconnectButton->setEnabled( false );
ui.cdButton->setEnabled( false );
ui.upButton->setEnabled( false );
ui.getButton->setEnabled( false );
}
void FtpDialog::connectClicked()
{
ui.connectButton->setEnabled( false );
ftp.connectToHost( "ftp.trolltech.com" );
ui.statusLabel->setText( tr("Connecting to host...") );
}
void FtpDialog::disconnectClicked()
{
ui.disconnectButton->setEnabled( false );
ui.cdButton->setEnabled( false );
ui.upButton->setEnabled( false );
ui.getButton->setEnabled( false );
ftp.close();
}
void FtpDialog::cdClicked()
{
ui.disconnectButton->setEnabled( false );
ui.cdButton->setEnabled( false );
ui.upButton->setEnabled( false );
ui.getButton->setEnabled( false );
ftp.cd( ui.dirList->selectedItems()[0]->text() );
ui.statusLabel->setText( tr("Changing directory...") );
}
void FtpDialog::upClicked()
{
ui.disconnectButton->setEnabled( false );
ui.cdButton->setEnabled( false );
ui.upButton->setEnabled( false );
ui.getButton->setEnabled( false );
ftp.cd("..");
ui.statusLabel->setText( tr("Changing directory...") );
}
void FtpDialog::getClicked()
{
QString fileName = QFileDialog::getSaveFileName( this, tr("Get File"), ui.dirList->selectedItems()[0]->text() );
if( fileName.isEmpty() )
return;
file = new QFile( fileName, this );
if( !file->open( QIODevice::WriteOnly ) )
{
QMessageBox::warning( this, tr("Error"), tr("Failed to open file %1 for writing.").arg( fileName ) );
delete file;
file = 0;
return;
}
ui.disconnectButton->setEnabled( false );
ui.cdButton->setEnabled( false );
ui.upButton->setEnabled( false );
ui.getButton->setEnabled( false );
ftp.get( ui.dirList->selectedItems()[0]->text(), file );
ui.statusLabel->setText( tr("Downloading file...") );
}
void FtpDialog::ftpProgress( qint64 done, qint64 total )
{
if( total == 0 )
return;
ui.statusLabel->setText( tr("Downloading file... (%1%)").arg( QString::number( double(done)*100/double(total), 'f', 1 ) ) );
}
void FtpDialog::selectionChanged()
{
if( ui.dirList->selectedItems().count() == 1 )
{
if( files.indexOf( ui.dirList->selectedItems()[0]->text() ) == -1 )
{
ui.cdButton->setEnabled( ui.disconnectButton->isEnabled() );
ui.getButton->setEnabled( false );
}
else
{
ui.cdButton->setEnabled( false );
ui.getButton->setEnabled( ui.disconnectButton->isEnabled() );
}
}
else
{
ui.cdButton->setEnabled( false );
ui.getButton->setEnabled( false );
}
}
void FtpDialog::getFileList()
{
ui.disconnectButton->setEnabled( false );
ui.cdButton->setEnabled( false );
ui.upButton->setEnabled( false );
ui.getButton->setEnabled( false );
ui.dirList->clear();
files.clear();
if( ftp.state() == QFtp::LoggedIn )
ftp.list();
}
void FtpDialog::ftpListInfo( QUrlInfo info )
{
ui.dirList->addItem( info.name() );
if( info.isFile() )
files << info.name();
}
void FtpDialog::ftpFinished( int request, bool error )
{
if( error )
{
switch( ftp.currentCommand() )
{
case QFtp::ConnectToHost:
QMessageBox::warning( this, tr("Error"), tr("Failed to connect to host.") );
ui.connectButton->setEnabled( true );
break;
case QFtp::Login:
QMessageBox::warning( this, tr("Error"), tr("Failed to login.") );
ui.connectButton->setEnabled( true );
break;
case QFtp::List:
QMessageBox::warning( this, tr("Error"), tr("Failed to get file list.\nClosing connection.") );
ftp.close();
break;
case QFtp::Cd:
QMessageBox::warning( this, tr("Error"), tr("Failed to change directory.") );
getFileList();
break;
case QFtp::Get:
QMessageBox::warning( this, tr("Error"), tr("Failed to get file?") );
file->close();
file->remove();
delete file;
file = 0;
ui.disconnectButton->setEnabled( true );
ui.upButton->setEnabled( true );
selectionChanged();
break;
}
ui.statusLabel->setText( tr("Ready.") );
}
else
{
switch( ftp.currentCommand() )
{
case QFtp::ConnectToHost:
ftp.login();
break;
case QFtp::Login:
getFileList();
break;
case QFtp::Close:
ui.connectButton->setEnabled( true );
getFileList();
break;
case QFtp::List:
ui.disconnectButton->setEnabled( true );
ui.upButton->setEnabled( true );
ui.statusLabel->setText( tr("Ready.") );
break;
case QFtp::Cd:
getFileList();
break;
case QFtp::Get:
file->close();
delete file;
file = 0;
ui.disconnectButton->setEnabled( true );
ui.upButton->setEnabled( true );
selectionChanged();
ui.statusLabel->setText( tr("Ready.") );
break;
}
}
}
Foundations of Qt Development\Chapter14\ftp\ftpdialog.h
/*
* Copyright (c) 2006-2007, Johan Thelin
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* * Neither the name of APress nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#ifndef FTPDIALOG_H
#define FTPDIALOG_H
#include <QFtp>
#include <QDialog>
#include <QFile>
#include "ui_ftpdialog.h"
class FtpDialog : public QDialog
{
Q_OBJECT
public:
FtpDialog();
private slots:
void connectClicked();
void disconnectClicked();
void cdClicked();
void upClicked();
void getClicked();
void selectionChanged();
void ftpFinished(int,bool);
void ftpListInfo(QUrlInfo);
void ftpProgress(qint64,qint64);
private:
void getFileList();
Ui::FtpDialog ui;
QFtp ftp;
QFile *file;
QStringList files;
};
#endif // FTPDIALOG_H
Foundations of Qt Development\Chapter14\ftp\main.cpp
/*
* Copyright (c) 2006-2007, Johan Thelin
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* * Neither the name of APress nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#include <QApplication>
#include "ftpdialog.h"
int main( int argc, char **argv )
{
QApplication app( argc, argv );
FtpDialog dlg;
dlg.show();
return app.exec();
}
| 1. | QFtp base ftp window |