414 lines
13 KiB
C++
414 lines
13 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the examples of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:BSD$
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** You may use this file under the terms of the BSD license as follows:
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**
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** "Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions are
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** met:
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** * Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** * Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in
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** the documentation and/or other materials provided with the
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** distribution.
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** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
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** the names of its contributors may be used to endorse or promote
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** products derived from this software without specific prior written
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** permission.
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**
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include <QtGui>
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#include <QtNetwork>
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#include "ftpwindow.h"
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FtpWindow::FtpWindow(QWidget *parent)
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: QDialog(parent), ftp(0), networkSession(0)
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{
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ftpServerLabel = new QLabel(tr("Ftp &server:"));
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ftpServerLineEdit = new QLineEdit("ftp.qt.nokia.com");
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ftpServerLabel->setBuddy(ftpServerLineEdit);
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statusLabel = new QLabel(tr("Please enter the name of an FTP server."));
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#if defined(Q_OS_SYMBIAN) || defined(Q_WS_MAEMO_5) || defined(Q_WS_SIMULATOR)
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// Use word wrapping to fit the text on screen
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statusLabel->setWordWrap( true );
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#endif
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fileList = new QTreeWidget;
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fileList->setEnabled(false);
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fileList->setRootIsDecorated(false);
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fileList->setHeaderLabels(QStringList() << tr("Name") << tr("Size") << tr("Owner") << tr("Group") << tr("Time"));
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fileList->header()->setStretchLastSection(false);
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connectButton = new QPushButton(tr("Connect"));
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connectButton->setDefault(true);
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cdToParentButton = new QPushButton;
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cdToParentButton->setIcon(QPixmap(":/images/cdtoparent.png"));
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cdToParentButton->setEnabled(false);
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downloadButton = new QPushButton(tr("Download"));
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downloadButton->setEnabled(false);
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quitButton = new QPushButton(tr("Quit"));
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buttonBox = new QDialogButtonBox;
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buttonBox->addButton(downloadButton, QDialogButtonBox::ActionRole);
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buttonBox->addButton(quitButton, QDialogButtonBox::RejectRole);
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progressDialog = new QProgressDialog(this);
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connect(fileList, SIGNAL(itemActivated(QTreeWidgetItem*,int)),
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this, SLOT(processItem(QTreeWidgetItem*,int)));
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connect(fileList, SIGNAL(currentItemChanged(QTreeWidgetItem*,QTreeWidgetItem*)),
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this, SLOT(enableDownloadButton()));
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connect(progressDialog, SIGNAL(canceled()), this, SLOT(cancelDownload()));
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connect(connectButton, SIGNAL(clicked()), this, SLOT(connectOrDisconnect()));
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connect(cdToParentButton, SIGNAL(clicked()), this, SLOT(cdToParent()));
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connect(downloadButton, SIGNAL(clicked()), this, SLOT(downloadFile()));
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connect(quitButton, SIGNAL(clicked()), this, SLOT(close()));
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QHBoxLayout *topLayout = new QHBoxLayout;
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topLayout->addWidget(ftpServerLabel);
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topLayout->addWidget(ftpServerLineEdit);
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#ifndef Q_OS_SYMBIAN
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topLayout->addWidget(cdToParentButton);
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topLayout->addWidget(connectButton);
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#else
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// Make app better lookin on small screen
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QHBoxLayout *topLayout2 = new QHBoxLayout;
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topLayout2->addWidget(cdToParentButton);
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topLayout2->addWidget(connectButton);
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#endif
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QVBoxLayout *mainLayout = new QVBoxLayout;
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mainLayout->addLayout(topLayout);
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#ifdef Q_OS_SYMBIAN
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// Make app better lookin on small screen
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mainLayout->addLayout(topLayout2);
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#endif
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mainLayout->addWidget(fileList);
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mainLayout->addWidget(statusLabel);
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mainLayout->addWidget(buttonBox);
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setLayout(mainLayout);
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QNetworkConfigurationManager manager;
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if (manager.capabilities() & QNetworkConfigurationManager::NetworkSessionRequired) {
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// Get saved network configuration
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QSettings settings(QSettings::UserScope, QLatin1String("Trolltech"));
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settings.beginGroup(QLatin1String("QtNetwork"));
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const QString id = settings.value(QLatin1String("DefaultNetworkConfiguration")).toString();
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settings.endGroup();
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// If the saved network configuration is not currently discovered use the system default
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QNetworkConfiguration config = manager.configurationFromIdentifier(id);
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if ((config.state() & QNetworkConfiguration::Discovered) !=
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QNetworkConfiguration::Discovered) {
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config = manager.defaultConfiguration();
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}
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networkSession = new QNetworkSession(config, this);
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connect(networkSession, SIGNAL(opened()), this, SLOT(enableConnectButton()));
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connectButton->setEnabled(false);
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statusLabel->setText(tr("Opening network session."));
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networkSession->open();
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}
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setWindowTitle(tr("FTP"));
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}
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QSize FtpWindow::sizeHint() const
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{
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return QSize(500, 300);
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}
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//![0]
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void FtpWindow::connectOrDisconnect()
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{
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if (ftp) {
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ftp->abort();
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ftp->deleteLater();
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ftp = 0;
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//![0]
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fileList->setEnabled(false);
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cdToParentButton->setEnabled(false);
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downloadButton->setEnabled(false);
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connectButton->setEnabled(true);
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connectButton->setText(tr("Connect"));
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#ifndef QT_NO_CURSOR
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setCursor(Qt::ArrowCursor);
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#endif
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statusLabel->setText(tr("Please enter the name of an FTP server."));
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return;
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}
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#ifndef QT_NO_CURSOR
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setCursor(Qt::WaitCursor);
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#endif
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//![1]
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ftp = new QFtp(this);
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connect(ftp, SIGNAL(commandFinished(int,bool)),
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this, SLOT(ftpCommandFinished(int,bool)));
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connect(ftp, SIGNAL(listInfo(QUrlInfo)),
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this, SLOT(addToList(QUrlInfo)));
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connect(ftp, SIGNAL(dataTransferProgress(qint64,qint64)),
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this, SLOT(updateDataTransferProgress(qint64,qint64)));
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fileList->clear();
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currentPath.clear();
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isDirectory.clear();
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//![1]
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//![2]
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QUrl url(ftpServerLineEdit->text());
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if (!url.isValid() || url.scheme().toLower() != QLatin1String("ftp")) {
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ftp->connectToHost(ftpServerLineEdit->text(), 21);
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ftp->login();
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} else {
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ftp->connectToHost(url.host(), url.port(21));
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if (!url.userName().isEmpty())
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ftp->login(QUrl::fromPercentEncoding(url.userName().toLatin1()), url.password());
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else
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ftp->login();
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if (!url.path().isEmpty())
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ftp->cd(url.path());
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}
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//![2]
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fileList->setEnabled(true);
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connectButton->setEnabled(false);
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connectButton->setText(tr("Disconnect"));
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statusLabel->setText(tr("Connecting to FTP server %1...")
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.arg(ftpServerLineEdit->text()));
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}
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//![3]
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void FtpWindow::downloadFile()
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{
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QString fileName = fileList->currentItem()->text(0);
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//![3]
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//
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if (QFile::exists(fileName)) {
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QMessageBox::information(this, tr("FTP"),
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tr("There already exists a file called %1 in "
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"the current directory.")
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.arg(fileName));
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return;
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}
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//![4]
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file = new QFile(fileName);
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if (!file->open(QIODevice::WriteOnly)) {
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QMessageBox::information(this, tr("FTP"),
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tr("Unable to save the file %1: %2.")
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.arg(fileName).arg(file->errorString()));
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delete file;
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return;
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}
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ftp->get(fileList->currentItem()->text(0), file);
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progressDialog->setLabelText(tr("Downloading %1...").arg(fileName));
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downloadButton->setEnabled(false);
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progressDialog->exec();
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}
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//![4]
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//![5]
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void FtpWindow::cancelDownload()
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{
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ftp->abort();
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if (file->exists()) {
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file->close();
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file->remove();
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}
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delete file;
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}
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//![5]
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//![6]
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void FtpWindow::ftpCommandFinished(int, bool error)
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{
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#ifndef QT_NO_CURSOR
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setCursor(Qt::ArrowCursor);
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#endif
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if (ftp->currentCommand() == QFtp::ConnectToHost) {
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if (error) {
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QMessageBox::information(this, tr("FTP"),
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tr("Unable to connect to the FTP server "
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"at %1. Please check that the host "
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"name is correct.")
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.arg(ftpServerLineEdit->text()));
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connectOrDisconnect();
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return;
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}
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statusLabel->setText(tr("Logged onto %1.")
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.arg(ftpServerLineEdit->text()));
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fileList->setFocus();
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downloadButton->setDefault(true);
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connectButton->setEnabled(true);
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return;
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}
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//![6]
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//![7]
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if (ftp->currentCommand() == QFtp::Login)
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ftp->list();
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//![7]
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//![8]
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if (ftp->currentCommand() == QFtp::Get) {
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if (error) {
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statusLabel->setText(tr("Canceled download of %1.")
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.arg(file->fileName()));
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file->close();
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file->remove();
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} else {
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statusLabel->setText(tr("Downloaded %1 to current directory.")
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.arg(file->fileName()));
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file->close();
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}
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delete file;
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enableDownloadButton();
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progressDialog->hide();
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//![8]
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//![9]
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} else if (ftp->currentCommand() == QFtp::List) {
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if (isDirectory.isEmpty()) {
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fileList->addTopLevelItem(new QTreeWidgetItem(QStringList() << tr("<empty>")));
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fileList->setEnabled(false);
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}
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}
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//![9]
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}
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//![10]
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void FtpWindow::addToList(const QUrlInfo &urlInfo)
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{
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QTreeWidgetItem *item = new QTreeWidgetItem;
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item->setText(0, urlInfo.name());
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item->setText(1, QString::number(urlInfo.size()));
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item->setText(2, urlInfo.owner());
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item->setText(3, urlInfo.group());
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item->setText(4, urlInfo.lastModified().toString("MMM dd yyyy"));
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QPixmap pixmap(urlInfo.isDir() ? ":/images/dir.png" : ":/images/file.png");
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item->setIcon(0, pixmap);
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isDirectory[urlInfo.name()] = urlInfo.isDir();
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fileList->addTopLevelItem(item);
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if (!fileList->currentItem()) {
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fileList->setCurrentItem(fileList->topLevelItem(0));
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fileList->setEnabled(true);
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}
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}
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//![10]
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//![11]
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void FtpWindow::processItem(QTreeWidgetItem *item, int /*column*/)
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{
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QString name = item->text(0);
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if (isDirectory.value(name)) {
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fileList->clear();
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isDirectory.clear();
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currentPath += '/';
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currentPath += name;
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ftp->cd(name);
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ftp->list();
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cdToParentButton->setEnabled(true);
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#ifndef QT_NO_CURSOR
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setCursor(Qt::WaitCursor);
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#endif
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return;
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}
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}
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//![11]
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//![12]
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void FtpWindow::cdToParent()
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{
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#ifndef QT_NO_CURSOR
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setCursor(Qt::WaitCursor);
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#endif
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fileList->clear();
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isDirectory.clear();
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currentPath = currentPath.left(currentPath.lastIndexOf('/'));
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if (currentPath.isEmpty()) {
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cdToParentButton->setEnabled(false);
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ftp->cd("/");
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} else {
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ftp->cd(currentPath);
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}
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ftp->list();
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}
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//![12]
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//![13]
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void FtpWindow::updateDataTransferProgress(qint64 readBytes,
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qint64 totalBytes)
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{
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progressDialog->setMaximum(totalBytes);
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progressDialog->setValue(readBytes);
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}
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//![13]
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//![14]
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void FtpWindow::enableDownloadButton()
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{
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QTreeWidgetItem *current = fileList->currentItem();
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if (current) {
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QString currentFile = current->text(0);
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downloadButton->setEnabled(!isDirectory.value(currentFile));
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} else {
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downloadButton->setEnabled(false);
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}
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}
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//![14]
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void FtpWindow::enableConnectButton()
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{
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// Save the used configuration
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QNetworkConfiguration config = networkSession->configuration();
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QString id;
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if (config.type() == QNetworkConfiguration::UserChoice)
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id = networkSession->sessionProperty(QLatin1String("UserChoiceConfiguration")).toString();
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else
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id = config.identifier();
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QSettings settings(QSettings::UserScope, QLatin1String("Trolltech"));
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settings.beginGroup(QLatin1String("QtNetwork"));
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settings.setValue(QLatin1String("DefaultNetworkConfiguration"), id);
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settings.endGroup();
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connectButton->setEnabled(networkSession->isOpen());
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statusLabel->setText(tr("Please enter the name of an FTP server."));
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}
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