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/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QtGui>
#include <QtNetwork>
#include "httpwindow.h"
#include "ui_authenticationdialog.h"
HttpWindow::HttpWindow(QWidget *parent)
: QDialog(parent)
{
#ifndef QT_NO_OPENSSL
urlLineEdit = new QLineEdit("https://");
#else
urlLineEdit = new QLineEdit("http://");
#endif
urlLabel = new QLabel(tr("&URL:"));
urlLabel->setBuddy(urlLineEdit);
statusLabel = new QLabel(tr("Please enter the URL of a file you want to "
"download."));
downloadButton = new QPushButton(tr("Download"));
downloadButton->setDefault(true);
quitButton = new QPushButton(tr("Quit"));
quitButton->setAutoDefault(false);
buttonBox = new QDialogButtonBox;
buttonBox->addButton(downloadButton, QDialogButtonBox::ActionRole);
buttonBox->addButton(quitButton, QDialogButtonBox::RejectRole);
progressDialog = new QProgressDialog(this);
http = new QHttp(this);
connect(urlLineEdit, SIGNAL(textChanged(QString)),
this, SLOT(enableDownloadButton()));
connect(http, SIGNAL(requestFinished(int,bool)),
this, SLOT(httpRequestFinished(int,bool)));
connect(http, SIGNAL(dataReadProgress(int,int)),
this, SLOT(updateDataReadProgress(int,int)));
connect(http, SIGNAL(responseHeaderReceived(QHttpResponseHeader)),
this, SLOT(readResponseHeader(QHttpResponseHeader)));
connect(http, SIGNAL(authenticationRequired(QString,quint16,QAuthenticator*)),
this, SLOT(slotAuthenticationRequired(QString,quint16,QAuthenticator*)));
#ifndef QT_NO_OPENSSL
connect(http, SIGNAL(sslErrors(QList<QSslError>)),
this, SLOT(sslErrors(QList<QSslError>)));
#endif
connect(progressDialog, SIGNAL(canceled()), this, SLOT(cancelDownload()));
connect(downloadButton, SIGNAL(clicked()), this, SLOT(downloadFile()));
connect(quitButton, SIGNAL(clicked()), this, SLOT(close()));
QHBoxLayout *topLayout = new QHBoxLayout;
topLayout->addWidget(urlLabel);
topLayout->addWidget(urlLineEdit);
QVBoxLayout *mainLayout = new QVBoxLayout;
mainLayout->addLayout(topLayout);
mainLayout->addWidget(statusLabel);
mainLayout->addWidget(buttonBox);
setLayout(mainLayout);
setWindowTitle(tr("HTTP"));
urlLineEdit->setFocus();
}
void HttpWindow::downloadFile()
{
QUrl url(urlLineEdit->text());
QFileInfo fileInfo(url.path());
QString fileName = fileInfo.fileName();
if (fileName.isEmpty())
fileName = "index.html";
if (QFile::exists(fileName)) {
if (QMessageBox::question(this, tr("HTTP"),
tr("There already exists a file called %1 in "
"the current directory. Overwrite?").arg(fileName),
QMessageBox::Yes|QMessageBox::No, QMessageBox::No)
== QMessageBox::No)
return;
QFile::remove(fileName);
}
file = new QFile(fileName);
if (!file->open(QIODevice::WriteOnly)) {
QMessageBox::information(this, tr("HTTP"),
tr("Unable to save the file %1: %2.")
.arg(fileName).arg(file->errorString()));
delete file;
file = 0;
return;
}
QHttp::ConnectionMode mode = url.scheme().toLower() == "https" ? QHttp::ConnectionModeHttps : QHttp::ConnectionModeHttp;
http->setHost(url.host(), mode, url.port() == -1 ? 0 : url.port());
if (!url.userName().isEmpty())
http->setUser(url.userName(), url.password());
httpRequestAborted = false;
QByteArray path = QUrl::toPercentEncoding(url.path(), "!$&'()*+,;=:@/");
if (path.isEmpty())
path = "/";
httpGetId = http->get(path, file);
progressDialog->setWindowTitle(tr("HTTP"));
progressDialog->setLabelText(tr("Downloading %1.").arg(fileName));
downloadButton->setEnabled(false);
}
void HttpWindow::cancelDownload()
{
statusLabel->setText(tr("Download canceled."));
httpRequestAborted = true;
http->abort();
downloadButton->setEnabled(true);
}
void HttpWindow::httpRequestFinished(int requestId, bool error)
{
if (requestId != httpGetId)
return;
if (httpRequestAborted) {
if (file) {
file->close();
file->remove();
delete file;
file = 0;
}
progressDialog->hide();
return;
}
if (requestId != httpGetId)
return;
progressDialog->hide();
file->close();
if (error) {
file->remove();
QMessageBox::information(this, tr("HTTP"),
tr("Download failed: %1.")
.arg(http->errorString()));
} else {
QString fileName = QFileInfo(QUrl(urlLineEdit->text()).path()).fileName();
statusLabel->setText(tr("Downloaded %1 to current directory.").arg(fileName));
}
downloadButton->setEnabled(true);
delete file;
file = 0;
}
void HttpWindow::readResponseHeader(const QHttpResponseHeader &responseHeader)
{
switch (responseHeader.statusCode()) {
case 200: // Ok
case 301: // Moved Permanently
case 302: // Found
case 303: // See Other
case 307: // Temporary Redirect
// these are not error conditions
break;
default:
QMessageBox::information(this, tr("HTTP"),
tr("Download failed: %1.")
.arg(responseHeader.reasonPhrase()));
httpRequestAborted = true;
progressDialog->hide();
http->abort();
}
}
void HttpWindow::updateDataReadProgress(int bytesRead, int totalBytes)
{
if (httpRequestAborted)
return;
progressDialog->setMaximum(totalBytes);
progressDialog->setValue(bytesRead);
}
void HttpWindow::enableDownloadButton()
{
downloadButton->setEnabled(!urlLineEdit->text().isEmpty());
}
void HttpWindow::slotAuthenticationRequired(const QString &hostName, quint16, QAuthenticator *authenticator)
{
QDialog dlg;
Ui::Dialog ui;
ui.setupUi(&dlg);
dlg.adjustSize();
ui.siteDescription->setText(tr("%1 at %2").arg(authenticator->realm()).arg(hostName));
if (dlg.exec() == QDialog::Accepted) {
authenticator->setUser(ui.userEdit->text());
authenticator->setPassword(ui.passwordEdit->text());
}
}
#ifndef QT_NO_OPENSSL
void HttpWindow::sslErrors(const QList<QSslError> &errors)
{
QString errorString;
foreach (const QSslError &error, errors) {
if (!errorString.isEmpty())
errorString += ", ";
errorString += error.errorString();
}
if (QMessageBox::warning(this, tr("HTTP Example"),
tr("One or more SSL errors has occurred: %1").arg(errorString),
QMessageBox::Ignore | QMessageBox::Abort) == QMessageBox::Ignore) {
http->ignoreSslErrors();
}
}
#endif
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