--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/examples/network/http/httpwindow.cpp Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,262 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 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(const 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(const QHttpResponseHeader &)),
+ this, SLOT(readResponseHeader(const QHttpResponseHeader &)));
+ connect(http, SIGNAL(authenticationRequired(const QString &, quint16, QAuthenticator *)),
+ this, SLOT(slotAuthenticationRequired(const QString &, quint16, QAuthenticator *)));
+#ifndef QT_NO_OPENSSL
+ connect(http, SIGNAL(sslErrors(const QList<QSslError> &)),
+ this, SLOT(sslErrors(const 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