source: trunk/examples/network/qftp/ftpwindow.cpp@ 1030

Last change on this file since 1030 was 846, checked in by Dmitry A. Kuminov, 14 years ago

trunk: Merged in qt 4.7.2 sources from branches/vendor/nokia/qt.
  • Property svn:eol-style set to native
File size: 13.0 KB
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1/****************************************************************************
2**
3** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
4** All rights reserved.
5** Contact: Nokia Corporation ([email protected])
6**
7** This file is part of the examples of the Qt Toolkit.
8**
9** $QT_BEGIN_LICENSE:BSD$
10** You may use this file under the terms of the BSD license as follows:
11**
12** "Redistribution and use in source and binary forms, with or without
13** modification, are permitted provided that the following conditions are
14** met:
15** * Redistributions of source code must retain the above copyright
16** notice, this list of conditions and the following disclaimer.
17** * Redistributions in binary form must reproduce the above copyright
18** notice, this list of conditions and the following disclaimer in
19** the documentation and/or other materials provided with the
20** distribution.
21** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
22** the names of its contributors may be used to endorse or promote
23** products derived from this software without specific prior written
24** permission.
25**
26** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
27** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
28** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
29** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
30** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
31** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
32** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
33** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
34** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
35** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
36** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
37** $QT_END_LICENSE$
38**
39****************************************************************************/
40
41#include <QtGui>
42#include <QtNetwork>
43
44#include "ftpwindow.h"
45
46FtpWindow::FtpWindow(QWidget *parent)
47 : QDialog(parent), ftp(0), networkSession(0)
48{
49 ftpServerLabel = new QLabel(tr("Ftp &server:"));
50 ftpServerLineEdit = new QLineEdit("ftp.qt.nokia.com");
51 ftpServerLabel->setBuddy(ftpServerLineEdit);
52
53 statusLabel = new QLabel(tr("Please enter the name of an FTP server."));
54#ifdef Q_OS_SYMBIAN
55 // Use word wrapping to fit the text on screen
56 statusLabel->setWordWrap( true );
57#endif
58
59 fileList = new QTreeWidget;
60 fileList->setEnabled(false);
61 fileList->setRootIsDecorated(false);
62 fileList->setHeaderLabels(QStringList() << tr("Name") << tr("Size") << tr("Owner") << tr("Group") << tr("Time"));
63 fileList->header()->setStretchLastSection(false);
64
65 connectButton = new QPushButton(tr("Connect"));
66 connectButton->setDefault(true);
67
68 cdToParentButton = new QPushButton;
69 cdToParentButton->setIcon(QPixmap(":/images/cdtoparent.png"));
70 cdToParentButton->setEnabled(false);
71
72 downloadButton = new QPushButton(tr("Download"));
73 downloadButton->setEnabled(false);
74
75 quitButton = new QPushButton(tr("Quit"));
76
77 buttonBox = new QDialogButtonBox;
78 buttonBox->addButton(downloadButton, QDialogButtonBox::ActionRole);
79 buttonBox->addButton(quitButton, QDialogButtonBox::RejectRole);
80
81 progressDialog = new QProgressDialog(this);
82
83 connect(fileList, SIGNAL(itemActivated(QTreeWidgetItem*,int)),
84 this, SLOT(processItem(QTreeWidgetItem*,int)));
85 connect(fileList, SIGNAL(currentItemChanged(QTreeWidgetItem*,QTreeWidgetItem*)),
86 this, SLOT(enableDownloadButton()));
87 connect(progressDialog, SIGNAL(canceled()), this, SLOT(cancelDownload()));
88 connect(connectButton, SIGNAL(clicked()), this, SLOT(connectOrDisconnect()));
89 connect(cdToParentButton, SIGNAL(clicked()), this, SLOT(cdToParent()));
90 connect(downloadButton, SIGNAL(clicked()), this, SLOT(downloadFile()));
91 connect(quitButton, SIGNAL(clicked()), this, SLOT(close()));
92
93 QHBoxLayout *topLayout = new QHBoxLayout;
94 topLayout->addWidget(ftpServerLabel);
95 topLayout->addWidget(ftpServerLineEdit);
96#ifndef Q_OS_SYMBIAN
97 topLayout->addWidget(cdToParentButton);
98 topLayout->addWidget(connectButton);
99#else
100 // Make app better lookin on small screen
101 QHBoxLayout *topLayout2 = new QHBoxLayout;
102 topLayout2->addWidget(cdToParentButton);
103 topLayout2->addWidget(connectButton);
104#endif
105
106 QVBoxLayout *mainLayout = new QVBoxLayout;
107 mainLayout->addLayout(topLayout);
108#ifdef Q_OS_SYMBIAN
109 // Make app better lookin on small screen
110 mainLayout->addLayout(topLayout2);
111#endif
112 mainLayout->addWidget(fileList);
113 mainLayout->addWidget(statusLabel);
114 mainLayout->addWidget(buttonBox);
115 setLayout(mainLayout);
116
117 QNetworkConfigurationManager manager;
118 if (manager.capabilities() & QNetworkConfigurationManager::NetworkSessionRequired) {
119 // Get saved network configuration
120 QSettings settings(QSettings::UserScope, QLatin1String("Trolltech"));
121 settings.beginGroup(QLatin1String("QtNetwork"));
122 const QString id = settings.value(QLatin1String("DefaultNetworkConfiguration")).toString();
123 settings.endGroup();
124
125 // If the saved network configuration is not currently discovered use the system default
126 QNetworkConfiguration config = manager.configurationFromIdentifier(id);
127 if ((config.state() & QNetworkConfiguration::Discovered) !=
128 QNetworkConfiguration::Discovered) {
129 config = manager.defaultConfiguration();
130 }
131
132 networkSession = new QNetworkSession(config, this);
133 connect(networkSession, SIGNAL(opened()), this, SLOT(enableConnectButton()));
134
135 connectButton->setEnabled(false);
136 statusLabel->setText(tr("Opening network session."));
137 networkSession->open();
138 }
139
140 setWindowTitle(tr("FTP"));
141}
142
143QSize FtpWindow::sizeHint() const
144{
145 return QSize(500, 300);
146}
147
148//![0]
149void FtpWindow::connectOrDisconnect()
150{
151 if (ftp) {
152 ftp->abort();
153 ftp->deleteLater();
154 ftp = 0;
155//![0]
156 fileList->setEnabled(false);
157 cdToParentButton->setEnabled(false);
158 downloadButton->setEnabled(false);
159 connectButton->setEnabled(true);
160 connectButton->setText(tr("Connect"));
161#ifndef QT_NO_CURSOR
162 setCursor(Qt::ArrowCursor);
163#endif
164 statusLabel->setText(tr("Please enter the name of an FTP server."));
165 return;
166 }
167
168#ifndef QT_NO_CURSOR
169 setCursor(Qt::WaitCursor);
170#endif
171
172//![1]
173 ftp = new QFtp(this);
174 connect(ftp, SIGNAL(commandFinished(int,bool)),
175 this, SLOT(ftpCommandFinished(int,bool)));
176 connect(ftp, SIGNAL(listInfo(QUrlInfo)),
177 this, SLOT(addToList(QUrlInfo)));
178 connect(ftp, SIGNAL(dataTransferProgress(qint64,qint64)),
179 this, SLOT(updateDataTransferProgress(qint64,qint64)));
180
181 fileList->clear();
182 currentPath.clear();
183 isDirectory.clear();
184//![1]
185
186//![2]
187 QUrl url(ftpServerLineEdit->text());
188 if (!url.isValid() || url.scheme().toLower() != QLatin1String("ftp")) {
189 ftp->connectToHost(ftpServerLineEdit->text(), 21);
190 ftp->login();
191 } else {
192 ftp->connectToHost(url.host(), url.port(21));
193
194 if (!url.userName().isEmpty())
195 ftp->login(QUrl::fromPercentEncoding(url.userName().toLatin1()), url.password());
196 else
197 ftp->login();
198 if (!url.path().isEmpty())
199 ftp->cd(url.path());
200 }
201//![2]
202
203 fileList->setEnabled(true);
204 connectButton->setEnabled(false);
205 connectButton->setText(tr("Disconnect"));
206 statusLabel->setText(tr("Connecting to FTP server %1...")
207 .arg(ftpServerLineEdit->text()));
208}
209
210//![3]
211void FtpWindow::downloadFile()
212{
213 QString fileName = fileList->currentItem()->text(0);
214//![3]
215//
216 if (QFile::exists(fileName)) {
217 QMessageBox::information(this, tr("FTP"),
218 tr("There already exists a file called %1 in "
219 "the current directory.")
220 .arg(fileName));
221 return;
222 }
223
224//![4]
225 file = new QFile(fileName);
226 if (!file->open(QIODevice::WriteOnly)) {
227 QMessageBox::information(this, tr("FTP"),
228 tr("Unable to save the file %1: %2.")
229 .arg(fileName).arg(file->errorString()));
230 delete file;
231 return;
232 }
233
234 ftp->get(fileList->currentItem()->text(0), file);
235
236 progressDialog->setLabelText(tr("Downloading %1...").arg(fileName));
237 downloadButton->setEnabled(false);
238 progressDialog->exec();
239}
240//![4]
241
242//![5]
243void FtpWindow::cancelDownload()
244{
245 ftp->abort();
246}
247//![5]
248
249//![6]
250void FtpWindow::ftpCommandFinished(int, bool error)
251{
252#ifndef QT_NO_CURSOR
253 setCursor(Qt::ArrowCursor);
254#endif
255
256 if (ftp->currentCommand() == QFtp::ConnectToHost) {
257 if (error) {
258 QMessageBox::information(this, tr("FTP"),
259 tr("Unable to connect to the FTP server "
260 "at %1. Please check that the host "
261 "name is correct.")
262 .arg(ftpServerLineEdit->text()));
263 connectOrDisconnect();
264 return;
265 }
266 statusLabel->setText(tr("Logged onto %1.")
267 .arg(ftpServerLineEdit->text()));
268 fileList->setFocus();
269 downloadButton->setDefault(true);
270 connectButton->setEnabled(true);
271 return;
272 }
273//![6]
274
275//![7]
276 if (ftp->currentCommand() == QFtp::Login)
277 ftp->list();
278//![7]
279
280//![8]
281 if (ftp->currentCommand() == QFtp::Get) {
282 if (error) {
283 statusLabel->setText(tr("Canceled download of %1.")
284 .arg(file->fileName()));
285 file->close();
286 file->remove();
287 } else {
288 statusLabel->setText(tr("Downloaded %1 to current directory.")
289 .arg(file->fileName()));
290 file->close();
291 }
292 delete file;
293 enableDownloadButton();
294 progressDialog->hide();
295//![8]
296//![9]
297 } else if (ftp->currentCommand() == QFtp::List) {
298 if (isDirectory.isEmpty()) {
299 fileList->addTopLevelItem(new QTreeWidgetItem(QStringList() << tr("<empty>")));
300 fileList->setEnabled(false);
301 }
302 }
303//![9]
304}
305
306//![10]
307void FtpWindow::addToList(const QUrlInfo &urlInfo)
308{
309 QTreeWidgetItem *item = new QTreeWidgetItem;
310 item->setText(0, urlInfo.name());
311 item->setText(1, QString::number(urlInfo.size()));
312 item->setText(2, urlInfo.owner());
313 item->setText(3, urlInfo.group());
314 item->setText(4, urlInfo.lastModified().toString("MMM dd yyyy"));
315
316 QPixmap pixmap(urlInfo.isDir() ? ":/images/dir.png" : ":/images/file.png");
317 item->setIcon(0, pixmap);
318
319 isDirectory[urlInfo.name()] = urlInfo.isDir();
320 fileList->addTopLevelItem(item);
321 if (!fileList->currentItem()) {
322 fileList->setCurrentItem(fileList->topLevelItem(0));
323 fileList->setEnabled(true);
324 }
325}
326//![10]
327
328//![11]
329void FtpWindow::processItem(QTreeWidgetItem *item, int /*column*/)
330{
331 QString name = item->text(0);
332 if (isDirectory.value(name)) {
333 fileList->clear();
334 isDirectory.clear();
335 currentPath += '/';
336 currentPath += name;
337 ftp->cd(name);
338 ftp->list();
339 cdToParentButton->setEnabled(true);
340#ifndef QT_NO_CURSOR
341 setCursor(Qt::WaitCursor);
342#endif
343 return;
344 }
345}
346//![11]
347
348//![12]
349void FtpWindow::cdToParent()
350{
351#ifndef QT_NO_CURSOR
352 setCursor(Qt::WaitCursor);
353#endif
354 fileList->clear();
355 isDirectory.clear();
356 currentPath = currentPath.left(currentPath.lastIndexOf('/'));
357 if (currentPath.isEmpty()) {
358 cdToParentButton->setEnabled(false);
359 ftp->cd("/");
360 } else {
361 ftp->cd(currentPath);
362 }
363 ftp->list();
364}
365//![12]
366
367//![13]
368void FtpWindow::updateDataTransferProgress(qint64 readBytes,
369 qint64 totalBytes)
370{
371 progressDialog->setMaximum(totalBytes);
372 progressDialog->setValue(readBytes);
373}
374//![13]
375
376//![14]
377void FtpWindow::enableDownloadButton()
378{
379 QTreeWidgetItem *current = fileList->currentItem();
380 if (current) {
381 QString currentFile = current->text(0);
382 downloadButton->setEnabled(!isDirectory.value(currentFile));
383 } else {
384 downloadButton->setEnabled(false);
385 }
386}
387//![14]
388
389void FtpWindow::enableConnectButton()
390{
391 // Save the used configuration
392 QNetworkConfiguration config = networkSession->configuration();
393 QString id;
394 if (config.type() == QNetworkConfiguration::UserChoice)
395 id = networkSession->sessionProperty(QLatin1String("UserChoiceConfiguration")).toString();
396 else
397 id = config.identifier();
398
399 QSettings settings(QSettings::UserScope, QLatin1String("Trolltech"));
400 settings.beginGroup(QLatin1String("QtNetwork"));
401 settings.setValue(QLatin1String("DefaultNetworkConfiguration"), id);
402 settings.endGroup();
403
404 connectButton->setEnabled(networkSession->isOpen());
405 statusLabel->setText(tr("Please enter the name of an FTP server."));
406}
407
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