Developer Documentation
downloader.cc
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41 
42 
43 
44 
45 
46 
47 #include "optionsWidget.hh"
48 #include <iostream>
50 #include <QMessageBox>
51 
52 void OptionsWidget::startDownload( QString _url ) {
53  QUrl url(_url);
54 
55  QFileInfo urlInfo(_url);
56 
57  // Download the file to the Home Directory
58  QFileInfo fileInfo( QDir::home().absolutePath() + OpenFlipper::Options::dirSeparator() +
59  ".OpenFlipper" + OpenFlipper::Options::dirSeparator() + urlInfo.fileName() );
60 
61  QString fileName = fileInfo.filePath();
62 
63  if (QFile::exists(fileName)) {
64  QFile::remove(fileName);
65  }
66 
67  file = new QFile(fileName);
68  if (!file->open(QIODevice::WriteOnly)) {
69  std::cerr << "Unable to Open local file " + fileName.toStdString() + " for writing" << std::endl;
70  delete file;
71  file = 0;
72  checkUpdateButton->setEnabled(true);
73  } else {
74  QNetworkRequest req;
75  req.setUrl(url);
76 
77  httpRequestAborted = false;
78  QByteArray path = QUrl::toPercentEncoding(url.path(), "!$&'()*+,;=:@/");
79  if (path.isEmpty())
80  path = "/";
81 
82  statusLabel->setText(tr("Getting Versions file from Server"));
83 
84  if ( ! progressDialog_ ) {
85  progressDialog_ = new QProgressDialog(this);
86  connect(progressDialog_, SIGNAL(canceled()), this, SLOT(cancelDownload()));
87  }
88  progressDialog_->setWindowTitle(tr("HTTP"));
89  progressDialog_->setLabelText(tr("Downloading %1.").arg(fileName));
90  progressDialog_->show();
91 
92  downloadRep_ = networkMan_->get(req);
93 
94  connect(downloadRep_, SIGNAL(error(QNetworkReply::NetworkError)),
95  this, SLOT(showError(QNetworkReply::NetworkError)));
96  connect(downloadRep_,SIGNAL(downloadProgress(qint64 , qint64 )),
97  this,SLOT(updateDataReadProgress(qint64 , qint64 )));
98 
99  checkUpdateButton->setEnabled(false);
100  }
101 
102 }
103 
104 void OptionsWidget::authentication ( QNetworkReply* _reply, QAuthenticator* _authenticator )
105 {
106  if ( ! updateUser->text().isEmpty() )
107  _authenticator->setUser(updateUser->text());
108 
109  if ( ! updatePass->text().isEmpty() )
110  _authenticator->setPassword(updatePass->text());
111 }
112 
113 void OptionsWidget::httpRequestFinished(QNetworkReply* _qnr)
114 {
115  if (_qnr != downloadRep_)
116  return;
117 
118  QNetworkReply::NetworkError error = _qnr->error();
119 
120  if (httpRequestAborted) {
121  if (file) {
122  file->close();
123  file->remove();
124  delete file;
125  file = 0;
126  }
127 
128  progressDialog_->hide();
129  checkUpdateButton->setEnabled(true);
130  return;
131  }
132 
133  progressDialog_->hide();
134  file->close();
135 
136  delete(progressDialog_);
137  progressDialog_ = 0;
138 
139  if (error != QNetworkReply::NoError) {
140  file->remove();
141  } else {
142  QString fileName = QFileInfo(QUrl(updateURL->text()).path()).fileName();
143  statusLabel->setText(tr("Downloaded %1").arg(file->fileName() ));
144  }
145 
146  checkUpdateButton->setEnabled(true);
147  delete file;
148  file = 0;
149 
150  if ( error == QNetworkReply::NoError ) {
151  if ( downloadType == VERSIONS_FILE )
152  compareVersions();
153  if ( downloadType == PLUGIN )
154  updateComponent();
155  }
156 }
157 
158 void OptionsWidget::cancelDownload()
159 {
160  statusLabel->setText(tr("download canceled."));
161  httpRequestAborted = true;
162  if (downloadRep_)
163  downloadRep_->abort();
164  checkUpdateButton->setEnabled(true);
165 }
166 
167 void OptionsWidget::updateDataReadProgress(qint64 _bytesReceived, qint64 _bytesTotal)
168 {
169  if (httpRequestAborted)
170  return;
171 
172  if (progressDialog_) {
173  progressDialog_->setMaximum(_bytesTotal);
174  progressDialog_->setValue(_bytesReceived);
175  }
176 }
177 
178 void OptionsWidget::showError(QNetworkReply::NetworkError _error)
179 {
180  if (_error == QNetworkReply::NoError)
181  return;
182  statusLabel->setText(tr("Download failed: %1.").arg(downloadRep_->errorString()));
183  QMessageBox::information(this, tr("HTTP Error"),
184  tr("Download failed: %1.")
185  .arg(downloadRep_->errorString()) + file->fileName() );
186 }
187 
188 
189 
190 
191 
void showError(QNetworkReply::NetworkError _error)
error occured while downloading
Definition: downloader.cc:178
void compareVersions()
Compares the versions from the downloaded Versions file with the current versions.
void startDownload(QString _url)
Starts the download of the given file.
Definition: downloader.cc:52
void authentication(QNetworkReply *_reply, QAuthenticator *_authenticator)
authentication
Definition: downloader.cc:104