MainWindow
::MainWindow(QWidget *parent
){
/* Open rss feed combo. */
ListView * lv = new ListView;
combo->setView(lv);
combo->setEditable(true);
connect(combo, SIGNAL(activated(int)), this, SLOT(openRssFeed()));
tb->addWidget(combo);
/* Open RSS Feed button. */
act
->setIcon
(style
()->standardIcon
(QStyle::SP_BrowserReload));
connect(act, SIGNAL(triggered()), this, SLOT(openRssFeed()));
tb->addAction(act);
/* List-view to display list of stories. */
tv->setModel(model);
/* Progress bar to signal progress of RSS feed download and web page load. */
statusBar()->addPermanentWidget(progress);
/* Web-view to display articles. */
wv = new QWebView;
wv
->load
(QUrl("about:blank"));
connect(wv, SIGNAL(loadProgress(int)), progress, SLOT(setValue(int)));
splitter->addWidget(tv);
splitter->addWidget(wv);
this->setCentralWidget(splitter);
/* Load saved rss feeds. */
int size = settings.beginReadArray("rssFeeds");
for (int i = 0; i < size; i++)
{
settings.setArrayIndex(i);
QString url
= settings.
value("url").
toString();
combo->addItem(url);
}
settings.endArray();
if (size == 0)
{
/* Bonus RSS feed if the list is empty. */
combo->addItem("http://www.qtcentre.org/forum/external.php?type=RSS2");
}
/* Set up the network manager. */
manager = new QNetworkAccessManager(this);
connect(manager, SIGNAL(finished(QNetworkReply*)), this, SLOT(replyFinished(QNetworkReply*)));
}
MainWindow::~MainWindow()
{
/* Save our list of RSS feeds. */
settings.beginWriteArray("rssFeeds");
settings.remove("");
for (int i = 0; i < combo->count(); i++)
{
settings.setArrayIndex(i);
settings.setValue("url", combo->itemText(i));
}
settings.endArray();
}
void MainWindow
::listViewDoubleClicked(const QModelIndex &index
) {
/* Load article in the web-view. */
QString strLink
= index.
data(Qt
::UserRole).
toString();
}
void MainWindow::openRssFeed()
{
/* Search the combo box for duplicates before adding this item. */
int i = combo->findText(combo->currentText());
if (i != -1)
{
combo->setCurrentIndex(i);
}
else
{
combo->addItem(combo->currentText());
combo->setCurrentIndex(combo->count() - 1);
}
reply
= manager
->get
(QNetworkRequest
(QUrl(combo
->currentText
())));
connect(reply, SIGNAL(downloadProgress(qint64,qint64)), this, SLOT(downloadProgress(qint64,qint64)));
}
void MainWindow::downloadProgress(qint64 bytes, qint64 bytesTotal)
{
if (bytesTotal == -1)
{
/* No total bytes available, just set the progress bar to show a busy indicator. */
progress->setMinimum(0);
progress->setMaximum(0);
}
else
{
progress->setMaximum(100);
int percent = bytes * 100 / bytesTotal;
progress->setValue(percent);
}
}
void MainWindow::replyFinished(QNetworkReply * netReply)
{
/* If we are redirected, try again. TODO: Limit redirection count. */
QVariant vt
= netReply
->attribute
(QNetworkRequest
::RedirectionTargetAttribute);
delete reply;
if (!vt.isNull())
{
qDebug() << "Redirected to:" << vt.toUrl().toString();
reply = manager->get(QNetworkRequest(vt.toUrl()));
connect(reply, SIGNAL(downloadProgress(qint64,qint64)), this, SLOT(downloadProgress(qint64,qint64)));
}
else
{
/* We have something. */
if (!doc.setContent(str, false, &error))
{
wv
->setHtml
(QString("<h1>Error</h1>") + error
);
}
else
{
model->clear();
model->insertColumn(0);
for (uint i = 0; i < nodeList.length(); i++)
{
QString strTitle
= e.
elementsByTagName("title").
item(0).
firstChild().
nodeValue();
QString strLink
= e.
elementsByTagName("link").
item(0).
firstChild().
nodeValue();
QString strDescription
= e.
elementsByTagName("description").
item(0).
firstChild().
nodeValue();
QString strToolTip
= "<b>" + strTitle
+ "</b>" + "<br /><br />" + strDescription
+ "<br /><br />" + strLink;
model->insertRows(model->rowCount(), 1);
QModelIndex index
= model
->index
(model
->rowCount
() - 1,
0);
model->setData(index, strTitle, Qt::DisplayRole);
model
->setData
(index, style
()->standardIcon
(QStyle::SP_FileIcon), Qt
::DecorationRole);
model->setData(index, strToolTip, Qt::ToolTipRole);
model->setData(index, strLink, Qt::UserRole);
model->itemFromIndex(index)->setFlags(Qt::ItemIsSelectable | Qt::ItemIsEnabled);
}
}
}
}
/* Implements a list-view which supports the delete key. */
void ListView
::keyPressEvent(QKeyEvent * event
) {
if (event->key() == Qt::Key_Delete)
{
event->accept();
QModelIndexList l = selectedIndexes();
if (l.length() > 0)
{
model()->removeRow(l.at(0).row(), l.at(0).parent());
}
}
else
{
}
}
int main(int argc, char *argv[])
{
MainWindow w;
w.show();
return a.exec();
}
MainWindow::MainWindow(QWidget *parent)
: QMainWindow(parent)
{
QToolBar * tb = addToolBar(tr("Open"));
/* Open rss feed combo. */
combo = new QComboBox;
ListView * lv = new ListView;
combo->setView(lv);
combo->setEditable(true);
combo->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Preferred);
connect(combo, SIGNAL(activated(int)), this, SLOT(openRssFeed()));
tb->addWidget(combo);
/* Open RSS Feed button. */
QAction * act = new QAction(tr("Open RSS Feed"), this);
act->setIcon(style()->standardIcon(QStyle::SP_BrowserReload));
connect(act, SIGNAL(triggered()), this, SLOT(openRssFeed()));
tb->addAction(act);
/* List-view to display list of stories. */
tv = new QListView;
connect(tv, SIGNAL(doubleClicked(QModelIndex)), this, SLOT(listViewDoubleClicked(QModelIndex)));
model = new QStandardItemModel(0, 1, this);
tv->setModel(model);
/* Progress bar to signal progress of RSS feed download and web page load. */
progress = new QProgressBar;
statusBar()->addPermanentWidget(progress);
/* Web-view to display articles. */
wv = new QWebView;
wv->load(QUrl("about:blank"));
connect(wv, SIGNAL(loadProgress(int)), progress, SLOT(setValue(int)));
QSplitter * splitter = new QSplitter;
splitter->addWidget(tv);
splitter->addWidget(wv);
this->setCentralWidget(splitter);
/* Load saved rss feeds. */
QSettings settings;
int size = settings.beginReadArray("rssFeeds");
for (int i = 0; i < size; i++)
{
settings.setArrayIndex(i);
QString url = settings.value("url").toString();
combo->addItem(url);
}
settings.endArray();
if (size == 0)
{
/* Bonus RSS feed if the list is empty. */
combo->addItem("http://www.qtcentre.org/forum/external.php?type=RSS2");
}
/* Set up the network manager. */
manager = new QNetworkAccessManager(this);
connect(manager, SIGNAL(finished(QNetworkReply*)), this, SLOT(replyFinished(QNetworkReply*)));
}
MainWindow::~MainWindow()
{
/* Save our list of RSS feeds. */
QSettings settings;
settings.beginWriteArray("rssFeeds");
settings.remove("");
for (int i = 0; i < combo->count(); i++)
{
settings.setArrayIndex(i);
settings.setValue("url", combo->itemText(i));
}
settings.endArray();
}
void MainWindow::listViewDoubleClicked(const QModelIndex &index)
{
/* Load article in the web-view. */
QString strLink = index.data(Qt::UserRole).toString();
wv->load(QUrl(strLink));
}
void MainWindow::openRssFeed()
{
/* Search the combo box for duplicates before adding this item. */
int i = combo->findText(combo->currentText());
if (i != -1)
{
combo->setCurrentIndex(i);
}
else
{
combo->addItem(combo->currentText());
combo->setCurrentIndex(combo->count() - 1);
}
reply = manager->get(QNetworkRequest(QUrl(combo->currentText())));
connect(reply, SIGNAL(downloadProgress(qint64,qint64)), this, SLOT(downloadProgress(qint64,qint64)));
}
void MainWindow::downloadProgress(qint64 bytes, qint64 bytesTotal)
{
if (bytesTotal == -1)
{
/* No total bytes available, just set the progress bar to show a busy indicator. */
progress->setMinimum(0);
progress->setMaximum(0);
}
else
{
progress->setMaximum(100);
int percent = bytes * 100 / bytesTotal;
progress->setValue(percent);
}
}
void MainWindow::replyFinished(QNetworkReply * netReply)
{
QString str (netReply->readAll());
/* If we are redirected, try again. TODO: Limit redirection count. */
QVariant vt = netReply->attribute(QNetworkRequest::RedirectionTargetAttribute);
delete reply;
if (!vt.isNull())
{
qDebug() << "Redirected to:" << vt.toUrl().toString();
reply = manager->get(QNetworkRequest(vt.toUrl()));
connect(reply, SIGNAL(downloadProgress(qint64,qint64)), this, SLOT(downloadProgress(qint64,qint64)));
}
else
{
/* We have something. */
QDomDocument doc;
QString error;
if (!doc.setContent(str, false, &error))
{
wv->setHtml(QString("<h1>Error</h1>") + error);
}
else
{
QDomElement docElem = doc.documentElement();
QDomNodeList nodeList = docElem.elementsByTagName("item");
model->clear();
model->insertColumn(0);
for (uint i = 0; i < nodeList.length(); i++)
{
QDomNode node = nodeList.item(i);
QDomElement e = node.toElement();
QString strTitle = e.elementsByTagName("title").item(0).firstChild().nodeValue();
QString strLink = e.elementsByTagName("link").item(0).firstChild().nodeValue();
QString strDescription = e.elementsByTagName("description").item(0).firstChild().nodeValue();
QString strToolTip = "<b>" + strTitle + "</b>" + "<br /><br />" + strDescription + "<br /><br />" + strLink;
model->insertRows(model->rowCount(), 1);
QModelIndex index = model->index(model->rowCount() - 1, 0);
model->setData(index, strTitle, Qt::DisplayRole);
model->setData(index, style()->standardIcon(QStyle::SP_FileIcon), Qt::DecorationRole);
model->setData(index, strToolTip, Qt::ToolTipRole);
model->setData(index, strLink, Qt::UserRole);
model->itemFromIndex(index)->setFlags(Qt::ItemIsSelectable | Qt::ItemIsEnabled);
}
}
}
}
/* Implements a list-view which supports the delete key. */
void ListView::keyPressEvent(QKeyEvent * event)
{
if (event->key() == Qt::Key_Delete)
{
event->accept();
QModelIndexList l = selectedIndexes();
if (l.length() > 0)
{
model()->removeRow(l.at(0).row(), l.at(0).parent());
}
}
else
{
QListView::keyPressEvent(event);
}
}
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
MainWindow w;
w.show();
return a.exec();
}
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