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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Qt Software Information (qt-info@nokia.com)
**
** This file is part of the Graphics Dojo project on Qt Labs.
**
** This file may be used under the terms of the GNU General Public
** License version 2.0 or 3.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of
** this file. Please review the following information to ensure GNU
** General Public Licensing requirements will be met:
** http://www.fsf.org/licensing/licenses/info/GPLv2.html and
** http://www.gnu.org/copyleft/gpl.html.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at qt-sales@nokia.com.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
****************************************************************************/
#include <QtGui>
#include <QtNetwork>
#include <QtWebKit>
#include <QtXmlPatterns>
#include "mainwindow.h"
MainWindow::MainWindow(QWidget *parent, Qt::WFlags flags)
: QMainWindow(parent, flags), m_view(0)
{
statusBar()->showMessage(tr("Ready"));
ui.setupUi(this);
connect(ui.action_Quit, SIGNAL(triggered()), qApp, SLOT(quit()));
connect(ui.action_About, SIGNAL(triggered()), this, SLOT(about()));
connect(ui.actionAbout_Qt, SIGNAL(triggered()), this, SLOT(aboutQt()));
QWebSettings *defaultSettings = QWebSettings::globalSettings();
defaultSettings->setAttribute(QWebSettings::JavascriptEnabled, true);
defaultSettings->setAttribute(QWebSettings::PluginsEnabled, true);
QWebSettings::setOfflineStoragePath(QDesktopServices::storageLocation(QDesktopServices::DataLocation));
QWebSettings::setOfflineStorageDefaultQuota(500000);
m_rssModel = new QStandardItemModel(this);
populateFeedsMenu();
m_feedGroup->actions().last()->setChecked(true);
QTimer::singleShot(0, this, SLOT(changeFeed()));
m_view = new QWebView(this);
m_view->move(-1000, -1000);
ui.webView->page()->mainFrame()->load(QUrl("qrc:/html/videoplayer.html"));
QSortFilterProxyModel *filterModel = new QSortFilterProxyModel(this);
filterModel->setSourceModel(m_rssModel);
filterModel->setDynamicSortFilter(true);
filterModel->setFilterRole(SearchRole);
filterModel->setFilterCaseSensitivity(Qt::CaseInsensitive);
filterModel->setFilterKeyColumn(0);
connect(ui.searchEdit, SIGNAL(textChanged(QString)), filterModel, SLOT(setFilterFixedString(QString)));
ui.treeView->setModel(filterModel);
ui.treeView->header()->hide();
connect(ui.treeView, SIGNAL(activated(QModelIndex)), this, SLOT(loadVideo(QModelIndex)));
QShortcut *clearHistoryShortcut = new QShortcut(QKeySequence(tr("Ctrl+Alt+X", "Clear history")), this);
connect(clearHistoryShortcut, SIGNAL(activated()), this, SLOT(clearHistory()));
}
MainWindow::~MainWindow()
{
}
void MainWindow::about()
{
QMessageBox::about(this, tr("About %1").arg(windowTitle()),
tr("Demo of Qt/WebKit flash support"));
}
void MainWindow::aboutQt()
{
QMessageBox::aboutQt(this);
}
void MainWindow::clearHistory()
{
ui.webView->page()->mainFrame()->evaluateJavaScript("clearHistory()");
statusBar()->showMessage(tr("History cleared"));
}
void MainWindow::populateFeedsMenu()
{
QDirIterator it(":/rss", QStringList("*.ini"));
m_feedGroup = new QActionGroup(this);
m_feedGroup->setExclusive(true);
while (it.hasNext()) {
QString fileName = it.next();
QSettings settings(fileName, QSettings::IniFormat);
QAction *action = new QAction(m_feedGroup);
action->setText(settings.value("feed/name").toString());
action->setCheckable(true);
FeedInfo fi;
fi.name = settings.value("feed/name").toString();
fi.uri = settings.value("feed/uri").toString();
fi.titleFilter = settings.value("feed/titleFilter").toString();
QFile query(it.path() + "/" + settings.value("feed/query").toString());
query.open(QFile::ReadOnly);
fi.query = query.readAll();
fi.embedDiv = settings.value("feed/embedDiv").toString();
QVariant variant;
variant.setValue<FeedInfo>(fi);
action->setData(variant);
m_feedGroup->addAction(action);
}
ui.menu_Feeds->addActions(m_feedGroup->actions());
connect(m_feedGroup, SIGNAL(triggered(QAction *)), this, SLOT(changeFeed()));
}
MainWindow::FeedInfo MainWindow::currentFeedInfo() const
{
QAction *action = m_feedGroup->checkedAction();
return action->data().value<FeedInfo>();
}
void MainWindow::changeFeed()
{
loadFeed(currentFeedInfo());
}
void MainWindow::loadFeed(const MainWindow::FeedInfo &fi)
{
m_rssModel->clear();
QStandardItem *root = m_rssModel->invisibleRootItem();
QStandardItem *item = new QStandardItem(tr("Loading feed, please wait..."));
item->setFlags(Qt::NoItemFlags);
root->appendRow(item);
QXmlQuery query;
const QString uri = fi.uri.toString();
const QString DELIMITER = " %%QT_DEMO_DELIM%% ";
query.bindVariable("uri", QVariant(uri));
query.setQuery(fi.query);
QStringList result;
// ##: evaluteTo loads the URI with its own event loop. This means that we will
// hit some rescursion with signals/slots. We ignore such bugs in this example.
// To avoid it we will have to load the uro ourselves.
query.evaluateTo(&result);
statusBar()->showMessage(tr("Feed has %1 items").arg(result.count()));
m_rssModel->clear();
root = m_rssModel->invisibleRootItem();
for (int i = 0; i < result.size(); i++) {
QStandardItem *item = new QStandardItem;
QStringList arr = result.at(i).split(DELIMITER);
QString titleStr = arr.at(0);
titleStr.remove(QRegExp(fi.titleFilter));
item->setText(titleStr);
item->setData(arr.at(0), TitleRole);
item->setData(arr.at(1), AuthorRole);
item->setData(arr.at(2), DescriptionRole);
item->setData(arr.at(3), SubTitleRole);
item->setData(arr.at(4), PageLinkRole);
item->setData(arr.at(5), DownloadRole);
item->setData(arr.at(6), PublishedDateRole);
item->setData(arr.at(7), DurationRole);
item->setData(arr.at(0) + " " + arr.at(1) + " " + arr.at(2) + " " + arr.at(3), SearchRole);
item->setFlags(Qt::ItemIsSelectable | Qt::ItemIsEnabled);
root->appendRow(item);
}
setWindowTitle(tr("VideoFeed - %1").arg(fi.name));
}
static QString jsEscape(const QString &str, bool escapeSingleQuote = true)
{
QString string = str;
string.replace('\\', "\\\\");
if (escapeSingleQuote) {
string.replace('\'', "\\\'");
} else {
string.replace('"', "\\\"");
}
string.replace('\t', "\\t");
string.replace('\f', "\\f");
string.replace('\r', "\\r");
string.replace('\b', "\\b");
string.replace('\n', "\\n");
return string;
}
void MainWindow::loadVideo(const QModelIndex &index)
{
m_loadingIndex = index;
statusBar()->showMessage(tr("Loading video - %1").arg(index.data(TitleRole).toString()));
QString desc = index.data(DescriptionRole).toString();
ui.webView->page()->mainFrame()->evaluateJavaScript("showLoading('" + jsEscape(desc) + "')");
m_view->page()->mainFrame()->setUrl(QUrl(index.data(PageLinkRole).toString()));
disconnect(m_view, 0, this, 0);
connect(m_view, SIGNAL(loadFinished(bool)), this, SLOT(loadFinished(bool)));
}
void MainWindow::loadFinished(bool ok)
{
disconnect(m_view, 0, this, 0);
if (ok) {
statusBar()->showMessage(tr("Showing video"));
QString script = QString("document.getElementById('%1').innerHTML").arg(currentFeedInfo().embedDiv);
QString videoHtml = jsEscape(m_view->page()->mainFrame()->evaluateJavaScript(script).toString());
m_view->page()->mainFrame()->evaluateJavaScript("window.location.href='about:blank'");
QString title = jsEscape(m_loadingIndex.data(TitleRole).toString());
QString author = jsEscape(m_loadingIndex.data(AuthorRole).toString());
QString desc = jsEscape(m_loadingIndex.data(DescriptionRole).toString());
QString pubDate = jsEscape(m_loadingIndex.data(PublishedDateRole).toString());
QString duration = jsEscape(m_loadingIndex.data(DurationRole).toString());
#if 0
qDebug() << title;
qDebug() << author;
qDebug() << desc;
qDebug() << pubDate;
qDebug() << duration;
qDebug() << videoHtml;
#endif
ui.webView->page()->mainFrame()->evaluateJavaScript( // ###: pass JSON
QString("addVideo('%1', '%2', '%3', '%4', '%5', '%6')")
.arg(title)
.arg(author)
.arg(desc)
.arg(pubDate)
.arg(duration)
.arg(videoHtml)
);
} else {
statusBar()->showMessage(tr("Something bad happened"));
ui.webView->page()->mainFrame()->evaluateJavaScript("showLoadError()");
}
}
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