SimplePartWidget::SimplePartWidget(QWidget *parent, Imap::Network::MsgPartNetAccessManager *manager,
const QModelIndex &partIndex, MessageView *messageView):
EmbeddedWebView(parent, manager), m_partIndex(partIndex), m_messageView(messageView), m_netAccessManager(manager)
{
Q_ASSERT(partIndex.isValid());
if (m_messageView) {
connect(this, &QWebView::loadStarted, m_messageView, &MessageView::onWebViewLoadStarted);
connect(this, &QWebView::loadFinished, m_messageView, &MessageView::onWebViewLoadFinished);
}
QUrl url;
url.setScheme(QStringLiteral("trojita-imap"));
url.setHost(QStringLiteral("msg"));
url.setPath(partIndex.data(Imap::Mailbox::RolePartPathToPart).toString());
if (partIndex.data(Imap::Mailbox::RolePartMimeType).toString() == QLatin1String("text/plain")) {
if (partIndex.data(Imap::Mailbox::RolePartOctets).toULongLong() < 100 * 1024) {
connect(this, &QWebView::loadFinished, this, &SimplePartWidget::slotMarkupPlainText);
} else {
QFont font(QFontDatabase::systemFont(QFontDatabase::FixedFont));
setStaticWidth(QFontMetrics(font).maxWidth()*90);
addCustomStylesheet(QStringLiteral("pre{word-wrap:normal !important;white-space:pre !important;}"));
QWebSettings *s = settings();
s->setFontFamily(QWebSettings::StandardFont, font.family());
}
}
load(url);
m_savePart = new QAction(UiUtils::loadIcon(QStringLiteral("document-save")), tr("Save this message part..."), this);
connect(m_savePart, &QAction::triggered, this, &SimplePartWidget::slotDownloadPart);
this->addAction(m_savePart);
m_saveMessage = new QAction(UiUtils::loadIcon(QStringLiteral("document-save-all")), tr("Save whole message..."), this);
connect(m_saveMessage, &QAction::triggered, this, &SimplePartWidget::slotDownloadMessage);
this->addAction(m_saveMessage);
m_findAction = new QAction(UiUtils::loadIcon(QStringLiteral("edit-find")), tr("Search..."), this);
m_findAction->setShortcut(tr("Ctrl+F"));
connect(m_findAction, &QAction::triggered, this, &SimplePartWidget::searchDialogRequested);
addAction(m_findAction);
setContextMenuPolicy(Qt::CustomContextMenu);
// It is actually OK to construct this widget without any connection to a messageView -- this is often used when
// displaying message source or message headers. Let's silence the QObject::connect warning.
if (m_messageView) {
connect(this, &QWidget::customContextMenuRequested, m_messageView, &MessageView::partContextMenuRequested);
connect(this, &SimplePartWidget::searchDialogRequested, m_messageView, &MessageView::triggerSearchDialog);
// The targets expect the sender() of the signal to be a SimplePartWidget, not a QWebPage,
// which means we have to do this indirection
connect(page(), &QWebPage::linkHovered, this, &SimplePartWidget::linkHovered);
connect(this, &SimplePartWidget::linkHovered, m_messageView, &MessageView::partLinkHovered);
connect(page(), &QWebPage::downloadRequested, this, &SimplePartWidget::slotDownloadImage);
installEventFilter(m_messageView);
}
}
EmbeddedWebView::EmbeddedWebView(QWidget *parent, QNetworkAccessManager *networkManager)
: QWebView(parent)
, m_scrollParent(nullptr)
, m_resizeInProgress(0)
, m_staticWidth(0)
, m_colorScheme(ColorScheme::System)
{
// set to expanding, ie. "freely" - this is important so the widget will attempt to shrink below the sizehint!
setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
setFocusPolicy(Qt::StrongFocus); // not by the wheel
setPage(new ErrorCheckingPage(this));
page()->setNetworkAccessManager(networkManager);
QWebSettings *s = settings();
s->setAttribute(QWebSettings::JavascriptEnabled, false);
s->setAttribute(QWebSettings::JavaEnabled, false);
s->setAttribute(QWebSettings::PluginsEnabled, false);
s->setAttribute(QWebSettings::PrivateBrowsingEnabled, true);
s->setAttribute(QWebSettings::JavaEnabled, false);
s->setAttribute(QWebSettings::OfflineStorageDatabaseEnabled, false);
s->setAttribute(QWebSettings::OfflineWebApplicationCacheEnabled, false);
s->setAttribute(QWebSettings::LocalStorageDatabaseEnabled, false);
s->clearMemoryCaches();
page()->setLinkDelegationPolicy(QWebPage::DelegateAllLinks);
connect(this, &QWebView::linkClicked, this, &EmbeddedWebView::slotLinkClicked);
connect(this, &QWebView::loadFinished, this, &EmbeddedWebView::handlePageLoadFinished);
connect(page()->mainFrame(), &QWebFrame::contentsSizeChanged, this, &EmbeddedWebView::handlePageLoadFinished);
// Scrolling is implemented on upper layers
page()->mainFrame()->setScrollBarPolicy(Qt::Horizontal, Qt::ScrollBarAlwaysOff);
page()->mainFrame()->setScrollBarPolicy(Qt::Vertical, Qt::ScrollBarAlwaysOff);
// Setup shortcuts for standard actions
QAction *copyAction = page()->action(QWebPage::Copy);
copyAction->setShortcut(tr("Ctrl+C"));
addAction(copyAction);
m_autoScrollTimer = new QTimer(this);
m_autoScrollTimer->setInterval(50);
connect(m_autoScrollTimer, &QTimer::timeout, this, &EmbeddedWebView::autoScroll);
m_sizeContrainTimer = new QTimer(this);
m_sizeContrainTimer->setInterval(50);
m_sizeContrainTimer->setSingleShot(true);
connect(m_sizeContrainTimer, &QTimer::timeout, this, &EmbeddedWebView::constrainSize);
setContextMenuPolicy(Qt::NoContextMenu);
findScrollParent();
addCustomStylesheet(QString());
}
void EmbeddedWebView::setColorScheme(const ColorScheme colorScheme)
{
m_colorScheme = colorScheme;
addCustomStylesheet(m_customCss);
}
