rssguard/src/librssguard/gui/messagebrowser.cpp
2024-03-21 09:53:01 +01:00

232 lines
7.6 KiB
C++

// For license of this file, see <project-root-folder>/LICENSE.md.
#include "gui/messagebrowser.h"
#include "gui/messagebox.h"
#include "gui/messagetextbrowser.h"
#include "gui/reusable/searchtextwidget.h"
#include "miscellaneous/application.h"
#include "miscellaneous/settings.h"
#include "network-web/webfactory.h"
#include "services/abstract/serviceroot.h"
#include <QKeyEvent>
#include <QRegularExpression>
#include <QScrollBar>
#include <QToolTip>
#include <QVBoxLayout>
MessageBrowser::MessageBrowser(bool should_resize_to_fit, QWidget* parent)
: QWidget(parent), m_txtBrowser(new MessageTextBrowser(this)), m_searchWidget(new SearchTextWidget(this)),
m_layout(new QVBoxLayout(this)) {
m_layout->setContentsMargins(3, 3, 3, 3);
m_layout->addWidget(m_txtBrowser, 1);
m_layout->addWidget(m_searchWidget);
if (should_resize_to_fit) {
m_txtBrowser->setSizePolicy(QSizePolicy::Policy::Preferred, QSizePolicy::Policy::MinimumExpanding);
}
connect(m_searchWidget, &SearchTextWidget::searchCancelled, this, [this]() {
m_txtBrowser->textCursor().clearSelection();
m_txtBrowser->moveCursor(QTextCursor::MoveOperation::Left);
});
connect(m_searchWidget, &SearchTextWidget::searchForText, this, [this](const QString& text, bool backwards) {
if (backwards) {
m_txtBrowser->find(text, QTextDocument::FindFlag::FindBackward);
}
else {
m_txtBrowser->find(text);
}
});
connect(m_txtBrowser, &QTextBrowser::anchorClicked, this, &MessageBrowser::onAnchorClicked);
connect(m_txtBrowser, QOverload<const QUrl&>::of(&QTextBrowser::highlighted), [=](const QUrl& url) {
Q_UNUSED(url)
QToolTip::showText(QCursor::pos(), tr("Click this link to download it or open it with external browser."), this);
});
m_searchWidget->hide();
installEventFilter(this);
reloadFontSettings();
}
void MessageBrowser::clear(bool also_hide) {
m_txtBrowser->clear();
m_pictures.clear();
m_searchWidget->hide();
if (also_hide) {
hide();
}
}
QString MessageBrowser::prepareHtmlForMessage(const Message& message) {
QString html = QString("<h2 align=\"center\">%1</h2>").arg(message.m_title);
if (!message.m_url.isEmpty()) {
html += QString("[url] <a href=\"%1\">%1</a><br/>").arg(message.m_url);
}
for (const Enclosure& enc : message.m_enclosures) {
QString enc_url;
if (!enc.m_url.contains(QRegularExpression(QSL("^(http|ftp|\\/)")))) {
enc_url = QString(INTERNAL_URL_PASSATTACHMENT) + QL1S("/?") + enc.m_url;
}
else {
enc_url = enc.m_url;
}
html += QString("[%2] <a href=\"%1\">%1</a><br/>").arg(enc_url, enc.m_mimeType);
}
QRegularExpression imgTagRegex("\\<img[^\\>]*src\\s*=\\s*[\"\']([^\"\']*)[\"\'][^\\>]*\\>",
QRegularExpression::PatternOption::CaseInsensitiveOption |
QRegularExpression::PatternOption::InvertedGreedinessOption);
QRegularExpressionMatchIterator i = imgTagRegex.globalMatch(message.m_contents);
QString pictures_html;
while (i.hasNext()) {
QRegularExpressionMatch match = i.next();
m_pictures.append(match.captured(1));
pictures_html += QString("<br/>[%1] <a href=\"%2\">%2</a>").arg(tr("image"), match.captured(1));
}
if (qApp->settings()->value(GROUP(Messages), SETTING(Messages::DisplayImagePlaceholders)).toBool()) {
html += message.m_contents;
}
else {
QString cnts = message.m_contents;
html += cnts.replace(imgTagRegex, QString());
}
html += pictures_html;
/*html = html
.replace(QSL("\r\n"), QSL("\n"))
.replace(QL1C('\r'), QL1C('\n'))
.remove(QL1C('\n'));*/
// TODO: If FgInteresting not defined by the skin
// use current pallette/Highlight color perhaps.E
return QSL("<html>"
"<head><style>"
"a { color: %2; }"
"</style></head>"
"<body>%1</body>"
"</html>")
.arg(html,
qApp->skins()->currentSkin().colorForModel(SkinEnums::PaletteColors::FgInteresting).value<QColor>().name());
}
bool MessageBrowser::eventFilter(QObject* watched, QEvent* event) {
Q_UNUSED(watched)
if (event->type() == QEvent::Type::KeyPress) {
auto* key_event = static_cast<QKeyEvent*>(event);
if (key_event->matches(QKeySequence::StandardKey::Find)) {
m_searchWidget->clear();
m_searchWidget->show();
m_searchWidget->setFocus();
return true;
}
else if (key_event->key() == Qt::Key::Key_Escape) {
m_searchWidget->cancelSearch();
return true;
}
}
return false;
}
void MessageBrowser::onAnchorClicked(const QUrl& url) {
if (url.toString().startsWith(INTERNAL_URL_PASSATTACHMENT) && m_root != nullptr &&
m_root->getParentServiceRoot()->downloadAttachmentOnMyOwn(url)) {
return;
}
if (!url.isEmpty()) {
bool open_externally_now =
qApp->settings()->value(GROUP(Browser), SETTING(Browser::OpenLinksInExternalBrowserRightAway)).toBool();
if (open_externally_now) {
qApp->web()->openUrlInExternalBrowser(url.toString());
}
else {
// User clicked some URL. Open it in external browser or download?
MsgBox box(qApp->mainFormWidget());
box.setText(tr("You clicked some link. You can download the link contents or open it in external web browser."));
box.setInformativeText(tr("What action do you want to take?"));
box.setDetailedText(url.toString());
QAbstractButton* btn_open = box.addButton(tr("Open in external browser"), QMessageBox::ButtonRole::ActionRole);
QAbstractButton* btn_download = box.addButton(tr("Download"), QMessageBox::ButtonRole::ActionRole);
QAbstractButton* btn_cancel = box.addButton(QMessageBox::StandardButton::Cancel);
bool always;
MsgBox::setCheckBox(&box, tr("Always open links in external browser."), &always);
box.setDefaultButton(QMessageBox::StandardButton::Cancel);
box.exec();
if (box.clickedButton() != box.button(QMessageBox::StandardButton::Cancel)) {
// Store selected checkbox value.
qApp->settings()->setValue(GROUP(Browser), Browser::OpenLinksInExternalBrowserRightAway, always);
}
if (box.clickedButton() == btn_open) {
qApp->web()->openUrlInExternalBrowser(url.toString());
}
else if (box.clickedButton() == btn_download) {
qApp->downloadManager()->download(url);
}
btn_download->deleteLater();
btn_open->deleteLater();
btn_cancel->deleteLater();
}
}
else {
MsgBox::show(qApp->mainFormWidget(),
QMessageBox::Warning,
tr("Incorrect link"),
tr("Selected hyperlink is invalid."));
}
}
void MessageBrowser::reloadFontSettings() {
const Settings* settings = qApp->settings();
QFont fon;
fon.fromString(settings->value(GROUP(Messages), SETTING(Messages::PreviewerFontStandard)).toString());
m_txtBrowser->setFont(fon);
}
void MessageBrowser::loadUrl(const QString& url) {
onAnchorClicked(url);
}
void MessageBrowser::loadMessage(const Message& message, RootItem* root) {
Q_UNUSED(root)
auto html = prepareHtmlForMessage(message);
m_txtBrowser->setHtml(html);
m_txtBrowser->verticalScrollBar()->triggerAction(QScrollBar::SliderAction::SliderToMinimum);
m_searchWidget->hide();
}
double MessageBrowser::verticalScrollBarPosition() const {
return m_txtBrowser->verticalScrollBar()->value();
}
void MessageBrowser::setVerticalScrollBarPosition(double pos) {
m_txtBrowser->verticalScrollBar()->setValue(pos);
}