WebEngine Widgets Simple Browser Example▲
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#include "browserwindow.h"
#include "tabwidget.h"
#include "ui_certificateerrordialog.h"
#include "ui_passworddialog.h"
#include "webpage.h"
#include "webview.h"
#include <QAuthenticator>
#include <QMessageBox>
#include <QStyle>
#include <QWebEngineCertificateError>
WebPage::WebPage(QWebEngineProfile *profile, QObject *parent)
: QWebEnginePage(profile, parent)
{
connect(this, &QWebEnginePage::authenticationRequired, this, &WebPage::handleAuthenticationRequired);
connect(this, &QWebEnginePage::featurePermissionRequested, this, &WebPage::handleFeaturePermissionRequested);
connect(this, &QWebEnginePage::proxyAuthenticationRequired, this, &WebPage::handleProxyAuthenticationRequired);
connect(this, &QWebEnginePage::registerProtocolHandlerRequested, this, &WebPage::handleRegisterProtocolHandlerRequested);
#if !defined(QT_NO_SSL) || QT_VERSION >= QT_VERSION_CHECK(5, 12, 0)
connect(this, &QWebEnginePage::selectClientCertificate, this, &WebPage::handleSelectClientCertificate);
#endif
}
bool WebPage::certificateError(const QWebEngineCertificateError &error)
{
QWidget *mainWindow = view()->window();
if (error.isOverridable()) {
QDialog dialog(mainWindow);
dialog.setModal(true);
dialog.setWindowFlags(dialog.windowFlags() & ~Qt::WindowContextHelpButtonHint);
Ui::CertificateErrorDialog certificateDialog;
certificateDialog.setupUi(&dialog);
certificateDialog.m_iconLabel->setText(QString());
QIcon icon(mainWindow->style()->standardIcon(QStyle::SP_MessageBoxWarning, 0, mainWindow));
certificateDialog.m_iconLabel->setPixmap(icon.pixmap(32, 32));
certificateDialog.m_errorLabel->setText(error.errorDescription());
dialog.setWindowTitle(tr("Certificate Error"));
return dialog.exec() == QDialog::Accepted;
}
QMessageBox::critical(mainWindow, tr("Certificate Error"), error.errorDescription());
return false;
}
void WebPage::handleAuthenticationRequired(const QUrl &requestUrl, QAuthenticator *auth)
{
QWidget *mainWindow = view()->window();
QDialog dialog(mainWindow);
dialog.setModal(true);
dialog.setWindowFlags(dialog.windowFlags() & ~Qt::WindowContextHelpButtonHint);
Ui::PasswordDialog passwordDialog;
passwordDialog.setupUi(&dialog);
passwordDialog.m_iconLabel->setText(QString());
QIcon icon(mainWindow->style()->standardIcon(QStyle::SP_MessageBoxQuestion, 0, mainWindow));
passwordDialog.m_iconLabel->setPixmap(icon.pixmap(32, 32));
QString introMessage(tr("Enter username and password for \"%1\" at %2")
.arg(auth->realm()).arg(requestUrl.toString().toHtmlEscaped()));
passwordDialog.m_infoLabel->setText(introMessage);
passwordDialog.m_infoLabel->setWordWrap(true);
if (dialog.exec() == QDialog::Accepted) {
auth->setUser(passwordDialog.m_userNameLineEdit->text());
auth->setPassword(passwordDialog.m_passwordLineEdit->text());
} else {
// Set authenticator null if dialog is cancelled
*auth = QAuthenticator();
}
}
inline QString questionForFeature(QWebEnginePage::Feature feature)
{
switch (feature) {
case QWebEnginePage::Geolocation:
return WebPage::tr("Allow %1 to access your location information?");
case QWebEnginePage::MediaAudioCapture:
return WebPage::tr("Allow %1 to access your microphone?");
case QWebEnginePage::MediaVideoCapture:
return WebPage::tr("Allow %1 to access your webcam?");
case QWebEnginePage::MediaAudioVideoCapture:
return WebPage::tr("Allow %1 to access your microphone and webcam?");
case QWebEnginePage::MouseLock:
return WebPage::tr("Allow %1 to lock your mouse cursor?");
case QWebEnginePage::DesktopVideoCapture:
return WebPage::tr("Allow %1 to capture video of your desktop?");
case QWebEnginePage::DesktopAudioVideoCapture:
return WebPage::tr("Allow %1 to capture audio and video of your desktop?");
case QWebEnginePage::Notifications:
return QString();
}
return QString();
}
void WebPage::handleFeaturePermissionRequested(const QUrl &securityOrigin, Feature feature)
{
QString title = tr("Permission Request");
QString question = questionForFeature(feature).arg(securityOrigin.host());
if (!question.isEmpty() && QMessageBox::question(view()->window(), title, question) == QMessageBox::Yes)
setFeaturePermission(securityOrigin, feature, PermissionGrantedByUser);
else
setFeaturePermission(securityOrigin, feature, PermissionDeniedByUser);
}
void WebPage::handleProxyAuthenticationRequired(const QUrl &, QAuthenticator *auth, const QString &proxyHost)
{
QWidget *mainWindow = view()->window();
QDialog dialog(mainWindow);
dialog.setModal(true);
dialog.setWindowFlags(dialog.windowFlags() & ~Qt::WindowContextHelpButtonHint);
Ui::PasswordDialog passwordDialog;
passwordDialog.setupUi(&dialog);
passwordDialog.m_iconLabel->setText(QString());
QIcon icon(mainWindow->style()->standardIcon(QStyle::SP_MessageBoxQuestion, 0, mainWindow));
passwordDialog.m_iconLabel->setPixmap(icon.pixmap(32, 32));
QString introMessage = tr("Connect to proxy \"%1\" using:");
introMessage = introMessage.arg(proxyHost.toHtmlEscaped());
passwordDialog.m_infoLabel->setText(introMessage);
passwordDialog.m_infoLabel->setWordWrap(true);
if (dialog.exec() == QDialog::Accepted) {
auth->setUser(passwordDialog.m_userNameLineEdit->text());
auth->setPassword(passwordDialog.m_passwordLineEdit->text());
} else {
// Set authenticator null if dialog is cancelled
*auth = QAuthenticator();
}
}
void WebPage::handleRegisterProtocolHandlerRequested(QWebEngineRegisterProtocolHandlerRequest request)
{
auto answer = QMessageBox::question(
view()->window(),
tr("Permission Request"),
tr("Allow %1 to open all %2 links?")
.arg(request.origin().host())
.arg(request.scheme()));
if (answer == QMessageBox::Yes)
request.accept();
else
request.reject();
}
#if !defined(QT_NO_SSL) || QT_VERSION >= QT_VERSION_CHECK(5, 12, 0)
void WebPage::handleSelectClientCertificate(QWebEngineClientCertificateSelection selection)
{
// Just select one.
selection.select(selection.certificates().at(0));
}
#endif