webpage.cpp Example File

webenginewidgets/simplebrowser/webpage.cpp
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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