webview.cpp Example File

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  #include "webview.h"
  #include <QContextMenuEvent>
  #include <QMenu>
  #include <QWebEngineProfile>
  #include <QWebEngineContextMenuData>

  WebView::WebView(QWidget *parent)
      : QWebEngineView(parent)
  {
      m_spellCheckLanguages["English"] = "en-US";
      m_spellCheckLanguages["German"] = "de-DE";
      QWebEngineProfile *profile = page()->profile();
      profile->setSpellCheckEnabled(true);
      profile->setSpellCheckLanguages({"en-US"});
  }

  void WebView::contextMenuEvent(QContextMenuEvent *event)
  {
      const QWebEngineContextMenuData &data = page()->contextMenuData();
      Q_ASSERT(data.isValid());

      if (!data.isContentEditable()) {
          QWebEngineView::contextMenuEvent(event);
          return;
      }

      QWebEngineProfile *profile = page()->profile();
      const QStringList &languages = profile->spellCheckLanguages();
      QMenu *menu = page()->createStandardContextMenu();
      menu->addSeparator();

      QAction *spellcheckAction = new QAction(tr("Check Spelling"), nullptr);
      spellcheckAction->setCheckable(true);
      spellcheckAction->setChecked(profile->isSpellCheckEnabled());
      connect(spellcheckAction, &QAction::toggled, this, [profile](bool toogled) {
          profile->setSpellCheckEnabled(toogled);
      });
      menu->addAction(spellcheckAction);

      if (profile->isSpellCheckEnabled()) {
          QMenu *subMenu = menu->addMenu(tr("Select Language"));
          foreach (const QString &str, m_spellCheckLanguages.keys()) {
              QAction *action = subMenu->addAction(str);
              action->setCheckable(true);
              QString lang = m_spellCheckLanguages[str];
              action->setChecked(languages.contains(lang));
              connect(action, &QAction::triggered, this, [profile, lang](){
                 profile->setSpellCheckLanguages(QStringList()<<lang);
              });
          }
      }
      connect(menu, &QMenu::aboutToHide, menu, &QObject::deleteLater);
      menu->popup(event->globalPos());
  }