Method eventFilter

plugins/contextbrowser/browsemanager.cpp:142–254

}

bool BrowseManager::eventFilter(QObject* watched, QEvent* event)
{
    QWidget* widget = qobject_cast<QWidget*>(watched);
    Q_ASSERT(widget);

    auto* keyEvent = dynamic_cast<QKeyEvent*>(event);

    const int browseKey = Qt::Key_Control;
    const int magicModifier = Qt::Key_Alt;

#if KTEXTEDITOR_VERSION >= QT_VERSION_CHECK(6, 20, 0)
    auto* const view = KTextEditor::View::fromEditorWidget(widget);
#else
    auto* const view = qobject_cast<KTextEditor::View*>(widget->parent());
#endif
    if (!view) {
        qCCritical(PLUGIN_CONTEXTBROWSER) << "the view of the editor widget" << widget << "is null";
    }

    //Eventually start key-browsing
    if (keyEvent && (keyEvent->key() == browseKey || keyEvent->key() == magicModifier) && !m_browsingByKey &&
        keyEvent->type() == QEvent::KeyPress) {
        m_delayedBrowsingTimer->start(); // always start the timer, to get consistent behavior regarding the ALT key and the menu activation
        m_browsingByKey = keyEvent->key();

        if (!view) {
            return false;
        }

        if (keyEvent->key() == magicModifier) {
            if (view->isCompletionActive()) {
                //Completion is active.
                avoidMenuAltFocus();
                m_delayedBrowsingTimer->stop();
            } else {
                m_browsingStartedInView = view;
            }
        }
    }

    if (keyEvent && m_browsingByKey && m_browsingStartedInView && keyEvent->type() == QEvent::KeyPress) {
        if (keyEvent->key() >= Qt::Key_1 && keyEvent->key() <= Qt::Key_9) {
            // user wants to trigger an action in the code browser
            const int index = keyEvent->key() - Qt::Key_1;
            emit invokeAction(index);
            emit stopDelayedBrowsing();
            return true;
        }
    }

    if (!view) {
        return false;
    }

    auto* focusEvent = dynamic_cast<QFocusEvent*>(event);
    //Eventually stop key-browsing
    if ((keyEvent && m_browsingByKey && ( keyEvent->key() == m_browsingByKey || keyEvent->modifiers() == Qt::ControlModifier ) && keyEvent->type() == QEvent::KeyRelease)
        || (focusEvent && focusEvent->lostFocus()) || event->type() == QEvent::WindowDeactivate) {