Prepare to remove style support again

SineStriker

2023-12-22 a5d13e19dd7f6037e10b649c49805922ae5e0fa6

 src/core/windowagentbase.cpp

@@ -50,37 +50,29 @@

    WindowAgentBase::~WindowAgentBase() = default;

    QVariant WindowAgentBase::windowAttribute(const QString &key) const {
        Q_D(const WindowAgentBase);
        return d->context->windowAttribute(key);
    }

    bool WindowAgentBase::setWindowAttribute(const QString &key, const QVariant &attribute) {
        Q_D(WindowAgentBase);
        return d->context->setWindowAttribute(key, attribute);
    }

    void WindowAgentBase::showSystemMenu(const QPoint &pos) {
        Q_D(WindowAgentBase);
        d->context->showSystemMenu(pos);
    }

    void WindowAgentBase::startSystemMove(const QPoint &pos) {
        Q_D(WindowAgentBase);
        auto win = d->context->window();
        if (!win) {
            return;
        }

        Q_UNUSED(pos)
        win->startSystemMove();
    }

    void WindowAgentBase::startSystemResize(Qt::Edges edges, const QPoint &pos) {
        Q_D(WindowAgentBase);
        auto win = d->context->window();
        if (!win) {
            return;
        }

        Q_UNUSED(pos)
        win->startSystemResize(edges);
    }

    void WindowAgentBase::centralize() {
        Q_D(WindowAgentBase);
        d->context->virtual_hook(AbstractWindowContext::CentralizeHook, nullptr);
    }

    void WindowAgentBase::raise() {
        Q_D(WindowAgentBase);
        d->context->virtual_hook(AbstractWindowContext::RaiseWindowHook, nullptr);
    }

    WindowAgentBase::WindowAgentBase(WindowAgentBasePrivate &d, QObject *parent)