Method performViewNodeAction

valdi/src/valdi/android/NativeBridge.cpp:729–772

    auto javaEnv = ValdiAndroid::JavaEnv();
    auto javaArray = ValdiAndroid::toJavaObject(javaEnv, values);
    return javaArray.releaseObject();
}

jint ValdiAndroid::NativeBridge::performViewNodeAction( // NOLINT
    fbjni::alias_ref<fbjni::JClass> /* clazz */,        // NOLINT
    jlong viewNodeHandle,
    jint action,
    jint param1,
    jint param2) {
    static constexpr jint kActionEnsureFrameIsVisibleWithinParentScrolls = 1;
    static constexpr jint kActionScrollByOnePage = 2;

    auto viewNode = getViewNode(viewNodeHandle);
    if (viewNode == nullptr) {
        return 0;
    }

    jint handled = 0;

    auto* viewNodeTree = viewNode->getViewNodeTree();

    if (viewNodeTree == nullptr) {
        // TODO: is this a valid state?
        return 0;
    }

    viewNodeTree->withLock([&]() {
        auto& viewTransactionScope = viewNodeTree->getCurrentViewTransactionScope();
        if (action == kActionEnsureFrameIsVisibleWithinParentScrolls) {
            auto animated = static_cast<bool>(param1);
            viewNode->ensureFrameIsVisibleWithinParentScrolls(viewTransactionScope, animated);
            handled = 0;
            return;
        }

        if (action == kActionScrollByOnePage) {
            auto animated = static_cast<bool>(param1);
            auto scrollDirection = static_cast<Valdi::ScrollDirection>(param2);
            bool didScroll =
                viewNode->scrollByOnePage(viewTransactionScope, scrollDirection, animated, nullptr, nullptr);
            handled = didScroll ? 1 : 0;
            return;
        }
    });

    return handled;
}