Class KeyValuePairWrapper

src/NodeRTLib/ProjectFiles/CollectionsWrap.h:1250–1368

template <class K, class V>
class KeyValuePairWrapper : NodeRT::WrapperBase {
 public:
  static void Init() {
    HandleScope scope;

    Local<FunctionTemplate> localRef = Nan::New<FunctionTemplate>(New);
    s_constructorTemplate.Reset(localRef);
    localRef->SetClassName(
        Nan::New<String>("Windows::Foundation::Collections:IKeyValuePair")
            .ToLocalChecked());
    localRef->InstanceTemplate()->SetInternalFieldCount(1);

    Nan::SetAccessor(localRef->PrototypeTemplate(),
                     Nan::New<String>("key").ToLocalChecked(), KeyGetter);
    Nan::SetAccessor(localRef->PrototypeTemplate(),
                     Nan::New<String>("value").ToLocalChecked(), ValueGetter);

    return;
  }

  static Local<Value> CreateKeyValuePairWrapper(
      ::Windows::Foundation::Collections::IKeyValuePair<K, V> ^ winRtInstance,
      const std::function<Local<Value>(K)>& keyGetterFunc,
      const std::function<Local<Value>(V)>& valueGetterFunc) {
    EscapableHandleScope scope;
    if (winRtInstance == nullptr) {
      return scope.Escape(Undefined());
    }

    if (s_constructorTemplate.IsEmpty()) {
      Init();
    }

    v8::Local<Value> args[] = {Undefined()};
    Local<FunctionTemplate> localRef =
        Nan::New<FunctionTemplate>(s_constructorTemplate);
    Local<Object> objectInstance =
        Nan::NewInstance(Nan::GetFunction(localRef).ToLocalChecked(), 0, args)
            .ToLocalChecked();
    if (objectInstance.IsEmpty()) {
      return scope.Escape(Undefined());
    }

    KeyValuePairWrapper<K, V>* wrapperInstance = new KeyValuePairWrapper<K, V>(
        winRtInstance, keyGetterFunc, valueGetterFunc);
    wrapperInstance->Wrap(objectInstance);
    return scope.Escape(objectInstance);
  }

  virtual ::Platform::Object ^ GetObjectInstance() const override {
    return _instance;
  }

 private:
  KeyValuePairWrapper(::Windows::Foundation::Collections::IKeyValuePair<K, V> ^
                          winRtInstance,
                      const std::function<Local<Value>(K)>& keyGetterFunc,
                      const std::function<Local<Value>(V)>& valueGetterFunc)