Class MapWrapper

src/NodeRTLib/ProjectFiles/CollectionsWrap.h:1642–1984

template <class K, class V>
class MapWrapper : 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:IMap")
            .ToLocalChecked());
    localRef->InstanceTemplate()->SetInternalFieldCount(1);

    Nan::SetPrototypeMethod(localRef, "hasKey", HasKey);
    Nan::SetPrototypeMethod(localRef, "lookup", Lookup);
    Nan::SetPrototypeMethod(localRef, "getView", GetView);
    Nan::SetPrototypeMethod(localRef, "clear", Clear);
    Nan::SetPrototypeMethod(localRef, "insert", Insert);
    Nan::SetPrototypeMethod(localRef, "remove", Remove);
    Nan::SetPrototypeMethod(localRef, "first", First);

    Nan::SetAccessor(localRef->PrototypeTemplate(),
                     Nan::New<String>("size").ToLocalChecked(), SizeGetter);
    Nan::SetAccessor(localRef->PrototypeTemplate(),
                     Nan::New<String>("length").ToLocalChecked(), SizeGetter);

    return;
  }

  static Local<Value> CreateMapWrapper(
      ::Windows::Foundation::Collections::IMap<K, V> ^ winRtInstance,
      const std::function<Local<Value>(K)>& keyGetterFunc,
      const std::function<bool(Local<Value>)>& checkKeyTypeFunc,
      const std::function<K(Local<Value>)>& convertToKeyTypeFunc,
      const std::function<Local<Value>(V)>& valueGetterFunc,
      const std::function<bool(Local<Value>)>& checkValueTypeFunc,
      const std::function<V(Local<Value>)>& convertToValueTypeFunc) {
    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());
    }

    MapWrapper<K, V>* wrapperInstance = new MapWrapper<K, V>(
        winRtInstance, keyGetterFunc, checkKeyTypeFunc, convertToKeyTypeFunc,
        valueGetterFunc, checkValueTypeFunc, convertToValueTypeFunc);