react-native-macos/ReactCommon/fabric/core/shadownode/ShadowNodeFamilyFragment.h

57 строки
1.4 KiB
C++

/*
* Copyright (c) Facebook, Inc. and its affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
#pragma once
#include <react/core/EventEmitter.h>
#include <react/core/ReactPrimitives.h>
namespace facebook {
namespace react {
class ShadowNodeFamily;
/*
* Note: All of the fields are `const &` references (essentially just raw
* pointers) which means that the Fragment does not copy/store them nor
* retain ownership of them.
*/
class ShadowNodeFamilyFragment final {
public:
static ShadowNodeFamilyFragment build(ShadowNodeFamily const &family);
Tag const tag;
SurfaceId const surfaceId;
EventEmitter::Shared const &eventEmitter;
/*
* `ShadowNodeFamilyFragment` is not owning data-structure, it only stores raw
* pointers to the data. `ShadowNodeFamilyFragment::Value` is a convenient
* owning counterpart of that.
*/
class Value final {
public:
/*
* Creates an object with given `ShadowNodeFragment`.
*/
Value(ShadowNodeFamilyFragment const &fragment);
/*
* Creates a `ShadowNodeFragment` from the object.
*/
explicit operator ShadowNodeFamilyFragment() const;
private:
Tag const tag_;
SurfaceId const surfaceId_;
EventEmitter::Shared const eventEmitter_;
};
};
} // namespace react
} // namespace facebook