mirror of
https://github.com/facebook/react-native.git
synced 2025-11-01 09:14:26 +00:00
Valentin Shergin
4ae9ec128d
Summary: Reasons: * The name of the method now better represent what it's doing; * It exposes information about "dirty" state of the node without opening actual `LayoutableShadowNode` protected APIs; * It's a tiny bit faster now because it checks the flag before calling Yoga. Changelog: [Internal] Fabric-specific internal change. Reviewed By: sammy-SC Differential Revision: D19596282 fbshipit-source-id: 3d87d9d5ba20bb8e360683f149b5ebf90beecd65
67 lines
1.9 KiB
C++
67 lines
1.9 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 <memory>
|
|
|
|
#include <react/components/root/RootProps.h>
|
|
#include <react/components/view/ConcreteViewShadowNode.h>
|
|
#include <react/core/LayoutContext.h>
|
|
|
|
namespace facebook {
|
|
namespace react {
|
|
|
|
class RootShadowNode;
|
|
|
|
extern const char RootComponentName[];
|
|
|
|
/*
|
|
* `ShadowNode` for the root component.
|
|
* Besides all functionality of the `View` component, `RootShadowNode` contains
|
|
* props which represent external layout constraints and context of the
|
|
* shadow tree.
|
|
*/
|
|
class RootShadowNode final
|
|
: public ConcreteViewShadowNode<RootComponentName, RootProps> {
|
|
public:
|
|
using ConcreteViewShadowNode::ConcreteViewShadowNode;
|
|
|
|
using Shared = std::shared_ptr<RootShadowNode const>;
|
|
using Unshared = std::shared_ptr<RootShadowNode>;
|
|
|
|
/*
|
|
* Layouts the shadow tree if needed.
|
|
* Returns `false` if the three is already laid out.
|
|
*/
|
|
bool layoutIfNeeded(
|
|
std::vector<LayoutableShadowNode const *> *affectedNodes = {});
|
|
|
|
/*
|
|
* Clones the node with given `layoutConstraints` and `layoutContext`.
|
|
*/
|
|
RootShadowNode::Unshared clone(
|
|
LayoutConstraints const &layoutConstraints,
|
|
LayoutContext const &layoutContext) const;
|
|
|
|
/*
|
|
* Clones the node (and partially the tree starting from the node) by
|
|
* replacing a `oldShadowNode` (which corresponds to a given `shadowNode`)
|
|
* with a node that `callback` returns. `oldShadowNode` might not be the same
|
|
* as `shadowNode` but they must share the same family.
|
|
*
|
|
* Returns `nullptr` if the operation cannot be performed successfully.
|
|
*/
|
|
RootShadowNode::Unshared clone(
|
|
ShadowNodeFamily const &shadowNodeFamily,
|
|
std::function<ShadowNode::Unshared(ShadowNode const &oldShadowNode)>
|
|
callback) const;
|
|
};
|
|
|
|
} // namespace react
|
|
} // namespace facebook
|