mirror of
https://github.com/facebook/react-native.git
synced 2025-11-01 09:14:26 +00:00
Samuel Susla
01805636b9
Summary: Changelog: [internal] 1. Moves `ShadowNode::getAncestors` to `ShadowNodeFamily`. 2. Exposes shadowNode's family through `ShadowNode::getFamily()`. # Why? This is a first step in order to merge `StateCoordinator` into `ShadowNodeFamily` and use it as target for state updates. Reviewed By: shergin Differential Revision: D19465188 fbshipit-source-id: b5a3625aa21c040301259de02beedbf97e11f20e
68 lines
1.9 KiB
C++
68 lines
1.9 KiB
C++
/*
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* Copyright (c) Facebook, Inc. and its affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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#pragma once
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#include <memory>
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#include <react/components/root/RootProps.h>
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#include <react/components/view/ConcreteViewShadowNode.h>
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#include <react/core/LayoutContext.h>
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namespace facebook {
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namespace react {
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class RootShadowNode;
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extern const char RootComponentName[];
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/*
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* `ShadowNode` for the root component.
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* Besides all functionality of the `View` component, `RootShadowNode` contains
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* props which represent external layout constraints and context of the
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* shadow tree.
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*/
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class RootShadowNode final
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: public ConcreteViewShadowNode<RootComponentName, RootProps> {
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public:
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using ConcreteViewShadowNode::ConcreteViewShadowNode;
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using Shared = std::shared_ptr<RootShadowNode const>;
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using Unshared = std::shared_ptr<RootShadowNode>;
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/*
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* Layouts the shadow tree.
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*/
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void layout(std::vector<LayoutableShadowNode const *> *affectedNodes = {});
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/*
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* Clones the node with given `layoutConstraints` and `layoutContext`.
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*/
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RootShadowNode::Unshared clone(
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LayoutConstraints const &layoutConstraints,
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LayoutContext const &layoutContext) const;
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/*
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* Clones the node (and partially the tree starting from the node) by
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* replacing a `oldShadowNode` (which corresponds to a given `shadowNode`)
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* with a node that `callback` returns. `oldShadowNode` might not be the same
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* as `shadowNode` but they must share the same family.
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*
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* Returns `nullptr` if the operation cannot be performed successfully.
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*/
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RootShadowNode::Unshared clone(
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ShadowNodeFamily const &shadowNodeFamily,
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std::function<ShadowNode::Unshared(ShadowNode const &oldShadowNode)>
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callback) const;
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private:
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using YogaLayoutableShadowNode::layout;
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};
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} // namespace react
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} // namespace facebook
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