60 строки
1.6 KiB
C++
60 строки
1.6 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/core/ComponentDescriptor.h>
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#include <react/core/ShadowNode.h>
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#include <react/core/ShadowNodeFamilyFragment.h>
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#include <react/core/ShadowNodeFragment.h>
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#include <react/uimanager/ComponentDescriptorRegistry.h>
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#include <react/element/Element.h>
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#include <react/element/ElementFragment.h>
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namespace facebook {
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namespace react {
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/*
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* Build `ShadowNode` trees with a given given `Element` trees.
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*/
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class ComponentBuilder final {
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public:
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ComponentBuilder(
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ComponentDescriptorRegistry::Shared const &componentDescriptorRegistry);
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/*
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* Copyable and movable.
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*/
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ComponentBuilder(ComponentBuilder const &componentBuilder) = default;
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ComponentBuilder(ComponentBuilder &&componentBuilder) noexcept = default;
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ComponentBuilder &operator=(ComponentBuilder const &other) = default;
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ComponentBuilder &operator=(ComponentBuilder &&other) = default;
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/*
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* Builds a `ShadowNode` tree with given `Element` tree using stored
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* `ComponentDescriptorRegistry`.
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*/
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template <typename ShadowNodeT>
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std::shared_ptr<ShadowNodeT> build(Element<ShadowNodeT> element) const {
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return std::static_pointer_cast<ShadowNodeT>(build(element.fragment_));
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}
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private:
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/*
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* Internal, type-erased version of `build`.
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*/
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ShadowNode::Unshared build(ElementFragment const &elementFragment) const;
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ComponentDescriptorRegistry::Shared componentDescriptorRegistry_;
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};
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} // namespace react
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} // namespace facebook
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