mirror of
https://github.com/facebook/react-native.git
synced 2025-11-01 09:14:26 +00:00
Valentin Shergin
184cfd5594
Summary: So, changes: * Correctness checks only in debug mode (codesize win?); * `registerInstance` marked as const (because it's thread safe); * ContextContainer::Shared also enforces constness; * Using faster better::map; * Using shared/RW mutex instead of regular one; * SharedContextContainer got removed. Reviewed By: sahrens Differential Revision: D14920284 fbshipit-source-id: f0f8d970e7fae79a1abe3bc32827db9fd2d17e13
60 lines
1.7 KiB
C++
60 lines
1.7 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 <react/components/image/ImageShadowNode.h>
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#include <react/core/ConcreteComponentDescriptor.h>
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#include <react/imagemanager/ImageManager.h>
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#include <react/utils/ContextContainer.h>
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namespace facebook {
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namespace react {
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/*
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* Descriptor for <Image> component.
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*/
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class ImageComponentDescriptor final
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: public ConcreteComponentDescriptor<ImageShadowNode> {
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public:
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ImageComponentDescriptor(
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EventDispatcher::Shared eventDispatcher,
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ContextContainer::Shared const &contextContainer)
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: ConcreteComponentDescriptor(eventDispatcher),
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// TODO (39486757): implement image manager on Android, currently Android does
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// not have an ImageManager so this will crash
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#ifndef ANDROID
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imageManager_(
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contextContainer
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? contextContainer->getInstance<SharedImageManager>(
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"ImageManager")
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: nullptr) {
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}
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#else
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imageManager_(nullptr) {
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}
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#endif
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void adopt(UnsharedShadowNode shadowNode) const override {
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ConcreteComponentDescriptor::adopt(shadowNode);
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assert(std::dynamic_pointer_cast<ImageShadowNode>(shadowNode));
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auto imageShadowNode =
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std::static_pointer_cast<ImageShadowNode>(shadowNode);
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// `ImageShadowNode` uses `ImageManager` to initiate image loading and
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// communicate the loading state and results to mounting layer.
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imageShadowNode->setImageManager(imageManager_);
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}
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private:
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const SharedImageManager imageManager_;
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};
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} // namespace react
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} // namespace facebook
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