Files
react-native/ReactCommon/react/renderer/components/image/ImageComponentDescriptor.h
T
Samuel Susla 7ee2a998f0 Avoid copy of shared_ptr in ConcreteComponentDescriptor::adopt
Summary: Changelog: [internal]

Differential Revision: D27406634

fbshipit-source-id: f01422ebbcfd89337b98c4e6144aed7a2b9914b8
2021-04-05 11:48:56 -07:00

47 lines
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/debug/react_native_assert.h>
#include <react/renderer/components/image/ImageShadowNode.h>
#include <react/renderer/core/ConcreteComponentDescriptor.h>
#include <react/renderer/imagemanager/ImageManager.h>
#include <react/utils/ContextContainer.h>
namespace facebook {
namespace react {
/*
* Descriptor for <Image> component.
*/
class ImageComponentDescriptor final
: public ConcreteComponentDescriptor<ImageShadowNode> {
public:
ImageComponentDescriptor(ComponentDescriptorParameters const &parameters)
: ConcreteComponentDescriptor(parameters),
imageManager_(std::make_shared<ImageManager>(contextContainer_)){};
void adopt(ShadowNode::Unshared const &shadowNode) const override {
ConcreteComponentDescriptor::adopt(shadowNode);
react_native_assert(std::dynamic_pointer_cast<ImageShadowNode>(shadowNode));
auto imageShadowNode =
std::static_pointer_cast<ImageShadowNode>(shadowNode);
// `ImageShadowNode` uses `ImageManager` to initiate image loading and
// communicate the loading state and results to mounting layer.
imageShadowNode->setImageManager(imageManager_);
}
private:
const SharedImageManager imageManager_;
};
} // namespace react
} // namespace facebook