mirror of
https://github.com/facebook/react-native.git
synced 2025-11-01 09:14:26 +00:00
Valentin Shergin
6a10feacda
Summary: Storing a strong shared pointer to `ComponentDescriptor` can cause a memory leak. Therefore we enforce all call sides and params to be weak pointers. The only Scheduler preserves a retaining pointer to it (to prevent preliminary deallocation). Reviewed By: sammy-SC Differential Revision: D17115540 fbshipit-source-id: fdea7d19f742ff04d5ba5470dd9748a5b226aa7c
48 lines
1.4 KiB
C++
48 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/components/image/ImageShadowNode.h>
|
|
#include <react/core/ConcreteComponentDescriptor.h>
|
|
#include <react/imagemanager/ImageManager.h>
|
|
#include <react/utils/ContextContainer.h>
|
|
|
|
namespace facebook {
|
|
namespace react {
|
|
|
|
/*
|
|
* Descriptor for <Image> component.
|
|
*/
|
|
class ImageComponentDescriptor final
|
|
: public ConcreteComponentDescriptor<ImageShadowNode> {
|
|
public:
|
|
ImageComponentDescriptor(
|
|
EventDispatcher::Weak eventDispatcher,
|
|
ContextContainer::Shared const &contextContainer)
|
|
: ConcreteComponentDescriptor(eventDispatcher),
|
|
imageManager_(std::make_shared<ImageManager>(contextContainer)){};
|
|
|
|
void adopt(UnsharedShadowNode shadowNode) const override {
|
|
ConcreteComponentDescriptor::adopt(shadowNode);
|
|
|
|
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
|