GT2/Ejectable/node_modules/react-native/ReactCommon/fabric/uimanager/ComponentDescriptorProvider...

72 lines
2.3 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 <better/mutex.h>
#include <react/core/ComponentDescriptor.h>
#include <react/uimanager/ComponentDescriptorProvider.h>
#include <react/uimanager/ComponentDescriptorRegistry.h>
namespace facebook {
namespace react {
using ComponentDescriptorProviderRequest =
std::function<void(ComponentName componentName)>;
/*
* Registry of `ComponentDescriptorProvider`s (and managed
* `ComponentDescriptorRegistry`s). The class maintains a list of
* `ComponentDescriptorRegistry`s (retaining pointers weakly) and update them
* accordingly to changes in the provider registry.
*/
class ComponentDescriptorProviderRegistry final {
public:
/*
* Adds a `ComponentDescriptorProvider`s and update the managed
* `ComponentDescriptorRegistry`s accordingly.
* The methods can be called on any thread.
*/
void add(ComponentDescriptorProvider provider) const;
/*
* ComponenDescriptorRegistry will call the `request` in case if a component
* with given name wasn't registered yet.
* The request handler must register a ComponentDescripor with requested name
* synchronously during handling the request.
* The request can be called on any thread.
* The methods can be called on any thread.
*/
void setComponentDescriptorProviderRequest(
ComponentDescriptorProviderRequest request) const;
/*
* Creates managed `ComponentDescriptorRegistry` based on a stored list of
* `ComponentDescriptorProvider`s and given `ComponentDescriptorParameters`.
* The methods can be called on any thread.
*/
ComponentDescriptorRegistry::Shared createComponentDescriptorRegistry(
ComponentDescriptorParameters const &parameters) const;
private:
friend class ComponentDescriptorRegistry;
void request(ComponentName componentName) const;
mutable better::shared_mutex mutex_;
mutable std::vector<std::weak_ptr<ComponentDescriptorRegistry const>>
componentDescriptorRegistries_;
mutable better::map<ComponentHandle, ComponentDescriptorProvider const>
componentDescriptorProviders_;
mutable ComponentDescriptorProviderRequest
componentDescriptorProviderRequest_;
};
} // namespace react
} // namespace facebook