GT2/Ejectable/node_modules/react-native/ReactCommon/fabric/uimanager/ComponentDescriptorRegistry.h

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2021-08-16 00:14:59 +00:00
/*
* 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 <memory>
#include <better/map.h>
#include <better/mutex.h>
#include <react/core/ComponentDescriptor.h>
#include <react/uimanager/ComponentDescriptorProvider.h>
namespace facebook {
namespace react {
class ComponentDescriptorProviderRegistry;
class ComponentDescriptorRegistry;
using SharedComponentDescriptorRegistry =
std::shared_ptr<const ComponentDescriptorRegistry>;
/*
* Registry of particular `ComponentDescriptor`s.
*/
class ComponentDescriptorRegistry {
public:
using Shared = std::shared_ptr<const ComponentDescriptorRegistry>;
/*
* Creates an object with stored `ComponentDescriptorParameters` which will
* be used later to create `ComponentDescriptor`s.
*/
ComponentDescriptorRegistry(
ComponentDescriptorParameters const &parameters,
ComponentDescriptorProviderRegistry const &providerRegistry);
/*
* This is broken. Please do not use.
* If you requesting a ComponentDescriptor and unsure that it's there, you are
* doing something wrong.
*/
ComponentDescriptor const *
findComponentDescriptorByHandle_DO_NOT_USE_THIS_IS_BROKEN(
ComponentHandle componentHandle) const;
ComponentDescriptor const &at(std::string const &componentName) const;
ComponentDescriptor const &at(ComponentHandle componentHandle) const;
ShadowNode::Shared createNode(
Tag tag,
std::string const &viewName,
SurfaceId surfaceId,
folly::dynamic const &props,
SharedEventTarget const &eventTarget) const;
void setFallbackComponentDescriptor(SharedComponentDescriptor descriptor);
ComponentDescriptor::Shared getFallbackComponentDescriptor() const;
private:
friend class ComponentDescriptorProviderRegistry;
void registerComponentDescriptor(
SharedComponentDescriptor componentDescriptor) const;
/*
* Creates a `ComponentDescriptor` using specified
* `ComponentDescriptorProvider` and stored `ComponentDescriptorParameters`,
* and then adds that to the registry.
* To be used by `ComponentDescriptorProviderRegistry` only.
* Thread safe.
*/
void add(ComponentDescriptorProvider componentDescriptorProvider) const;
mutable better::shared_mutex mutex_;
mutable better::map<ComponentHandle, SharedComponentDescriptor>
_registryByHandle;
mutable better::map<std::string, SharedComponentDescriptor> _registryByName;
ComponentDescriptor::Shared _fallbackComponentDescriptor;
ComponentDescriptorParameters parameters_{};
ComponentDescriptorProviderRegistry const &providerRegistry_;
};
} // namespace react
} // namespace facebook