GT2/Ejectable/node_modules/react-native/ReactCommon/fabric/uimanager/UIManagerBinding.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 <folly/dynamic.h>
#include <jsi/jsi.h>
#include <react/uimanager/UIManager.h>
#include <react/uimanager/primitives.h>
namespace facebook {
namespace react {
/*
* Exposes UIManager to JavaScript realm.
*/
class UIManagerBinding : public jsi::HostObject {
public:
/*
* Installs UIManagerBinding into JavaScript runtime if needed.
* Creates and sets `UIManagerBinding` into the global namespace.
* In case if the global namespace already has a `UIManagerBinding` installed,
* returns that.
* Thread synchronization must be enforced externally.
*/
static std::shared_ptr<UIManagerBinding> createAndInstallIfNeeded(
jsi::Runtime &runtime);
~UIManagerBinding();
/*
* Establish a relationship between `UIManager` and `UIManagerBinding` by
* setting internal pointers to each other.
* Must be called on JavaScript thread or during VM destruction.
*/
void attach(std::shared_ptr<UIManager> const &uiManager);
/*
* Starts React Native Surface with given id, moduleName, and props.
* Thread synchronization must be enforced externally.
*/
void startSurface(
jsi::Runtime &runtime,
SurfaceId surfaceId,
const std::string &moduleName,
const folly::dynamic &initalProps) const;
/*
* Stops React Native Surface with given id.
* Thread synchronization must be enforced externally.
*/
void stopSurface(jsi::Runtime &runtime, SurfaceId surfaceId) const;
/*
* Delivers raw event data to JavaScript.
* Thread synchronization must be enforced externally.
*/
void dispatchEvent(
jsi::Runtime &runtime,
const EventTarget *eventTarget,
const std::string &type,
const ValueFactory &payloadFactory) const;
/*
* Invalidates the binding and underlying UIManager.
* Allows to save some resources and prevents UIManager's delegate to be
* called.
* Calling public methods of this class after calling this method is UB.
* Can be called on any thread.
*/
void invalidate() const;
/*
* `jsi::HostObject` specific overloads.
*/
jsi::Value get(jsi::Runtime &runtime, const jsi::PropNameID &name) override;
private:
std::shared_ptr<UIManager> uiManager_;
std::unique_ptr<const EventHandler> eventHandler_;
};
} // namespace react
} // namespace facebook