94 lines
2.7 KiB
C
94 lines
2.7 KiB
C
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/*
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* Copyright (c) Meta Platforms, Inc. and affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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#pragma once
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#include <folly/dynamic.h>
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#include <jsi/jsi.h>
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#include <react/renderer/core/RawValue.h>
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#include <react/renderer/uimanager/PointerEventsProcessor.h>
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#include <react/renderer/uimanager/UIManager.h>
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#include <react/renderer/uimanager/primitives.h>
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namespace facebook::react {
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/*
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* Exposes UIManager to JavaScript realm.
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*/
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class UIManagerBinding : public jsi::HostObject {
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public:
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/*
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* Installs UIManagerBinding into JavaScript runtime if needed.
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* Creates and sets `UIManagerBinding` into the global namespace.
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* Thread synchronization must be enforced externally.
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*/
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static void createAndInstallIfNeeded(
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jsi::Runtime& runtime,
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const std::shared_ptr<UIManager>& uiManager);
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/*
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* Returns a pointer to UIManagerBinding previously installed into a runtime.
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* Thread synchronization must be enforced externally.
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*/
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static std::shared_ptr<UIManagerBinding> getBinding(jsi::Runtime& runtime);
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UIManagerBinding(std::shared_ptr<UIManager> uiManager);
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~UIManagerBinding() override;
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jsi::Value getInspectorDataForInstance(
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jsi::Runtime& runtime,
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const EventEmitter& eventEmitter) const;
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/*
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* Delivers raw event data to JavaScript.
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* Thread synchronization must be enforced externally.
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*/
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void dispatchEvent(
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jsi::Runtime& runtime,
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const EventTarget* eventTarget,
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const std::string& type,
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ReactEventPriority priority,
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const EventPayload& payload) const;
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/*
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* Invalidates the binding and underlying UIManager.
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* Allows to save some resources and prevents UIManager's delegate to be
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* called.
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* Calling public methods of this class after calling this method is UB.
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* Can be called on any thread.
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*/
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void invalidate() const;
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/*
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* `jsi::HostObject` specific overloads.
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*/
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jsi::Value get(jsi::Runtime& runtime, const jsi::PropNameID& name) override;
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UIManager& getUIManager();
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PointerEventsProcessor& getPointerEventsProcessor();
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private:
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/*
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* Internal method that sends the event to JS. Should only be called from
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* UIManagerBinding::dispatchEvent.
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*/
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void dispatchEventToJS(
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jsi::Runtime& runtime,
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const EventTarget* eventTarget,
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const std::string& type,
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ReactEventPriority priority,
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const EventPayload& payload) const;
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std::shared_ptr<UIManager> uiManager_;
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std::unique_ptr<jsi::Function> eventHandler_;
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mutable PointerEventsProcessor pointerEventsProcessor_;
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mutable ReactEventPriority currentEventPriority_;
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};
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} // namespace facebook::react
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