82 lines
2.2 KiB
C++
82 lines
2.2 KiB
C++
/*
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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 <react/renderer/core/EventBeat.h>
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#include <react/renderer/core/EventListener.h>
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#include <react/renderer/core/EventLogger.h>
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#include <react/renderer/core/EventQueue.h>
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#include <react/renderer/core/EventQueueProcessor.h>
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#include <react/renderer/core/StatePipe.h>
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#include <react/renderer/core/StateUpdate.h>
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#include <memory>
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namespace facebook::react {
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struct RawEvent;
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class RuntimeScheduler;
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/*
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* Represents event-delivery infrastructure.
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* Particular `EventEmitter` clases use this for sending events.
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*/
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class EventDispatcher {
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public:
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using Shared = std::shared_ptr<const EventDispatcher>;
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using Weak = std::weak_ptr<const EventDispatcher>;
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EventDispatcher(
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const EventQueueProcessor& eventProcessor,
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std::unique_ptr<EventBeat> eventBeat,
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StatePipe statePipe,
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std::weak_ptr<EventLogger> eventLogger);
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/*
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* Dispatches a raw event with given priority using event-delivery pipe.
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*/
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void dispatchEvent(RawEvent&& rawEvent) const;
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/*
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* Experimental API exposed to support EventEmitter::experimental_flushSync.
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*/
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void experimental_flushSync() const;
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/*
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* Dispatches a raw event with asynchronous batched priority. Before the
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* dispatch we make sure that no other RawEvent of same type and same target
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* is on the queue.
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*/
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void dispatchUniqueEvent(RawEvent&& rawEvent) const;
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/*
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* Dispatches a state update with given priority.
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*/
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void dispatchStateUpdate(StateUpdate&& stateUpdate) const;
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#pragma mark - Event listeners
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/*
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* Adds provided event listener to the event dispatcher.
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*/
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void addListener(std::shared_ptr<const EventListener> listener) const;
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/*
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* Removes provided event listener to the event dispatcher.
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*/
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void removeListener(
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const std::shared_ptr<const EventListener>& listener) const;
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private:
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EventQueue eventQueue_;
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const StatePipe statePipe_;
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mutable EventListenerContainer eventListeners_;
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const std::weak_ptr<EventLogger> eventLogger_;
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};
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} // namespace facebook::react
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