mirror of
https://github.com/facebook/react-native.git
synced 2025-11-01 09:14:26 +00:00
Nicola Corti
e51e19ecc1
Summary: Minimal set of changes to intercept events in external modules. Current intended use-case is for Reanimated to handle events for the Animated properties. Changelog: [Added] Add listeners to allow intercepting events in C++ core. Reviewed By: cipolleschi Differential Revision: D35312534 fbshipit-source-id: ec924b57fd0c0dabf7be7b886dbef23bf3170d6c
88 lines
2.8 KiB
C++
88 lines
2.8 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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#include "EventDispatcher.h"
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#include <react/renderer/core/StateUpdate.h>
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#include "BatchedEventQueue.h"
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#include "RawEvent.h"
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#include "UnbatchedEventQueue.h"
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namespace facebook {
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namespace react {
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EventDispatcher::EventDispatcher(
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EventQueueProcessor const &eventProcessor,
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EventBeat::Factory const &synchonousEventBeatFactory,
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EventBeat::Factory const &asynchonousEventBeatFactory,
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EventBeat::SharedOwnerBox const &ownerBox)
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: synchronousUnbatchedQueue_(std::make_unique<UnbatchedEventQueue>(
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eventProcessor,
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synchonousEventBeatFactory(ownerBox))),
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synchronousBatchedQueue_(std::make_unique<BatchedEventQueue>(
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eventProcessor,
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synchonousEventBeatFactory(ownerBox))),
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asynchronousUnbatchedQueue_(std::make_unique<UnbatchedEventQueue>(
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eventProcessor,
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asynchonousEventBeatFactory(ownerBox))),
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asynchronousBatchedQueue_(std::make_unique<BatchedEventQueue>(
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eventProcessor,
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asynchonousEventBeatFactory(ownerBox))) {}
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void EventDispatcher::dispatchEvent(RawEvent &&rawEvent, EventPriority priority)
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const {
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// Allows the event listener to interrupt default event dispatch
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if (eventListeners_.willDispatchEvent(rawEvent)) {
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return;
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}
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getEventQueue(priority).enqueueEvent(std::move(rawEvent));
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}
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void EventDispatcher::dispatchStateUpdate(
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StateUpdate &&stateUpdate,
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EventPriority priority) const {
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getEventQueue(priority).enqueueStateUpdate(std::move(stateUpdate));
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}
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void EventDispatcher::dispatchUniqueEvent(RawEvent &&rawEvent) const {
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// Allows the event listener to interrupt default event dispatch
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if (eventListeners_.willDispatchEvent(rawEvent)) {
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return;
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}
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asynchronousBatchedQueue_->enqueueUniqueEvent(std::move(rawEvent));
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}
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const EventQueue &EventDispatcher::getEventQueue(EventPriority priority) const {
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switch (priority) {
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case EventPriority::SynchronousUnbatched:
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return *synchronousUnbatchedQueue_;
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case EventPriority::SynchronousBatched:
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return *synchronousBatchedQueue_;
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case EventPriority::AsynchronousUnbatched:
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return *asynchronousUnbatchedQueue_;
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case EventPriority::AsynchronousBatched:
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return *asynchronousBatchedQueue_;
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}
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}
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void EventDispatcher::addListener(
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const std::shared_ptr<EventListener const> &listener) const {
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eventListeners_.addListener(listener);
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}
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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 EventDispatcher::removeListener(
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const std::shared_ptr<EventListener const> &listener) const {
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eventListeners_.removeListener(listener);
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}
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} // namespace react
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} // namespace facebook
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