mirror of
https://github.com/facebook/react-native.git
synced 2025-11-01 09:14:26 +00:00
Samuel Susla
2016460528
Summary: Changelog: [internal] This is a mechanism that will guess event's React priority based on other events ongoing on the platform. If an event happens within span of ContinuousStart -> ContinuousEnd and its category is unspecified, we deduce it's React priority to be default. All other events are discrete. Special case: `onScroll`, which is always treated as "Default". Reviewed By: JoshuaGross Differential Revision: D28485060 fbshipit-source-id: d2eae63dbcf03271dfed97128a1590dd165a3ce2
73 lines
1.6 KiB
C++
73 lines
1.6 KiB
C++
/*
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* Copyright (c) Facebook, Inc. and its 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 <memory>
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#include <string>
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#include <react/renderer/core/EventTarget.h>
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#include <react/renderer/core/ValueFactory.h>
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namespace facebook {
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namespace react {
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/*
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* Represents ready-to-dispatch event object.
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*/
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struct RawEvent {
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/*
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* Defines category of a native platform event. This is used to deduce types
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* of events for Concurrent Mode.
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*/
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enum class Category {
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/*
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* Start of a continuous event. To be used with touchStart.
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*/
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ContinuousStart,
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/*
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* End of a continuous event. To be used with touchEnd.
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*/
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ContinuousEnd,
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/*
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* Priority for this event will be determined from other events in the
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* queue. If it is triggered by continuous event, its priority will be
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* default. If it is not triggered by continuous event, its priority will be
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* discrete.
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*/
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Unspecified,
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/*
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* Forces discrete type for the event. Regardless if continuous event is
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* ongoing.
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*/
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Discrete,
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/*
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* Forces continuous type for the event. Regardless if continuous event
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* isn't ongoing.
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*/
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Continuous
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};
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RawEvent(
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std::string type,
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ValueFactory payloadFactory,
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SharedEventTarget eventTarget,
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Category category = Category::Unspecified);
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std::string type;
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ValueFactory payloadFactory;
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SharedEventTarget eventTarget;
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Category category;
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};
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} // namespace react
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} // namespace facebook
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