Files
react-native/ReactCommon/fabric/uimanager/LayoutAnimationStatusDelegate.h
T
Joshua Gross eb9b2cedb8 LayoutAnimations: implement LayoutAnimationStatusDelegate for platform-specific integrations
Summary:
The LayoutAnimationStatusDelegate exists so that platforms can get a signal when animations are starting or have all completed.

This signal is meant to be used ONLY for driving animations at 60fps, or stopping that process, on the platform side.

Changelog: [Internal]

Reviewed By: mdvacca

Differential Revision: D21675807

fbshipit-source-id: e89ba524ea43c266556199c8854e8228869755e3
2020-05-20 19:45:49 -07:00

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/*
* 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
namespace facebook {
namespace react {
class LayoutAnimationStatusDelegate {
public:
/**
* Called when the LayoutAnimation engine state changes from animation nothing
* to animating something. This will only be called when you go from 0 to N>0
* active animations, N to N+1 animations will not result in this being
* called.
*/
virtual void onAnimationStarted() = 0;
/**
* Called when the LayoutAnimation engine completes all pending animations.
*/
virtual void onAllAnimationsComplete() = 0;
};
} // namespace react
} // namespace facebook