140 lines
3.1 KiB
JavaScript
140 lines
3.1 KiB
JavaScript
/**
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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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* @flow
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* @format
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*/
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'use strict';
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const UIManager = require('UIManager');
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type Type =
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| 'spring'
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| 'linear'
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| 'easeInEaseOut'
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| 'easeIn'
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| 'easeOut'
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| 'keyboard';
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type Property = 'opacity' | 'scaleX' | 'scaleY' | 'scaleXY';
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type AnimationConfig = $ReadOnly<{|
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duration?: number,
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delay?: number,
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springDamping?: number,
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initialVelocity?: number,
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type?: Type,
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property?: Property,
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|}>;
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type LayoutAnimationConfig = $ReadOnly<{|
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duration: number,
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create?: AnimationConfig,
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update?: AnimationConfig,
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delete?: AnimationConfig,
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|}>;
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function configureNext(
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config: LayoutAnimationConfig,
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onAnimationDidEnd?: Function,
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) {
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UIManager.configureNextLayoutAnimation(
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config,
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onAnimationDidEnd ?? function() {},
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function() {
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/* unused */
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},
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);
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}
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function create(
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duration: number,
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type: Type,
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property: Property,
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): LayoutAnimationConfig {
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return {
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duration,
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create: {type, property},
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update: {type},
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delete: {type, property},
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};
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}
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const Presets = {
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easeInEaseOut: create(300, 'easeInEaseOut', 'opacity'),
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linear: create(500, 'linear', 'opacity'),
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spring: {
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duration: 700,
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create: {
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type: 'linear',
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property: 'opacity',
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},
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update: {
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type: 'spring',
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springDamping: 0.4,
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},
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delete: {
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type: 'linear',
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property: 'opacity',
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},
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},
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};
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/**
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* Automatically animates views to their new positions when the
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* next layout happens.
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*
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* A common way to use this API is to call it before calling `setState`.
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*
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* Note that in order to get this to work on **Android** you need to set the following flags via `UIManager`:
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*
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* UIManager.setLayoutAnimationEnabledExperimental && UIManager.setLayoutAnimationEnabledExperimental(true);
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*/
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const LayoutAnimation = {
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/**
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* Schedules an animation to happen on the next layout.
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*
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* @param config Specifies animation properties:
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*
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* - `duration` in milliseconds
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* - `create`, `AnimationConfig` for animating in new views
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* - `update`, `AnimationConfig` for animating views that have been updated
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*
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* @param onAnimationDidEnd Called when the animation finished.
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* Only supported on iOS.
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* @param onError Called on error. Only supported on iOS.
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*/
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configureNext,
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/**
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* Helper for creating a config for `configureNext`.
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*/
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create,
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Types: Object.freeze({
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spring: 'spring',
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linear: 'linear',
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easeInEaseOut: 'easeInEaseOut',
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easeIn: 'easeIn',
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easeOut: 'easeOut',
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keyboard: 'keyboard',
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}),
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Properties: Object.freeze({
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opacity: 'opacity',
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scaleX: 'scaleX',
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scaleY: 'scaleY',
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scaleXY: 'scaleXY',
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}),
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checkConfig(...args: Array<mixed>) {
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console.error('LayoutAnimation.checkConfig(...) has been disabled.');
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},
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Presets,
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easeInEaseOut: configureNext.bind(null, Presets.easeInEaseOut),
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linear: configureNext.bind(null, Presets.linear),
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spring: configureNext.bind(null, Presets.spring),
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};
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module.exports = LayoutAnimation;
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