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ActivityIndicator.js
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ActivityIndicator.js
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/**
* Copyright (c) 2015-present, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.
*
* @providesModule ActivityIndicator
* @flow
*/
'use strict';
const ColorPropType = require('ColorPropType');
const NativeMethodsMixin = require('NativeMethodsMixin');
const Platform = require('Platform');
const ProgressBarAndroid = require('ProgressBarAndroid');
const PropTypes = require('prop-types');
const React = require('React');
const StyleSheet = require('StyleSheet');
const View = require('View');
const ViewPropTypes = require('ViewPropTypes');
const createReactClass = require('create-react-class');
const requireNativeComponent = require('requireNativeComponent');
const GRAY = '#999999';
type IndicatorSize = number | 'small' | 'large';
type DefaultProps = {
animating: boolean,
color: any,
hidesWhenStopped: boolean,
size: IndicatorSize,
}
/**
* Displays a circular loading indicator.
*
* ### Example
*
* ```ReactNativeWebPlayer
* import React, { Component } from 'react'
* import {
* ActivityIndicator,
* AppRegistry,
* StyleSheet,
* Text,
* View,
* } from 'react-native'
*
* class App extends Component {
* render() {
* return (
* <View style={[styles.container, styles.horizontal]}>
* <ActivityIndicator size="large" color="#0000ff" />
* <ActivityIndicator size="small" color="#00ff00" />
* <ActivityIndicator size="large" color="#0000ff" />
* <ActivityIndicator size="small" color="#00ff00" />
* </View>
* )
* }
* }
*
* const styles = StyleSheet.create({
* container: {
* flex: 1,
* justifyContent: 'center'
* },
* horizontal: {
* flexDirection: 'row',
* justifyContent: 'space-around',
* padding: 10
* }
* })
*
* AppRegistry.registerComponent('App', () => App)
* ```
*/
/* $FlowFixMe(>=0.53.0 site=react_native_fb,react_native_oss) This comment
* suppresses an error when upgrading Flow's support for React. To see the
* error delete this comment and run Flow. */
const ActivityIndicator = createReactClass({
displayName: 'ActivityIndicator',
mixins: [NativeMethodsMixin],
propTypes: {
...ViewPropTypes,
/**
* Whether to show the indicator (true, the default) or hide it (false).
*/
animating: PropTypes.bool,
/**
* The foreground color of the spinner (default is gray).
*/
color: ColorPropType,
/**
* Size of the indicator (default is 'small').
* Passing a number to the size prop is only supported on Android.
*/
size: PropTypes.oneOfType([
PropTypes.oneOf([ 'small', 'large' ]),
PropTypes.number,
]),
/**
* Whether the indicator should hide when not animating (true by default).
*
* @platform ios
*/
hidesWhenStopped: PropTypes.bool,
},
getDefaultProps(): DefaultProps {
return {
animating: true,
color: Platform.OS === 'ios' ? GRAY : undefined,
hidesWhenStopped: true,
size: 'small',
};
},
render() {
const {onLayout, style, ...props} = this.props;
let sizeStyle;
switch (props.size) {
case 'small':
sizeStyle = styles.sizeSmall;
break;
case 'large':
sizeStyle = styles.sizeLarge;
break;
default:
sizeStyle = {height: props.size, width: props.size};
break;
}
const nativeProps = {
...props,
style: sizeStyle,
styleAttr: 'Normal',
indeterminate: true,
};
return (
<View onLayout={onLayout} style={[styles.container, style]}>
{Platform.OS === 'ios' ? (
<RCTActivityIndicator {...nativeProps} />
) : (
<ProgressBarAndroid {...nativeProps} />
)}
</View>
);
}
});
const styles = StyleSheet.create({
container: {
alignItems: 'center',
justifyContent: 'center',
},
sizeSmall: {
width: 20,
height: 20,
},
sizeLarge: {
width: 36,
height: 36,
},
});
if (Platform.OS === 'ios') {
var RCTActivityIndicator = requireNativeComponent(
'RCTActivityIndicatorView',
ActivityIndicator,
{ nativeOnly: { activityIndicatorViewStyle: true } }
);
}
module.exports = ActivityIndicator;