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Текущая директория: /usr/lib/node_modules/bitgo/node_modules/expo/build/environment
Просмотр файла: DevLoadingView.js
import React, { useEffect, useState, useRef, useMemo } from 'react';
import { Animated, StyleSheet, Text, NativeModules, NativeEventEmitter, UIManager, View, } from 'react-native';
export default function DevLoadingView() {
const [isDevLoading, setIsDevLoading] = useState(false);
const [isAnimating, setIsAnimating] = useState(false);
const translateY = useRef(new Animated.Value(0)).current;
const emitter = useMemo(() => {
try {
return new NativeEventEmitter(NativeModules.DevLoadingView);
}
catch (error) {
throw new Error('Failed to instantiate native emitter in `DevLoadingView` because the native module `DevLoadingView` is undefined: ' +
error.message);
}
}, []);
useEffect(() => {
if (!emitter)
return;
function handleShowMessage({ message }) {
// "Refreshing..." is the standard fast refresh message and it's the
// only time we want to display this overlay.
if (message !== 'Refreshing...') {
return;
}
// TODO: if we show the refreshing banner and don't get a hide message
// for 3 seconds, warn the user that it's taking a while and suggest
// they reload
translateY.setValue(0);
setIsDevLoading(true);
}
function handleHide() {
// TODO: if we showed the 'refreshing' banner less than 250ms ago, delay
// switching to the 'finished' banner
setIsAnimating(true);
setIsDevLoading(false);
Animated.timing(translateY, {
toValue: 150,
delay: 1000,
duration: 350,
useNativeDriver: true,
}).start(({ finished }) => {
if (finished) {
setIsAnimating(false);
translateY.setValue(0);
}
});
}
emitter.addListener('devLoadingView:showMessage', handleShowMessage);
emitter.addListener('devLoadingView:hide', handleHide);
return function cleanup() {
emitter.removeListener('devLoadingView:showMessage', handleShowMessage);
emitter.removeListener('devLoadingView:hide', handleHide);
};
}, [translateY, emitter]);
if (isDevLoading || isAnimating) {
return (React.createElement(Animated.View, { style: [styles.animatedContainer, { transform: [{ translateY }] }], pointerEvents: "none" },
React.createElement(View, { style: styles.banner },
React.createElement(View, { style: styles.contentContainer },
React.createElement(View, { style: { flexDirection: 'row' } },
React.createElement(Text, { style: styles.text }, isDevLoading ? 'Refreshing...' : 'Refreshed')),
React.createElement(View, { style: { flex: 1 } },
React.createElement(Text, { style: styles.subtitle }, isDevLoading ? 'Using Fast Refresh' : "Don't see your changes? Reload the app"))))));
}
else {
return null;
}
}
/**
* This is a hack to get the safe area insets without explicitly depending on react-native-safe-area-context.
* The following code is lifted from: https://git.io/Jzk4k
*
* TODO: This will need to be updated for Fabric/TurboModules.
**/
const RNCSafeAreaProviderConfig = UIManager.getViewManagerConfig('RNCSafeAreaProvider');
const initialWindowMetrics = RNCSafeAreaProviderConfig?.Constants?.initialWindowMetrics;
const styles = StyleSheet.create({
animatedContainer: {
position: 'absolute',
bottom: 0,
left: 0,
right: 0,
zIndex: 42, // arbitrary
},
banner: {
flex: 1,
overflow: 'visible',
backgroundColor: 'rgba(0,0,0,0.75)',
paddingBottom: initialWindowMetrics?.insets?.bottom ?? 0,
},
contentContainer: {
flex: 1,
paddingTop: 10,
paddingBottom: 5,
alignItems: 'center',
justifyContent: 'center',
textAlign: 'center',
},
text: {
color: '#fff',
fontSize: 15,
},
subtitle: {
color: 'rgba(255,255,255,0.8)',
},
});
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