expo
Version:
95 lines • 3.58 kB
JavaScript
import React, { useEffect, useState, useRef } from 'react';
import { Animated, StyleSheet, SafeAreaView, Text, NativeModules, NativeEventEmitter, View, } from 'react-native';
const NativeDevLoadingView = NativeModules.DevLoadingView;
const nativeDevLoadingViewEventEmitter = new NativeEventEmitter(NativeDevLoadingView);
export default function DevLoadingView() {
let [isDevLoading, setIsDevLoading] = useState(false);
let [isAnimating, setIsAnimating] = useState(false);
let translateY = useRef(new Animated.Value(0)).current;
useEffect(() => {
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);
}
});
}
nativeDevLoadingViewEventEmitter.addListener('devLoadingView:showMessage', handleShowMessage);
nativeDevLoadingViewEventEmitter.addListener('devLoadingView:hide', handleHide);
return function cleanup() {
nativeDevLoadingViewEventEmitter.removeListener('devLoadingView:showMessage', handleShowMessage);
nativeDevLoadingViewEventEmitter.removeListener('devLoadingView:hide', handleHide);
};
}, []);
if (isDevLoading || isAnimating) {
return (<Animated.View style={[styles.animatedContainer, { transform: [{ translateY }] }]} pointerEvents="none">
<SafeAreaView style={styles.banner}>
<View style={styles.contentContainer}>
<View style={{ flexDirection: 'row' }}>
<Text style={styles.text}>{isDevLoading ? 'Refreshing...' : 'Refreshed'}</Text>
</View>
<View style={{ flex: 1 }}>
<Text style={styles.subtitle}>
{isDevLoading ? 'Using Fast Refresh' : "Don't see your changes? Reload the app"}
</Text>
</View>
</View>
</SafeAreaView>
</Animated.View>);
}
else {
return null;
}
}
const styles = StyleSheet.create({
animatedContainer: {
position: 'absolute',
bottom: 0,
left: 0,
right: 0,
zIndex: 42,
},
banner: {
flex: 1,
overflow: 'visible',
backgroundColor: 'rgba(0,0,0,0.75)',
},
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)',
},
});
//# sourceMappingURL=DevLoadingView.ios.js.map