ssap_app/node_modules/@react-navigation/elements/lib/module/SafeAreaProviderCompat.js

117 lines
3.2 KiB
JavaScript

import * as React from 'react';
import { Dimensions, Platform, StyleSheet, View } from 'react-native';
import { initialWindowMetrics, SafeAreaFrameContext, SafeAreaInsetsContext, SafeAreaProvider } from 'react-native-safe-area-context';
const {
width = 0,
height = 0
} = Dimensions.get('window');
// To support SSR on web, we need to have empty insets for initial values
// Otherwise there can be mismatch between SSR and client output
// We also need to specify empty values to support tests environments
const initialMetrics = Platform.OS === 'web' || initialWindowMetrics == null ? {
frame: {
x: 0,
y: 0,
width,
height
},
insets: {
top: 0,
left: 0,
right: 0,
bottom: 0
}
} : initialWindowMetrics;
export default function SafeAreaProviderCompat(_ref) {
let {
children,
style
} = _ref;
const insets = React.useContext(SafeAreaInsetsContext);
if (insets) {
// If we already have insets, don't wrap the stack in another safe area provider
// This avoids an issue with updates at the cost of potentially incorrect values
// https://github.com/react-navigation/react-navigation/issues/174
return /*#__PURE__*/React.createElement(View, {
style: [styles.container, style]
}, children);
}
if (Platform.OS === 'web') {
children = /*#__PURE__*/React.createElement(SafeAreaFrameProvider, {
initialMetrics: initialMetrics
}, children);
}
return /*#__PURE__*/React.createElement(SafeAreaProvider, {
initialMetrics: initialMetrics,
style: style
}, children);
}
// FIXME: On the Web, the safe area frame value doesn't update on resize
// So we workaround this by measuring the frame on resize
const SafeAreaFrameProvider = _ref2 => {
let {
initialMetrics,
children
} = _ref2;
const element = React.useRef(null);
const [frame, setFrame] = React.useState(initialMetrics.frame);
React.useEffect(() => {
if (element.current == null) {
return;
}
const rect = element.current.getBoundingClientRect();
setFrame({
x: rect.x,
y: rect.y,
width: rect.width,
height: rect.height
});
let timeout;
const observer = new ResizeObserver(entries => {
const entry = entries[0];
if (entry) {
const {
x,
y,
width,
height
} = entry.contentRect;
// Debounce the frame updates to avoid too many updates in a short time
clearTimeout(timeout);
timeout = setTimeout(() => {
setFrame({
x,
y,
width,
height
});
}, 100);
}
});
observer.observe(element.current);
return () => {
observer.disconnect();
clearTimeout(timeout);
};
}, []);
return /*#__PURE__*/React.createElement(SafeAreaFrameContext.Provider, {
value: frame
}, /*#__PURE__*/React.createElement("div", {
ref: element,
style: {
...StyleSheet.absoluteFillObject,
pointerEvents: 'none',
visibility: 'hidden'
}
}), children);
};
SafeAreaProviderCompat.initialMetrics = initialMetrics;
const styles = StyleSheet.create({
container: {
flex: 1
}
});
//# sourceMappingURL=SafeAreaProviderCompat.js.map