react-native-paper
Version:
Material design for React Native
229 lines (228 loc) • 6.68 kB
JavaScript
function _extends() { _extends = Object.assign ? Object.assign.bind() : function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; }; return _extends.apply(this, arguments); }
import * as React from 'react';
import { Animated, StyleSheet, View } from 'react-native';
import useLatestCallback from 'use-latest-callback';
import Button from './Button/Button';
import Icon from './Icon';
import Surface from './Surface';
import Text from './Typography/Text';
import { useInternalTheme } from '../core/theming';
const DEFAULT_MAX_WIDTH = 960;
/**
* Banner displays a prominent message and related actions.
*
* ## Usage
* ```js
* import * as React from 'react';
* import { Image } from 'react-native';
* import { Banner } from 'react-native-paper';
*
* const MyComponent = () => {
* const [visible, setVisible] = React.useState(true);
*
* return (
* <Banner
* visible={visible}
* actions={[
* {
* label: 'Fix it',
* onPress: () => setVisible(false),
* },
* {
* label: 'Learn more',
* onPress: () => setVisible(false),
* },
* ]}
* icon={({size}) => (
* <Image
* source={{
* uri: 'https://avatars3.githubusercontent.com/u/17571969?s=400&v=4',
* }}
* style={{
* width: size,
* height: size,
* }}
* />
* )}>
* There was a problem processing a transaction on your credit card.
* </Banner>
* );
* };
*
* export default MyComponent;
* ```
*/
const Banner = _ref => {
let {
visible,
icon,
children,
actions = [],
contentStyle,
elevation = 1,
style,
theme: themeOverrides,
onShowAnimationFinished = () => {},
onHideAnimationFinished = () => {},
maxFontSizeMultiplier,
...rest
} = _ref;
const theme = useInternalTheme(themeOverrides);
const {
current: position
} = React.useRef(new Animated.Value(visible ? 1 : 0));
const [layout, setLayout] = React.useState({
height: 0,
measured: false
});
const showCallback = useLatestCallback(onShowAnimationFinished);
const hideCallback = useLatestCallback(onHideAnimationFinished);
const {
scale
} = theme.animation;
const opacity = position.interpolate({
inputRange: [0, 0.1, 1],
outputRange: [0, 1, 1]
});
React.useEffect(() => {
if (visible) {
// show
Animated.timing(position, {
duration: 250 * scale,
toValue: 1,
useNativeDriver: false
}).start(showCallback);
} else {
// hide
Animated.timing(position, {
duration: 200 * scale,
toValue: 0,
useNativeDriver: false
}).start(hideCallback);
}
// eslint-disable-next-line react-hooks/exhaustive-deps
}, [visible, position, scale]);
const handleLayout = _ref2 => {
let {
nativeEvent
} = _ref2;
const {
height
} = nativeEvent.layout;
setLayout({
height,
measured: true
});
};
// The banner animation has 2 parts:
// 1. Blank spacer element which animates its height to move the content
// 2. Actual banner which animates its translateY
// In initial render, we position everything normally and measure the height of the banner
// Once we have the height, we apply the height to the spacer and switch the banner to position: absolute
// We need this because we need to move the content below as if banner's height was being animated
// However we can't animated banner's height directly as it'll also resize the content inside
const height = Animated.multiply(position, layout.height);
const translateY = Animated.multiply(Animated.add(position, -1), layout.height);
return /*#__PURE__*/React.createElement(Surface, _extends({}, rest, {
style: [!theme.isV3 && styles.elevation, {
opacity
}, style],
theme: theme
}, theme.isV3 && {
elevation
}), /*#__PURE__*/React.createElement(View, {
style: [styles.wrapper, contentStyle]
}, /*#__PURE__*/React.createElement(Animated.View, {
style: {
height
}
}), /*#__PURE__*/React.createElement(Animated.View, {
onLayout: handleLayout,
style: [layout.measured || !visible ?
// If we have measured banner's height or it's invisible,
// Position it absolutely, the layout will be taken care of the spacer
[styles.absolute, {
transform: [{
translateY
}]
}] :
// Otherwise position it normally
null, !layout.measured && !visible ?
// If we haven't measured banner's height yet and it's invisible,
// hide it with opacity: 0 so user doesn't see it
styles.transparent : null]
}, /*#__PURE__*/React.createElement(View, {
style: styles.content
}, icon ? /*#__PURE__*/React.createElement(View, {
style: styles.icon
}, /*#__PURE__*/React.createElement(Icon, {
source: icon,
size: 40
})) : null, /*#__PURE__*/React.createElement(Text, {
style: [styles.message, {
color: theme.isV3 ? theme.colors.onSurface : theme.colors.text
}],
accessibilityLiveRegion: visible ? 'polite' : 'none',
accessibilityRole: "alert",
maxFontSizeMultiplier: maxFontSizeMultiplier
}, children)), /*#__PURE__*/React.createElement(View, {
style: styles.actions
}, actions.map((_ref3, i) => {
var _theme$colors;
let {
label,
...others
} = _ref3;
return /*#__PURE__*/React.createElement(Button, _extends({
key: /* eslint-disable-line react/no-array-index-key */i,
compact: true,
mode: "text",
style: styles.button,
textColor: (_theme$colors = theme.colors) === null || _theme$colors === void 0 ? void 0 : _theme$colors.primary,
theme: theme
}, others), label);
})))));
};
const styles = StyleSheet.create({
wrapper: {
overflow: 'hidden',
alignSelf: 'center',
width: '100%',
maxWidth: DEFAULT_MAX_WIDTH
},
absolute: {
position: 'absolute',
top: 0,
width: '100%'
},
content: {
flexDirection: 'row',
justifyContent: 'flex-start',
marginHorizontal: 8,
marginTop: 16,
marginBottom: 0
},
icon: {
margin: 8
},
message: {
flex: 1,
margin: 8
},
actions: {
flexDirection: 'row',
justifyContent: 'flex-end',
margin: 4
},
button: {
margin: 4
},
elevation: {
elevation: 1
},
transparent: {
opacity: 0
}
});
export default Banner;
//# sourceMappingURL=Banner.js.map