react-native-paper
Version:
Material design for React Native
120 lines (119 loc) • 3.98 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = void 0;
var React = _interopRequireWildcard(require("react"));
var _reactNative = require("react-native");
var _utils = require("./utils");
var _theming = require("../../core/theming");
var _AnimatedText = _interopRequireDefault(require("../Typography/AnimatedText"));
function _interopRequireDefault(e) { return e && e.__esModule ? e : { default: e }; }
function _interopRequireWildcard(e, t) { if ("function" == typeof WeakMap) var r = new WeakMap(), n = new WeakMap(); return (_interopRequireWildcard = function (e, t) { if (!t && e && e.__esModule) return e; var o, i, f = { __proto__: null, default: e }; if (null === e || "object" != typeof e && "function" != typeof e) return f; if (o = t ? n : r) { if (o.has(e)) return o.get(e); o.set(e, f); } for (const t in e) "default" !== t && {}.hasOwnProperty.call(e, t) && ((i = (o = Object.defineProperty) && Object.getOwnPropertyDescriptor(e, t)) && (i.get || i.set) ? o(f, t, i) : f[t] = e[t]); return f; })(e, t); }
function _extends() { return _extends = Object.assign ? Object.assign.bind() : function (n) { for (var e = 1; e < arguments.length; e++) { var t = arguments[e]; for (var r in t) ({}).hasOwnProperty.call(t, r) && (n[r] = t[r]); } return n; }, _extends.apply(null, arguments); }
/**
* Helper text is used in conjuction with input elements to provide additional hints for the user.
*
* ## Usage
* ```js
* import * as React from 'react';
* import { View } from 'react-native';
* import { HelperText, TextInput } from 'react-native-paper';
*
* const MyComponent = () => {
* const [text, setText] = React.useState('');
*
* const onChangeText = text => setText(text);
*
* const hasErrors = () => {
* return !text.includes('@');
* };
*
* return (
* <View>
* <TextInput label="Email" value={text} onChangeText={onChangeText} />
* <HelperText type="error" visible={hasErrors()}>
* Email address is invalid!
* </HelperText>
* </View>
* );
* };
*
* export default MyComponent;
* ```
*/
const HelperText = ({
style,
type = 'info',
visible = true,
theme: themeOverrides,
onLayout,
padding = 'normal',
disabled,
...rest
}) => {
const theme = (0, _theming.useInternalTheme)(themeOverrides);
const {
current: shown
} = React.useRef(new _reactNative.Animated.Value(visible ? 1 : 0));
let {
current: textHeight
} = React.useRef(0);
const {
scale
} = theme.animation;
const {
maxFontSizeMultiplier = 1.5
} = rest;
React.useEffect(() => {
if (visible) {
// show text
_reactNative.Animated.timing(shown, {
toValue: 1,
duration: 150 * scale,
useNativeDriver: true
}).start();
} else {
// hide text
_reactNative.Animated.timing(shown, {
toValue: 0,
duration: 180 * scale,
useNativeDriver: true
}).start();
}
}, [visible, scale, shown]);
const handleTextLayout = e => {
onLayout === null || onLayout === void 0 || onLayout(e);
textHeight = e.nativeEvent.layout.height;
};
const textColor = (0, _utils.getTextColor)({
theme,
disabled,
type
});
return /*#__PURE__*/React.createElement(_AnimatedText.default, _extends({
onLayout: handleTextLayout,
style: [styles.text, padding !== 'none' ? styles.padding : {}, {
color: textColor,
opacity: shown,
transform: visible && type === 'error' ? [{
translateY: shown.interpolate({
inputRange: [0, 1],
outputRange: [-textHeight / 2, 0]
})
}] : []
}, style],
maxFontSizeMultiplier: maxFontSizeMultiplier
}, rest), rest.children);
};
const styles = _reactNative.StyleSheet.create({
text: {
fontSize: 12,
paddingVertical: 4
},
padding: {
paddingHorizontal: 12
}
});
var _default = exports.default = HelperText;
//# sourceMappingURL=HelperText.js.map