@material-ui/core
Version:
React components that implement Google's Material Design.
242 lines (208 loc) • 6.44 kB
JavaScript
import _extends from "@babel/runtime/helpers/extends";
import _objectWithoutPropertiesLoose from "@babel/runtime/helpers/objectWithoutPropertiesLoose";
import React from 'react';
import PropTypes from 'prop-types';
import classnames from 'classnames';
import debounce from 'debounce'; // < 1kb payload overhead when lodash/debounce is > 3kb.
import EventListener from 'react-event-listener';
import withStyles from '../styles/withStyles';
import { setRef } from '../utils/reactHelpers';
const ROWS_HEIGHT = 19;
export const styles = {
/* Styles applied to the root element. */
root: {
position: 'relative',
// because the shadow has position: 'absolute',
width: '100%'
},
textarea: {
width: '100%',
height: '100%',
resize: 'none',
font: 'inherit',
padding: 0,
cursor: 'inherit',
boxSizing: 'border-box',
lineHeight: 'inherit',
border: 'none',
outline: 'none',
background: 'transparent'
},
shadow: {
// Overflow also needed to here to remove the extra row
// added to textareas in Firefox.
overflow: 'hidden',
// Visibility needed to hide the extra text area on ipads
visibility: 'hidden',
position: 'absolute',
height: 'auto',
whiteSpace: 'pre-wrap'
}
};
/**
* @ignore - internal component.
*/
class Textarea extends React.Component {
constructor(props) {
super();
this.handleRefInput = ref => {
this.inputRef = ref;
setRef(this.props.textareaRef, ref);
};
this.handleRefSinglelineShadow = ref => {
this.singlelineShadowRef = ref;
};
this.handleRefShadow = ref => {
this.shadowRef = ref;
};
this.handleChange = event => {
this.value = event.target.value;
if (!this.isControlled) {
// The component is not controlled, we need to update the shallow value.
this.shadowRef.value = this.value;
this.syncHeightWithShadow();
}
if (this.props.onChange) {
this.props.onChange(event);
}
};
this.isControlled = props.value != null; // <Input> expects the components it renders to respond to 'value'
// so that it can check whether they are filled.
this.value = props.value || props.defaultValue || '';
this.state = {
height: Number(props.rows) * ROWS_HEIGHT
};
if (typeof window !== 'undefined') {
this.handleResize = debounce(() => {
this.syncHeightWithShadow();
}, 166); // Corresponds to 10 frames at 60 Hz.
}
}
componentDidMount() {
this.syncHeightWithShadow();
}
componentDidUpdate() {
this.syncHeightWithShadow();
}
componentWillUnmount() {
this.handleResize.clear();
}
syncHeightWithShadow() {
const props = this.props; // Guarding for **broken** shallow rendering method that call componentDidMount
// but doesn't handle refs correctly.
// To remove once the shallow rendering has been fixed.
if (!this.shadowRef) {
return;
}
if (this.isControlled) {
// The component is controlled, we need to update the shallow value.
this.shadowRef.value = props.value == null ? '' : String(props.value);
}
const lineHeight = this.singlelineShadowRef.scrollHeight;
let newHeight = this.shadowRef.scrollHeight; // Guarding for jsdom, where scrollHeight isn't present.
// See https://github.com/tmpvar/jsdom/issues/1013
if (newHeight === undefined) {
return;
}
if (Number(props.rowsMax) >= Number(props.rows)) {
newHeight = Math.min(Number(props.rowsMax) * lineHeight, newHeight);
}
newHeight = Math.max(newHeight, lineHeight); // Need a large enough different to update the height.
// This prevents infinite rendering loop.
if (Math.abs(this.state.height - newHeight) > 1) {
this.setState({
height: newHeight
});
}
}
render() {
const _this$props = this.props,
{
classes,
className,
defaultValue,
rows,
value,
style
} = _this$props,
other = _objectWithoutPropertiesLoose(_this$props, ["classes", "className", "defaultValue", "onChange", "rows", "rowsMax", "textareaRef", "value", "style"]);
return React.createElement("div", {
className: classes.root
}, React.createElement(EventListener, {
target: "window",
onResize: this.handleResize
}), React.createElement("textarea", {
"aria-hidden": "true",
className: classnames(classes.textarea, classes.shadow),
readOnly: true,
ref: this.handleRefSinglelineShadow,
rows: "1",
tabIndex: -1,
value: ""
}), React.createElement("textarea", {
"aria-hidden": "true",
className: classnames(classes.textarea, classes.shadow),
defaultValue: defaultValue,
readOnly: true,
ref: this.handleRefShadow,
rows: rows,
tabIndex: -1,
value: value
}), React.createElement("textarea", _extends({
rows: rows,
className: classnames(classes.textarea, className),
defaultValue: defaultValue,
value: value,
onChange: this.handleChange,
ref: this.handleRefInput,
style: _extends({
height: this.state.height
}, style)
}, other)));
}
}
process.env.NODE_ENV !== "production" ? Textarea.propTypes = {
/**
* Override or extend the styles applied to the component.
* See [CSS API](#css-api) below for more details.
*/
classes: PropTypes.object.isRequired,
/**
* @ignore
*/
className: PropTypes.string,
/**
* @ignore
*/
defaultValue: PropTypes.oneOfType([PropTypes.string, PropTypes.number]),
/**
* @ignore
*/
disabled: PropTypes.bool,
/**
* @ignore
*/
onChange: PropTypes.func,
/**
* Number of rows to display when multiline option is set to true.
*/
rows: PropTypes.oneOfType([PropTypes.string, PropTypes.number]),
/**
* Maximum number of rows to display when multiline option is set to true.
*/
rowsMax: PropTypes.oneOfType([PropTypes.string, PropTypes.number]),
/**
* Use that property to pass a ref callback to the native textarea element.
*/
textareaRef: PropTypes.oneOfType([PropTypes.func, PropTypes.object]),
/**
* @ignore
*/
value: PropTypes.oneOfType([PropTypes.string, PropTypes.number])
} : void 0;
Textarea.defaultProps = {
rows: 1
};
export default withStyles(styles, {
name: 'MuiPrivateTextarea'
})(Textarea);