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| import React, {PropTypes} from 'react';
import cx from 'classnames';
import omit from 'boundless-utils-omit-keys';
import uuid from 'boundless-utils-uuid';
const isFunction = (x) => typeof x === 'function';
const noop = () => {};
/**
__An accessible checkbox with indeterminate support.__
Checkbox is implemented as a "controlled input", meaning it is a direct representation of the model data passed
inside. User interaction will bubble changes in the form of `onChecked` and `onUnchecked` that a controller
view must intercept and apply against the data provider.
*/
export default class Checkbox extends React.PureComponent {
static propTypes = {
/**
* any [React-supported attribute](https://facebook.github.io/react/docs/tags-and-attributes.html#html-attributes)
*/
'*': PropTypes.any,
/**
* any valid HTML tag name
*/
component: PropTypes.string,
/**
* all input-specific props like `value`, `name`, etc should be passed here -- common ones are listed below
*/
inputProps: PropTypes.shape({
/**
* any [React-supported attribute](https://facebook.github.io/react/docs/tags-and-attributes.html#html-attributes)
*/
'*': PropTypes.any,
/**
* determines if the checkbox is rendered as checked/unchecked, see React ["controlled inputs"](https://facebook.github.io/react/docs/forms.html#controlled-components))
*/
checked: PropTypes.bool,
className: PropTypes.string,
/**
* prevents the `on{Checked,Unchecked}` events from firing when `true`
*/
disabled: PropTypes.bool,
id: PropTypes.string,
/**
* enables or disables "mixed" checkbox state, read this [CSS-Tricks article](https://css-tricks.com/indeterminate-checkboxes/) for more information and examples
*/
indeterminate: PropTypes.bool,
onChange: PropTypes.func,
onClick: PropTypes.func,
/**
* rendered as the input control's form name
*/
name: PropTypes.string,
/**
* passed-through to the input node, like `name`
*/
value: PropTypes.string,
}),
/**
* any React-renderable content, most commonly a simple string
*/
label: PropTypes.node,
labelProps: PropTypes.shape({
/**
* any [React-supported attribute](https://facebook.github.io/react/docs/tags-and-attributes.html#html-attributes)
*/
'*': PropTypes.any,
}),
/**
* called when the element becomes checked; backing data must be updated to persist the state change
*/
onChecked: PropTypes.func,
/**
* called when the element becomes unchecked; backing data must be updated to persist the state change
*/
onUnchecked: PropTypes.func,
}
static defaultProps = {
component: 'div',
inputProps: {
checked: false,
indeterminate: false,
},
label: null,
labelProps: {},
onChecked: noop,
onUnchecked: noop,
}
static internalKeys = Object.keys(Checkbox.defaultProps)
id = uuid()
componentDidMount() {
if (this.props.inputProps.indeterminate) {
this.setIndeterminate();
}
}
componentDidUpdate(prevProps) {
if (prevProps.inputProps.indeterminate !== this.props.inputProps.indeterminate) {
this.setIndeterminate();
}
}
setIndeterminate() {
this.refs.input.indeterminate = !!this.props.inputProps.indeterminate;
}
handleChange = (event) => { // Send the opposite signal from what was passed to toggle the data
if (this.props.inputProps.disabled) { return; }
this.props[!this.props.inputProps.checked ? 'onChecked' : 'onUnchecked'](this.props.inputProps.name);
if (isFunction(this.props.inputProps.onChange)) {
this.props.inputProps.onChange(event);
}
}
handleClick = (event) => {
if (this.props.inputProps.disabled) { return; }
this.refs.input.focus();
if (isFunction(this.props.inputProps.onClick)) {
this.props.inputProps.onClick(event);
}
}
getAriaState() {
return this.props.inputProps.indeterminate ? 'mixed' : String(this.props.inputProps.checked);
}
renderInput() {
return (
<input
{...omit(this.props.inputProps, 'indeterminate')}
ref='input'
type='checkbox'
className={cx('b-checkbox', this.props.inputProps.className, {
'b-checkbox-mixed': this.props.inputProps.indeterminate,
'b-checkbox-checked': this.props.inputProps.checked,
'b-checkbox-unchecked': !this.props.inputProps.indeterminate && !this.props.inputProps.checked,
})}
id={this.props.inputProps.id || this.id}
aria-checked={this.getAriaState()}
onChange={this.handleChange}
onClick={this.handleClick} />
);
}
renderLabel() {
if (this.props.label) {
return (
<label
{...this.props.labelProps}
ref='label'
className={cx('b-checkbox-label', this.props.labelProps.className)}
htmlFor={this.props.inputProps.id || this.id}>
{this.props.label}
</label>
);
}
}
render() {
return (
<this.props.component
{...omit(this.props, Checkbox.internalKeys)}
ref='wrapper'
className={cx('b-checkbox-wrapper', this.props.className)}>
{this.renderInput()}
{this.renderLabel()}
</this.props.component>
);
}
}
|