ant-design/components/form/FormItem.tsx

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import * as React from 'react';
import classNames from 'classnames';
import PureRenderMixin from 'react-addons-pure-render-mixin';
import Row from '../row';
import Col from '../col';
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import { FIELD_META_PROP } from './constants';
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export default class FormItem extends React.Component {
static defaultProps = {
hasFeedback: false,
prefixCls: 'ant-form',
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colon: true,
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};
static propTypes = {
prefixCls: React.PropTypes.string,
label: React.PropTypes.node,
labelCol: React.PropTypes.object,
help: React.PropTypes.oneOfType([React.PropTypes.node, React.PropTypes.bool]),
validateStatus: React.PropTypes.oneOf(['', 'success', 'warning', 'error', 'validating']),
hasFeedback: React.PropTypes.bool,
wrapperCol: React.PropTypes.object,
className: React.PropTypes.string,
id: React.PropTypes.string,
children: React.PropTypes.node,
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colon: React.PropTypes.bool,
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};
static contextTypes = {
form: React.PropTypes.object,
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};
shouldComponentUpdate(...args) {
return PureRenderMixin.shouldComponentUpdate.apply(this, args);
}
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getHelpMsg() {
const context = this.context;
const props = this.props;
if (props.help === undefined && context.form) {
return this.getId() ? (context.form.getFieldError(this.getId()) || []).join(', ') : '';
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}
return props.help;
}
getOnlyControl() {
const children = React.Children.toArray(this.props.children);
const child = children.filter((c) => {
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return c.props && FIELD_META_PROP in c.props;
})[0];
return child !== undefined ? child : null;
}
getChildProp(prop) {
const child = this.getOnlyControl();
return child && child.props && child.props[prop];
}
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getId() {
return this.getChildProp('id');
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}
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getMeta() {
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return this.getChildProp(FIELD_META_PROP);
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}
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renderHelp() {
const prefixCls = this.props.prefixCls;
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const help = this.getHelpMsg();
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return help ? (
<div className={`${prefixCls}-explain`} key="help">
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{help}
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</div>
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) : null;
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}
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renderExtra() {
const { prefixCls, extra } = this.props;
return extra ? (
<span className={`${prefixCls}-extra`}>{extra}</span>
) : null;
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}
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getValidateStatus() {
const { isFieldValidating, getFieldError, getFieldValue } = this.context.form;
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const field = this.getId();
if (!field) {
return '';
}
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if (isFieldValidating(field)) {
return 'validating';
} else if (!!getFieldError(field)) {
return 'error';
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} else if (getFieldValue(field) !== undefined) {
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return 'success';
}
return '';
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}
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renderValidateWrapper(c1, c2, c3) {
let classes = '';
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const form = this.context.form;
const props = this.props;
const validateStatus = (props.validateStatus === undefined && form) ?
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this.getValidateStatus() :
props.validateStatus;
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if (validateStatus) {
classes = classNames(
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{
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'has-feedback': props.hasFeedback,
'has-success': validateStatus === 'success',
'has-warning': validateStatus === 'warning',
'has-error': validateStatus === 'error',
'is-validating': validateStatus === 'validating',
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}
);
}
return (
<div className={`${this.props.prefixCls}-item-control ${classes}`}>
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{c1}{c2}{c3}
</div>
);
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}
renderWrapper(children) {
const wrapperCol = this.props.wrapperCol;
return (
<Col {...wrapperCol} key="wrapper">
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{children}
</Col>
);
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}
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isRequired() {
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if (this.context.form) {
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const meta = this.getMeta() || {};
const validate = (meta.validate || []);
return validate.filter((item) => !!item.rules).some((item) => {
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return item.rules.some((rule) => rule.required);
});
}
return false;
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}
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renderLabel() {
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const props = this.props;
const labelCol = props.labelCol;
const required = props.required === undefined ?
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this.isRequired() :
props.required;
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const className = classNames({
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[`${props.prefixCls}-item-required`]: required,
});
// remove user input colon
let label = props.label;
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if (typeof label === 'string' && label.trim() !== '') {
label = props.label.replace(/[|:]\s*$/, '');
}
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return props.label ? (
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<Col {...labelCol} key="label" className={`${props.prefixCls}-item-label`}>
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<label htmlFor={props.id || this.getId()} className={className}>
{label}
</label>
</Col>
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) : null;
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}
renderChildren() {
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const props = this.props;
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const children = React.Children.map(props.children, (child) => {
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if (child && typeof child.type === 'function' && !child.props.size) {
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return React.cloneElement(child, { size: 'large' });
}
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return child;
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});
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return [
this.renderLabel(),
this.renderWrapper(
this.renderValidateWrapper(
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children,
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this.renderHelp(),
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this.renderExtra()
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)
),
];
}
renderFormItem(children) {
const props = this.props;
const prefixCls = props.prefixCls;
const style = props.style;
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const itemClassName = {
[`${prefixCls}-item`]: true,
[`${prefixCls}-item-with-help`]: !!this.getHelpMsg(),
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[`${prefixCls}-item-no-colon`]: !props.colon,
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[`${props.className}`]: !!props.className,
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};
return (
<Row className={classNames(itemClassName)} style={style}>
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{children}
</Row>
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);
}
render() {
const children = this.renderChildren();
return this.renderFormItem(children);
}
}