react-form-with-constraints/dist/FieldFeedbackWhenValid.js

Simple form validation for React

import * as React from 'react';
import { instanceOf } from 'prop-types';
import { FieldFeedbacks } from './FieldFeedbacks';
import { FormWithConstraints } from './FormWithConstraints';
export class FieldFeedbackWhenValid extends React.Component {
    constructor() {
        super(...arguments);
        this.state = {
            fieldIsValid: undefined
        };
        this.fieldWillValidate = (fieldName) => {
            if (fieldName === this.context.fieldFeedbacks.fieldName) {
                this.setState({ fieldIsValid: undefined });
            }
        };
        this.fieldDidValidate = (field) => {
            if (field.name === this.context.fieldFeedbacks.fieldName) {
                this.setState({ fieldIsValid: field.isValid() });
            }
        };
        this.fieldDidReset = (field) => {
            if (field.name === this.context.fieldFeedbacks.fieldName) {
                this.setState({ fieldIsValid: undefined });
            }
        };
    }
    componentDidMount() {
        this.context.form.addFieldWillValidateEventListener(this.fieldWillValidate);
        this.context.form.addFieldDidValidateEventListener(this.fieldDidValidate);
        this.context.form.addFieldDidResetEventListener(this.fieldDidReset);
    }
    componentWillUnmount() {
        this.context.form.removeFieldWillValidateEventListener(this.fieldWillValidate);
        this.context.form.removeFieldDidValidateEventListener(this.fieldDidValidate);
        this.context.form.removeFieldDidResetEventListener(this.fieldDidReset);
    }
    render() {
        const { style, ...otherProps } = this.props;
        return this.state.fieldIsValid ? (React.createElement("span", { ...otherProps, style: { display: 'block', ...style } })) : null;
    }
}
FieldFeedbackWhenValid.contextTypes = {
    form: instanceOf(FormWithConstraints).isRequired,
    fieldFeedbacks: instanceOf(FieldFeedbacks).isRequired
};