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

Simple form validation for React

import * as React from 'react';
import { instanceOf } from 'prop-types';
import { FormWithConstraints } from './FormWithConstraints';
export class Input extends React.Component {
    constructor() {
        super(...arguments);
        this.state = {
            field: undefined
        };
        this.fieldWillValidate = (fieldName) => {
            if (fieldName === this.props.name) {
                this.setState({ field: 'pending' });
            }
        };
        this.fieldDidValidate = (field) => {
            if (field.name === this.props.name) {
                this.setState({ field });
            }
        };
        this.fieldDidReset = (field) => {
            if (field.name === this.props.name) {
                this.setState({ field: 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);
    }
    fieldValidationStates() {
        const { field } = this.state;
        const states = [];
        if (field !== undefined) {
            if (field === 'pending') {
                states.push('isPending');
            }
            else {
                if (field.hasErrors())
                    states.push('hasErrors');
                if (field.hasWarnings())
                    states.push('hasWarnings');
                if (field.hasInfos())
                    states.push('hasInfos');
                if (field.isValid())
                    states.push('isValid');
            }
        }
        return states;
    }
    render() {
        const { innerRef, className, classes, ...inputProps } = this.props;
        const validationStates = this.fieldValidationStates();
        let classNames = className;
        validationStates.forEach(validationState => {
            const tmp = classes[validationState];
            if (tmp !== undefined) {
                if (classNames !== undefined) {
                    classNames += ` ${tmp}`;
                }
                else {
                    classNames = tmp;
                }
            }
        });
        return React.createElement("input", { ref: innerRef, ...inputProps, className: classNames });
    }
}
Input.contextTypes = {
    form: instanceOf(FormWithConstraints).isRequired
};
Input.defaultProps = {
    classes: {
        isPending: 'is-pending',
        hasErrors: 'has-errors',
        hasWarnings: 'has-warnings',
        hasInfos: 'has-infos',
        isValid: 'is-valid'
    }
};