2017-08-20 21:15:21 +05:30
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// @flow
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import React, { Component } from 'react';
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2016-05-02 12:45:42 +05:30
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import classNames from 'classnames';
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2017-06-13 01:02:59 +05:30
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import logger from 'services/logger';
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2016-05-02 14:50:50 +05:30
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2016-05-02 12:45:42 +05:30
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import styles from './form.scss';
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2017-08-20 21:15:21 +05:30
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import type FormModel from './FormModel';
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type Props = {
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id: string,
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isLoading: bool,
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form?: FormModel,
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onSubmit: Function,
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onInvalid: (errors: {[errorKey: string]: string}) => void,
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children: *
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};
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2017-08-23 02:01:41 +05:30
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type State = {
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isTouched: bool,
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isLoading: bool
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};
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2017-08-20 21:15:21 +05:30
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type InputElement = HTMLInputElement|HTMLTextAreaElement;
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2017-08-23 02:01:41 +05:30
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export default class Form extends Component<Props, State> {
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static defaultProps = {
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id: 'default',
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isLoading: false,
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onSubmit() {},
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onInvalid() {}
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};
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state = {
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isTouched: false,
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isLoading: this.props.isLoading || false
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};
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2017-08-20 21:15:21 +05:30
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formEl: ?HTMLFormElement;
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componentWillMount() {
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if (this.props.form) {
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this.props.form.addLoadingListener(this.onLoading);
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}
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}
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componentWillReceiveProps(nextProps: Props) {
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if (nextProps.id !== this.props.id) {
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this.setState({
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isTouched: false
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});
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}
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2016-08-14 14:31:04 +05:30
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if (typeof nextProps.isLoading !== 'undefined'
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&& nextProps.isLoading !== this.state.isLoading
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) {
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this.setState({
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isLoading: nextProps.isLoading
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});
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}
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const nextForm = nextProps.form;
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if (nextForm
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&& this.props.form
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&& nextForm !== this.props.form
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) {
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this.props.form.removeLoadingListener(this.onLoading);
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nextForm.addLoadingListener(this.onLoading);
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}
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}
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componentWillUnmount() {
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if (this.props.form) {
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this.props.form.removeLoadingListener(this.onLoading);
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}
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}
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render() {
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const {isLoading} = this.state;
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return (
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<form
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className={classNames(
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styles.form,
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{
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[styles.isFormLoading]: isLoading,
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[styles.formTouched]: this.state.isTouched
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}
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)}
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onSubmit={this.onFormSubmit}
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ref={(el: ?HTMLFormElement) => this.formEl = el}
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noValidate
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>
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{this.props.children}
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</form>
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);
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}
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submit() {
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if (!this.state.isTouched) {
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this.setState({
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isTouched: true
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});
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}
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2017-08-20 21:15:21 +05:30
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const form = this.formEl;
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if (!form) {
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return;
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}
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if (form.checkValidity()) {
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Promise.resolve(this.props.onSubmit(
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this.props.form ? this.props.form : new FormData(form)
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))
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.catch((errors: {[key: string]: string}) => {
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this.setErrors(errors);
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});
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} else {
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const invalidEls = form.querySelectorAll(':invalid');
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const errors = {};
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invalidEls[0].focus(); // focus on first error
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2017-08-20 21:15:21 +05:30
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Array.from(invalidEls).reduce((errors, el: InputElement) => {
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if (!el.name) {
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logger.warn('Found an element without name', {el});
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return errors;
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}
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let errorMessage = el.validationMessage;
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if (el.validity.valueMissing) {
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errorMessage = `error.${el.name}_required`;
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} else if (el.validity.typeMismatch) {
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errorMessage = `error.${el.name}_invalid`;
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}
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errors[el.name] = errorMessage;
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2016-05-02 14:50:50 +05:30
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return errors;
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}, errors);
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this.setErrors(errors);
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}
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}
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setErrors(errors: {[key: string]: string}) {
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this.props.form && this.props.form.setErrors(errors);
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this.props.onInvalid(errors);
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}
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onFormSubmit = (event: Event) => {
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event.preventDefault();
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this.submit();
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2016-05-02 12:45:42 +05:30
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};
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2017-08-20 21:15:21 +05:30
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onLoading = (isLoading: bool) => this.setState({isLoading});
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2016-05-02 12:45:42 +05:30
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}
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