#100: form loading state for profile

package.json

@@ -22,6 +22,7 @@
     "intl": "^1.2.2",
     "intl-format-cache": "^2.0.4",
     "intl-messageformat": "^1.1.0",
+    "promise.prototype.finally": "^1.0.1",
     "react": "^15.0.0",
     "react-dom": "^15.0.0",
     "react-helmet": "^2.3.1",

src/components/profile/changeEmail/ChangeEmail.jsx

@@ -108,6 +108,7 @@ export default class ChangeEmail extends Component {
 
                         <Button
                             color="violet"
+                            type="submit"
                             block
                             label={this.isLastStep() ? messages.changeEmailButton : messages.sendEmailButton}
                             onClick={this.onSubmit}

src/components/profile/changePassword/ChangePassword.jsx

@@ -88,7 +88,7 @@ export default class ChangePassword extends Component {
                             </div>
                         </div>
 
-                        <Button color="green" block label={messages.changePasswordButton} />
+                        <Button color="green" block label={messages.changePasswordButton} type="submit" />
                     </div>
                 </div>
             </Form>

src/components/profile/changeUsername/ChangeUsername.jsx

@@ -1,7 +1,6 @@
 import React, { Component, PropTypes } from 'react';
 
 import { FormattedMessage as Message } from 'react-intl';
-import { Link } from 'react-router';
 import Helmet from 'react-helmet';
 
 import { Input, Button, Form, FormModel } from 'components/ui/form';
@@ -69,7 +68,7 @@ export default class ChangeUsername extends Component {
                             </div>
                         </div>
 
-                        <Button color="green" block label={messages.changeUsernameButton} />
+                        <Button color="green" block label={messages.changeUsernameButton} type="submit" />
                     </div>
                 </div>
             </Form>

src/components/profile/passwordRequestForm/PasswordRequestForm.jsx

@@ -18,7 +18,7 @@ export default class PasswordRequestForm extends Component {
         const {form} = this.props;
 
         return (
-            <Form onSubmit={this.onSubmit}
+            <Form onSubmit={this.onFormSubmit}
                 form={form}
             >
                 <h2>
@@ -34,12 +34,12 @@ export default class PasswordRequestForm extends Component {
                     icon="key"
                     placeholder={messages.pleaseEnterPassword}
                 />
-                <Button color="green" label="OK" block />
+                <Button color="green" label="OK" block type="submit" />
             </Form>
         );
     }
 
-    onSubmit = () => {
+    onFormSubmit = () => {
         this.props.onSubmit(this.props.form);
     };
 }

src/components/ui/form/Form.jsx

@@ -29,19 +29,42 @@ export default class Form extends Component {
     };
 
     state = {
-        isTouched: false
+        isTouched: false,
+        isLoading: this.props.isLoading || false
     };
 
+    componentWillMount() {
+        if (this.props.form) {
+            this.props.form.addLoadingListener(this.onLoading);
+        }
+    }
+
     componentWillReceiveProps(nextProps) {
         if (nextProps.id !== this.props.id) {
             this.setState({
                 isTouched: false
             });
         }
+
+        if (typeof nextProps.isLoading !== 'undefined') {
+            this.setState({
+                isLoading: nextProps.isLoading
+            });
+        }
+
+        if (nextProps.form && nextProps.form !== this.props.form) {
+            throw new Error('The FormModel instance should not be changed during component lifetime');
+        }
+    }
+
+    componentWillUnmount() {
+        if (this.props.form) {
+            this.props.form.removeLoadingListener(this.onLoading);
+        }
     }
 
     render() {
-        const {isLoading} = this.props;
+        const {isLoading} = this.state;
 
         return (
             <form
@@ -100,4 +123,6 @@ export default class Form extends Component {
             this.props.onInvalid(errors);
         }
     };
+
+    onLoading = (isLoading) => this.setState({isLoading});
 }

src/components/ui/form/FormModel.js

@@ -3,6 +3,7 @@ import FormInputComponent from './FormInputComponent';
 export default class FormModel {
     fields = {};
     errors = {};
+    handlers = [];
 
     /**
      * Connects form with React's component
@@ -83,4 +84,31 @@ export default class FormModel {
             return acc;
         }, {});
     }
+
+    /**
+     * Bind handler to listen for form loading state change
+     *
+     * @param {Function} fn
+     */
+    addLoadingListener(fn) {
+        this.removeLoadingListener(fn);
+        this.handlers.push(fn);
+    }
+
+    /**
+     * Remove form loading state handler
+     *
+     * @param {Function} fn
+     */
+    removeLoadingListener(fn) {
+        this.handlers = this.handlers.filter((handler) => handler !== fn);
+    }
+
+    beginLoading() {
+        this.handlers.forEach((fn) => fn(true));
+    }
+
+    endLoading() {
+        this.handlers.forEach((fn) => fn(false));
+    }
 }

src/index.js

@@ -1,4 +1,5 @@
 import 'babel-polyfill';
+import 'promise.prototype.finally';
 
 import React from 'react';
 import ReactDOM from 'react-dom';

src/pages/profile/ProfilePage.jsx

@@ -50,8 +50,9 @@ export default connect(null, {
         return routeActions.push('/');
     },
     fetchUserData,
-    onSubmit: ({form, sendData}) => (dispatch) =>
-        sendData()
+    onSubmit: ({form, sendData}) => (dispatch) => {
+        form.beginLoading();
+        return sendData()
             .catch((resp) => {
                 const requirePassword = resp.errors && !!resp.errors.password;
 
@@ -73,6 +74,7 @@ export default connect(null, {
                     dispatch(createPopup(PasswordRequestForm, (props) => ({
                         form,
                         onSubmit: () => {
+                            form.beginLoading();
                             sendData()
                                 .catch((resp) => {
                                     if (resp.errors) {
@@ -82,11 +84,14 @@ export default connect(null, {
                                     return Promise.reject(resp);
                                 })
                                 .then(resolve)
-                            .then(props.onClose);
+                                .then(props.onClose)
+                                .finally(() => form.endLoading());
                         }
                     })));
                 } else {
                     resolve();
                 }
             }))
+            .finally(() => form.endLoading());
+    }
 })(ProfilePage);