Fix GH-195: Use a spinner component to convey activity while logging in

package.json

@@ -46,6 +46,7 @@
     "lodash.clone": "3.0.3",
     "lodash.defaultsdeep": "3.10.0",
     "lodash.omit": "3.1.0",
+    "lodash.range": "3.0.1",
     "minilog": "2.0.8",
     "node-sass": "3.3.3",
     "po2icu": "git://github.com/LLK/po2icu.git#develop",

src/components/login/login.jsx

@@ -2,8 +2,11 @@ var React = require('react');
 var ReactDOM = require('react-dom');
 var FormattedMessage = require('react-intl').FormattedMessage;
 
+var log = require('../../lib/log.js');
+
 var Input = require('../forms/input.jsx');
 var Button = require('../forms/button.jsx');
+var Spinner = require('../spinner/spinner.jsx');
 
 require('./login.scss');
 
@@ -13,12 +16,21 @@ var Login = React.createClass({
         onLogIn: React.PropTypes.func,
         error: React.PropTypes.string
     },
+    getInitialState: function () {
+        return {
+            waiting: false
+        };
+    },
     handleSubmit: function (event) {
         event.preventDefault();
+        this.setState({waiting: true});
         this.props.onLogIn({
             'username': ReactDOM.findDOMNode(this.refs.username).value,
             'password': ReactDOM.findDOMNode(this.refs.password).value
-        });
+        }, function (err) {
+            if (err) log.error(err);
+            this.setState({waiting: false});
+        }.bind(this));
     },
     render: function () {
         var error;
@@ -40,11 +52,17 @@ var Login = React.createClass({
                             defaultMessage={'Password'} />
                     </label>
                     <Input type="password" ref="password" name="password" />
-                    <Button className="submit-button white" type="submit">
-                        <FormattedMessage
-                            id='general.signIn'
-                            defaultMessage={'Sign in'} />
-                    </Button>
+                    {this.state.waiting ? [
+                        <Button className="submit-button white" type="submit" disabled="disabled">
+                            <Spinner />
+                        </Button>
+                    ] : [
+                        <Button className="submit-button white" type="submit">
+                            <FormattedMessage
+                                id='general.signIn'
+                                defaultMessage={'Sign in'} />
+                        </Button>
+                    ]}
                     <a className="right" href="/accounts/password_reset/">
                         <FormattedMessage
                             id='login.forgotPassword'

src/components/login/login.scss

@@ -8,6 +8,12 @@
         font-weight: bold;
     }
 
+    .spinner {
+        margin: 0 .8rem;
+        width: 1rem;
+        height: 1rem;
+    }
+
     .submit-button {
         margin-top: 5px;
     }

src/components/navigation/navigation.jsx

@@ -109,7 +109,7 @@ var Navigation = React.createClass({
     closeLogin: function () {
         this.setState({'loginOpen': false});
     },
-    handleLogIn: function (formData) {
+    handleLogIn: function (formData, callback) {
         this.setState({'loginError': null});
         formData['useMessages'] = true;
         this.api({
@@ -135,6 +135,7 @@ var Navigation = React.createClass({
                     }.bind(this));
                     window.refreshSession();
                 }
+                callback();
             }
         }.bind(this));
     },

src/components/spinner/spinner.jsx

@@ -0,0 +1,20 @@
+var range = require('lodash.range');
+var React = require('react');
+
+require('./spinner.scss');
+
+var Spinner = React.createClass({
+    // Adapted from http://tobiasahlin.com/spinkit/
+    type: 'Spinner',
+    render: function () {
+        return (
+            <div className="spinner">
+                {range(1,13).map(function (id) {
+                    return <div className={'circle' + id + ' circle'}></div>;
+                })}
+            </div>
+        );
+    }
+});
+
+module.exports = Spinner;

src/components/spinner/spinner.scss

@@ -0,0 +1,47 @@
+@import "../../colors";
+
+.spinner {
+    position: relative;
+    width: 20px;
+    height: 20px;
+
+    .circle {
+        position: absolute;
+        top: 0;
+        left: 0;
+        width: 100%;
+        height: 100%;
+
+        &:before {
+            display: block;
+            animation: circleFadeDelay 1.2s infinite ease-in-out both;
+            margin: 0 auto;
+            border-radius: 100%;
+            background-color: darken($ui-blue, 8%);
+            width: 15%;
+            height: 15%;
+            content: "";
+            -webkit-animation: circleFadeDelay 1.2s infinite ease-in-out both;
+        }
+    }
+
+    @for $i from 1 through 12 {
+        $rotation: 30deg * ($i - 1);
+        $delay: -1.3s + $i * .1;
+        .circle#{$i} {
+            transform: rotate($rotation);
+            -ms-transform: rotate($rotation);
+            -webkit-transform: rotate($rotation);
+        }
+        .circle#{$i}:before {
+            animation-delay: $delay; 
+            -webkit-animation-delay: $delay;
+        }
+    }
+
+}
+
+@keyframes circleFadeDelay {
+    0%, 39%, 100% { opacity: 0; }
+    40% { opacity: 1; } 
+}

src/views/components/components.jsx

@@ -6,6 +6,7 @@ var Box = require('../../components/box/box.jsx');
 var Button = require('../../components/forms/button.jsx');
 var Carousel = require('../../components/carousel/carousel.jsx');
 var Input = require('../../components/forms/input.jsx');
+var Spinner = require('../../components/spinner/spinner.jsx');
 
 
 require('./components.scss');
@@ -37,6 +38,8 @@ var Components = React.createClass({
                 <Activity />
                 <h1>{'Nothing!!!'}</h1>
                 <Activity items={[]} />
+                <h1>This is a Spinner</h1>
+                <Spinner />
             </div>
         );
     }