Merge pull request #1802 from hmhealey/plt1449

PLT-1449 Made Youtube previews stop when the current channel is changed

3 files changed, 184 insertions, 118 deletions

diff --git a/web/react/components/post_body.jsx b/web/react/components/post_body.jsx
index dcbe56399..b1657f0eb 100644
--- a/web/react/components/post_body.jsx
+++ b/web/react/components/post_body.jsx
@@ -10,6 +10,7 @@ const PreReleaseFeatures = Constants.PRE_RELEASE_FEATURES;
 import * as TextFormatting from '../utils/text_formatting.jsx';
 import twemoji from 'twemoji';
 import PostBodyAdditionalContent from './post_body_additional_content.jsx';
+import YoutubeVideo from './youtube_video.jsx';
 
 import providers from './providers.json';
 
@@ -17,7 +18,6 @@ export default class PostBody extends React.Component {
     constructor(props) {
         super(props);
 
-        this.receivedYoutubeData = false;
         this.isImgLoading = false;
 
         this.handleUserChange = this.handleUserChange.bind(this);
@@ -25,7 +25,6 @@ export default class PostBody extends React.Component {
         this.createEmbed = this.createEmbed.bind(this);
         this.createImageEmbed = this.createImageEmbed.bind(this);
         this.loadImg = this.loadImg.bind(this);
-        this.createYoutubeEmbed = this.createYoutubeEmbed.bind(this);
 
         const linkData = Utils.extractLinks(this.props.post.message);
         const profiles = UserStore.getProfiles();
@@ -120,10 +119,13 @@ export default class PostBody extends React.Component {
             }
         }
 
-        const embed = this.createYoutubeEmbed(link);
-
-        if (embed != null) {
-            return embed;
+        if (YoutubeVideo.isYoutubeLink(link)) {
+            return (
+                <YoutubeVideo
+                    channelId={post.channel_id}
+                    link={link}
+                />
+            );
         }
 
         for (let i = 0; i < Constants.IMAGE_TYPES.length; i++) {
@@ -184,117 +186,6 @@ export default class PostBody extends React.Component {
         );
     }
 
-    handleYoutubeTime(link) {
-        const timeRegex = /[\\?&]t=([0-9hms]+)/;
-
-        const time = link.match(timeRegex);
-        if (!time || !time[1]) {
-            return '';
-        }
-
-        const hours = time[1].match(/([0-9]+)h/);
-        const minutes = time[1].match(/([0-9]+)m/);
-        const seconds = time[1].match(/([0-9]+)s/);
-
-        let ticks = 0;
-
-        if (hours && hours[1]) {
-            ticks += parseInt(hours[1], 10) * 3600;
-        }
-
-        if (minutes && minutes[1]) {
-            ticks += parseInt(minutes[1], 10) * 60;
-        }
-
-        if (seconds && seconds[1]) {
-            ticks += parseInt(seconds[1], 10);
-        }
-
-        return '&start=' + ticks.toString();
-    }
-
-    createYoutubeEmbed(link) {
-        const ytRegex = /(?:http|https):\/\/(?:www\.)?(?:(?:youtube\.com\/(?:(?:v\/)|(\/u\/\w\/)|(?:(?:watch|embed\/watch)(?:\/|.*v=))|(?:embed\/)|(?:user\/[^\/]+\/u\/[0-9]\/)))|(?:youtu\.be\/))([^#\&\?]*)/;
-
-        const match = link.trim().match(ytRegex);
-        if (!match || match[2].length !== 11) {
-            return null;
-        }
-
-        const youtubeId = match[2];
-        const time = this.handleYoutubeTime(link);
-
-        function onClick(e) {
-            var div = $(e.target).closest('.video-thumbnail__container')[0];
-            var iframe = document.createElement('iframe');
-            iframe.setAttribute('src',
-                                'https://www.youtube.com/embed/' +
-                                div.id +
-                                '?autoplay=1&autohide=1&border=0&wmode=opaque&fs=1&enablejsapi=1' +
-                                time);
-            iframe.setAttribute('width', '480px');
-            iframe.setAttribute('height', '360px');
-            iframe.setAttribute('type', 'text/html');
-            iframe.setAttribute('frameborder', '0');
-            iframe.setAttribute('allowfullscreen', 'allowfullscreen');
-
-            div.parentNode.replaceChild(iframe, div);
-        }
-
-        function success(data) {
-            if (!data.items.length || !data.items[0].snippet) {
-                return null;
-            }
-            var metadata = data.items[0].snippet;
-            this.receivedYoutubeData = true;
-            this.setState({youtubeTitle: metadata.title});
-        }
-
-        if (global.window.mm_config.GoogleDeveloperKey && !this.receivedYoutubeData) {
-            $.ajax({
-                async: true,
-                url: 'https://www.googleapis.com/youtube/v3/videos',
-                type: 'GET',
-                data: {part: 'snippet', id: youtubeId, key: global.window.mm_config.GoogleDeveloperKey},
-                success: success.bind(this)
-            });
-        }
-
-        let header = 'Youtube';
-        if (this.state.youtubeTitle) {
-            header = header + ' - ';
-        }
-
-        return (
-            <div>
-                <h4>
-                    <span className='video-type'>{header}</span>
-                    <span className='video-title'><a href={link}>{this.state.youtubeTitle}</a></span>
-                </h4>
-                <div
-                    className='video-div embed-responsive-item'
-                    id={youtubeId}
-                    onClick={onClick}
-                >
-                    <div className='embed-responsive embed-responsive-4by3 video-div__placeholder'>
-                        <div
-                            id={youtubeId}
-                            className='video-thumbnail__container'
-                        >
-                            <img
-                                className='video-thumbnail'
-                                src={'https://i.ytimg.com/vi/' + youtubeId + '/hqdefault.jpg'}
-                            />
-                            <div className='block'>
-                                <span className='play-button'><span/></span>
-                            </div>
-                        </div>
-                    </div>
-                </div>
-            </div>
-        );
-    }
-
     render() {
         const post = this.props.post;
         const filenames = this.props.post.filenames;
diff --git a/web/react/components/youtube_video.jsx b/web/react/components/youtube_video.jsx
new file mode 100644
index 000000000..bf3c43840
--- /dev/null
+++ b/web/react/components/youtube_video.jsx
@@ -0,0 +1,175 @@
+// Copyright (c) 2015 Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+import ChannelStore from '../stores/channel_store.jsx';
+
+const ytRegex = /(?:http|https):\/\/(?:www\.)?(?:(?:youtube\.com\/(?:(?:v\/)|(\/u\/\w\/)|(?:(?:watch|embed\/watch)(?:\/|.*v=))|(?:embed\/)|(?:user\/[^\/]+\/u\/[0-9]\/)))|(?:youtu\.be\/))([^#\&\?]*)/;
+
+export default class YoutubeVideo extends React.Component {
+    constructor(props) {
+        super(props);
+
+        this.updateStateFromProps = this.updateStateFromProps.bind(this);
+        this.handleReceivedMetadata = this.handleReceivedMetadata.bind(this);
+
+        this.play = this.play.bind(this);
+        this.stop = this.stop.bind(this);
+        this.stopOnChannelChange = this.stopOnChannelChange.bind(this);
+
+        this.state = {
+            playing: false,
+            title: ''
+        };
+    }
+
+    componentWillMount() {
+        this.updateStateFromProps(this.props);
+    }
+
+    componentWillReceiveProps(nextProps) {
+        this.updateStateFromProps(nextProps);
+    }
+
+    updateStateFromProps(props) {
+        const link = props.link;
+
+        const match = link.trim().match(ytRegex);
+        if (!match || match[2].length !== 11) {
+            return;
+        }
+
+        this.setState({
+            videoId: match[2],
+            time: this.handleYoutubeTime(link)
+        });
+    }
+
+    handleYoutubeTime(link) {
+        const timeRegex = /[\\?&]t=([0-9hms]+)/;
+
+        const time = link.match(timeRegex);
+        if (!time || !time[1]) {
+            return '';
+        }
+
+        const hours = time[1].match(/([0-9]+)h/);
+        const minutes = time[1].match(/([0-9]+)m/);
+        const seconds = time[1].match(/([0-9]+)s/);
+
+        let ticks = 0;
+
+        if (hours && hours[1]) {
+            ticks += parseInt(hours[1], 10) * 3600;
+        }
+
+        if (minutes && minutes[1]) {
+            ticks += parseInt(minutes[1], 10) * 60;
+        }
+
+        if (seconds && seconds[1]) {
+            ticks += parseInt(seconds[1], 10);
+        }
+
+        return '&start=' + ticks.toString();
+    }
+
+    componentDidMount() {
+        if (global.window.mm_config.GoogleDeveloperKey) {
+            $.ajax({
+                async: true,
+                url: 'https://www.googleapis.com/youtube/v3/videos',
+                type: 'GET',
+                data: {part: 'snippet', id: this.state.videoId, key: global.window.mm_config.GoogleDeveloperKey},
+                success: this.handleReceivedMetadata
+            });
+        }
+    }
+
+    handleReceivedMetadata(data) {
+        if (!data.items.length || !data.items[0].snippet) {
+            return null;
+        }
+        var metadata = data.items[0].snippet;
+        this.setState({
+            receivedYoutubeData: true,
+            title: metadata.title
+        });
+    }
+
+    play() {
+        this.setState({playing: true});
+
+        if (ChannelStore.getCurrentId() === this.props.channelId) {
+            ChannelStore.addChangeListener(this.stopOnChannelChange);
+        }
+    }
+
+    stop() {
+        this.setState({playing: false});
+    }
+
+    stopOnChannelChange() {
+        if (ChannelStore.getCurrentId() !== this.props.channelId) {
+            this.stop();
+        }
+    }
+
+    render() {
+        let header = 'Youtube';
+        if (this.state.title) {
+            header = header + ' - ';
+        }
+
+        let content;
+        if (this.state.playing) {
+            content = (
+                <iframe
+                    src={'https://www.youtube.com/embed/' + this.state.videoId + '?autoplay=1&autohide=1&border=0&wmode=opaque&fs=1&enablejsapi=1' + this.state.time}
+                    width='480px'
+                    height='360px'
+                    type='text/html'
+                    frameBorder='0'
+                    allowFullScreen='allowfullscreen'
+                />
+            );
+        } else {
+            content = (
+                <div className='embed-responsive embed-responsive-4by3 video-div__placeholder'>
+                    <div className='video-thumbnail__container'>
+                        <img
+                            className='video-thumbnail'
+                            src={'https://i.ytimg.com/vi/' + this.state.videoId + '/hqdefault.jpg'}
+                        />
+                        <div className='block'>
+                            <span className='play-button'><span/></span>
+                        </div>
+                    </div>
+                </div>
+            );
+        }
+
+        return (
+            <div>
+                <h4>
+                    <span className='video-type'>{header}</span>
+                    <span className='video-title'><a href={this.props.link}>{this.state.title}</a></span>
+                </h4>
+                <div
+                    className='video-div embed-responsive-item'
+                    onClick={this.play}
+                >
+                    {content}
+                </div>
+            </div>
+        );
+    }
+
+    static isYoutubeLink(link) {
+        return link.trim().match(ytRegex);
+    }
+}
+
+YoutubeVideo.propTypes = {
+    channelId: React.PropTypes.string.isRequired,
+    link: React.PropTypes.string.isRequired
+};
diff --git a/web/react/stores/channel_store.jsx b/web/react/stores/channel_store.jsx
index afc960fcf..93d996e0b 100644
--- a/web/react/stores/channel_store.jsx
+++ b/web/react/stores/channel_store.jsx
@@ -18,7 +18,7 @@ class ChannelStoreClass extends EventEmitter {
     constructor(props) {
         super(props);
 
-        this.setMaxListeners(11);
+        this.setMaxListeners(15);
 
         this.emitChange = this.emitChange.bind(this);
         this.addChangeListener = this.addChangeListener.bind(this);