fix(large-video): do not show avatar if no url (#3871)

* fix(large-video): do not show avatar if no url

By default the large video dominant speaker avatar
has an empty src, which will result in a broken
image displaying. There is also disconnect with
non-react code trying to set an undefined src.
To prevent such until local avatar generation
work is done in the future, just don't show the
avatar.

* fix(conference): set the room instance earlier

Set the room instance on APP.conference before triggering
a redux update of the conference being set,, because
middleware can then fire and call methods on APP.conference
that depend on the room being set.

* get local participant directly from store instead of from global

conference.js

             = connection.initJitsiConference(
                 APP.conference.roomName,
                 this._getConferenceOptions());
+
         APP.store.dispatch(conferenceWillJoin(room));
         this._setLocalAudioVideoStreams(localTracks);
         this._room = room; // FIXME do not use this

css/_videolayout_default.scss

     display:none !important;
 }
 
+#dominantSpeakerAvatarContainer,
 #dominantSpeakerAvatar,
 .dynamic-shadow {
     width: 200px;
     height: 200px;
 }
 
-#dominantSpeakerAvatar {
+#dominantSpeakerAvatarContainer {
     top: 50px;
     margin: auto;
     position: relative;
     border-radius: 100px;
+    overflow: hidden;
     visibility: inherit;
+}
+#dominantSpeakerAvatar {
     background-color: #000000;
 }
 

modules/UI/videolayout/LargeVideoManager.js

 import { Provider } from 'react-redux';
 
 import { i18next } from '../../../react/features/base/i18n';
+import {
+    Avatar,
+    getAvatarURLByParticipantId
+} from '../../../react/features/base/participants';
 import { PresenceLabel } from '../../../react/features/presence-status';
 /* eslint-enable no-unused-vars */
 
 import {
     JitsiParticipantConnectionStatus
 } from '../../../react/features/base/lib-jitsi-meet';
-import {
-    getAvatarURLByParticipantId
-} from '../../../react/features/base/participants';
 import {
     updateKnownLargeVideoResolution
 } from '../../../react/features/large-video';
             = this._onVideoResolutionUpdate.bind(this);
 
         this.videoContainer.addResizeListener(this._onVideoResolutionUpdate);
+
+        this._dominantSpeakerAvatarContainer
+            = document.getElementById('dominantSpeakerAvatarContainer');
     }
 
     /**
 
         this.removePresenceLabel();
 
+        ReactDOM.unmountComponentAtNode(this._dominantSpeakerAvatarContainer);
+
         this.$container.css({ display: 'none' });
     }
 
      * Updates the src of the dominant speaker avatar
      */
     updateAvatar(avatarUrl) {
-        $('#dominantSpeakerAvatar').attr('src', avatarUrl);
+        if (avatarUrl) {
+            ReactDOM.render(
+                <Avatar
+                    id = "dominantSpeakerAvatar"
+                    uri = { avatarUrl } />,
+                this._dominantSpeakerAvatarContainer
+            );
+        } else {
+            ReactDOM.unmountComponentAtNode(
+                this._dominantSpeakerAvatarContainer);
+        }
     }
 
     /**

modules/UI/videolayout/VideoContainer.js

          */
         this.$wrapperParent = this.$wrapper.parent();
 
-        this.avatarHeight = $('#dominantSpeakerAvatar').height();
+        this.avatarHeight = $('#dominantSpeakerAvatarContainer').height();
 
         const onPlayingCallback = function(event) {
             if (typeof resizeContainer === 'function') {
      */
     _positionParticipantStatus($element) {
         if (this.avatarDisplayed) {
-            const $avatarImage = $('#dominantSpeakerAvatar');
+            const $avatarImage = $('#dominantSpeakerAvatarContainer');
 
             $element.css(
                 'top',

modules/UI/videolayout/VideoLayout.js

 } from '../../../react/features/base/lib-jitsi-meet';
 import { VIDEO_TYPE } from '../../../react/features/base/media';
 import {
+    getLocalParticipant as getLocalParticipantFromStore,
     getPinnedParticipant,
     pinParticipant
 } from '../../../react/features/base/participants';
     ];
 }
 
+/**
+ * Private helper to get the redux representation of the local participant.
+ *
+ * @private
+ * @returns {Object}
+ */
+function getLocalParticipant() {
+    return getLocalParticipantFromStore(APP.store.getState());
+}
+
 /**
  * Returns the user ID of the remote participant that is current the dominant
  * speaker.
     },
 
     changeLocalVideo(stream) {
-        const localId = APP.conference.getMyUserId();
+        const localId = getLocalParticipant().id;
 
         this.onVideoTypeChanged(localId, stream.videoType);
 
      */
     mucJoined() {
         if (largeVideo && !largeVideo.id) {
-            this.updateLargeVideo(APP.conference.getMyUserId(), true);
+            this.updateLargeVideo(getLocalParticipant().id, true);
         }
 
         // FIXME: replace this call with a generic update call once SmallVideo
         // Go with local video
         logger.info('Fallback to local video...');
 
-        const id = APP.conference.getMyUserId();
+        const { id } = getLocalParticipant();
 
         logger.info(`electLastVisibleVideo: ${id}`);
 

react/features/large-video/components/LargeVideo.web.js

 
                 <div id = 'dominantSpeaker'>
                     <div className = 'dynamic-shadow' />
-                    <img
-                        id = 'dominantSpeakerAvatar'
-                        src = '' />
+                    <div id = 'dominantSpeakerAvatarContainer' />
                 </div>
                 <div id = 'remotePresenceMessage' />
                 <span id = 'remoteConnectionMessage' />