diff --git a/app/CallManager.js b/app/CallManager.js
index 41180c2..f250bd6 100644
--- a/app/CallManager.js
+++ b/app/CallManager.js
@@ -1,413 +1,412 @@
 import events from 'events';
 import Logger from '../Logger';
 import uuid from 'react-native-uuid';
 import { Platform, PermissionsAndroid } from 'react-native';
 import utils from './utils';
 
 const logger = new Logger('CallManager');
 import { CONSTANTS as CK_CONSTANTS } from 'react-native-callkeep';
 
 // https://github.com/react-native-webrtc/react-native-callkeep
 
 /*
 const CONSTANTS = {
   END_CALL_REASONS: {
     FAILED: 1,
     REMOTE_ENDED: 2,
     UNANSWERED: 3,
     ANSWERED_ELSEWHERE: 4,
     DECLINED_ELSEWHERE: 5,
     MISSED: 6
   }
 };
 */
 
 const options = {
     ios: {
         appName: 'Sylk',
         maximumCallGroups: 1,
         maximumCallsPerCallGroup: 2,
         supportsVideo: true,
         includesCallsInRecents: true,
         imageName: "Image-1"
     },
     android: {
         alertTitle: 'Calling account permission',
         alertDescription: 'Please allow Sylk inside All calling accounts',
         cancelButton: 'Deny',
         okButton: 'Allow',
         imageName: 'phone_account_icon',
         additionalPermissions: [PermissionsAndroid.PERMISSIONS.CAMERA, PermissionsAndroid.PERMISSIONS.RECORD_AUDIO, PermissionsAndroid.PERMISSIONS.READ_CONTACTS]
     }
 };
 
 export default class CallManager extends events.EventEmitter {
     constructor(RNCallKeep, acceptFunc, rejectFunc, hangupFunc, timeoutFunc, conferenceCallFunc, startCallFromOutsideFunc) {
         //logger.debug('constructor()');
         super();
         this.setMaxListeners(Infinity);
 
         this._RNCallKeep = RNCallKeep;
 
         this._calls = new Map();
         this._conferences = new Map();
         this._rejectedCalls = new Map();
         this._alertedCalls = new Map();
 
         this._decideWhenWebSocketInviteArrives = new Map();
         this._timeouts = new Map();
 
         this.sylkAcceptCall = acceptFunc;
         this.sylkRejectCall = rejectFunc;
         this.sylkHangupCall = hangupFunc;
         this.timeoutCall = timeoutFunc;
         this.conferenceCall = conferenceCallFunc;
         this.startCallFromOutside = startCallFromOutsideFunc;
 
         this._boundRnAccept = this._rnAccept.bind(this);
         this._boundRnEnd = this._rnEnd.bind(this);
         this._boundRnMute = this._rnMute.bind(this);
         this._boundRnActiveAudioCall = this._rnActiveAudioSession.bind(this);
         this._boundRnDeactiveAudioCall = this._rnDeactiveAudioSession.bind(this);
         this._boundRnDTMF = this._rnDTMF.bind(this);
         this._boundRnProviderReset = this._rnProviderReset.bind(this);
         this.boundRnStartAction = this._startedCall.bind(this);
         this.boundRnDisplayIncomingCall = this._displayIncomingCall.bind(this);
 
         this._RNCallKeep.addEventListener('answerCall', this._boundRnAccept);
         this._RNCallKeep.addEventListener('endCall', this._boundRnEnd);
         this._RNCallKeep.addEventListener('didPerformSetMutedCallAction', this._boundRnMute);
         this._RNCallKeep.addEventListener('didActivateAudioSession', this._boundRnActiveAudioCall);
         this._RNCallKeep.addEventListener('didDeactivateAudioSession', this._boundRnDeactiveAudioCall.bind(this));
         this._RNCallKeep.addEventListener('didPerformDTMFAction', this._boundRnDTMF);
         this._RNCallKeep.addEventListener('didResetProvider', this._boundRnProviderReset);
         this._RNCallKeep.addEventListener('didReceiveStartCallAction', this.boundRnStartAction);
         this._RNCallKeep.addEventListener('didDisplayIncomingCall', this.boundRnDisplayIncomingCall);
 
         this._RNCallKeep.setup(options);
 
         this._RNCallKeep.addEventListener('checkReachability', () => {
             this._RNCallKeep.setReachable();
         });
     }
 
     get callKeep() {
         return this._RNCallKeep;
     }
 
     get count() {
         return this._calls.size;
     }
 
     get waitingCount() {
         return this._timeouts.size;
     }
 
     get callUUIDS() {
         return Array.from( this._calls.keys() );
     }
 
     get calls() {
         return [...this._calls.values()];
     }
 
     get activeCall() {
         for (let call of this.calls) {
             if (call.active) {
                 return call;
             }
         }
     }
 
     setAvailable(available) {
         this.callKeep.setAvailable(available);
     }
 
     backToForeground() {
        utils.timestampedLog('Callkeep: bring app to the foreground');
        this.callKeep.backToForeground();
     }
 
     setMutedCall(callUUID, mute) {
         utils.timestampedLog('Callkeep: set muted: ', mute);
         this.callKeep.setMutedCall(callUUID, mute);
     }
 
     startCall(callUUID, targetUri, targetName, hasVideo) {
         utils.timestampedLog('Callkeep: start outgoing call', callUUID);
         if (Platform.OS === 'ios') {
             this.callKeep.startCall(callUUID, targetUri, targetUri, 'email', hasVideo);
         } else if (Platform.OS === 'android') {
             this.callKeep.startCall(callUUID, targetUri, targetUri);
         }
     }
 
     updateDisplay(callUUID, displayName, uri) {
         utils.timestampedLog('Callkeep: update display', displayName, uri);
         this.callKeep.updateDisplay(callUUID, displayName, uri);
     }
 
     sendDTMF(callUUID, digits) {
         utils.timestampedLog('Callkeep: send DTMF: ', digits);
         this.callKeep.sendDTMF(callUUID, digits);
     }
 
     setCurrentCallActive(callUUID) {
         utils.timestampedLog('Callkeep: set call active', callUUID);
         this.callKeep.setCurrentCallActive(callUUID);
     }
 
     rejectCall(callUUID) {
         utils.timestampedLog('Callkeep: reject call', callUUID);
         this.callKeep.rejectCall(callUUID);
         this._rejectedCalls.set(callUUID, true);
     }
 
     endCalls() {
         utils.timestampedLog('Callkeep: end all calls');
         this.callKeep.endAllCalls();
     }
 
     endCall(callUUID, reason) {
         utils.timestampedLog('Callkeep: end call', callUUID, ' with reason', reason);
         if (reason) {
             this.callKeep.reportEndCallWithUUID(callUUID, reason);
         } else {
             this.callKeep.endCall(callUUID);
         }
         this._calls.delete(callUUID);
     }
 
     _rnActiveAudioSession() {
         utils.timestampedLog('Callkeep: activated audio call');
     }
 
     _rnDeactiveAudioSession() {
         utils.timestampedLog('Callkeep: deactivated audio call');
     }
 
     _rnAccept(data) {
         let callUUID = data.callUUID.toLowerCase();
         utils.timestampedLog('Callkeep: accept callback', callUUID);
         if (this._conferences.has(callUUID)) {
             let room = this._conferences.get(callUUID);
             utils.timestampedLog('Callkeep: accept incoming conference', callUUID);
             this.callKeep.endCall(callUUID);
             this._conferences.delete(callUUID);
 
             if (this._timeouts.has(callUUID)) {
                 clearTimeout(this._timeouts.get(callUUID));
                 this._timeouts.delete(callUUID);
             }
 
             utils.timestampedLog('Will start conference to', room);
             this.conferenceCall(room);
             // start an outgoing conference call
         } else if (this._calls.has(callUUID)) {
             this.sylkAcceptCall();
         } else {
             // We accepted the call before it arrived on web socket
             // from iOS push notifications
             this.backToForeground();
             this._decideWhenWebSocketInviteArrives.set(callUUID, 'accept');
         }
     }
 
     _rnEnd(data) {
         //get the uuid, find the call with that uuid and ccept it
         let callUUID = data.callUUID.toLowerCase();
         utils.timestampedLog('Callkeep: end callback', callUUID);
         if (this._conferences.has(callUUID)) {
             utils.timestampedLog('Callkeep: reject conference invite', callUUID);
             let room = this._conferences.get(callUUID);
             this.callKeep.endCall(callUUID);
             this._conferences.delete(callUUID);
 
             if (this._timeouts.has(callUUID)) {
                 clearTimeout(this._timeouts.get(callUUID));
                 this._timeouts.delete(callUUID);
             }
 
         } else if (this._calls.has(callUUID)) {
             utils.timestampedLog('Callkeep: hangup call', callUUID);
             let call = this._calls.get(callUUID);
             if (call.state === 'incoming') {
                 this.sylkRejectCall(callUUID);
             } else {
                 this.sylkHangupCall(callUUID);
             }
         } else {
             // We rejected the call before it arrived on web socket
             // from iOS push notifications
             utils.timestampedLog('Callkeep: add call', callUUID, 'to the waitings list');
             this._decideWhenWebSocketInviteArrives.set(callUUID, 'reject');
             this._rejectedCalls.set(callUUID, true);
 
         }
     }
 
     _rnMute(data) {
         utils.timestampedLog('Callkeep: mute ' + data.muted + ' for call', data.callUUID);
         //get the uuid, find the call with that uuid and mute/unmute it
         if (this._calls.has(data.callUUID.toLowerCase())) {
             let call = this._calls.get(data.callUUID.toLowerCase());
             const localStream = call.getLocalStreams()[0];
             localStream.getAudioTracks()[0].enabled = !data.muted;
         }
     }
 
     _rnDTMF(data) {
         utils.timestampedLog('Callkeep: got dtmf for call', data.callUUID);
         if (this._calls.has(data.callUUID.toLowerCase())) {
             let call = this._calls.get(data.callUUID.toLowerCase());
             utils.timestampedLog('sending webrtc dtmf', data.digits)
             call.sendDtmf(data.digits);
         }
     }
 
     _rnProviderReset() {
         utils.timestampedLog('Callkeep: got a provider reset, clearing down all calls');
         this._calls.forEach((call) => {
             call.terminate();
         })
     }
 
     handleIncomingPushCall(callUUID, notificationContent) {
         // call is received by push notification
         if (this._calls.has(callUUID)) {
             utils.timestampedLog('Callkeep: call', callUUID, 'already handled');
             return;
         }
 
         if (this._rejectedCalls.has(callUUID)) {
             this.callKeep.reportEndCallWithUUID(callUUID, CK_CONSTANTS.END_CALL_REASONS.UNANSWERED);
             return;
         }
 
         utils.timestampedLog('Callkeep: handle later incoming call', callUUID);
 
         let reason = this._decideWhenWebSocketInviteArrives.has(callUUID) ? CK_CONSTANTS.END_CALL_REASONS.FAILED : CK_CONSTANTS.END_CALL_REASONS.UNANSWERED;
 
         // if user does not decide anything this will be handled later
         this._timeouts.set(callUUID, setTimeout(() => {
             utils.timestampedLog('Callkeep: end call later', callUUID);
             this.callKeep.reportEndCallWithUUID(callUUID, reason);
             this._timeouts.delete(callUUID);
         }, 45000));
     }
 
     handleIncomingWebSocketCall(call) {
         call._callkeepUUID = call.id;
 
         this._calls.set(call._callkeepUUID, call);
         utils.timestampedLog('Callkeep: start incoming call', call._callkeepUUID);
 
         if (this._timeouts.has(call.id)) {
             clearTimeout(this._timeouts.get(call.id));
             this._timeouts.delete(call.id);
         }
 
         // if the call came via push and was already accepted or rejected
         if (this._decideWhenWebSocketInviteArrives.get(call._callkeepUUID)) {
             let action = this._decideWhenWebSocketInviteArrives.get(call._callkeepUUID);
             utils.timestampedLog('Callkeep: execute action', action);
             if (action === 'accept') {
                 this.sylkAcceptCall(call.id);
             } else {
                 this.sylkRejectCall(call.id);
             }
             this._decideWhenWebSocketInviteArrives.delete(call._callkeepUUID);
         } else if (this._rejectedCalls.has(call._callkeepUUID)) {
             this.sylkRejectCall(call.id);
         } else {
             this.showAlertPanel(call);
         }
 
         // Emit event.
         this._emitSessionsChange(true);
     }
 
     handleOutgoingCall(call, callUUID) {
         // this is an outgoing call
         call._callkeepUUID = callUUID;
         this._calls.set(call._callkeepUUID, call);
         utils.timestampedLog('Callkeep: start outgoing call', call._callkeepUUID);
 
         // Emit event.
         this._emitSessionsChange(true);
     }
 
     handleConference(callUUID, room, from_uri) {
         if (this._conferences.has(callUUID)) {
             return;
         }
 
         utils.timestampedLog('CallKeep: handle conference', callUUID, 'from', from_uri, 'to room', room);
         this._conferences.set(callUUID, room);
         this.showConferenceAlertPanel(callUUID, from_uri);
 
         // there is no cancel, so we add a timer
         this._timeouts.set(callUUID, setTimeout(() => {
             utils.timestampedLog('Callkeep: conference timeout', callUUID);
             this.timeoutCall(callUUID, from_uri);
             this.callKeep.reportEndCallWithUUID(callUUID, CK_CONSTANTS.END_CALL_REASONS.MISSED);
             this._timeouts.delete(callUUID);
         }, 45000));
 
         this._emitSessionsChange(true);
     }
 
     showConferenceAlertPanel(callUUID, uri) {
-        //uri = uri.toString();
         utils.timestampedLog('Callkeep: show alert panel for conference', callUUID, 'from', uri);
 
         if (Platform.OS === 'ios') {
             this.callKeep.displayIncomingCall(callUUID, uri, uri, 'email', true);
         } else if (Platform.OS === 'android') {
             this.callKeep.displayIncomingCall(callUUID, uri, uri);
         }
     }
 
    _startedCall(data) {
         utils.timestampedLog("Callkeep: started call from outside");
         console.log(data);
         this.startCallFromOutside(data);
     }
 
     _displayIncomingCall(data) {
         utils.timestampedLog('Incoming alert panel displayed');
         this._alertedCalls.set(data.callUUID.toLowerCase(), true);
     }
 
     showAlertPanel(call) {
         if (this._alertedCalls.has(call._callkeepUUID)) {
             utils.timestampedLog('Callkeep: alert panel was already shown for call', call._callkeepUUID);
             return;
         }
 
         utils.timestampedLog('Callkeep: show alert panel for call', call._callkeepUUID);
 
         if (Platform.OS === 'ios') {
             this.callKeep.displayIncomingCall(call._callkeepUUID, call.remoteIdentity.uri, call.remoteIdentity.displayName, 'email', call.mediaTypes.video);
         } else if (Platform.OS === 'android') {
             this.callKeep.displayIncomingCall(call._callkeepUUID, call.remoteIdentity.uri, call.remoteIdentity.displayName);
         }
     }
 
     _emitSessionsChange(countChanged) {
         this.emit('sessionschange', countChanged);
     }
 
     destroy() {
         this._RNCallKeep.removeEventListener('acceptCall', this._boundRnAccept);
         this._RNCallKeep.removeEventListener('endCall', this._boundRnEnd);
         this._RNCallKeep.removeEventListener('didPerformSetMutedCallAction', this._boundRnMute);
         this._RNCallKeep.removeEventListener('didActivateAudioSession',  this._boundRnActiveAudioCall);
         this._RNCallKeep.removeEventListener('didDeactivateAudioSession', this._boundRnDeactiveAudioCall);
         this._RNCallKeep.removeEventListener('didPerformDTMFAction', this._boundRnDTMF);
         this._RNCallKeep.removeEventListener('didResetProvider', this._boundRnProviderReset);
         this._RNCallKeep.removeEventListener('didReceiveStartCallAction', this.boundRnStartAction);
         this._RNCallKeep.removeEventListener('didDisplayIncomingCall', this.boundRnDisplayIncomingCall);
 
     }
 }
diff --git a/app/components/ConferenceBox.js b/app/components/ConferenceBox.js
index 81a3ef5..ee8fce5 100644
--- a/app/components/ConferenceBox.js
+++ b/app/components/ConferenceBox.js
@@ -1,732 +1,732 @@
 'use strict';
 
 import React, {Component, Fragment} from 'react';
 import { View, Platform } from 'react-native';
 import PropTypes from 'prop-types';
 import * as sylkrtc from 'sylkrtc';
 import classNames from 'classnames';
 import debug from 'react-native-debug';
 import superagent from 'superagent';
 import autoBind from 'auto-bind';
 import { RTCView } from 'react-native-webrtc';
 import { IconButton, Appbar, Portal, Modal, Surface, Paragraph } from 'react-native-paper';
 
 import config from '../config';
 import utils from '../utils';
 //import AudioPlayer from './AudioPlayer';
 import ConferenceDrawer from './ConferenceDrawer';
 import ConferenceDrawerLog from './ConferenceDrawerLog';
 // import ConferenceDrawerFiles from './ConferenceDrawerFiles';
 import ConferenceDrawerParticipant from './ConferenceDrawerParticipant';
 import ConferenceDrawerParticipantList from './ConferenceDrawerParticipantList';
 import ConferenceDrawerSpeakerSelection from './ConferenceDrawerSpeakerSelection';
 import ConferenceHeader from './ConferenceHeader';
 import ConferenceCarousel from './ConferenceCarousel';
 import ConferenceParticipant from './ConferenceParticipant';
 import ConferenceMatrixParticipant from './ConferenceMatrixParticipant';
 import ConferenceParticipantSelf from './ConferenceParticipantSelf';
 import InviteParticipantsModal from './InviteParticipantsModal';
 
 import styles from '../assets/styles/blink/_ConferenceBox.scss';
 
 const DEBUG = debug('blinkrtc:ConferenceBox');
 debug.enable('*');
 
 class ConferenceBox extends Component {
     constructor(props) {
         super(props);
         autoBind(this);
         this.state = {
             callOverlayVisible: true,
             audioMuted: false,
             videoMuted: false,
-            participants: props.call.participants.slice(),
+            participants: [],
             showInviteModal: false,
             showDrawer: false,
             showFiles: false,
             shareOverlayVisible: false,
-            activeSpeakers: props.call.activeParticipants.slice(),
+            activeSpeakers: [],
             selfDisplayedLarge: false,
             eventLog: [],
-            sharedFiles: props.call.sharedFiles.slice(),
+            sharedFiles: [],
             largeVideoStream: null
         };
 
         const friendlyName = this.props.remoteUri.split('@')[0];
         //if (window.location.origin.startsWith('file://')) {
             this.callUrl = `${config.publicUrl}/conference/${friendlyName}`;
         //} else {
         //    this.callUrl = `${window.location.origin}/conference/${friendlyName}`;
         //}
 
         const emailMessage  = `You can join me in the conference using a Web browser at ${this.callUrl} ` +
                              'or by using the freely available Sylk WebRTC client app at http://sylkserver.com';
         const subject       = 'Join me, maybe?';
 
         this.emailLink = `mailto:?subject=${encodeURI(subject)}&body=${encodeURI(emailMessage)}`;
 
         this.overlayTimer = null;
         this.logEvent = {};
         this.haveVideo = false;
         this.uploads = [];
 
         [
             'error',
             'warning',
             'info',
             'debug'
         ].forEach((level) => {
             this.logEvent[level] = (
                 (action, messages, originator) => {
-                    const log = this.state.eventLog.slice();
+                    const log = this.state.eventLog;
                     log.unshift({originator, originator, level: level, action: action, messages: messages});
                     this.setState({eventLog: log});
                 }
             );
         });
     }
 
     componentDidMount() {
         for (let p of this.state.participants) {
             p.on('stateChanged', this.onParticipantStateChanged);
             p.attach();
         }
         this.props.call.on('participantJoined', this.onParticipantJoined);
         this.props.call.on('participantLeft', this.onParticipantLeft);
         this.props.call.on('roomConfigured', this.onConfigureRoom);
         this.props.call.on('fileSharing', this.onFileSharing);
 
         this.armOverlayTimer();
 
         // attach to ourselves first if there are no other participants
         if (this.state.participants.length === 0) {
             setTimeout(() => {
                 const item = {
                     stream: this.props.call.getLocalStreams()[0],
                     identity: this.props.call.localIdentity
                 };
                 this.selectVideo(item);
             });
         } else {
             // this.changeResolution();
         }
 
         if (this.props.call.getLocalStreams()[0].getVideoTracks().length !== 0) {
             this.haveVideo = true;
         }
     }
 
     componentWillUnmount() {
         clearTimeout(this.overlayTimer);
         this.uploads.forEach((upload) => {
             this.props.notificationCenter().removeNotification(upload[1]);
             upload[0].abort();
         })
     }
 
     onParticipantJoined(p) {
         DEBUG(`Participant joined: ${p.identity}`);
         if (p.identity._uri.search('guest.') === -1) {
             // used for history item
             this.props.saveParticipant(this.props.call.id, this.props.remoteUri.split('@')[0], p.identity._uri);
         }
         // this.refs.audioPlayerParticipantJoined.play();
         p.on('stateChanged', this.onParticipantStateChanged);
         p.attach();
         this.setState({
             participants: this.state.participants.concat([p])
         });
         // this.changeResolution();
     }
 
     onParticipantLeft(p) {
         DEBUG(`Participant left: ${p.identity}`);
         // this.refs.audioPlayerParticipantLeft.play();
-        const participants = this.state.participants.slice();
+        const participants = this.state.participants;
         const idx = participants.indexOf(p);
         if (idx !== -1) {
             participants.splice(idx, 1);
             this.setState({
                 participants: participants
             });
         }
         p.detach(true);
         // this.changeResolution();
     }
 
     onParticipantStateChanged(oldState, newState) {
         if (newState === 'established' || newState === null) {
             this.maybeSwitchLargeVideo();
         }
     }
 
     onConfigureRoom(config) {
         const newState = {};
         newState.activeSpeakers = config.activeParticipants;
         this.setState(newState);
 
         if (config.activeParticipants.length === 0) {
             this.logEvent.info('set speakers to', ['Nobody'], config.originator);
         } else {
             const speakers = config.activeParticipants.map((p) => {return p.identity.displayName || p.identity.uri});
             this.logEvent.info('set speakers to', speakers, config.originator);
         }
         this.maybeSwitchLargeVideo();
     }
 
     onFileSharing(files) {
-        let stateFiles = this.state.sharedFiles.slice();
+        let stateFiles = this.state.sharedFiles;
         stateFiles = stateFiles.concat(files);
         this.setState({sharedFiles: stateFiles});
         files.forEach((file)=>{
             if (file.session !== this.props.call.id) {
                 this.props.notificationCenter().postFileShared(file, this.showFiles);
             }
         })
     }
 
     changeResolution() {
         let stream = this.props.call.getLocalStreams()[0];
         if (this.state.participants.length < 2) {
             this.props.call.scaleLocalTrack(stream, 1.5);
         } else if (this.state.participants.length < 5) {
             this.props.call.scaleLocalTrack(stream, 2);
         } else {
             this.props.call.scaleLocalTrack(stream, 1);
         }
     }
 
     selectVideo(item) {
         DEBUG('Switching video to: %o', item);
         if (item.stream) {
             this.setState({selfDisplayedLarge: true, largeVideoStream: item.stream});
         }
     }
 
     maybeSwitchLargeVideo() {
         // Switch the large video to another source, maybe.
         if (this.state.participants.length === 0 && !this.state.selfDisplayedLarge) {
             // none of the participants are eligible, show ourselves
             const item = {
                 stream: this.props.call.getLocalStreams()[0],
                 identity: this.props.call.localIdentity
             };
             this.selectVideo(item);
         } else if (this.state.selfDisplayedLarge) {
             this.setState({selfDisplayedLarge: false});
         }
     }
 
     handleClipboardButton() {
         utils.copyToClipboard(this.callUrl);
         this.props.notificationCenter().postSystemNotification('Join me, maybe?', {body: 'Link copied to the clipboard'});
         this.setState({shareOverlayVisible: false});
     }
 
     handleEmailButton(event) {
         // if (navigator.userAgent.indexOf('Chrome') > 0) {
         //     let emailWindow = window.open(this.emailLink, '_blank');
         //     setTimeout(() => {
         //         emailWindow.close();
         //     }, 500);
         // } else {
         //     window.open(this.emailLink, '_self');
         // }
         this.setState({shareOverlayVisible: false});
     }
 
     handleShareOverlayEntered() {
         this.setState({shareOverlayVisible: true});
     }
 
     handleShareOverlayExited() {
         this.setState({shareOverlayVisible: false});
     }
 
     handleActiveSpeakerSelected(participant, secondVideo=false) {      // eslint-disable-line space-infix-ops
-        let newActiveSpeakers = this.state.activeSpeakers.slice();
+        let newActiveSpeakers = this.state.activeSpeakers;
         if (secondVideo) {
             if (participant.id !== 'none') {
                 if (newActiveSpeakers.length >= 1) {
                     newActiveSpeakers[1] = participant;
                 } else {
                     newActiveSpeakers[0] = participant;
                 }
             } else {
                 newActiveSpeakers.splice(1,1);
             }
         } else {
             if (participant.id !== 'none') {
                 newActiveSpeakers[0] = participant;
             } else {
                 newActiveSpeakers.shift();
             }
         }
         this.props.call.configureRoom(newActiveSpeakers.map((element) => element.publisherId), (error) => {
             if (error) {
                 // This causes a state update, hence the drawer lists update
                 this.logEvent.error('set speakers failed', [], this.localIdentity);
             }
         });
     }
 
     handleDrop(files) {
         DEBUG('Dropped file %o', files);
         this.uploadFiles(files);
     };
 
     handleFiles(e) {
         DEBUG('Selected files %o', e.target.files);
         this.uploadFiles(e.target.files);
         event.target.value = '';
     }
 
     uploadFiles(files) {
         for (var key in files) {
             // is the item a File?
             if (files.hasOwnProperty(key) && files[key] instanceof File) {
                 let uploadRequest;
                 let complete = false;
                 const filename = files[key].name
                 let progressNotification = this.props.notificationCenter().postFileUploadProgress(
                     filename,
                     (notification) => {
                         if (!complete) {
                             uploadRequest.abort();
                             this.uploads.splice(this.uploads.indexOf(uploadRequest), 1);
                         }
                     }
                 );
                 uploadRequest = superagent
                 .post(`${config.fileSharingUrl}/${this.props.remoteUri}/${this.props.call.id}/${filename}`)
                 .send(files[key])
                 .on('progress', (e) => {
                     this.props.notificationCenter().editFileUploadNotification(e.percent, progressNotification);
                 })
                 .end((err, response) => {
                     complete = true;
                     this.props.notificationCenter().removeFileUploadNotification(progressNotification);
                     if (err) {
                         this.props.notificationCenter().postFileUploadFailed(filename);
                     }
                     this.uploads.splice(this.uploads.indexOf(uploadRequest), 1);
                 });
                 this.uploads.push([uploadRequest, progressNotification]);
             }
         }
     }
 
     downloadFile(filename) {
         // const a = document.createElement('a');
         // a.href = `${config.fileSharingUrl}/${this.props.remoteUri}/${this.props.call.id}/${filename}`;
         // a.target = '_blank';
         // a.download = filename;
         // const clickEvent = document.createEvent('MouseEvent');
         // clickEvent.initMouseEvent('click', true, true, window, 0,
         //     clickEvent.screenX, clickEvent.screenY, clickEvent.clientX, clickEvent.clientY,
         //     clickEvent.ctrlKey, clickEvent.altKey, clickEvent.shiftKey, clickEvent.metaKey,
         //     0, null);
         // a.dispatchEvent(clickEvent);
     }
 
     preventOverlay(event) {
         // Stop the overlay when we are the thumbnail bar
         event.stopPropagation();
     }
 
     muteAudio(event) {
         event.preventDefault();
         const localStream = this.props.call.getLocalStreams()[0];
         if (localStream.getAudioTracks().length > 0) {
             const track = localStream.getAudioTracks()[0];
             if(this.state.audioMuted) {
                 DEBUG('Unmute microphone');
                 track.enabled = true;
                 this.setState({audioMuted: false});
             } else {
                 DEBUG('Mute microphone');
                 track.enabled = false;
                 this.setState({audioMuted: true});
             }
         }
     }
 
     toggleCamera(event) {
         event.preventDefault();
         const localStream = this.props.call.getLocalStreams()[0];
         if (localStream.getVideoTracks().length > 0) {
             const track = localStream.getVideoTracks()[0];
             track._switchCamera();
         }
     }
 
     muteVideo(event) {
         event.preventDefault();
         const localStream = this.props.call.getLocalStreams()[0];
         if (localStream.getVideoTracks().length > 0) {
             const track = localStream.getVideoTracks()[0];
             if (this.state.videoMuted) {
                 DEBUG('Unmute camera');
                 track.enabled = true;
                 this.setState({videoMuted: false});
             } else {
                 DEBUG('Mute camera');
                 track.enabled = false;
                 this.setState({videoMuted: true});
             }
         }
     }
 
     hangup(event) {
         event.preventDefault();
         for (let participant of this.state.participants) {
             participant.detach();
         }
         this.props.hangup();
     }
 
     armOverlayTimer() {
         clearTimeout(this.overlayTimer);
         this.overlayTimer = setTimeout(() => {
             this.setState({callOverlayVisible: false});
         }, 4000);
     }
 
     showOverlay() {
         // if (!this.state.shareOverlayVisible && !this.state.showDrawer && !this.state.showFiles) {
         //     if (!this.state.callOverlayVisible) {
         //         this.setState({callOverlayVisible: true});
         //     }
         //     this.armOverlayTimer();
         // }
     }
 
     toggleInviteModal() {
         this.setState({showInviteModal: !this.state.showInviteModal});
     }
 
     toggleDrawer() {
         this.setState({callOverlayVisible: true, showDrawer: !this.state.showDrawer, showFiles: false});
         clearTimeout(this.overlayTimer);
     }
 
     toggleFiles() {
         this.setState({callOverlayVisible: true, showFiles: !this.state.showFiles, showDrawer: false});
         clearTimeout(this.overlayTimer);
     }
 
     showFiles() {
         this.setState({callOverlayVisible: true, showFiles: true, showDrawer: false});
         clearTimeout(this.overlayTimer);
     }
 
     inviteParticipants(uris) {
         console.log('Invite participants', uris);
         this.props.saveInvitedParties(this.props.call.id, this.props.remoteUri.split('@')[0], uris);
         this.props.call.inviteParticipants(uris);
     }
 
     render() {
         if (this.props.call === null) {
             return (<View></View>);
         }
 
         let watermark;
 
         const largeVideoClasses = classNames({
             'animated'      : true,
             'fadeIn'        : true,
             'large'         : true,
             'mirror'        : !this.props.call.sharingScreen && !this.props.generatedVideoTrack,
             'fit'           : this.props.call.sharingScreen
         });
 
         let matrixClasses = classNames({
             'matrix'        : true
         });
 
         const containerClasses = classNames({
             'video-container': true,
             'conference': true,
             'drawer-visible': this.state.showDrawer || this.state.showFiles
         });
 
         const remoteUri = this.props.remoteUri.split('@')[0];
 
         // const shareOverlay = (
         //     <Portal>
         //         <Modal>
         //             <Surface>
         //                 <Paragraph>
         //                     Invite other online users of this service, share <strong><a href={this.callUrl} target="_blank" rel="noopener noreferrer">this link</a></strong> with others or email, so they can easily join this conference.
         //                 </Paragraph>
         //                 <View className="text-center">
         //                     <View className="btn-group">
         //                         <IconButton
         //                             size={30}
         //                             onPress={this.toggleInviteModal}
         //                             icon="account-plus"
         //                         />
         //                         <IconButton className="btn btn-primary" onPress={this.handleClipboardButton} icon="copy" />
         //                         <IconButton className="btn btn-primary" onPress={this.handleEmailButton} alt="Send email" icon="email" />
         //                     </View>
         //                 </View>
         //             </Surface>
         //         </Modal>
         //     </Portal>
         // );
 
         const buttons = {};
 
         // const commonButtonTopClasses = classNames({
         //     'btn'           : true,
         //     'btn-link'      : true
         // });
 
         // const fullScreenButtonIcons = classNames({
         //     'fa'            : true,
         //     'fa-2x'         : true,
         //     'fa-expand'     : !this.isFullScreen(),
         //     'fa-compress'   : this.isFullScreen()
         // });
 
         const topButtons = [];
 
         // if (!this.state.showFiles) {
         //     if (this.state.sharedFiles.length !== 0) {
         //         topButtons.push(
         //             <Badge badgeContent={this.state.sharedFiles.length} color="primary" classes={{badge: this.props.classes.badge}}>
         //                 <button key="fbButton" type="button" title="Open Drawer" className={commonButtonTopClasses} onPress={this.toggleFiles}> <i className="fa fa-files-o fa-2x"></i> </button>
         //             </Badge>
         //         );
         //     }
         // }
 
         if (!this.state.showDrawer) {
             topButtons.push(<Appbar.Action key="sbButton" title="Open Drawer" onPress={this.toggleDrawer} icon="menu" />);
         }
 
         buttons.top = {right: topButtons};
 
         const muteButtonIcons = this.state.audioMuted ? 'microphone-off' : 'microphone';
         const muteVideoButtonIcons = this.state.videoMuted ? 'video-off' : 'video';
         const buttonClass = (Platform.OS === 'ios') ? styles.iosButton : styles.androidButton;
 
         const bottomButtons = [];
         bottomButtons.push(
             <IconButton
                 size={30}
                 style={buttonClass}
                 title="Share link to this conference"
                 icon="account-plus"
                 onPress={this.toggleInviteModal}
             />
         );
         if (this.haveVideo) {
             bottomButtons.push(
                 <IconButton
                     size={30}
                     style={buttonClass}
                     title="Mute/unmute video"
                     onPress={this.muteVideo}
                     icon={muteVideoButtonIcons}
                 />
             );
         }
         bottomButtons.push(
             <IconButton
                 size={30}
                 style={buttonClass}
                 title="Mute/unmute audio"
                 onPress={this.muteAudio}
                 icon={muteButtonIcons}
             />
         );
         if (this.haveVideo) {
             bottomButtons.push(
                 <IconButton
                     size={30}
                     style={buttonClass}
                     title="Toggle camera"
                     onPress={this.toggleCamera}
                     icon='video-switch'
                 />
             );
         }
         bottomButtons.push(
             <IconButton
                 size={30}
                 style={buttonClass}
                 icon={this.props.speakerPhoneEnabled ? 'volume-high' : 'volume-off'}
                 onPress={this.props.toggleSpeakerPhone}
             />
         )
         // bottomButtons.push(
         //     <View key="shareFiles">
         //         <IconButton size={30} style={buttonClass} title="Share files" component="span" disableRipple={true} icon="upload"/>
         //     </View>
         // );
 
         bottomButtons.push(
             <IconButton
                 size={30}
                 style={[buttonClass, styles.hangupButton]}
                 title="Leave conference"
                 onPress={this.hangup}
                 icon="phone-hangup"
             />
         );
         buttons.bottom = bottomButtons;
 
         const participants = [];
 
         if (this.state.participants.length > 0) {
             if (this.state.activeSpeakers.findIndex((element) => {return element.id === this.props.call.id}) === -1) {
                 participants.push(
                     <ConferenceParticipantSelf
                         key="myself2"
                         stream={this.props.call.getLocalStreams()[0]}
                         identity={this.props.call.localIdentity}
                         audioMuted={this.state.audioMuted}
                         generatedVideoTrack={this.props.generatedVideoTrack}
                     />
                 );
             }
         }
 
         const drawerParticipants = [];
         drawerParticipants.push(
             <ConferenceDrawerParticipant
                 key="myself1"
                 participant={{identity: this.props.call.localIdentity}}
                 isLocal={true}
             />
         );
 
         let videos = [];
         if (this.state.participants.length === 0) {
             videos.push(
                 <RTCView objectFit="cover" style={styles.wholePageVideo} ref="largeVideo" poster="assets/images/transparent-1px.png" streamURL={this.state.largeVideoStream ? this.state.largeVideoStream.toURL() : null} />
             );
         } else {
             const activeSpeakers = this.state.activeSpeakers;
             const activeSpeakersCount = activeSpeakers.length;
 
             if (activeSpeakersCount > 0) {
                 activeSpeakers.forEach((p) => {
                     videos.push(
                         <ConferenceMatrixParticipant
                             key={p.id}
                             participant={p}
                             large={activeSpeakers.length <= 1}
                             isLocal={p.id === this.props.call.id}
                         />
                     );
                 });
 
                 this.state.participants.forEach((p) => {
                     if (this.state.activeSpeakers.indexOf(p) === -1) {
                         participants.push(
                             <ConferenceParticipant
                                 key={p.id}
                                 participant={p}
                                 selected={this.onVideoSelected}
                             />
                         );
                     }
 
                     drawerParticipants.push(
                         <ConferenceDrawerParticipant
                             key={p.id}
                             participant={p}
                         />
                     );
                 });
             } else {
 
                 this.state.participants.forEach((p) => {
                     videos.push(
                         <ConferenceMatrixParticipant
                             key = {p.id}
                             participant = {p}
                             large = {this.state.participants.length <= 1}
                         />
                     );
 
                     drawerParticipants.push(
                         <ConferenceDrawerParticipant
                             key={p.id}
                             participant={p}
                         />
                     );
                 });
             }
         }
 
         // let filesDrawerContent = (
         //     <ConferenceDrawerFiles
         //         sharedFiles={this.state.sharedFiles}
         //         downloadFile={this.downloadFile}
         //     />
         // );
 
         return (
             <View style={styles.container}>
                 <ConferenceHeader
                     show={true}
                     remoteUri={remoteUri}
                     participants={this.state.participants}
                     buttons={buttons}
                 />
                 <View style={styles.conferenceContainer}>
                     <View style={styles.videosContainer}>
                         {videos}
                     </View>
                     <View style={styles.carouselContainer}>
                         <ConferenceCarousel align={'right'}>
                             {participants}
                         </ConferenceCarousel>
                     </View>
                 </View>
 
                 <InviteParticipantsModal
                     show={this.state.showInviteModal}
                     inviteParticipants={this.inviteParticipants}
                     previousParticipants={this.props.previousParticipants}
                     close={this.toggleInviteModal}
                     room={this.props.remoteUri.split('@')[0]}
                 />
 
                 <ConferenceDrawer
                     show={this.state.showDrawer}
                     close={this.toggleDrawer}
                 >
                     <ConferenceDrawerSpeakerSelection
                         participants={this.state.participants.concat([{id: this.props.call.id, publisherId: this.props.call.id, identity: this.props.call.localIdentity}])}
                         selected={this.handleActiveSpeakerSelected}
                         activeSpeakers={this.state.activeSpeakers}
                     />
                     <ConferenceDrawerParticipantList>
                         {drawerParticipants}
                     </ConferenceDrawerParticipantList>
                     <ConferenceDrawerLog log={this.state.eventLog} />
                 </ConferenceDrawer>
             </View>
         );
     }
 }
 
 ConferenceBox.propTypes = {
     notificationCenter  : PropTypes.func.isRequired,
     call                : PropTypes.object,
     hangup              : PropTypes.func,
     saveParticipant     : PropTypes.func,
     saveInvitedParties  : PropTypes.func,
     previousParticipants: PropTypes.array,
     remoteUri           : PropTypes.string,
     generatedVideoTrack : PropTypes.bool,
     toggleSpeakerPhone  : PropTypes.func,
     speakerPhoneEnabled : PropTypes.bool
 };
 
 export default ConferenceBox;