Screen-sharing broadcast + chat

Publisher side

by bistri

HTML

<link rel="stylesheet" href="https://netdna.bootstrapcdn.com/bootstrap/3.0.3/css/bootstrap.min.css">
<script src="https://api.bistri.com/bistri.conference-3.2.1.js"></script>
    <div class="pane" id="pane_1">
        <input type="text" placeholder="User name" id="nick_field"  value="Broadcaster" class="form-control">
        <br>
        <input type="button" value="Connect as broadcatser" id="nick" class="btn btn-info btn-default btn-block">
    </div>
   
    <div class="pane" id="pane_2" style="display: none">
        <div id="local-video"></div>
        <div style="margin:20px; text-align: left">
          Participants : 
          <ul id="users" ></ul>       
        </div>

        <div id="messages_container"></div>
        <p>
            <input type="text" placeholder="Message" id="message_field" class="form-control">
        </p>
        <input type="button" value="Send Message" id="send" class="btn btn-success btn-default btn-block">
        <input type="button" value="Quit" id="quit" class="btn btn-danger btn-default btn-block">
    </div>

CSS

.pane {
    margin: 20px;
    text-align: center;
}

.message {
    text-align: left;
}

#messages_container {
    height: 200px;
    overflow-y: auto;
    border: 1px solid #dedede;
    padding: 10px;
	  margin-top: 12px;
    margin-bottom: 2px;
}

video {
    width: 100%;
}

#local-video  {
    position: relative;
    margin: 0 auto;
    width: 100%;
    background-color: #c0c0c0;
}

JavaScript

/*
    JS library reference:
    http://developers.bistri.com/webrtc-sdk/js-library-reference
*/

var room = "_broadcast_test_chat";
var screenStream;
var audioStream;
var users = {};
var dataChannels = {};

onBistriConferenceReady = function ()
{
	if ( !bc.isCompatible() )
	{
  	alert ( "your browser is not WebRTC compatible !" );
    return;
  }
   
  bc.signaling.bind ( "onError", function ()
	{
    alert ( error.text + " (" + error.code + ")" );
  } );

  bc.signaling.bind ( "onConnected", function ()
	{
		showPanel( "pane_2" );
    
		bc.startStream( { audio: true, video:false }, function ( stream )
		{
			audioStream = stream;	
    
      bc.startStream( "screen-sharing:screen:5", function ( stream )
      {
        screenStream = stream;

        bc.attachStream ( stream, q( "#local-video" ), { fullscreen: true } );	
        bc.joinRoom( room );
      } );
    } );
  } );
     
  bc.signaling.bind( "onJoinedRoom", function ( data )
	{
    if ( isAudioRoom ( data.room ) )
    {
      data.members.forEach ( function ( member )
      {
        users[ member.id ] = member.name;
        bc.call ( member.id, room, { stream: screenStream, sendonly:true } );
        bc.openDataChannel ( member.id, "chat", room );
        bc.call ( member.id, room + '__audio', { stream: audioStream, sendonly:true } );
      } );
      
      refreshUsers ();
    }
    else
    {
      bc.joinRoom( data.room + '__audio' );
    }
  } );

  bc.signaling.bind ( "onJoinRoomError", function ( error )
	{
    alert( error.text + " (" + error.code + ")" );
  } );
       
  bc.signaling.bind( "onQuittedRoom", function ( data )
	{
    if ( isAudioRoom ( data.room ) )
    {
    	users = {};
      
 			refreshUsers ();
    
      q( "#messages_container" ).innerHTML = "";

      showPanel( "pane_1" );

      bc.detachStream ( screenStream );
        
      bc.stopStream ( screenStream, function ()
      {
        localStream = undefined;
      } );
        
      bc.stopStream ( audioStream,...