Adds a last-n user interface. Some code restructuring related to last-n and stream reception/deletion. Adds a contact list user interface.

app.js

 var roomUrl = null;
 var roomName = null;
 var ssrc2jid = {};
+var mediaStreams = [];
+
 /**
  * The stats collector that process stats data and triggers updates to app.js.
  * @type {StatsCollector}
     connection.emuc.doJoin(roomjid);
 }
 
-$(document).bind('remotestreamadded.jingle', function (event, data, sid) {
-    function waitForRemoteVideo(selector, sid, ssrc) {
-        if (selector.removed) {
-            console.warn("media removed before had started", selector);
-            return;
-        }
-        var sess = connection.jingle.sessions[sid];
-        if (data.stream.id === 'mixedmslabel') return;
-        var videoTracks = data.stream.getVideoTracks();
-//        console.log("waiting..", videoTracks, selector[0]);
-
-        if (videoTracks.length === 0 || selector[0].currentTime > 0) {
-            RTC.attachMediaStream(selector, data.stream); // FIXME: why do i have to do this for FF?
-
-            // FIXME: add a class that will associate peer Jid, video.src, it's ssrc and video type
-            //        in order to get rid of too many maps
-            if (ssrc) {
-                videoSrcToSsrc[sel.attr('src')] = ssrc;
-            } else {
-                console.warn("No ssrc given for video", sel);
-            }
+function waitForRemoteVideo(selector, ssrc, stream) {
+    if (selector.removed || !selector.parent().is(":visible")) {
+        console.warn("Media removed before had started", selector);
+        return;
+    }
+
+    if (stream.id === 'mixedmslabel') return;
 
-            $(document).trigger('callactive.jingle', [selector, sid]);
-            console.log('waitForremotevideo', sess.peerconnection.iceConnectionState, sess.peerconnection.signalingState);
+    if (selector[0].currentTime > 0) {
+        RTC.attachMediaStream(selector, stream); // FIXME: why do i have to do this for FF?
+
+        // FIXME: add a class that will associate peer Jid, video.src, it's ssrc and video type
+        //        in order to get rid of too many maps
+        if (ssrc && selector.attr('src')) {
+            videoSrcToSsrc[selector.attr('src')] = ssrc;
         } else {
-            setTimeout(function () { waitForRemoteVideo(selector, sid, ssrc); }, 250);
+            console.warn("No ssrc given for video", selector);
         }
+
+        $(document).trigger('videoactive.jingle', [selector]);
+    } else {
+        setTimeout(function () {
+            waitForRemoteVideo(selector, ssrc, stream);
+            }, 250);
     }
+}
+
+$(document).bind('remotestreamadded.jingle', function (event, data, sid) {
     var sess = connection.jingle.sessions[sid];
 
     var thessrc;
     // look up an associated JID for a stream id
     if (data.stream.id.indexOf('mixedmslabel') === -1) {
-        var ssrclines = SDPUtil.find_lines(sess.peerconnection.remoteDescription.sdp, 'a=ssrc');
+        var ssrclines
+            = SDPUtil.find_lines(sess.peerconnection.remoteDescription.sdp, 'a=ssrc');
         ssrclines = ssrclines.filter(function (line) {
             return line.indexOf('mslabel:' + data.stream.label) !== -1;
         });
         }
     }
 
+    mediaStreams.push(new MediaStream(data, sid, thessrc));
+
     var container;
     var remotes = document.getElementById('remoteVideos');
 
     if (data.peerjid) {
         VideoLayout.ensurePeerContainerExists(data.peerjid);
+
         container  = document.getElementById(
                 'participant_' + Strophe.getResourceFromJid(data.peerjid));
     } else {
         }
         // FIXME: for the mixed ms we dont need a video -- currently
         container = document.createElement('span');
+        container.id = 'mixedstream';
         container.className = 'videocontainer';
         remotes.appendChild(container);
         Util.playSoundNotification('userJoined');
     }
 
     var isVideo = data.stream.getVideoTracks().length > 0;
-    var vid = isVideo ? document.createElement('video') : document.createElement('audio');
-    var id = (isVideo ? 'remoteVideo_' : 'remoteAudio_') + sid + '_' + data.stream.id;
-
-    vid.id = id;
-    vid.autoplay = true;
-    vid.oncontextmenu = function () { return false; };
-
-    container.appendChild(vid);
 
-    // TODO: make mixedstream display:none via css?
-    if (id.indexOf('mixedmslabel') !== -1) {
-        container.id = 'mixedstream';
-        $(container).hide();
+    if (container) {
+        VideoLayout.addRemoteStreamElement( container,
+                                            sid,
+                                            data.stream,
+                                            data.peerjid,
+                                            thessrc);
     }
 
-    var sel = $('#' + id);
-    sel.hide();
-    RTC.attachMediaStream(sel, data.stream);
-
-    if (isVideo) {
-        waitForRemoteVideo(sel, sid, thessrc);
-    }
-
-    data.stream.onended = function () {
-        console.log('stream ended', this.id);
-
-        // Mark video as removed to cancel waiting loop(if video is removed
-        // before has started)
-        sel.removed = true;
-        sel.remove();
-
-        var audioCount = $('#' + container.id + '>audio').length;
-        var videoCount = $('#' + container.id + '>video').length;
-        if (!audioCount && !videoCount) {
-            console.log("Remove whole user", container.id);
-            // Remove whole container
-            container.remove();
-            Util.playSoundNotification('userLeft');
-            VideoLayout.resizeThumbnails();
-        }
-
-        VideoLayout.checkChangeLargeVideo(vid.src);
-    };
-
-    // Add click handler.
-    container.onclick = function (event) {
-        /*
-         * FIXME It turns out that videoThumb may not exist (if there is no
-         * actual video).
-         */
-        var videoThumb = $('#' + container.id + '>video').get(0);
-
-        if (videoThumb)
-            VideoLayout.handleVideoThumbClicked(videoThumb.src);
-
-        event.preventDefault();
-        return false;
-    };
-
-    // Add hover handler
-    $(container).hover(
-        function() {
-            VideoLayout.showDisplayName(container.id, true);
-        },
-        function() {
-            var videoSrc = null;
-            if ($('#' + container.id + '>video')
-                    && $('#' + container.id + '>video').length > 0) {
-                videoSrc = $('#' + container.id + '>video').get(0).src;
-            }
-
-            // If the video has been "pinned" by the user we want to keep the
-            // display name on place.
-            if (!VideoLayout.isLargeVideoVisible()
-                    || videoSrc !== $('#largeVideo').attr('src'))
-                VideoLayout.showDisplayName(container.id, false);
-        }
-    );
-
     // an attempt to work around https://github.com/jitsi/jitmeet/issues/32
     if (isVideo &&
         data.peerjid && sess.peerjid === data.peerjid &&
     }
 });
 
-$(document).bind('callactive.jingle', function (event, videoelem, sid) {
-    if (videoelem.attr('id').indexOf('mixedmslabel') === -1) {
-        // ignore mixedmslabela0 and v0
-        videoelem.show();
-        VideoLayout.resizeThumbnails();
-
-        // Update the large video to the last added video only if there's no
-        // current active or focused speaker.
-        if (!focusedVideoSrc && !VideoLayout.getDominantSpeakerResourceJid())
-            VideoLayout.updateLargeVideo(videoelem.attr('src'), 1);
-
-        VideoLayout.showFocusIndicator();
-    }
-});
-
 $(document).bind('callterminated.jingle', function (event, sid, jid, reason) {
     // Leave the room if my call has been remotely terminated.
     if (connection.emuc.joined && focus == null && reason === 'kick') {
 
     VideoLayout.showFocusIndicator();
 
+    // Add myself to the contact list.
+    ContactList.addContact(jid);
+
     // Once we've joined the muc show the toolbar
     Toolbar.showToolbar();
 
     var displayName = '';
     if (info.displayName)
         displayName = info.displayName + ' (me)';
+    else
+        displayName = "Me";
 
-    VideoLayout.setDisplayName('localVideoContainer', displayName);
+    $(document).trigger('displaynamechanged',
+                        ['localVideoContainer', displayName]);
 });
 
 $(document).bind('entered.muc', function (event, jid, info, pres) {
             case 'recvonly':
                 el.hide();
                 // FIXME: Check if we have to change large video
-                //VideoLayout.checkChangeLargeVideo(el);
+                //VideoLayout.updateLargeVideo(el);
                 break;
             }
         }
     });
 
-    if (jid === connection.emuc.myroomjid) {
-        VideoLayout.setDisplayName('localVideoContainer',
-                                    info.displayName);
-    } else {
-        VideoLayout.ensurePeerContainerExists(jid);
-        VideoLayout.setDisplayName(
-                'participant_' + Strophe.getResourceFromJid(jid),
-                info.displayName);
-    }
+    if (info.displayName && info.displayName.length > 0)
+        $(document).trigger('displaynamechanged',
+                            [jid, info.displayName]);
 
     if (focus !== null && info.displayName !== null) {
         focus.setEndpointDisplayName(jid, info.displayName);
 //    }
 }
 
-
+function hangUp() {
+    if (connection && connection.connected) {
+        // ensure signout
+        $.ajax({
+            type: 'POST',
+            url: config.bosh,
+            async: false,
+            cache: false,
+            contentType: 'application/xml',
+            data: "<body rid='" + (connection.rid || connection._proto.rid) + "' xmlns='http://jabber.org/protocol/httpbind' sid='" + (connection.sid || connection._proto.sid) + "' type='terminate'><presence xmlns='jabber:client' type='unavailable'/></body>",
+            success: function (data) {
+                console.log('signed out');
+                console.log(data);
+            },
+            error: function (XMLHttpRequest, textStatus, errorThrown) {
+                console.log('signout error', textStatus + ' (' + errorThrown + ')');
+            }
+        });
+    }
+    disposeConference(true);
+}
 
 $(document).bind('fatalError.jingle',
     function (event, session, error)

bottom_toolbar.js

+var BottomToolbar = (function (my) {
+    my.toggleChat = function() {
+        if (ContactList.isVisible()) {
+            buttonClick("#contactListButton", "active");
+            ContactList.toggleContactList();
+        }
+
+        buttonClick("#chatBottomButton", "active");
+
+        Chat.toggleChat();
+    };
+
+    my.toggleContactList = function() {
+        if (Chat.isVisible()) {
+            buttonClick("#chatBottomButton", "active");
+            Chat.toggleChat();
+        }
+
+        buttonClick("#contactListButton", "active");
+
+        ContactList.toggleContactList();
+    };
+
+
+    $(document).bind("remotevideo.resized", function (event, width, height) {
+        var bottom = (height - $('#bottomToolbar').outerHeight())/2 + 18;
+
+        $('#bottomToolbar').css({bottom: bottom + 'px'});
+    });
+
+    return my;
+}(BottomToolbar || {}));

chat.js

         else {
             divClassName = "remoteuser";
 
-            if (!$('#chatspace').is(":visible")) {
+            if (!Chat.isVisible()) {
                 unreadMessages++;
                 Util.playSoundNotification('chatNotification');
                 setVisualNotification(true);
         return [chatWidth, availableHeight];
     };
 
+    /**
+     * Indicates if the chat is currently visible.
+     */
+    my.isVisible = function () {
+        return $('#chatspace').is(":visible");
+    };
+
     /**
      * Resizes the chat conversation.
      */

config.js

     minChromeExtVersion: '0.1', // Required version of Chrome extension
     enableRtpStats: true, // Enables RTP stats processing
     openSctp: true, // Toggle to enable/disable SCTP channels
-//    channelLastN: -1, // The default value of the channel attribute last-n.
+    channelLastN: -1, // The default value of the channel attribute last-n.
 //    useRtcpMux: true,
 //    useBundle: true,
     enableRecording: false,

contact_list.js

+/**
+ * Contact list.
+ */
+var ContactList = (function (my) {
+    /**
+     * Indicates if the chat is currently visible.
+     *
+     * @return <tt>true</tt> if the chat is currently visible, <tt>false</tt> -
+     * otherwise
+     */
+    my.isVisible = function () {
+        return $('#contactlist').is(":visible");
+    };
+
+    /**
+     * Adds a contact for the given peerJid if such doesn't yet exist.
+     *
+     * @param peerJid the peerJid corresponding to the contact
+     */
+    my.ensureAddContact = function(peerJid) {
+        var resourceJid = Strophe.getResourceFromJid(peerJid);
+
+        var contact = $('#contactlist>ul>li[id="' + resourceJid + '"]');
+
+        if (!contact || contact.length <= 0)
+            ContactList.addContact(peerJid);
+    };
+
+    /**
+     * Adds a contact for the given peer jid.
+     *
+     * @param peerJid the jid of the contact to add
+     */
+    my.addContact = function(peerJid) {
+        var resourceJid = Strophe.getResourceFromJid(peerJid);
+
+        var contactlist = $('#contactlist>ul');
+
+        var newContact = document.createElement('li');
+        newContact.id = resourceJid;
+
+        newContact.appendChild(createAvatar());
+        newContact.appendChild(createDisplayNameParagraph("Participant"));
+
+        var clElement = contactlist.get(0);
+
+        if (resourceJid === Strophe.getResourceFromJid(connection.emuc.myroomjid)
+            && $('#contactlist>ul .title')[0].nextSibling.nextSibling)
+        {
+            clElement.insertBefore(newContact,
+                    $('#contactlist>ul .title')[0].nextSibling.nextSibling);
+        }
+        else {
+            clElement.appendChild(newContact);
+        }
+    };
+
+    /**
+     * Removes a contact for the given peer jid.
+     *
+     * @param peerJid the peerJid corresponding to the contact to remove
+     */
+    my.removeContact = function(peerJid) {
+        var resourceJid = Strophe.getResourceFromJid(peerJid);
+
+        var contact = $('#contactlist>ul>li[id="' + resourceJid + '"]');
+
+        if (contact && contact.length > 0) {
+            var contactlist = $('#contactlist>ul');
+
+            contactlist.get(0).removeChild(contact.get(0));
+        }
+    };
+
+    /**
+     * Opens / closes the contact list area.
+     */
+    my.toggleContactList = function () {
+        var contactlist = $('#contactlist');
+        var videospace = $('#videospace');
+
+        var chatSize = (ContactList.isVisible()) ? [0, 0] : Chat.getChatSize();
+        var videospaceWidth = window.innerWidth - chatSize[0];
+        var videospaceHeight = window.innerHeight;
+        var videoSize
+            = getVideoSize(null, null, videospaceWidth, videospaceHeight);
+        var videoWidth = videoSize[0];
+        var videoHeight = videoSize[1];
+        var videoPosition = getVideoPosition(videoWidth,
+                                             videoHeight,
+                                             videospaceWidth,
+                                             videospaceHeight);
+        var horizontalIndent = videoPosition[0];
+        var verticalIndent = videoPosition[1];
+
+        var thumbnailSize = VideoLayout.calculateThumbnailSize(videospaceWidth);
+        var thumbnailsWidth = thumbnailSize[0];
+        var thumbnailsHeight = thumbnailSize[1];
+
+        if (ContactList.isVisible()) {
+            videospace.animate({right: chatSize[0],
+                                width: videospaceWidth,
+                                height: videospaceHeight},
+                                {queue: false,
+                                duration: 500});
+
+            $('#remoteVideos').animate({height: thumbnailsHeight},
+                                        {queue: false,
+                                        duration: 500});
+
+            $('#remoteVideos>span').animate({height: thumbnailsHeight,
+                                            width: thumbnailsWidth},
+                                            {queue: false,
+                                            duration: 500,
+                                            complete: function() {
+                                                $(document).trigger(
+                                                        "remotevideo.resized",
+                                                        [thumbnailsWidth,
+                                                         thumbnailsHeight]);
+                                            }});
+
+            $('#largeVideoContainer').animate({ width: videospaceWidth,
+                                                height: videospaceHeight},
+                                                {queue: false,
+                                                 duration: 500
+                                                });
+
+            $('#largeVideo').animate({  width: videoWidth,
+                                        height: videoHeight,
+                                        top: verticalIndent,
+                                        bottom: verticalIndent,
+                                        left: horizontalIndent,
+                                        right: horizontalIndent},
+                                        {   queue: false,
+                                            duration: 500
+                                        });
+
+            $('#contactlist').hide("slide", { direction: "right",
+                                            queue: false,
+                                            duration: 500});
+        }
+        else {
+            // Undock the toolbar when the chat is shown and if we're in a 
+            // video mode.
+            if (VideoLayout.isLargeVideoVisible())
+                Toolbar.dockToolbar(false);
+
+            videospace.animate({right: chatSize[0],
+                                width: videospaceWidth,
+                                height: videospaceHeight},
+                               {queue: false,
+                                duration: 500,
+                                complete: function () {
+                                    contactlist.trigger('shown');
+                                }
+                               });
+
+            $('#remoteVideos').animate({height: thumbnailsHeight},
+                    {queue: false,
+                    duration: 500});
+
+            $('#remoteVideos>span').animate({height: thumbnailsHeight,
+                        width: thumbnailsWidth},
+                        {queue: false,
+                        duration: 500,
+                        complete: function() {
+                            $(document).trigger(
+                                    "remotevideo.resized",
+                                    [thumbnailsWidth, thumbnailsHeight]);
+                        }});
+
+            $('#largeVideoContainer').animate({ width: videospaceWidth,
+                                                height: videospaceHeight},
+                                                {queue: false,
+                                                 duration: 500
+                                                });
+
+            $('#largeVideo').animate({  width: videoWidth,
+                                        height: videoHeight,
+                                        top: verticalIndent,
+                                        bottom: verticalIndent,
+                                        left: horizontalIndent,
+                                        right: horizontalIndent},
+                                        {queue: false,
+                                         duration: 500
+                                        });
+
+            $('#contactlist').show("slide", { direction: "right",
+                                            queue: false,
+                                            duration: 500});
+        }
+    };
+
+    /**
+     * Creates the avatar element.
+     * 
+     * @return the newly created avatar element
+     */
+    function createAvatar() {
+        var avatar = document.createElement('i');
+        avatar.className = "icon-avatar avatar";
+
+        return avatar;
+    };
+
+    /**
+     * Creates the display name paragraph.
+     *
+     * @param displayName the display name to set
+     */
+    function createDisplayNameParagraph(displayName) {
+        var p = document.createElement('p');
+        p.innerHTML = displayName;
+
+        return p;
+    };
+
+    /**
+     * Indicates that the display name has changed.
+     */
+    $(document).bind(   'displaynamechanged',
+                        function (event, peerJid, displayName) {
+        if (peerJid === 'localVideoContainer')
+            peerJid = connection.emuc.myroomjid;
+
+        var resourceJid = Strophe.getResourceFromJid(peerJid);
+
+        var contactName = $('#contactlist #' + resourceJid + '>p');
+
+        if (contactName && displayName && displayName.length > 0)
+            contactName.html(displayName);
+    });
+
+    return my;
+}(ContactList || {}));

css/contact_list.css

+#contactlist {
+    background-color:rgba(0,0,0,.65);
+}
+
+#contactlist>ul {
+    margin: 0px;
+    padding: 0px;
+}
+
+#contactlist>ul>li {
+    list-style-type: none;
+    text-align: left;
+    color: #FFF;
+    font-size: 10pt;
+    padding: 8px 10px;
+}
+
+#contactlist>ul>li>p {
+    display: inline-block;
+    vertical-align: middle;
+    margin: 0px;
+}
+
+#contactlist>ul>li.title {
+    color: #00ccff;
+    font-size: 11pt;
+    border-bottom: 1px solid #676767;
+}
+
+.avatar {
+    padding: 0px;
+    margin-right: 10px;
+    vertical-align: middle;
+    font-size: 22pt;
+}

css/font.css

     -webkit-font-smoothing: antialiased;
     -moz-osx-font-smoothing: grayscale;
 }
+.icon-contactList:before {
+    content: "\e615";
+}
+.icon-avatar:before {
+    content: "\e616";
+}
 .icon-callRetro:before {
     content: "\e611";
 }

css/main.css

     overflow-x: hidden;
 }
 
-#chatspace {
+#chatspace,
+#contactlist {
     display:none;
     position:absolute;
     float: right;
     width: 20%;
     max-width: 200px;
     overflow: hidden;
-    /* background-color:#dfebf1;*/
-    background-color:#FFFFFF;
-    border-left:1px solid #424242;
     z-index: 5;
 }
 
+#chatspace {
+    background-color:#FFF;
+    border-left:1px solid #424242;
+}
+
 #chatconversation {
     visibility: hidden;
     position: relative;
     0 -1px 10px #00ccff;
 }
 
-a.button:hover {
+a.button:hover,
+a.bottomToolbarButton:hover {
     top: 0;
     cursor: pointer;
     background: rgba(0, 0, 0, 0.3);
     font-weight: 200;
 }
 
+#bottomToolbar {
+    display:block;
+    position: absolute;
+    right: -1;
+    bottom: 40px;
+    width: 29px;
+    border-top-left-radius: 10px;
+    border-bottom-left-radius: 10px;
+    color: #FFF;
+    border: 1px solid #000;
+    background: rgba(50,50,50,.65);
+    padding-top: 5px;
+    padding-bottom: 5px;
+    z-index: 6; /*+1 from #remoteVideos*/
+}
+
+.bottomToolbarButton {
+    display: inline-block;
+    position: relative;
+    color: #FFFFFF;
+    top: 0;
+    padding-top: 3px;
+    width: 29px;
+    height: 20px;
+    cursor: pointer;
+    font-size: 10pt;
+    text-align: center;
+    text-shadow: 0px 1px 0px rgba(255,255,255,.3), 0px -1px 0px rgba(0,0,0,.7);
+    z-index: 1;
+}
 
+.active {
+    color: #00ccff;
+}
+
+.bottomToolbar_span>span {
+    display: inline-block;
+    position: absolute;
+    font-size: 7pt;
+    color: #ffffff;
+    text-align:center;
+    cursor: pointer;
+}

css/videolayout_default.css

     padding: 18px;
     bottom: 0;
     left: 0;
-    right: 0;
+    right: 20px;
     width:auto;
     border:1px solid transparent;
     z-index: 5;
     z-index: 0;
     border-radius:10px;
 }
+
+#mixedstream {
+    display:none !important;
+}

data_channels.js

                  */
                 var endpointsEnteringLastN = obj.endpointsEnteringLastN;
 
-                console.debug(
+                var stream = obj.stream;
+
+                console.log(
                     "Data channel new last-n event: ",
-                    lastNEndpoints);
+                    lastNEndpoints, endpointsEnteringLastN, obj);
+
+                $(document).trigger(
+                        'lastnchanged',
+                        [lastNEndpoints, endpointsEnteringLastN, stream]);
             }
             else
             {

fonts/jitsi.svg

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 </font></defs></svg>

index.html

     <script src="libs/rayo.js?v=1"></script>
     <script src="libs/tooltip.js?v=1"></script><!-- bootstrap tooltip lib -->
     <script src="libs/popover.js?v=1"></script><!-- bootstrap tooltip lib -->
-    <script src="config.js?v=3"></script><!-- adapt to your needs, i.e. set hosts and bosh path -->
-    <script src="muc.js?v=12"></script><!-- simple MUC library -->
+    <script src="config.js?v=4"></script><!-- adapt to your needs, i.e. set hosts and bosh path -->
+    <script src="muc.js?v=13"></script><!-- simple MUC library -->
     <script src="estos_log.js?v=2"></script><!-- simple stanza logger -->
     <script src="desktopsharing.js?v=2"></script><!-- desktop sharing -->
-    <script src="data_channels.js?v=2"></script><!-- data channels -->
-    <script src="app.js?v=4"></script><!-- application logic -->
+    <script src="data_channels.js?v=3"></script><!-- data channels -->
+    <script src="app.js?v=5"></script><!-- application logic -->
     <script src="commands.js?v=1"></script><!-- application logic -->
-    <script src="chat.js?v=8"></script><!-- chat logic -->
-    <script src="util.js?v=5"></script><!-- utility functions -->
+    <script src="chat.js?v=9"></script><!-- chat logic -->
+    <script src="contact_list.js?v=1"></script><!-- contact list logic -->
+    <script src="util.js?v=6"></script><!-- utility functions -->
     <script src="etherpad.js?v=8"></script><!-- etherpad plugin -->
     <script src="prezi.js?v=4"></script><!-- prezi plugin -->
     <script src="smileys.js?v=2"></script><!-- smiley images -->
     <script src="analytics.js?v=1"></script><!-- google analytics plugin -->
     <script src="rtp_stats.js?v=1"></script><!-- RTP stats processing -->
     <script src="local_stats.js?v=1"></script><!-- Local stats processing -->
-    <script src="videolayout.js?v=7"></script><!-- video ui -->
-    <script src="toolbar.js?v=3"></script><!-- toolbar ui -->
+    <script src="videolayout.js?v=8"></script><!-- video ui -->
+    <script src="toolbar.js?v=4"></script><!-- toolbar ui -->
     <script src="canvas_util.js?v=1"></script><!-- canvas drawing utils -->
     <script src="audio_levels.js?v=1"></script><!-- audio levels plugin -->
+    <script src="media_stream.js?v=1"></script><!-- media stream -->
+    <script src="bottom_toolbar.js?v=1"></script><!-- media stream -->
     <link href="//netdna.bootstrapcdn.com/font-awesome/4.0.3/css/font-awesome.css" rel="stylesheet">
-    <link rel="stylesheet" href="css/font.css"/>
-    <link rel="stylesheet" type="text/css" media="screen" href="css/main.css?v=22"/>
-    <link rel="stylesheet" type="text/css" media="screen" href="css/videolayout_default.css?v=8" id="videolayout_default"/>
+    <link rel="stylesheet" href="css/font.css?v=2"/>
+    <link rel="stylesheet" type="text/css" media="screen" href="css/main.css?v=23"/>
+    <link rel="stylesheet" type="text/css" media="screen" href="css/videolayout_default.css?v=9" id="videolayout_default"/>
     <link rel="stylesheet" href="css/jquery-impromptu.css?v=4">
     <link rel="stylesheet" href="css/modaldialog.css?v=3">
     <link rel="stylesheet" href="css/popup_menu.css?v=2">
     <link rel="stylesheet" href="css/popover.css?v=1">
+    <link rel="stylesheet" href="css/contact_list.css?v=1">
     <!--
         Link used for inline installation of chrome desktop streaming extension,
         is updated automatically from the code with the value defined in config.js -->
                     </a>
                     <div class="header_button_separator"></div>
                     <span class="toolbar_span">
-                        <a class="button" data-toggle="popover" data-placement="bottom" data-content="Open / close chat" onclick='Chat.toggleChat();'>
+                        <a class="button" data-toggle="popover" data-placement="bottom" data-content="Open / close chat" onclick='BottomToolbar.toggleChat();'>
                             <i id="chatButton" class="icon-chat"></i>
                         </a>
                         <span id="unreadMessages"></span>
                 <audio id="userJoined" src="sounds/joined.wav" preload="auto"></audio>
                 <audio id="userLeft" src="sounds/left.wav" preload="auto"></audio>
             </div>
+            <span id="bottomToolbar">
+                <span class="bottomToolbar_span">
+                    <a class="bottomToolbarButton" data-toggle="popover" data-placement="top" data-content="Open / close chat" onclick='BottomToolbar.toggleChat();'>
+                        <i id="chatBottomButton" class="icon-chat-simple"></i>
+                    </a>
+                    <span id="unreadMessages"></span>
+                </span>
+                <span class="bottomToolbar_span">
+                    <a class="bottomToolbarButton" data-toggle="popover" data-placement="top" data-content="Open / close contact list" onclick='BottomToolbar.toggleContactList();'>
+                        <i id="contactListButton" class="icon-contactList"></i>
+                    </a>
+                    <span id="unreadMessages"></span>
+                </span>
+            </span>
         </div>
         <div id="chatspace">
             <div id="nickname">
         </div>
         <a id="downloadlog" onclick='dump(event.target);' data-toggle="popover" data-placement="right" data-content="Download logs" ><i class="fa fa-cloud-download"></i></a>
     </div>
+    <div id="contactlist">
+        <ul>
+            <li class="title"><i class="icon-contact-list"></i> CONTACT LIST</li>
+        </ul>
+    </div>
+    <a id="downloadlog" onclick='dump(event.target);' data-toggle="popover" data-placement="right" data-content="Download logs" ><i class="fa fa-cloud-download"></i></a>
   </body>
 </html>

media_stream.js

+/**
+ * Provides a wrapper class for the MediaStream.
+ * 
+ * TODO : Add here the src from the video element and other related properties
+ * and get rid of some of the mappings that we use throughout the UI.
+ */
+var MediaStream = (function() {
+    /**
+     * Creates a MediaStream object for the given data, session id and ssrc.
+     *
+     * @param data the data object from which we obtain the stream,
+     * the peerjid, etc.
+     * @param sid the session id
+     * @param ssrc the ssrc corresponding to this MediaStream
+     *
+     * @constructor
+     */
+    function MediaStreamProto(data, sid, ssrc) {
+        this.VIDEO_TYPE = "Video";
+        this.AUDIO_TYPE = "Audio";
+        this.stream = data.stream;
+        this.peerjid = data.peerjid;
+        this.ssrc = ssrc;
+        this.session = connection.jingle.sessions[sid];
+        this.type = (this.stream.getVideoTracks().length > 0)
+                    ? this.VIDEO_TYPE : this.AUDIO_TYPE;
+    }
+
+    return MediaStreamProto;
+})();

muc.js

     addVideoInfoToPresence: function(isMuted) {
         this.presMap['videons'] = 'http://jitsi.org/jitmeet/video';
         this.presMap['videomuted'] = isMuted.toString();
+    },
+    findJidFromResource: function(resourceJid) {
+        var peerJid = null;
+        Object.keys(this.members).some(function (jid) {
+            peerJid = jid;
+            return Strophe.getResourceFromJid(jid) === resourceJid;
+        });
+        return peerJid;
     }
 });

toolbar.js

 
         var conferenceName = roomUrl.substring(roomUrl.lastIndexOf('/') + 1);
         var subject = "Invitation to a Jitsi Meet (" + conferenceName + ")";
-        var body = "Hey there, I%27d like to invite you to a Jitsi Meet"
-                    + " conference I%27ve just set up.%0D%0A%0D%0A"
-                    + "Please click on the following link in order"
-                    + " to join the conference.%0D%0A%0D%0A"
-                    + roomUrl + "%0D%0A%0D%0A"
-                    + sharedKeyText
-                    + "Note that Jitsi Meet is currently only supported by Chromium,"
-                    + " Google Chrome and Opera, so you need"
-                    + " to be using one of these browsers.%0D%0A%0D%0A"
-                    + "Talk to you in a sec!";
+        var body = "Hey there, I%27d like to invite you to a Jitsi Meet" +
+                    " conference I%27ve just set up.%0D%0A%0D%0A" +
+                    "Please click on the following link in order" +
+                    " to join the conference.%0D%0A%0D%0A" +
+                    roomUrl +
+                    "%0D%0A%0D%0A" +
+                    sharedKeyText +
+                    "Note that Jitsi Meet is currently only supported by Chromium," +
+                    " Google Chrome and Opera, so you need" +
+                    " to be using one of these browsers.%0D%0A%0D%0A" +
+                    "Talk to you in a sec!";
 
         if (window.localStorage.displayname)
             body += "%0D%0A%0D%0A" + window.localStorage.displayname;

util.js

      */
     my.getAvailableVideoWidth = function () {
         var chatspaceWidth
-            = $('#chatspace').is(":visible") ? $('#chatspace').width() : 0;
+            = (Chat.isVisible() || ContactList.isVisible())
+                ? $('#chatspace').width()
+                : 0;
 
         return window.innerWidth - chatspaceWidth;
     };

videolayout.js

 var VideoLayout = (function (my) {
     var preMuted = false;
     var currentDominantSpeaker = null;
+    var lastNCount = config.channelLastN;
+    var lastNEndpointsCache = [];
 
     my.changeLocalAudio = function(stream) {
         connection.jingle.localAudio = stream;
         // Add stream ended handler
         stream.onended = function () {
             localVideoContainer.removeChild(localVideo);
-            VideoLayout.checkChangeLargeVideo(localVideo.src);
+            VideoLayout.updateRemovedVideo(localVideo.src);
         };
         // Flip video x axis if needed
         flipXLocalVideo = flipX;
         RTC.attachMediaStream(localVideoSelector, stream);
 
         localVideoSrc = localVideo.src;
+
         VideoLayout.updateLargeVideo(localVideoSrc, 0);
     };
 
      * another one instead.
      * @param removedVideoSrc src stream identifier of the video.
      */
-    my.checkChangeLargeVideo = function(removedVideoSrc) {
+    my.updateRemovedVideo = function(removedVideoSrc) {
         if (removedVideoSrc === $('#largeVideo').attr('src')) {
             // this is currently displayed as large
             // pick the last visible video in the row
             if (!pick) {
                 console.info("Last visible video no longer exists");
                 pick = $('#remoteVideos>span[id!="mixedstream"]>video').get(0);
-                if (!pick) {
+
+                if (!pick || !pick.src) {
                     // Try local video
                     console.info("Fallback to local video...");
                     pick = $('#remoteVideos>span>span>video').get(0);
                     = $('#participant_' + currentDominantSpeaker + '>video')
                         .get(0);
 
-                if (dominantSpeakerVideo)
+                if (dominantSpeakerVideo) {
                     VideoLayout.updateLargeVideo(dominantSpeakerVideo.src, 1);
+                }
             }
 
             return;
      * in the document and creates it eventually.
      * 
      * @param peerJid peer Jid to check.
+     * 
+     * @return Returns <tt>true</tt> if the peer container exists,
+     * <tt>false</tt> - otherwise
      */
     my.ensurePeerContainerExists = function(peerJid) {
-        var peerResource = Strophe.getResourceFromJid(peerJid);
-        var videoSpanId = 'participant_' + peerResource;
+        ContactList.ensureAddContact(peerJid);
+
+        var resourceJid = Strophe.getResourceFromJid(peerJid);
+
+        var videoSpanId = 'participant_' + resourceJid;
 
         if ($('#' + videoSpanId).length > 0) {
             // If there's been a focus change, make sure we add focus related
             // interface!!
-            if (focus && $('#remote_popupmenu_' + peerResource).length <= 0)
+            if (focus && $('#remote_popupmenu_' + resourceJid).length <= 0)
                 addRemoteVideoMenu( peerJid,
                                     document.getElementById(videoSpanId));
-            return;
         }
-
-        var container
-            = VideoLayout.addRemoteVideoContainer(peerJid, videoSpanId);
-
-        var nickfield = document.createElement('span');
-        nickfield.className = "nick";
-        nickfield.appendChild(document.createTextNode(peerResource));
-        container.appendChild(nickfield);
-        VideoLayout.resizeThumbnails();
+        else {
+            var container
+                = VideoLayout.addRemoteVideoContainer(peerJid, videoSpanId);
+
+            var nickfield = document.createElement('span');
+            nickfield.className = "nick";
+            nickfield.appendChild(document.createTextNode(resourceJid));
+            container.appendChild(nickfield);
+
+            // In case this is not currently in the last n we don't show it.
+            if (lastNCount
+                && lastNCount > 0
+                && $('#remoteVideos>span').length >= lastNCount + 2) {
+                showPeerContainer(resourceJid, false);
+            }
+            else
+                VideoLayout.resizeThumbnails();
+        }
     };
 
     my.addRemoteVideoContainer = function(peerJid, spanId) {
     };
 
     /**
-     * Shows the display name for the given video.
+     * Creates an audio or video stream element.
+     */
+    my.createStreamElement = function (sid, stream) {
+        var isVideo = stream.getVideoTracks().length > 0;
+
+        var element = isVideo
+                        ? document.createElement('video')
+                        : document.createElement('audio');
+        var id = (isVideo ? 'remoteVideo_' : 'remoteAudio_')
+                    + sid + '_' + stream.id;
+
+        element.id = id;
+        element.autoplay = true;
+        element.oncontextmenu = function () { return false; };
+
+        return element;
+    };
+
+    my.addRemoteStreamElement
+        = function (container, sid, stream, peerJid, thessrc) {
+        var newElementId = null;
+
+        var isVideo = stream.getVideoTracks().length > 0;
+
+        if (container) {
+            var streamElement = VideoLayout.createStreamElement(sid, stream);
+            newElementId = streamElement.id;
+
+            container.appendChild(streamElement);
+
+            var sel = $('#' + newElementId);
+            sel.hide();
+
+            // If the container is currently visible we attach the stream.
+            if (!isVideo
+                || (container.offsetParent !== null && isVideo)) {
+                RTC.attachMediaStream(sel, stream);
+
+                if (isVideo)
+                    waitForRemoteVideo(sel, thessrc, stream);
+            }
+
+            stream.onended = function () {
+                console.log('stream ended', this);
+
+                VideoLayout.removeRemoteStreamElement(stream, container);
+
+                if (peerJid)
+                    ContactList.removeContact(peerJid);
+            };
+
+            // Add click handler.
+            container.onclick = function (event) {
+                /*
+                 * FIXME It turns out that videoThumb may not exist (if there is
+                 * no actual video).
+                 */
+                var videoThumb = $('#' + container.id + '>video').get(0);
+
+                if (videoThumb)
+                    VideoLayout.handleVideoThumbClicked(videoThumb.src);
+
+                event.preventDefault();
+                return false;
+            };
+
+            // Add hover handler
+            $(container).hover(
+                function() {
+                    VideoLayout.showDisplayName(container.id, true);
+                },
+                function() {
+                    var videoSrc = null;
+                    if ($('#' + container.id + '>video')
+                            && $('#' + container.id + '>video').length > 0) {
+                        videoSrc = $('#' + container.id + '>video').get(0).src;
+                    }
+
+                    // If the video has been "pinned" by the user we want to
+                    // keep the display name on place.
+                    if (!VideoLayout.isLargeVideoVisible()
+                            || videoSrc !== $('#largeVideo').attr('src'))
+                        VideoLayout.showDisplayName(container.id, false);
+                }
+            );
+        }
+
+        return newElementId;
+    };
+
+    /**
+     * Removes the remote stream element corresponding to the given stream and
+     * parent container.
+     * 
+     * @param stream the stream
+     * @param container
+     */
+    my.removeRemoteStreamElement = function (stream, container) {
+        if (!container)
+            return;
+
+        var select = null;
+        var removedVideoSrc = null;
+        if (stream.getVideoTracks().length > 0) {
+            select = $('#' + container.id + '>video');
+            removedVideoSrc = select.get(0).src;
+        }
+        else
+            select = $('#' + container.id + '>audio');
+
+        // Remove video source from the mapping.
+        delete videoSrcToSsrc[removedVideoSrc];
+
+        // Mark video as removed to cancel waiting loop(if video is removed
+        // before has started)
+        select.removed = true;
+        select.remove();
+
+        var audioCount = $('#' + container.id + '>audio').length;
+        var videoCount = $('#' + container.id + '>video').length;
+
+        if (!audioCount && !videoCount) {
+            console.log("Remove whole user", container.id);
+            // Remove whole container
+            container.remove();
+            Util.playSoundNotification('userLeft');
+            VideoLayout.resizeThumbnails();
+        }
+
+        if (removedVideoSrc)
+            VideoLayout.updateRemovedVideo(removedVideoSrc);
+    };
+
+    /**
+     * Show/hide peer container for the given resourceJid.
+     */
+    function showPeerContainer(resourceJid, isShow) {
+        var peerContainer = $('#participant_' + resourceJid);
+
+        if (!peerContainer)
+            return;
+
+        if (!peerContainer.is(':visible') && isShow)
+            peerContainer.show();
+        else if (peerContainer.is(':visible') && !isShow)
+            peerContainer.hide();
+    };
+
+    /**
+     * Sets the display name for the given video span id.
      */
-    my.setDisplayName = function(videoSpanId, displayName) {
+    function setDisplayName(videoSpanId, displayName) {
         var nameSpan = $('#' + videoSpanId + '>span.displayname');
         var defaultLocalDisplayName = "Me";
         var defaultRemoteDisplayName = "Speaker";
 
             if (nameSpanElement.id === 'localDisplayName' &&
                 $('#localDisplayName').text() !== displayName) {
-                if (displayName)
+                if (displayName && displayName.length > 0)
                     $('#localDisplayName').text(displayName + ' (me)');
                 else
                     $('#localDisplayName').text(defaultLocalDisplayName);
             } else {
-                if (displayName)
+                if (displayName && displayName.length > 0)
                     $('#' + videoSpanId + '_name').text(displayName);
                 else
                     $('#' + videoSpanId + '_name').text(defaultRemoteDisplayName);
                 nameSpan.innerText = defaultRemoteDisplayName;
             }
 
-            if (displayName && displayName.length) {
+            if (displayName && displayName.length > 0) {
                 nameSpan.innerText = displayName;
             }
 
      * @param isShow indicates if the display name should be shown or hidden
      */
     my.showDisplayName = function(videoSpanId, isShow) {
-        // FIX: need to use noConflict of jquery, because apparently we're
-        // using another library that uses $, which conflics with jquery and
-        // sometimes objects are null because of that!!!!!!!!!
-        // http://api.jquery.com/jQuery.noConflict/
-        var nameSpan = jQuery('#' + videoSpanId + '>span.displayname').get(0);
+        var nameSpan = $('#' + videoSpanId + '>span.displayname').get(0);
         if (isShow) {
             if (nameSpan && nameSpan.innerHTML && nameSpan.innerHTML.length) 
                 nameSpan.setAttribute("style", "display:inline-block;");
             return;
         }
 
-        var nameSpan = $('#' + videoSpanId + '>span.displayname');
-
         var statusSpan = $('#' + videoSpanId + '>span.status');
         if (!statusSpan.length) {
             //Add status span
 
     /**
      * Calculates the thumbnail size.
+     *
+     * @param videoSpaceWidth the width of the video space
      */
     my.calculateThumbnailSize = function (videoSpaceWidth) {
         // Calculate the available height, which is the inner window height minus
        // container used for highlighting shadow.
        var availableHeight = 100;
 
-       var numvids = $('#remoteVideos>span:visible').length;
+       var numvids = 0;
+       if (lastNCount && lastNCount > 0)
+           numvids = lastNCount + 1;
+       else
+           numvids = $('#remoteVideos>span:visible').length;
 
        // Remove the 3px borders arround videos and border around the remote
        // videos area
-       var availableWinWidth = videoSpaceWidth - 2 * 3 * numvids - 50;
+       var availableWinWidth = videoSpaceWidth - 2 * 3 * numvids - 70;
 
        var availableWidth = availableWinWidth / numvids;
        var aspectRatio = 16.0 / 9.0;
         return currentDominantSpeaker;
     };
 
+    /**
+     * Returns the corresponding resource jid to the given peer container
+     * DOM element.
+     *
+     * @return the corresponding resource jid to the given peer container
+     * DOM element
+     */
+    my.getPeerContainerResourceJid = function (containerElement) {
+        var i = containerElement.id.indexOf('participant_');
+
+        if (i >= 0)
+            return containerElement.id.substring(i + 12); 
+    };
+
     /**
      * Adds the remote video menu element for the given <tt>jid</tt> in the
      * given <tt>parentElement</tt>.
             VideoLayout.showVideoIndicator(videoSpanId, isMuted);
     });
 
+    /**
+     * Display name changed.
+     */
+    $(document).bind('displaynamechanged',
+                    function (event, jid, displayName, status) {
+        if (jid === 'localVideoContainer'
+            || jid === connection.emuc.myroomjid) {
+            setDisplayName('localVideoContainer',
+                           displayName);
+        } else {
+            VideoLayout.ensurePeerContainerExists(jid);
+
+            setDisplayName(
+                'participant_' + Strophe.getResourceFromJid(jid),
+                displayName,
+                status);
+        }
+    });
+
     /**
      * On dominant speaker changed event.
      */
                 === Strophe.getResourceFromJid(connection.emuc.myroomjid))
             return;
 
-        // Obtain container for new dominant speaker.
-        var container  = document.getElementById(
-                'participant_' + resourceJid);
-
         // Update the current dominant speaker.
         if (resourceJid !== currentDominantSpeaker)
             currentDominantSpeaker = resourceJid;
         else
             return;
 
+        // Obtain container for new dominant speaker.
+        var container  = document.getElementById(
+                'participant_' + resourceJid);
+
         // Local video will not have container found, but that's ok
         // since we don't want to switch to local video.
         if (container && !focusedVideoSrc)
         {
             var video = container.getElementsByTagName("video");
-            if (video.length)
-            {
+
+            // Update the large video if the video source is already available,
+            // otherwise wait for the "videoactive.jingle" event.
+            if (video.length && video[0].currentTime > 0)
                 VideoLayout.updateLargeVideo(video[0].src);
+        }
+    });
+
+    /**
+     * On last N change event.
+     *
+     * @param event the event that notified us
+     * @param lastNEndpoints the list of last N endpoints
+     * @param endpointsEnteringLastN the list currently entering last N
+     * endpoints
+     */
+    $(document).bind('lastnchanged', function ( event,
+                                                lastNEndpoints,
+                                                endpointsEnteringLastN,
+                                                stream) {
+        if (lastNCount !== lastNEndpoints.length)
+            lastNCount = lastNEndpoints.length;
+
+        lastNEndpointsCache = lastNEndpoints;
+
+        $('#remoteVideos>span').each(function( index, element ) {
+            var resourceJid = VideoLayout.getPeerContainerResourceJid(element);
+
+            if (resourceJid
+                && lastNEndpoints.length > 0
+                && lastNEndpoints.indexOf(resourceJid) < 0) {
+                console.log("Remove from last N", resourceJid);
+                showPeerContainer(resourceJid, false);
             }
+        });
+
+        if (!endpointsEnteringLastN || endpointsEnteringLastN.length < 0)
+            endpointsEnteringLastN = lastNEndpoints;
+
+        if (endpointsEnteringLastN && endpointsEnteringLastN.length > 0) {
+            endpointsEnteringLastN.forEach(function (resourceJid) {
+
+                if (!$('#participant_' + resourceJid).is(':visible')) {
+                    console.log("Add to last N", resourceJid);
+                    showPeerContainer(resourceJid, true);
+
+                    mediaStreams.some(function (mediaStream) {
+                        if (mediaStream.peerjid
+                            && Strophe.getResourceFromJid(mediaStream.peerjid)
+                                === resourceJid
+                            && mediaStream.type === mediaStream.VIDEO_TYPE) {
+                            var sel = $('#participant_' + resourceJid + '>video');
+
+                            RTC.attachMediaStream(sel, mediaStream.stream);
+                            waitForRemoteVideo(
+                                    sel,
+                                    mediaStream.ssrc,
+                                    mediaStream.stream);
+                            return true;
+                        }
+                    });
+                }
+            });
+        }
+    });
+
+    $(document).bind('videoactive.jingle', function (event, videoelem) {
+        if (videoelem.attr('id').indexOf('mixedmslabel') === -1) {
+            // ignore mixedmslabela0 and v0
+
+            videoelem.show();
+            VideoLayout.resizeThumbnails();
+
+            var videoParent = videoelem.parent();
+            var parentResourceJid = null;
+            if (videoParent)
+                parentResourceJid
+                    = VideoLayout.getPeerContainerResourceJid(videoParent[0]);
+
+            // Update the large video to the last added video only if there's no
+            // current dominant or focused speaker or update it to the current
+            // dominant speaker.
+            if ((!focusedVideoSrc && !VideoLayout.getDominantSpeakerResourceJid())
+                || (parentResourceJid
+                && VideoLayout.getDominantSpeakerResourceJid()
+                    === parentResourceJid)) {
+                VideoLayout.updateLargeVideo(videoelem.attr('src'), 1);
+            }
+
+            VideoLayout.showFocusIndicator();
         }
     });
 
     return my;
 }(VideoLayout || {}));
-
-