Adds display name management. Closes issue #23.

app.js

     RTCPeerconnection = TraceablePeerConnection; 
 
     connection = new Strophe.Connection(document.getElementById('boshURL').value || config.bosh || '/http-bind');
+
+    if (nickname) {
+        connection.emuc.addDisplayNameToPresence(nickname);
+    }
+
     if (connection.disco) {
         // for chrome, add multistream cap
     }
 $(document).bind('joined.muc', function (event, jid, info) {
     updateRoomUrl(window.location.href);
     document.getElementById('localNick').appendChild(
-        document.createTextNode(Strophe.getResourceFromJid(jid) + ' (you)')
+        document.createTextNode(Strophe.getResourceFromJid(jid) + ' (me)')
     );
 
     if (Object.keys(connection.emuc.members).length < 1) {
         focus = new ColibriFocus(connection, config.hosts.bridge);
     }
-                 
+
+    showFocusIndicator();
+
     // Once we've joined the muc show the toolbar
     showToolbar();
+
+    var displayName = '';
+    if (info.displayName)
+        displayName = info.displayName + ' (me)';
+
+    showDisplayName('localVideoContainer', displayName);
 });
 
 $(document).bind('entered.muc', function (event, jid, info, pres) {
     console.log('entered', jid, info);
     console.log(focus);
-    
-    var container = addRemoteVideoContainer('participant_' + Strophe.getResourceFromJid(jid));
+
+    var videoSpanId = 'participant_' + Strophe.getResourceFromJid(jid);
+    var container = addRemoteVideoContainer(videoSpanId);
+
+    if (info.displayName)
+        showDisplayName(videoSpanId, info.displayName);
 
     var nickfield = document.createElement('span');
     nickfield.appendChild(document.createTextNode(Strophe.getResourceFromJid(jid)));
         //console.log(jid, 'assoc ssrc', ssrc.getAttribute('type'), ssrc.getAttribute('ssrc'));
         ssrc2jid[ssrc.getAttribute('ssrc')] = jid;
     });
+
+    if (info.displayName) {
+        if (jid === connection.emuc.myroomjid)
+            showDisplayName('localVideoContainer', info.displayName + ' (me)');
+        else
+            showDisplayName('participant_' + Strophe.getResourceFromJid(jid), info.displayName);
+    }
 });
 
 $(document).bind('passwordrequired.muc', function (event, jid) {
 
                         if (lockKey.value != null)
                         {
-                            setSharedKey(lockKey);
+                            setSharedKey(lockKey.value);
                             connection.emuc.doJoin(jid, lockKey.value);
                         }
                     }
 function resizeLarge() {
     resizeChat();
     var availableHeight = window.innerHeight;
-    var chatspaceWidth = $('#chatspace').width();
+    var chatspaceWidth = $('#chatspace').is(":visible")
+                            ? $('#chatspace').width()
+                            : 0;
 
     var numvids = $('#remoteVideos>video:visible').length;
     if (numvids < 5)
 }
 
 $(document).ready(function () {
+    var storedDisplayName = window.localStorage.displayname;
+    if (storedDisplayName) {
+        nickname = storedDisplayName;
+
+        setChatConversationMode(true);
+    }
+
     $('#nickinput').keydown(function(event) {
         if (event.keyCode == 13) {
             event.preventDefault();
             this.value = '';
             if (!nickname) {
                 nickname = val;
-                $('#nickname').css({visibility:"hidden"});
-                $('#chatconversation').css({visibility:'visible'});
-                $('#usermsg').css({visibility:'visible'});
-                $('#usermsg').focus();
+                window.localStorage.displayname = nickname;
+
+                connection.emuc.addDisplayNameToPresence(nickname);
+                connection.emuc.sendPresence();
+
+                setChatConversationMode(true);
+
                 return;
             }
         }
         divClassName = "localuser";
     else
         divClassName = "remoteuser";
-   
+
     //replace links and smileys
     message = processReplacements(message);
 
  */
 function showFocusIndicator() {
     if (focus != null) {
-        var localVideoToolbar = document.getElementById('localVideoToolbar');
+        var indicatorSpan = $('#localVideoContainer .focusindicator');
 
-        if (localVideoToolbar.childNodes.length === 0)
+        if (indicatorSpan.children().length == 0)
         {
-            createFocusIndicatorElement(localVideoToolbar);
+            createFocusIndicatorElement(indicatorSpan[0]);
         }
     }
     else if (Object.keys(connection.jingle.sessions).length > 0) {
     }, 5);
 }
 
-
 /*
  * Toggles the application in and out of full screen mode 
  * (a.k.a. presentation mode in Chrome).
  */
-function toggleFullScreen() {    
+function toggleFullScreen() {
     var fsElement = document.documentElement;
 
     if (!document.mozFullScreen && !document.webkitIsFullScreen){
         }
     }
 }
+
+/**
+ *
+ */
+function showDisplayName(videoSpanId, displayName) {
+    var nameSpan = $('#' + videoSpanId + '>span.displayname');
+
+    // If we already have a display name for this video.
+    if (nameSpan.length > 0) {
+        var nameSpanElement = nameSpan.get(0);
+
+        if (nameSpanElement.id == 'localDisplayName'
+            && $('#localDisplayName').html() != displayName)
+            $('#localDisplayName').html(displayName);
+        else
+            $('#' + videoSpanId + '_name').html(displayName);
+    }
+    else {
+        var editButton = null;
+        if (videoSpanId == 'localVideoContainer') {
+            editButton = createEditDisplayNameButton();
+        }
+
+        if (displayName.length) {
+            nameSpan = document.createElement('span');
+            nameSpan.className = 'displayname';
+            nameSpan.innerHTML = displayName;
+            $('#' + videoSpanId)[0].appendChild(nameSpan);
+        }
+
+        if (!editButton) {
+            nameSpan.id = videoSpanId + '_name';
+        }
+        else {
+            nameSpan.id = 'localDisplayName';
+            $('#' + videoSpanId)[0].appendChild(editButton);
+            
+            var editableText = document.createElement('input');
+            editableText.className = 'displayname';
+            editableText.id = 'editDisplayName';
+
+            if (displayName.length)
+                editableText.value = displayName.substring(0, displayName.indexOf(' (me)'));
+
+            editableText.setAttribute('style', 'display:none;');
+            editableText.setAttribute('placeholder', 'ex. Jane Pink');
+            $('#' + videoSpanId)[0].appendChild(editableText);
+
+            $('#localVideoContainer .displayname').bind("click", function(e) {
+                e.preventDefault();
+                $('#localDisplayName').hide();
+                $('#editDisplayName').show();
+                $('#editDisplayName').focus();
+                $('#editDisplayName').select();
+
+                var inputDisplayNameHandler = function(name) {
+                    if (nickname != name) {
+                        nickname = name;
+                        window.localStorage.displayname = nickname;
+                        connection.emuc.addDisplayNameToPresence(nickname);
+                        connection.emuc.sendPresence();
+                    }
+
+                    if (!$('#localDisplayName').is(":visible")) {
+                        $('#localDisplayName').html(name + " (me)");
+                        $('#localDisplayName').show();
+                        $('#editDisplayName').hide();
+                    }
+                };
+
+                $('#editDisplayName').one("focusout", function (e) {
+                    inputDisplayNameHandler(this.value);
+                });
+
+                $('#editDisplayName').on('keydown', function (e) {
+                    if (e.keyCode == 13) {
+                        e.preventDefault();
+                        inputDisplayNameHandler(this.value);
+                    }
+                });
+            });
+        }
+    }
+}
+
+function createEditDisplayNameButton() {
+    var editButton = document.createElement('a');
+    editButton.className = 'displayname';
+    editButton.innerHTML = '<i class="fa fa-pencil"></i>';
+
+    return editButton;
+}
+
+function setChatConversationMode(isConversationMode) {
+    if (isConversationMode) {
+        $('#nickname').css({visibility:"hidden"});
+        $('#chatconversation').css({visibility:'visible'});
+        $('#usermsg').css({visibility:'visible'});
+        $('#usermsg').focus();
+    }
+}

css/jquery-impromptu.css

 	background-color: #000;
 }
 div.jqi{ 
-	width: 400px; 
-	font-family: Verdana, Geneva, Arial, Helvetica, sans-serif; 
+	width: 400px;
 	position: absolute; 
 	background-color: #ffffff; 
 	font-size: 11px; 

css/main.css

     margin:0px;
     height:100%;
     color: #424242;
-    font-family:'YanoneKaffeesatzLight',Verdana,Tahoma,Arial;
+    font-family:'Helvetica Neue', Helvetica, sans-serif;
 	font-weight: 400;
     background: #e9e9e9;
     overflow-x: hidden;
     line-height: 20px;
     height: 40px;
     color: #333;
-    font-weight: bold;
     text-align: left;
     border:1px solid #ACD8F0;
     outline: none; /* removes the default outline */
     z-index: 2;
 }
 
+.videocontainer>span.displayname,
+.videocontainer>input.displayname {
+    display: inline-block;
+    position: absolute;
+    background: -webkit-linear-gradient(left, rgba(0,0,0,.7), rgba(0,0,0,0));
+    color: #b7b7b7;
+    bottom: 0;
+    left: 0;
+    padding: 3px 5px;
+    width: 100%;
+    height: auto;
+    max-height: 18px;
+    font-size: 9pt;
+    text-align: left;
+    text-overflow: ellipsis;
+    overflow: hidden;
+    white-space: nowrap;
+    z-index: 2;
+    box-sizing: border-box;
+}
+
+#localVideoContainer>span.displayname:hover {
+    cursor: text;
+}
+
+.videocontainer>a.displayname {
+    display: inline-block;
+    position: absolute;
+    color: #b7b7b7;
+    bottom: 0;
+    right: 0;
+    padding: 3px 5px;
+    font-size: 9pt;
+    cursor: pointer;
+    z-index: 2;
+}
+
 #reloadPresentation {
     display: none;
     position: absolute;

index.html

     <script src="libs/strophejingle.bundle.js?v=7"></script><!-- strophe.jingle bundle -->
     <script src="libs/colibri.js?v=7"></script><!-- colibri focus implementation -->
     <script src="//code.jquery.com/ui/1.10.4/jquery-ui.js"></script>
-    <script src="muc.js?v=4"></script><!-- simple MUC library -->
+    <script src="muc.js?v=5"></script><!-- simple MUC library -->
     <script src="estos_log.js?v=2"></script><!-- simple stanza logger -->
-    <script src="app.js?v=17"></script><!-- application logic -->
+    <script src="app.js?v=18"></script><!-- application logic -->
     <script src="smileys.js?v=1"></script><!-- smiley images -->
     <script src="replacement.js?v=5"></script><!-- link and smiley replacement -->
     <link href="//netdna.bootstrapcdn.com/font-awesome/4.0.3/css/font-awesome.css" rel="stylesheet">
-    <link rel="stylesheet" type="text/css" media="screen" href="css/main.css?v=14"/>
-    <link rel="stylesheet" href="css/jquery-impromptu.css?v=3">
+    <link rel="stylesheet" type="text/css" media="screen" href="css/main.css?v=15"/>
+    <link rel="stylesheet" href="css/jquery-impromptu.css?v=4">
     <link rel="stylesheet" href="css/modaldialog.css?v=3">
     <script src="libs/jquery-impromptu.js"></script>
     <script src="libs/jquery.autosize.js"></script>
             <span id="localVideoContainer" class="videocontainer">
                 <span id="localNick"></span>
                 <video id="localVideo" autoplay oncontextmenu="return false;" muted></video>
-                <span id="localVideoToolbar" class="focusindicator"></span>
+                <span class="focusindicator"></span>
             </span>
         </div>
     </div>

muc.js

             this.connection.addHandler(this.onPresenceError.bind(this), null, 'presence', 'error', null, this.roomjid, {matchBare: true});
             this.connection.addHandler(this.onMessage.bind(this), null, 'message', null, null, this.roomjid, {matchBare: true});
         }
-
-        var join = $pres({to: this.myroomjid }).c('x', {xmlns: 'http://jabber.org/protocol/muc'});
         if (password !== undefined) {
-            join.c('password').t(password);
+            this.presMap['password'] = password;
         }
-        this.connection.send(join);
+        this.sendPresence();
     },
     onPresence: function (pres) {
-        console.log("PRESENCE", pres);
         var from = pres.getAttribute('from');
         var type = pres.getAttribute('type');
         if (type != null) {
         var tmp = $(pres).find('>x[xmlns="http://jabber.org/protocol/muc#user"]>item');
         member.affiliation = tmp.attr('affiliation');
         member.role = tmp.attr('role');
+
+        var nicktag = $(pres).find('>nick[xmlns="http://jabber.org/protocol/nick"]');
+        member.displayName = (nicktag.length > 0 ? nicktag.text() : null);
+
         if (from == this.myroomjid) {
             if (member.affiliation == 'owner') this.isOwner = true;
             if (!this.joined) {
                 $(document).trigger('joined.muc', [from, member]);
                 this.list_members.push(from);
             }
+            else
+                $(document).trigger('presence.muc', [from, member, pres]);
         } else if (this.members[from] === undefined) {
             // new participant
             this.members[from] = member;
     },
     sendPresence: function () {
         var pres = $pres({to: this.presMap['to'] });
-        pres.c('x', {xmlns: this.presMap['xns']}).up();
+        pres.c('x', {xmlns: this.presMap['xns']});
+
+        if (this.presMap['password']) {
+            pres.c('password').t(this.presMap['password']).up();
+        }
+
+        pres.up();
+
+        if (this.presMap['displayName']) {
+            // XEP-0172
+            pres.c('nick', {xmlns: 'http://jabber.org/protocol/nick'}).t(this.presMap['displayName']).up();
+        }
+
         if (this.presMap['prezins']) {
             pres.c('prezi', {xmlns: this.presMap['prezins'], 'url': this.presMap['preziurl']}).
                             c('current').t(this.presMap['prezicurrent']).up().up();
         pres.up();
         connection.send(pres);
     },
+    addDisplayNameToPresence: function (displayName) {
+        this.presMap['displayName'] = displayName;
+    },
     addMediaToPresence: function (sourceNumber, mtype, ssrcs) {
         if (!this.presMap['medians'])
             this.presMap['medians'] = 'http://estos.de/ns/mjs';