Adds support for etherpad in meet.jit.si. Issue #36.

app.js

             window.history.pushState('VideoChat', 'Room: ' + roomnode, window.location.pathname + roomnode);
         }
     }
+
     roomjid = roomnode + '@' + config.hosts.muc;
 
     if (config.useNicks) {
     updateLargeVideo(localVideoSrc, true, 0);
 
     $('#localVideo').click(function () {
-	updateLargeVideo($(this).attr('src'), true, 0);
+        $(document).trigger("video.selected", [false]);
+        updateLargeVideo($(this).attr('src'), true, 0);
+
         $('video').each(function (idx, el) {
             if (el.id.indexOf('mixedmslabel') != -1) {
                 el.volume = 0;
     };
     sel.click(
         function () {
+            $(document).trigger("video.selected", [false]);
             updateLargeVideo($(this).attr('src'), false, 1);
         }
     );
         focus = new ColibriFocus(connection, config.hosts.bridge);
     }
 
+    if (focus && config.etherpad_base) {
+        Etherpad.init();
+    }
+
     showFocusIndicator();
 
     // Once we've joined the muc show the toolbar
         $(container).hide();
         resizeThumbnails();
     }
-
     if (focus === null && connection.emuc.myroomjid == connection.emuc.list_members[0]) {
         console.log('welcome to our new focus... myself');
         focus = new ColibriFocus(connection, config.hosts.bridge);
         if (Object.keys(connection.emuc.members).length > 0) {
             focus.makeConference(Object.keys(connection.emuc.members));
         }
+        $(document).trigger('focusechanged.muc', [focus]);
     } 
     else if (focus && Object.keys(connection.emuc.members).length === 0) {
         console.log('everyone left');
     setPresentationVisible(true);
     $('#largeVideoContainer').hover(
         function (event) {
-            if ($('#largeVideo').css('visibility') == 'hidden')
+            if (isPresentationVisible())
                 $('#reloadPresentation').css({display:'inline-block'});
         },
         function (event) {
-            if ($('#largeVideo').css('visibility') == 'visible')
+            if (!isPresentationVisible())
                 $('#reloadPresentation').css({display:'none'});
             else {
                 var e = event.toElement || event.relatedTarget;
  */
 function setPresentationVisible(visible) {
     if (visible) {
+        // Trigger the video.selected event to indicate a change in the large video.
+        $(document).trigger("video.selected", [true]);
+
         $('#largeVideo').fadeOut(300, function () {
             $('#largeVideo').css({visibility:'hidden'});
             $('#presentation>iframe').fadeIn(300, function() {
     }
 }
 
+var isPresentationVisible = function () {
+    return ($('#presentation>iframe') != null && $('#presentation>iframe').css('opacity') == 1);
+}
+
 /**
  * Updates the large video with the given new video source.
  */
         $('#presentation>iframe').width(availableWidth);
         $('#presentation>iframe').height(availableWidth / aspectRatio);
     }
-    
+
+    if ($('#etherpad>iframe')) {
+        $('#etherpad>iframe').width(availableWidth);
+        $('#etherpad>iframe').height(availableWidth / aspectRatio);
+    }
+
     resizeThumbnails();
 }
 
 function resizeThumbnails() {
     // Calculate the available height, which is the inner window height minus 39px for the header
-    // minus 4px for the delimiter lines on the top and bottom of the large video,
+    // minus 2px for the delimiter lines on the top and bottom of the large video,
     // minus the 36px space inside the remoteVideos container used for highlighting shadow.
-    var availableHeight = window.innerHeight - $('#largeVideo').height() - 79;
+    var availableHeight = window.innerHeight - $('#largeVideo').height() - 59;
     var numvids = $('#remoteVideos>span:visible').length;
 
     // Remove the 1px borders arround videos and the chat width.
     }
 
     // size videos so that while keeping AR and max height, we have a nice fit
-    $('#remoteVideos').height(availableHeight+26); // add the 2*18px-padding-top border used for highlighting shadow.
+    $('#remoteVideos').height(availableHeight);
     $('#remoteVideos>span').width(availableWidth);
     $('#remoteVideos>span').height(availableHeight);
 }

css/main.css

     margin-left: auto;
     margin-right: auto;
 }
-#presentation, .videocontainer>video {
+#presentation, #etherpad, .videocontainer>video {
     position: absolute;
     left: 0px;
     top: 0px;
     position:relative;
     text-align:center;
     height:196px;
-    padding-top:10px;
+    padding: 5px 0px;
     width:auto;
     overflow: hidden;
     border:1px solid transparent;
     background-clip: padding-box;
     -webkit-border-radius: 5px;
     -webkit-background-clip: padding-box;
-    z-index: 2;
+    z-index: 3;
 }

etherpad.js

+var Etherpad = (function (my) {
+    var etherpadName = null;
+
+    /**
+     * Initializes the etherpad.
+     */
+    my.init = function (name) {
+
+        if (config.etherpad_base && !etherpadName) {
+
+            if (!name) {
+                // In case we're the focus we generate the name.
+                etherpadName = Math.random().toString(36).substring(7) + '_' + (new Date().getTime()).toString();
+                shareEtherpad();
+            }
+            else
+                etherpadName = name;
+                
+            this.domain = config.etherpad_base;
+            this.options = "?showControls=true&showChat=false&showLineNumbers=true&useMonospaceFont=false";
+
+            createEtherpadButton();
+
+            this.iframe = document.createElement('iframe');
+            this.iframe.src = this.domain + etherpadName + this.options;
+            this.iframe.frameBorder = 0;
+            this.iframe.scrolling = "no";
+            this.iframe.width = $('#largeVideoContainer').width() || 640;
+            this.iframe.height = $('#largeVideoContainer').height() || 480;
+            this.iframe.setAttribute('style', 'visibility: hidden;');
+
+            document.getElementById('etherpad').appendChild(this.iframe);
+        }
+    }
+
+    /**
+     * Opens/hides the Etherpad.
+     */
+    my.toggleEtherpad = function (isPresentation) {
+        var largeVideo = null;
+        if (isPresentationVisible())
+            largeVideo = $('#presentation>iframe');
+        else
+            largeVideo = $('#largeVideo');
+
+        if ($('#etherpad>iframe').css('visibility') == 'hidden') {
+            largeVideo.fadeOut(300, function () {
+                if (isPresentationVisible())
+                    largeVideo.css({opacity:'0'});
+                else
+                    largeVideo.css({visibility:'hidden'});
+
+                $('#etherpad>iframe').fadeIn(300, function() {
+                    $('#etherpad>iframe').css({visibility:'visible'});
+                    $('#etherpad').css({zIndex:2});
+                });
+            });
+        }
+        else if ($('#etherpad>iframe')) {
+            $('#etherpad>iframe').fadeOut(300, function () {
+                $('#etherpad>iframe').css({visibility:'hidden'});
+                $('#etherpad').css({zIndex:0});
+                if (!isPresentation) {
+                    $('#largeVideo').fadeIn(300, function() {
+                        $('#largeVideo').css({visibility:'visible'});
+                    });
+                }
+            });
+        }
+    };
+
+    /**
+     * Shares the Etherpad name with other participants.
+     */
+    function shareEtherpad() {
+        connection.emuc.addEtherpadToPresence(etherpadName);
+        connection.emuc.sendPresence();
+    }
+
+    /**
+     * Creates the Etherpad button and adds it to the toolbar.
+     */
+    function createEtherpadButton() {
+        //<div class="header_button_separator"></div>
+        //<a class="button" onclick='Etherpad.openEtherpad("teeest");'>
+        //<i title="Open shared document" class="fa fa-file-text fa-lg"></i></a>
+        var separator = document.createElement('div');
+        separator.className = 'header_button_separator';
+
+        var button = document.createElement('a');
+        button.className = 'button';
+        button.setAttribute('onclick', 'Etherpad.toggleEtherpad(0);');
+        
+        var buttonImage = document.createElement('i');
+        buttonImage.setAttribute('title', 'Open shared document');
+        buttonImage.className = 'fa fa-file-text fa-lg';
+
+        button.appendChild(buttonImage);
+
+        var toolbar = document.getElementById('toolbar');
+        toolbar.insertBefore(button, toolbar.childNodes[toolbar.childNodes.length - 4]);
+        toolbar.insertBefore(separator, button);
+    }
+
+    /**
+     * On Etherpad added to muc.
+     */
+    $(document).bind('etherpadadded.muc', function (event, jid, etherpadName) {
+        console.log("Etherpad added", etherpadName);
+        if (config.etherpad_base && !focus) {
+            Etherpad.init(etherpadName);
+        }
+    });
+
+    /**
+     * On focus changed event.
+     */
+    $(document).bind('focusechanged.muc', function (event, focus) {
+        console.log("Focus changed");
+        if (config.etherpad_base)
+            shareEtherpad();
+    });
+
+    /**
+     * On video selected event.
+     */
+    $(document).bind('video.selected', function (event, isPresentation) {
+        if (!config.etherpad_base)
+            return;
+
+        if ($('#etherpad>iframe').css('visibility') != 'hidden')
+            Etherpad.toggleEtherpad(isPresentation);
+    });
+
+    return my;
+}(Etherpad || {}));

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=5"></script><!-- simple MUC library -->
+    <script src="muc.js?v=6"></script><!-- simple MUC library -->
     <script src="estos_log.js?v=2"></script><!-- simple stanza logger -->
-    <script src="app.js?v=19"></script><!-- application logic -->
+    <script src="app.js?v=20"></script><!-- application logic -->
+    <script src="etherpad.js?v=1"></script><!-- etherpad plugin -->
     <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=15"/>
+    <link rel="stylesheet" type="text/css" media="screen" href="css/main.css?v=16"/>
     <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>
             <div class="header_button_separator"></div>
             <a class="button" onclick='openPreziDialog();'><i title="Share prezi" class="fa fa-desktop fa-lg"></i></a>
             <div class="header_button_separator"></div>
-            <a class="button" onclick='toggleFullScreen();'><i title="Enter / Exit Full Screen" class="fa fa-arrows-alt"></i></a>
-            <!--span id="settingsButton">
-                <div class="header_button_separator"></div>
-                <a class="button" onclick='openSettingsDialog();'><i title="Settings" class="fa fa-cog fa-lg"></i></a>
-            </span-->
+            <a class="button" onclick='toggleFullScreen();'><i title="Enter / Exit Full Screen" class="fa fa-arrows-alt fa-lg"></i></a>
         </span>
     </div>
     <div id="settings">
         <div id="largeVideoContainer" class="videocontainer">
             <div id="reloadPresentation"><a onclick='reloadPresentation();'><i title="Reload Prezi" class="fa fa-repeat fa-lg"></i></a></div>
             <div id="presentation"></div>
+            <div id="etherpad"></div>
             <video id="largeVideo" autoplay oncontextmenu="return false;"></video>
         </div>
         <div class="fade_line"></div>

muc.js

             return true;
         }
 
+        // Parse etherpad tag.
+        var etherpad = $(pres).find('>etherpad');
+        if (etherpad.length) {
+            $(document).trigger('etherpadadded.muc', [from, etherpad.text()]);
+        }
+
+        // Parse prezi tag.
         var presentation = $(pres).find('>prezi');
         if (presentation.length)
         {
                             c('current').t(this.presMap['prezicurrent']).up().up();
         }
 
+        if (this.presMap['etherpadns']) {
+            pres.c('etherpad', {xmlns: this.presMap['etherpadns']}).t(this.presMap['etherpadname']).up();
+        }
+
         if (this.presMap['medians'])
         {
             pres.c('media', {xmlns: this.presMap['medians']});
     },
     getPrezi: function (roomjid) {
         return this.preziMap[roomjid];
+    },
+    addEtherpadToPresence: function(etherpadName) {
+        this.presMap['etherpadns'] = 'http://jitsi.org/jitmeet/etherpad';
+        this.presMap['etherpadname'] = etherpadName;
     }
 });