Updates use of recording states, add some information texts and notifications.

css/videolayout_default.css

     background-position: center;
 }
 
+.videoMessageFilter {
+    -webkit-filter: grayscale(.5) opacity(0.8);
+    filter: grayscale(.5) opacity(0.8);
+}
+
 .videoProblemFilter {
     -webkit-filter: blur(10px) grayscale(.5) opacity(0.8);
     filter: blur(10px) grayscale(.5) opacity(0.8);

index.html

     <script src="libs/popover.js?v=1"></script><!-- bootstrap tooltip lib -->
     <script src="libs/toastr.js?v=1"></script><!-- notifications lib -->
     <script src="interface_config.js?v=5"></script>
-    <script src="libs/app.bundle.js?v=119"></script>
+    <script src="libs/app.bundle.js?v=120"></script>
     <script src="analytics.js?v=1"></script><!-- google analytics plugin -->
     <link rel="stylesheet" href="css/font.css?v=7"/>
     <link rel="stylesheet" href="css/toastr.css?v=1">

lang/main.json

         "FETCH_SESSION_ID": "Obtaining session-id...",
         "GOT_SESSION_ID": "Obtaining session-id... Done",
         "GET_SESSION_ID_ERROR": "Get session-id error: "
+    },
+    "recording":
+    {
+        "toaster": "Currently recording!",
+        "pending": "Your recording will start as soon as another participant joins",
+        "on": "Recording has been started"
     }
 }

modules/UI/toolbars/Toolbar.js

 var roomUrl = null;
 var sharedKey = '';
 var UI = null;
+var recordingToaster = null;
 
 var buttonHandlers = {
     "toolbar_button_mute": function () {
             function () { },
             ':input:first'
         );
-    }, Toolbar.setRecordingButtonState, Toolbar.setRecordingButtonState);
+    }, Toolbar.setRecordingButtonState);
 }
 
 /**
     };
 
     // Sets the state of the recording button
-    my.setRecordingButtonState = function (isRecording) {
+    my.setRecordingButtonState = function (recordingState) {
         var selector = $('#recordButton');
-        if (isRecording) {
+
+        if (recordingState === 'on') {
             selector.removeClass("icon-recEnable");
             selector.addClass("icon-recEnable active");
-        } else {
+
+            $("#largeVideo").toggleClass("videoMessageFilter", true);
+            var recordOnKey = "recording.on";
+            $('#videoConnectionMessage').attr("data-i18n", recordOnKey);
+            $('#videoConnectionMessage').text(APP.translation.translateString(recordOnKey));
+
+            setTimeout(function(){
+                $("#largeVideo").toggleClass("videoMessageFilter", false);
+                $('#videoConnectionMessage').css({display: "none"});
+            }, 1500);
+
+            recordingToaster = messageHandler.notify(null, "recording.toaster", null,
+                null, null, {timeOut: 0, closeButton: null});
+        } else if (recordingState === 'off') {
             selector.removeClass("icon-recEnable active");
             selector.addClass("icon-recEnable");
+
+            $("#largeVideo").toggleClass("videoMessageFilter", false);
+            $('#videoConnectionMessage').css({display: "none"});
+
+            if (recordingToaster)
+                messageHandler.remove(recordingToaster);
+
+        } else if (recordingState === 'pending') {
+            selector.removeClass("icon-recEnable active");
+            selector.addClass("icon-recEnable");
+
+            $("#largeVideo").toggleClass("videoMessageFilter", true);
+            var recordPendingKey = "recording.pending";
+            $('#videoConnectionMessage').attr("data-i18n", recordPendingKey);
+            $('#videoConnectionMessage').text(APP.translation.translateString(recordPendingKey));
+            $('#videoConnectionMessage').css({display: "block"});
         }
     };
 

modules/UI/util/MessageHandler.js

                 "'>" + APP.translation.translateString(displayNameKey);
         }
         displayNameSpan += "</span>";
-        toastr.info(
+        return toastr.info(
             displayNameSpan + '<br>' +
             '<span class=' + cls + ' data-i18n="' + messageKey + '"' +
                 (messageArguments?
             '</span>', null, options);
     };
 
+    /**
+     * Removes the toaster.
+     * @param toasterElement
+     */
+    my.remove = function(toasterElement) {
+        toasterElement.remove();
+    };
+
     return my;
 }(messageHandler || {}));
 

modules/xmpp/recording.js

  */
 var jireconRid = null;
 
+/**
+ * The callback to update the recording button. Currently used from colibri
+ * after receiving a pending status.
+ */
+var recordingStateChangeCallback = null;
+
 function setRecordingToken(token) {
     recordingToken = token;
 }
 
     var iq = $iq({to: config.hosts.jirecon, type: 'set'})
         .c('recording', {xmlns: 'http://jitsi.org/protocol/jirecon',
-            action: state ? 'start' : 'stop',
+            action: (state === 'on') ? 'start' : 'stop',
             mucjid: connection.emuc.roomjid});
-    if (!state){
+    if (state === 'off'){
         iq.attrs({rid: jireconRid});
     }
 
             // TODO wait for an IQ with the real status, since this is
             // provisional?
             jireconRid = $(result).find('recording').attr('rid');
-            console.log('Recording ' + (state ? 'started' : 'stopped') +
+            console.log('Recording ' + ((state === 'on') ? 'started' : 'stopped') +
                 '(jirecon)' + result);
             recordingEnabled = state;
-            if (!state){
+            if (state === 'off'){
                 jireconRid = null;
             }
 
         function (result) {
             console.log('Set recording "', state, '". Result:', result);
             var recordingElem = $(result).find('>conference>recording');
-            var newState = ('true' === recordingElem.attr('state'));
+            var newState = recordingElem.attr('state');
 
             recordingEnabled = newState;
             callback(newState);
+
+            if (newState === 'pending' && recordingStateChangeCallback == null) {
+                recordingStateChangeCallback = callback;
+                connection.addHandler(function(iq){
+                    var state = $(iq).find('recording').attr('state');
+                    if (state)
+                        recordingStateChangeCallback(state);
+                }, 'http://jitsi.org/protocol/colibri', 'iq', null, null, null);
+            }
         },
         function (error) {
             console.warn(error);
 }
 
 var Recording = {
-    toggleRecording: function (tokenEmptyCallback,
-                               startingCallback, startedCallback, connection) {
+    toggleRecording: function (tokenEmptyCallback, recordingStateChangeCallback, connection) {
         if (!Moderator.isModerator()) {
             console.log(
                     'non-focus, or conference not yet organized:' +
         if (!recordingToken && !useJirecon) {
             tokenEmptyCallback(function (value) {
                 setRecordingToken(value);
-                self.toggleRecording(tokenEmptyCallback,
-                    startingCallback, startedCallback, connection);
+                self.toggleRecording(tokenEmptyCallback, recordingStateChangeCallback, connection);
             });
 
             return;
         }
 
         var oldState = recordingEnabled;
-        startingCallback(!oldState);
-        setRecording(!oldState,
+        var newState = (oldState === 'off' || !oldState) ? 'on' : 'off';
+
+        setRecording(newState,
             recordingToken,
             function (state) {
                 console.log("New recording state: ", state);
                     // have been wrong
                     setRecordingToken(null);
                 }
-                startedCallback(state);
+                recordingStateChangeCallback(state);
 
             },
             connection

modules/xmpp/xmpp.js

         return true;
     },
     toggleRecording: function (tokenEmptyCallback,
-                               startingCallback, startedCallback) {
+                               recordingStateChangeCallback) {
         Recording.toggleRecording(tokenEmptyCallback,
-            startingCallback, startedCallback, connection);
+            recordingStateChangeCallback, connection);
     },
     addToPresence: function (name, value, dontSend) {
         switch (name) {