handle DTMF_SUPPORT_CHANGED event

app.js

         room.setDisplayName(nickname);
     });
 
-    room.on(ConferenceErrors.PASSWORD_REQUIRED, function () {
-        // FIXME handle
-    });
     room.on(ConferenceErrors.CONNECTION_ERROR, function () {
         // FIXME handle
     });
         );
     });
 
+    room.on(ConferenceEvents.DTMF_SUPPORT_CHANGED, function (isDTMFSupported) {
+        APP.UI.updateDTMFSupport(isDTMFSupported);
+    });
+
     return new Promise(function (resolve, reject) {
         room.on(ConferenceEvents.CONFERENCE_JOINED, resolve);
 
-        room.on(ConferenceErrors.ROOM_PASSWORD_REQUIRED, function () {
+        room.on(ConferenceErrors.PASSWORD_REQUIRED, function () {
             APP.UI.markRoomLocked(true);
             roomLocker.requirePassword().then(function () {
                 room.join(roomLocker.password);
             });
         });
 
+        // FIXME handle errors here
+
         APP.UI.closeAuthenticationDialog();
         room.join();
     }).catch(function (err) {
-        if (err[0] === ConferenceErrors.PASSWORD_REQUIRED) {
-            // FIXME ask for password and try again
-            return initConference(localTracks, connection);
-        }
-
-        // FIXME else notify that we cannot conenct to the room
+        // FIXME notify that we cannot conenct to the room
 
         throw new Error(err[0]);
     });

modules/RoomLocker.js

     messageHandler.showError("dialog.lockTitle", "dialog.lockMessage");
 }
 
-const JitsiConferenceErrors = JitsiMeetJS.errors.conference;
+const ConferenceErrors = JitsiMeetJS.errors.conference;
 
 export default function createRoomLocker (room) {
     let password;
         return room.lock(newPass).then(function () {
             password = newPass;
         }).catch(function (err) {
-            if (err === JitsiConferenceErrors.PASSWORD_NOT_SUPPORTED) {
+            if (err === ConferenceErrors.PASSWORD_NOT_SUPPORTED) {
                 notifyPasswordNotSupported();
             } else {
                 notifyPasswordFailed(err);

modules/UI/UI.js

     Etherpad.init(name);
 }
 
-/**
- * The dialpad button is shown iff there is at least one member that supports
- * DTMF (e.g. jigasi).
- */
-function onDtmfSupportChanged(dtmfSupport) {
-    //TODO: enable when the UI is ready
-    //Toolbar.showDialPadButton(dtmfSupport);
-}
-
 UI.addUser = function (jid, id, displayName) {
     messageHandler.notify(
         displayName,'notify.somebody', 'connected', 'notify.connected'
     Chat.updateChatConversation(from, displayName, message, stamp);
 };
 
+UI.updateDTMFSupport = function (isDTMFSupported) {
+    //TODO: enable when the UI is ready
+    //Toolbar.showDialPadButton(dtmfSupport);
+};
+
 module.exports = UI;