Adds SIP calls support

app.js

             membersCount: 0,
             audioMuted: false,
             videoMuted: false,
-            sipGatewayEnabled: false, //FIXME handle
             isLocalId (id) {
                 return this.localId === id;
             },
         APP.UI.addLocalStream(track);
     };
 
+    APP.conference.sipGatewayEnabled = () => {
+        return room.isSIPCallingSupported();
+    };
+
     function getDisplayName(id) {
         if (APP.conference.isLocalId(id)) {
             return APP.settings.getDisplayName();
     });
 
     APP.UI.addListener(UIEvents.SIP_DIAL, function (sipNumber) {
-        // FIXME add dial
-        // APP.xmpp.dial(
-        //     sipNumber,
-        //     'fromnumber',
-        //     APP.conference.roomName,
-        //     roomLocker.password
-        // );
+        room.dial(sipNumber);
     });
 
 

libs/lib-jitsi-meet.js

         reject(new Error("The conference is not created yet!"))});
 }
 
+/**
+ * Returns true if the SIP calls are supported and false otherwise
+ */
+JitsiConference.prototype.isSIPCallingSupported = function () {
+    if(this.room)
+        return this.room.isSIPCallingSupported();
+    return false;
+}
+
 /**
  * Dials a number.
  * @param number the number
         reject(new Error("The conference is not created yet!"))});
 }
 
+/**
+ * Returns true if the SIP calls are supported and false otherwise
+ */
+ChatRoom.prototype.isSIPCallingSupported = function () {
+    if(this.moderator)
+        return this.moderator.isSipGatewayEnabled();
+    return false;
+}
+
 /**
  * Dials a number.
  * @param number the number
     // Sip gateway can be enabled by configuring Jigasi host in config.js or
     // it will be enabled automatically if focus detects the component through
     // service discovery.
-    this.sipGatewayEnabled =
+    this.sipGatewayEnabled = this.xmppService.options.hosts &&
         this.xmppService.options.hosts.call_control !== undefined;
 
     this.eventEmitter = emitter;

modules/UI/toolbars/Toolbar.js

 
     // Shows or hides SIP calls button
     showSipCallButton (show) {
-        if (APP.conference.sipGatewayEnabled && UIUtil.isButtonEnabled('sip') && show) {
+        if (APP.conference.sipGatewayEnabled() && UIUtil.isButtonEnabled('sip') && show) {
             $('#toolbar_button_sip').css({display: "inline-block"});
         } else {
             $('#toolbar_button_sip').css({display: "none"});