@@ -46,6 +46,9 @@ this.App =

     startPollingMessages: ->

       App.Com.trigger(event: 'app.chat.startPollingMessages')

+    whoUseThisApp: ->

+      App.Com.trigger(event: 'app.roster.whoUseThisApp')

+

     setPresence: ->

       App.Com.trigger(event: 'app.roster.setPresence')

@@ -106,6 +109,13 @@ this.App =

         App.Collections.contacts.subscriptionChanged(subscription)

       )

+      App._dispatcher.bind('app.roster.using_this_app', (person) ->

+        App.debug ['is using this app', person.jid]

+        contact = App.Collections.contacts.get(person.jid)

+        if (contact)

+          contact.setUsingMyApp()

+      )

+

       App._dispatcher.bind('app.chat.importChat', (chatData) ->

         newChat = new Xmpp.Models.Chat(

           chatId: chatData.chat_id,

@@ -14,6 +14,7 @@ App.Com.connect(->

   App.Com.initRoster()

   App.Com.startFetchingVcards()

   App.Com.startPollingRoster()

+  App.Com.whoUseThisApp()

   App.Com.setPresence()

   App.Com.getMe()

@@ -8,6 +8,7 @@ class Xmpp.Models.Contact extends Xmpp.Models.Model

     message: ''

     avatar: 'assets/avatar.png'

     belongsTo: []

+    usingMyApp: false

   initialize: ->

     _.bindAll(this)

@@ -20,6 +21,9 @@ class Xmpp.Models.Contact extends Xmpp.Models.Model

   firstname: ->

     @get('name').split(' ')[0]

+  setUsingMyApp: ->

+    @set('usingMyApp', true)

+

 class Xmpp.Collections.ContactsCollection extends Backbone.Collection

   model: Xmpp.Models.Contact

@@ -5,8 +5,9 @@

   %span.status.icon-record{class: "#{@status}"}

 %h2 #{@message}  

 %span.action

-  %span.icon-bubbles.chat

-    %span chat

+  -if @usingMyApp

+    %span.icon-bubbles.chat

+      %span chat

   -#%span.icon-bubbles.invite

     %span invite

@@ -198,6 +198,7 @@

   }

   .action {

+    display: none;

     margin-right: 2px;

     margin-top: -31px;

     float: right;

@@ -200,6 +200,18 @@ class WsRosterController < WsController

         end

     end

+    def ask_if_using_this_app

+        connection_store[:rosters].each do |roster|

+            client = connection_store[:link_roster_client][roster]

+

+            roster.items.each do |jid, contact|

+                client.send(MessageBuilder::control_question(client.jid.strip.to_s, jid))

+            end

+        end

+

+        start_polling_control_answer()

+    end

+

     ##

     # Pridaj noveho priatela do zoznamu

     def add_friend(data)

@@ -227,4 +239,17 @@ class WsRosterController < WsController

             else                 :online

         end

     end

+

+    def start_polling_control_answer

+        connection_store[:clients].each do |client|

+            client.add_message_callback do |message|

+                if message.attribute('i_am_using_same_app')

+                    send_message 'app.roster.using_this_app',

+                                 jid: message.from.node + '@' + message.from.domain

+                elsif message.attribute('are_you_using_my_app')

+                    client.send(MessageBuilder::control_answer(client.jid.strip.to_s, message.from))

+                end

+            end

+        end

+    end

 end

@@ -48,6 +48,22 @@ module MessageBuilder

         message

     end

+    def self.control_answer(from, to)

+        message = Jabber::Message.new(to)

+        message.from = from

+        message.add_attributes('i_am_using_same_app' => 'true')

+

+        message

+    end

+

+    def self.control_question(from, to)

+        message = Jabber::Message.new(to)

+        message.from = from

+        message.add_attributes('are_you_using_my_app' => '?')

+

+        message

+    end

+

     private

     def self.collect_contacts(to_element, contacts)

@@ -57,6 +57,7 @@ WebsocketRails::EventMap.describe do

             subscribe :updateMyStatus,      to: WsRosterController, with_method: :me_update_status

             subscribe :updateMyVcard,       to: WsRosterController, with_method: :me_update_vcard

             subscribe :removeContact,       to: WsRosterController, with_method: :remove_contact

+            subscribe :whoUseThisApp,       to: WsRosterController, with_method: :ask_if_using_this_app

         end

         namespace :chat do