app/assets/javascripts/backbone/views/tabbar/tabbar.js.coffee
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 Xmpp.Views.Tabbar ||= {}
 
 class Xmpp.Views.Tabbar.TabbarView extends Backbone.View
   template: JST["backbone/templates/tabbar/tabbar"]
   el: $('#js-tabbar')
 
   initialize: () ->
     _.bindAll(this)
 
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     Backbone.Events.on('openChat', (chat) =>
       @hideCurrentChatWindow()
       @addOrSelect(chat)
     )
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     Backbone.Events.on('closeChat', (tab, chatModel) =>
       @removeTab(tab)
 
       if tab == @activeTab
         firstTab = @selectFirstTab()
         if firstTab
           App.debug 'fire openChat'
           Backbone.Events.trigger('openChat', firstTab.model)
         #TODO: vybrat naposledy pouzity tab
     )
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     @tabs = []
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     @activeTab = null
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     @render()
 
   addOrSelect: (chat) ->
     tab = _.find(@tabs, (tab) ->
       tab.hasParticipants(chat.get('who'), chat.get('withWhom'))
     )
 
     if (!! tab)
       App.debug 'selecting existing tab'
     else
       App.debug 'adding new tab'
       tab = new Xmpp.Views.Tabbar.TabView(model: chat)
       @tabs.push tab
       $(@el).append(tab.render().el)
 
     _.each(@tabs, (tab) ->
       tab.setInactive()
     )
 
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     @activeTab = tab
     @activeTab.setActive()
     @activeTab.showChat()
 
   hideCurrentChatWindow: ->
     if @activeTab
       App.debug 'zakryvam chat window'
       @activeTab.hideChat()
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   removeTab: (tab) ->
     @tabs = _.without(@tabs, tab)
 
   render: ->
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     $(@el).html(@template())
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     return this
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   selectFirstTab: ->
     _.first(@tabs)