Improved collision detection.

app/assets/javascripts/app/controllers/ticket_zoom.coffee

@@ -227,6 +227,8 @@ class App.TicketZoom extends App.Controller
     @positionPageHeaderStart()
     @autosaveStart()
     @shortcutNavigationStart()
+    return if !@attributeBar
+    @attributeBar.start()
 
   pagePosition: (params = {}) =>
 
@@ -285,6 +287,8 @@ class App.TicketZoom extends App.Controller
     @positionPageHeaderStop()
     @autosaveStop()
     @shortcutNavigationstop()
+    return if !@attributeBar
+    @attributeBar.stop()
 
   changed: =>
     return false if !@ticket
@@ -417,7 +421,8 @@ class App.TicketZoom extends App.Controller
         el:        elLocal.find('.ticket-meta')
       )
 
-      new App.TicketZoomAttributeBar(
+      @attributeBar = new App.TicketZoomAttributeBar(
+        ticket:      @ticket
         el:          elLocal.find('.js-attributeBar')
         overview_id: @overview_id
         callback:    @submit

app/assets/javascripts/app/controllers/ticket_zoom/attribute_bar.coffee

@@ -49,13 +49,21 @@ class App.TicketZoomAttributeBar extends App.Controller
     @setSecondaryAction(@secondaryAction, localeEl)
 
     if @permissionCheck('ticket.agent')
-      new App.TaskbarWatcher(
+      @taskbarWatcher = new App.TaskbarWatcher(
         task_key: @task_key
         el:       localeEl.filter('.js-avatars')
       )
 
     @html localeEl
 
+  start: =>
+    return if !@taskbarWatcher
+    @taskbarWatcher.start()
+
+  stop: =>
+    return if !@taskbarWatcher
+    @taskbarWatcher.stop()
+
   checkMacroChanges: =>
     macroLastUpdated = App.Macro.lastUpdatedAt()
     return if macroLastUpdated is @macroLastUpdated

app/assets/javascripts/app/controllers/ticket_zoom/taskbar_watcher.coffee

@@ -2,6 +2,7 @@ class App.TaskbarWatcher extends App.Controller
   constructor: ->
     super
     @subscribeId = App.TaskManager.preferencesSubscribe(@task_key, @render)
+    App.TaskManager.preferencesTrigger(@task_key)
 
   release: =>
     return if !@subscribeId
@@ -10,23 +11,30 @@ class App.TaskbarWatcher extends App.Controller
   render: (preferences) =>
     return if !preferences
     return if !preferences.tasks
+
+    currentUserId = App.Session.get('id')
+    for watcher in preferences.tasks
+      if watcher.user_id != currentUserId
+        if watcher.last_contact
+          watcher.idle = false
+          diff = new Date().getTime() - new Date(watcher.last_contact).getTime()
+          if diff > 300000
+            watcher.idle = true
+
     return if !@diffrence(@lastTasks, preferences.tasks)
-    @lastTasks = preferences.tasks
+    @lastTasks = clone(preferences.tasks)
 
     watchers = []
-    currentUserId = App.Session.get('id')
     @el.empty()
     for watcher in preferences.tasks
       if watcher.user_id != currentUserId
         cssClass = []
-        lastContact = new Date(new Date(watcher.last_contact).getTime() + 5 * 60000)
-        if new Date() > lastContact
+        if watcher.idle
           cssClass.push('avatar--idle')
         if watcher.changed
           cssClass.push('avatar--changed')
         else
           cssClass.push('avatar--not-changed')
-
         @el.append('<div class="js-avatar"></div>')
         @el.append('<div class="half-spacer"></div>')
 
@@ -42,6 +50,17 @@ class App.TaskbarWatcher extends App.Controller
           status.append App.Utils.icon('pen')
           avatar.el.find('.avatar').append status
 
+  start: =>
+    @intervalId = @interval(=>
+      App.TaskManager.preferencesTrigger(@task_key)
+      5 * 60000
+      'ticket-watcher-interval'
+    )
+
+  stop: =>
+    return if !@intervalId
+    @clearInterval(@intervalId)
+
   diffrence: (lastTasks, newTasks) ->
     return true if !lastTasks
     return true if lastTasks.length != newTasks.length
@@ -49,7 +68,5 @@ class App.TaskbarWatcher extends App.Controller
       return true if !lastTasks[taskPosition] || !newTasks[taskPosition]
       return true if lastTasks[taskPosition].user_id != newTasks[taskPosition].user_id
       return true if lastTasks[taskPosition].changed != newTasks[taskPosition].changed
-      if lastTasks[taskPosition].last_contact
-        lastContact = new Date(new Date(lastTasks[taskPosition].last_contact).getTime() + 5 * 60000)
-        return true if new Date() > lastContact
+      return true if lastTasks[taskPosition].idle != newTasks[taskPosition].idle
     false

app/assets/javascripts/app/lib/app_post/task_manager.coffee

@@ -79,6 +79,10 @@ class App.TaskManager
     return if !_instance
     _instance.preferencesUnsubscribe(id)
 
+  @preferencesTrigger: (key) ->
+    return if !_instance
+    _instance.preferencesTrigger(key)
+
 class _taskManagerSingleton extends App.Controller
   @include App.LogInclude
 
@@ -93,7 +97,7 @@ class _taskManagerSingleton extends App.Controller
 
     @bind('taskbar:preferences', (data) =>
       @tasksPreferences[data.key] = data.preferences
-      @preferencesExecuteCallbacks(data.key)
+      @preferencesTrigger(data.key)
     )
 
   init: ->
@@ -228,7 +232,7 @@ class _taskManagerSingleton extends App.Controller
             delete ui.tasksToUpdate[params.key]
           ui.allTasksByKey[params.key] = @attributes()
           ui.tasksPreferences[params.key] = clone(@preferences)
-          ui.preferencesExecuteCallbacks(params.key)
+          ui.preferencesTrigger(params.key)
           for taskPosition of ui.allTasks
             if ui.allTasks[taskPosition] && ui.allTasks[taskPosition]['key'] is @key
               task = @attributes()
@@ -307,9 +311,11 @@ class _taskManagerSingleton extends App.Controller
 
   # show task content
   show: (key, params_app) =>
-    controller = @workers[ key ]
+    controller = @workers[key]
     @shownStore[key] = true
 
+    @preferencesTrigger(key)
+
     domKey = @domID(key)
     domStoreItem = @domStore[domKey]
     if !@$("##{domKey}").get(0) && domStoreItem && domStoreItem.el
@@ -344,7 +350,7 @@ class _taskManagerSingleton extends App.Controller
 
   # hide task content
   hide: (key) =>
-    controller = @workers[ key ]
+    controller = @workers[key]
     @shownStore[key] = false
 
     element = @$("##{@domID(key)}")
@@ -459,6 +465,7 @@ class _taskManagerSingleton extends App.Controller
     if worker
       worker = undefined
     delete @workers[key]
+    delete @tasksPreferences[key]
     try
       element = @$("##{@domID(key)}")
       element.html('')
@@ -612,6 +619,7 @@ class _taskManagerSingleton extends App.Controller
     for task in tasks
       task.active = false
       @allTasksByKey[task.key] = task.attributes()
+      @tasksPreferences[task.key] = task.preferences
 
     # reopen tasks
     App.Event.trigger 'taskbar:init'
@@ -683,7 +691,7 @@ class _taskManagerSingleton extends App.Controller
       if _.isEmpty(value)
         delete @tasksPreferencesCallbacks[key]
 
-  preferencesExecuteCallbacks: (key) =>
+  preferencesTrigger: (key) =>
     return if !@tasksPreferencesCallbacks[key]
     return if !@tasksPreferences[key]
     for subscribeId, callback of @tasksPreferencesCallbacks[key]

app/models/taskbar.rb

@@ -47,16 +47,18 @@ class Taskbar < ApplicationModel
     # find other same open tasks
     preferences[:tasks] = []
     Taskbar.where(key: key).order(:created_at).each { |taskbar|
-      changed = if taskbar.id == id
-                  state_changed?
-                else
-                  taskbar.state_changed?
-                end
+      if taskbar.id == id
+        local_changed = state_changed?
+        local_last_contact = last_contact
+      else
+        local_changed = taskbar.state_changed?
+        local_last_contact = taskbar.last_contact
+      end
       task = {
         id: taskbar.id,
         user_id: taskbar.user_id,
-        last_contact: taskbar.last_contact,
-        changed: changed,
+        last_contact: local_last_contact,
+        changed: local_changed,
       }
       preferences[:tasks].push task
     }