     on_treeData_change = ->
 
       #console.log 'tree-data-change!'
-
-      # give each Branch a UID ( to keep AngularJS happy )
-      for_each_branch (b,level)->
-        if not b.uid
-          b.uid = ""+Math.random()
-      console.log 'UIDs are set.'
-
-
-      # set all parents:
-      for_each_branch (b)->
-        if angular.isArray b.children
-          for child in b.children
-            child.parent_uid = b.uid
-
-
-      scope.tree_rows = []
-
+      
       #
       # if "children" is just a list of strings...
       # ...change them into objects:


module = angular.module 'angularBootstrapNavTree',[]

module.directive 'abnTree',['$timeout',($timeout)-> 

        else
          branch.children = []


      # give each Branch a UID ( to keep AngularJS happy )
      for_each_branch (b,level)->
        if not b.uid
          b.uid = ""+Math.random()
      console.log 'UIDs are set.'


      # set all parents:
      for_each_branch (b)->
        if angular.isArray b.children
          for child in b.children
            child.parent_uid = b.uid


      scope.tree_rows = []

      
      #
      # add_branch_to_list: recursively add one branch
