gistfile1.coffee

class InviteFriendsUsecase


  execute: 
    bind('click', player.inviteFriends())



class model.Player
  inviteFriends: =>
    provideFriendsSelectedByMyself(invite)  
    
  invite: (newFriends) =>
    @friends += newFriends
   
  provideFriendsSelectedByMyself: (afterSelected) =>
    friends = [1, 2, 3, 4, 5]  #abstract provider, or fake array
    afterSelected(friends)