lib/radiant/admin_ui.rb

   1 #TODO ok
   2
   3 require 'simpleton'
   4
   5 module Radiant
   6   class AdminUI
   7
   8     class DuplicateTabNameError < StandardError; end
   9
  10     class Tab
  11       attr_accessor :name, :url, :visibility
  12
  13       def initialize(name, url, options = {})
  14         @name, @url = name, url
  15         @visibility = [options[:for], options[:visibility]].flatten.compact
  16         @visibility = [:all] if @visibility.empty?
  17       end
  18
  19       def shown_for?(user)
  20         visibility.include?(:all) or
  21           visibility.any? { |role| user.send("#{role}?") }
  22       end
  23     end
  24
  25     class TabSet
  26       def initialize
  27         @tabs = []
  28       end
  29
  30       def add(name, url, options = {})
  31         options.symbolize_keys!
  32         before = options.delete(:before)
  33         after = options.delete(:after)
  34         tab_name = before || after
  35         if self[name]
  36           raise DuplicateTabNameError.new("duplicate tab name `#{name}'")
  37         else
  38           if tab_name
  39             index = @tabs.index(self[tab_name])
  40             index += 1 if before.nil?
  41             @tabs.insert(index, Tab.new(name, url, options))
  42           else
  43             @tabs << Tab.new(name, url, options)
  44           end
  45         end
  46       end
  47
  48       def remove(name)
  49         @tabs.delete(self[name])
  50       end
  51
  52       def size
  53         @tabs.size
  54       end
  55
  56       def [](index)
  57         if index.kind_of? Integer
  58           @tabs[index]
  59         else
  60           @tabs.find { |tab| tab.name == index }
  61         end
  62       end
  63
  64       def each
  65         @tabs.each { |t| yield t }
  66       end
  67
  68       def clear
  69         @tabs.clear
  70       end
  71
  72       include Enumerable
  73     end
  74
  75     include Simpleton
  76
  77     attr_accessor :tabs
  78
  79     def initialize
  80       @tabs = TabSet.new
  81     end
  82
  83   end
  84 end