1  module MenuRenderer
   2 
   3    def exclude(*type_names)
   4      @excluded_class_names ||= []
   5      @excluded_class_names.concat(type_names).uniq!
   6    end
   7    module_function :exclude
   8 
   9    def excluded_class_names
  10      MenuRenderer.instance_variable_get(:@excluded_class_names)
  11    end
  12 
  13    module_function :excluded_class_names
  14    public :excluded_class_names
  15 
  16    def view=(val)
  17      @view = val
  18    end
  19 
  20    def view
  21      @view
  22    end
  23 
  24    def additional_menu_features?
  25      @additional_menu_features ||= (menu_renderer_module_name != 'MenuRenderer' && Object.const_defined?(menu_renderer_module_name))
  26    end
  27 
  28    def menu_renderer_module_name
  29      simple_name = self.class_name.to_s.sub('Page','')
  30      "#{simple_name}MenuRenderer"
  31    end
  32 
  33    def menu_renderer_modules
  34      [Object.const_get(menu_renderer_module_name)]
  35    end
  36 
  37    def allowed_child_classes
  38      (allowed_children_cache.to_s.split(',') - Array(excluded_class_names)).map do |name|
  39        begin
  40          name.constantize
  41        rescue LoadError, NameError => e
  42          nil
  43        end
  44      end.compact
  45    end
  46 
  47 
  48    def default_child_item
  49      menu_item(default_child)
  50    end
  51 
  52    def separator_item
  53      view.content_tag :li, '', :class => 'separator'
  54    end
  55 
  56    def child_items
  57      (allowed_child_classes - [self.class.default_child]).map do |child|
  58        menu_item(child)
  59      end
  60    end
  61 
  62    def menu_items
  63      [default_child_item, separator_item] + child_items
  64    end
  65 
  66    def menu_list
  67      view.content_tag :ul, menu_items.join, :class => 'menu', :id => "allowed_children_#{id}"
  68    end
  69 
  70    def remove_link
  71      view.link_to view.image('minus') + ' ' + I18n.t('remove'), view.remove_admin_page_url(self), :class => "action"
  72    end
  73 
  74    def remove_option
  75      remove_link
  76    end
  77 
  78    def add_child_disabled?
  79      allowed_child_classes.size == 0
  80    end
  81 
  82    def disabled_add_child_link
  83      view.content_tag :span, view.image('plus_disabled') + ' ' + I18n.t('add_child'), :class => 'action disabled'
  84    end
  85 
  86    def add_child_link
  87      view.link_to((view.image('plus') + ' ' + I18n.t('add_child')), view.new_admin_page_child_path(self, :page_class => default_child.name), :class => "action")
  88    end
  89 
  90    def add_child_link_with_menu_hook
  91      view.link_to((view.image('plus') + ' ' + I18n.t('add_child')), "#allowed_children_#{id}", :class => "action dropdown")
  92    end
  93 
  94    def add_child_menu
  95      menu_list
  96    end
  97 
  98    def add_child_link_with_menu
  99      add_child_link_with_menu_hook + add_child_menu
 100    end
 101 
 102    def add_child_option
 103      if add_child_disabled?
 104        disabled_add_child_link
 105      else
 106        if allowed_child_classes.size == 1
 107          add_child_link
 108        else
 109          add_child_link_with_menu
 110        end
 111      end
 112    end
 113 
 114    private
 115 
 116    def clean_page_description(page_class)
 117      page_class.description.to_s.strip.gsub(/\t/,'').gsub(/\s+/,' ')
 118    end
 119 
 120    def menu_item(child_class)
 121      view.content_tag(:li, menu_link(child_class))
 122    end
 123 
 124    def menu_link(child_class)
 125      title = clean_page_description(child_class)
 126      path = view.new_admin_page_child_path(self, :page_class => child_class.name)
 127      text = link_text_for_child_class(child_class.name)
 128      view.link_to(text, path, :title => title)
 129    end
 130    
 131    def link_text_for_child_class(given_class_name)
 132      translation_key = if given_class_name == 'Page' || given_class_name.blank?
 133        'normal_page'
 134      else
 135        given_class_name.sub('Page','').underscore
 136      end
 137      fallback = given_class_name == 'Page' ? 'Page' : given_class_name.sub('Page','').titleize
 138      I18n.t(translation_key, :default => fallback)
 139    end
 140  en