lib/simple_navigation/renderer/list.rb
module SimpleNavigation
module Renderer
# Renders an ItemContainer as a <ul> element and its containing items as
# <li> elements.
# It adds the 'selected' class to li element AND the link inside the li
# element that is currently active.
#
# If the sub navigation should be included (based on the level and
# expand_all options), it renders another <ul> containing the sub navigation
# inside the active <li> element.
#
# By default, the renderer sets the item's key as dom_id for the rendered
# <li> element unless the config option <tt>autogenerate_item_ids</tt> is
# set to false.
# The id can also be explicitely specified by setting the id in the
# html-options of the 'item' method in the config/navigation.rb file.
class List < SimpleNavigation::Renderer::Base
def render(item_container)
if skip_if_empty? && item_container.empty?
''
else
tag = options[:ordered] ? :ol : :ul
content = list_content(item_container)
content_tag(tag, content, item_container.dom_attributes)
end
end
private
def list_content(item_container)
item_container.items.map { |item|
li_options = item.html_options.except(:link)
li_content = tag_for(item)
if include_sub_navigation?(item)
li_content << render_sub_navigation_for(item)
end
content_tag(:li, li_content, li_options)
}.join
end
end
end
end