require 'rss/1.0' require 'rss/dublincore' module RSS IMAGE_PREFIX = 'image' IMAGE_URI = 'http://web.resource.org/rss/1.0/modules/image/' RDF.install_ns(IMAGE_PREFIX, IMAGE_URI) IMAGE_ELEMENTS = [] %w(item favicon).each do |name| class_name = Utils.to_class_name(name) BaseListener.install_class_name(IMAGE_URI, name, "Image#{class_name}") IMAGE_ELEMENTS << "#{IMAGE_PREFIX}_#{name}" end module ImageModelUtils def validate_one_tag_name(name, tags) invalid = tags.find {|tag| tag != name} raise UnknownTagError.new(invalid, IMAGE_URI) if invalid raise TooMuchTagError.new(name, tag_name) if tags.size > 1 end end module ImageItemModel include ImageModelUtils extend BaseModel def self.append_features(klass) super klass.install_have_child_element("#{IMAGE_PREFIX}_item") end def image_validate(tags) validate_one_tag_name("item", tags) end class ImageItem < Element include RSS10 include DublinCoreModel @tag_name = "item" class << self def required_prefix IMAGE_PREFIX end def required_uri IMAGE_URI end end [ ["about", ::RSS::RDF::URI, true], ["resource", ::RSS::RDF::URI, false], ].each do |name, uri, required| install_get_attribute(name, uri, required) end %w(width height).each do |tag| full_name = "#{IMAGE_PREFIX}_#{tag}" install_text_element(full_name) BaseListener.install_get_text_element(IMAGE_URI, tag, "#{full_name}=") end def initialize(about=nil, resource=nil) super() @about = about @resource = resource end def full_name tag_name_with_prefix(IMAGE_PREFIX) end def to_s(need_convert=true, indent=calc_indent) rv = tag(indent) do |next_indent| [ other_element(false, next_indent), ] end rv = convert(rv) if need_convert rv end alias _image_width= image_width= def image_width=(new_value) if @do_validate self._image_width = Integer(new_value) else self._image_width = new_value.to_i end end alias _image_height= image_height= def image_height=(new_value) if @do_validate self._image_height = Integer(new_value) else self._image_height = new_value.to_i end end alias width= image_width= alias width image_width alias height= image_height= alias height image_height private def _tags [ [IMAGE_URI, 'width'], [IMAGE_URI, 'height'], ].delete_if do |uri, name| __send__(name).nil? end end def _attrs [ ["#{::RSS::RDF::PREFIX}:about", true, "about"], ["#{::RSS::RDF::PREFIX}:resource", false, "resource"], ] end def maker_target(target) target.image_item end def setup_maker_attributes(item) item.about = self.about item.resource = self.resource end end end module ImageFaviconModel include ImageModelUtils extend BaseModel def self.append_features(klass) super unless klass.class == Module klass.install_have_child_element("#{IMAGE_PREFIX}_favicon") end end def image_validate(tags) validate_one_tag_name("favicon", tags) end class ImageFavicon < Element include RSS10 include DublinCoreModel @tag_name = "favicon" class << self def required_prefix IMAGE_PREFIX end def required_uri IMAGE_URI end end [ ["about", ::RSS::RDF::URI, true], ["size", IMAGE_URI, true], ].each do |name, uri, required| install_get_attribute(name, uri, required) end alias image_size= size= alias image_size size def initialize(about=nil, size=nil) super() @about = about @size = size end def full_name tag_name_with_prefix(IMAGE_PREFIX) end def to_s(need_convert=true, indent=calc_indent) rv = tag(indent) do |next_indent| [ other_element(false, next_indent), ] end rv = convert(rv) if need_convert rv end private def _attrs [ ["#{::RSS::RDF::PREFIX}:about", true, "about"], ["#{IMAGE_PREFIX}:size", true, "size"], ] end def maker_target(target) target.image_favicon end def setup_maker_attributes(favicon) favicon.about = self.about favicon.size = self.size end end end class RDF class Channel; include ImageFaviconModel; end class Item; include ImageItemModel; end end end