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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)
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 Item < Element
include RSS10
include DublinCoreModel
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 Favicon < Element
include RSS10
include DublinCoreModel
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
|
