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# File 'lib/rss/trackback.rb', line 30
def append_features(klass)
super
unless klass.class == Module
klass.module_eval {include TrackBackUtils}
klass.install_must_call_validator(TRACKBACK_PREFIX, TRACKBACK_URI)
%w(ping).each do |name|
var_name = "#{TRACKBACK_PREFIX}_#{name}"
klass_name = "TrackBack#{Utils.to_class_name(name)}"
klass.install_have_child_element(name, TRACKBACK_URI, "?", var_name)
klass.module_eval(<<-EOC, __FILE__, __LINE__)
remove_method :#{var_name}
def #{var_name}
@#{var_name} and @#{var_name}.value
end
remove_method :#{var_name}=
def #{var_name}=(value)
@#{var_name} = Utils.new_with_value_if_need(#{klass_name}, value)
end
EOC
end
[%w(about s)].each do |name, postfix|
var_name = "#{TRACKBACK_PREFIX}_#{name}"
klass_name = "TrackBack#{Utils.to_class_name(name)}"
klass.install_have_children_element(name, TRACKBACK_URI, "*",
var_name)
klass.module_eval(<<-EOC, __FILE__, __LINE__)
remove_method :#{var_name}
def #{var_name}(*args)
if args.empty?
@#{var_name}.first and @#{var_name}.first.value
else
ret = @#{var_name}.__send__("[]", *args)
if ret.is_a?(Array)
ret.collect {|x| x.value}
else
ret.value
end
end
end
remove_method :#{var_name}=
remove_method :set_#{var_name}
def #{var_name}=(*args)
if args.size == 1
item = Utils.new_with_value_if_need(#{klass_name}, args[0])
@#{var_name}.push(item)
else
new_val = args.last
if new_val.is_a?(Array)
new_val = new_value.collect do |val|
Utils.new_with_value_if_need(#{klass_name}, val)
end
else
new_val = Utils.new_with_value_if_need(#{klass_name}, new_val)
end
@#{var_name}.__send__("[]=", *(args[0..-2] + [new_val]))
end
end
alias set_#{var_name} #{var_name}=
EOC
end
end
end
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