class OmniAuth::Form

def self.build(options = {}, &block) 

def self.build(options = {}, &block)
  form = OmniAuth::Form.new(options)
  if block.arity > 0
    yield form
  else
    form.instance_eval(&block)
  end
  form
end

def button(text) 

def button(text)
  @with_custom_button = true
  @html << "\n<button type='submit'>#{text}</button>"
end

def css 

def css
  "\n<style type='text/css'>#{OmniAuth.config.form_css}</style>"
end

def fieldset(legend, options = {}, &block) 

def fieldset(legend, options = {}, &block)
  @html << "\n<fieldset#{" style='#{options[:style]}'" if options[:style]}#{" id='#{options[:id]}'" if options[:id]}>\n  <legend>#{legend}</legend>\n"
  instance_eval(&block)
  @html << "\n</fieldset>"
  self
end

def footer 

def footer
  return self if @footer
  @html << "\n<button type='submit'>Connect</button>" unless @with_custom_button
  @html << <<-HTML
  </form>
  </body>
  </html>
  HTML
  @footer = true
  self
end

def header(title, header_info) 

def header(title, header_info)
  @html << <<-HTML
  <!DOCTYPE html>
  <html>
  <head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
    <title>#{title}</title>
    #{css}
    #{header_info}
  </head>
  <body>
  <h1>#{title}</h1>
  <form method='#{options[:method]}' #{"action='#{options[:url]}' " if options[:url]}noValidate='noValidate'>
  HTML
  self
end

def html(html) 

def html(html)
  @html << html
end

def initialize(options = {}) 

def initialize(options = {})
  options[:title] ||= 'Authentication Info Required'
  options[:header_info] ||= ''
  options[:method] ||= 'post'
  self.options = options
  @html = +'' # unary + string allows it to be mutable if strings are frozen
  @with_custom_button = false
  @footer = nil
  header(options[:title], options[:header_info])
end

def input_field(type, name) 

def input_field(type, name)
  @html << "\n<input type='#{type}' id='#{name}' name='#{name}'/>"
  self
end

def label_field(text, target) 

def label_field(text, target)
  @html << "\n<label for='#{target}'>#{text}:</label>"
  self
end

def password_field(label, name) 

def password_field(label, name)
  label_field(label, name)
  input_field('password', name)
  self
end

def text_field(label, name) 

def text_field(label, name)
  label_field(label, name)
  input_field('text', name)
  self
end

def to_html 

def to_html
  footer
  @html
end

def to_response 

def to_response
  footer
  Rack::Response.new(@html, 200, 'content-type' => 'text/html').finish
end