module FlashHelper

  # Will output all flashes in the FlashHash into DIV elements containing the
  # FlashHash value as content and the FlashHash key as the class name. Some
  # class names which have styles associated with them are:
  #  * information / info
  #  * success
  #  * warning
  #  * error
  def flash_messages
    return if flash.empty?
    a = []
    a << flash.inject('') { |t,(k,v)| t << flash_message(k, v) }
    a << tag(:hr, :class => 'hide')
    content_tag :div, :id => 'header_flash_messages', :class => 'clear' do
      a.join("\n")
    end
  end

  # Renders a single flash message.
  def flash_message(type, message)
    render :partial => '/layouts/partials/flash_message', :locals => {
      :type => type.to_s,
      :message => message }
  end

end