class Playbook::HTMLBlockCode

def preprocess(full_document)
  full_document.gsub(/\[component (.*)\]/) do
    @string = Regexp.last_match(1)
    @default_height = "160"
    @attr = ["", @default_height]
    # Set src from attributes
    @string.gsub(/src="(.*?)"/) do
      @attr[0] = Regexp.last_match(1)
    end
    # Set height from attributes
    @string.gsub(/height="(.*?)"/) do
      @attr[1] = (Regexp.last_match(1) || @default_height)
    end
    %(\n<div class="uix-component-frame"><iframe scrolling="no" id="component-preview" src="#{@attr[0]}" width="100%" height="#{@attr[1]}"></iframe><a href="#{@attr[0]}" target="_blank" class="uix-component-link">View component</a></div>\n)
  end
end