+ def image
+ @image_element = first_image_element(document.root) unless defined? @image_element
+ @image_element.attr["src"] if @image_element
+ end
+
+ def image_alt
+ @image_element = first_image_element(document.root) unless defined? @image_element
+ @image_element.attr["alt"] if @image_element
+ end
+
+ def description
+ return @description if defined? @description
+
+ @description = first_truncated_text_content(document.root)
+ end
+
+ private
+
+ def document
+ @document ||= Kramdown::Document.new(self)
+ end
+
+ def first_image_element(element)
+ return element if image?(element) && element.attr["src"].present?
+
+ element.children.find do |child|
+ nested_image = first_image_element(child)
+ break nested_image if nested_image
+ end
+ end
+
+ def first_truncated_text_content(element)
+ if paragraph?(element)
+ truncated_text_content(element)
+ else
+ element.children.find do |child|
+ text = first_truncated_text_content(child)
+ break text unless text.nil?
+ end
+ end
+ end
+
+ def truncated_text_content(element)
+ text = ""
+
+ append_text = lambda do |child|
+ if child.type == :text
+ text << child.value
+ else
+ child.children.each do |c|
+ append_text.call(c)
+ break if text.length > MAX_DESCRIPTION_LENGTH
+ end
+ end
+ end
+ append_text.call(element)
+
+ return nil if text.blank?
+
+ text.truncate(MAX_DESCRIPTION_LENGTH)
+ end
+
+ def image?(element)
+ element.type == :img || (element.type == :html_element && element.value == "img")