diff options
Diffstat (limited to 'lib/banzai/filter/kroki_filter.rb')
| -rw-r--r-- | lib/banzai/filter/kroki_filter.rb | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/lib/banzai/filter/kroki_filter.rb b/lib/banzai/filter/kroki_filter.rb index 3803302c324..9aa2afce5a8 100644 --- a/lib/banzai/filter/kroki_filter.rb +++ b/lib/banzai/filter/kroki_filter.rb @@ -6,8 +6,10 @@ require "asciidoctor/extensions/asciidoctor_kroki/extension" module Banzai module Filter # HTML that replaces all diagrams supported by Kroki with the corresponding img tags. - # + # If the source content is large then the hidden attribute is added to the img tag. class KrokiFilter < HTML::Pipeline::Filter + MAX_CHARACTER_LIMIT = 2000 + def call return doc unless settings.kroki_enabled @@ -21,7 +23,12 @@ module Banzai diagram_format = "svg" doc.xpath(xpath).each do |node| diagram_type = node.parent['lang'] - img_tag = Nokogiri::HTML::DocumentFragment.parse(%(<img src="#{create_image_src(diagram_type, diagram_format, node.content)}"/>)) + diagram_src = node.content + image_src = create_image_src(diagram_type, diagram_format, diagram_src) + lazy_load = diagram_src.length > MAX_CHARACTER_LIMIT + other_attrs = lazy_load ? "hidden" : "" + + img_tag = Nokogiri::HTML::DocumentFragment.parse(%(<img class="js-render-kroki" src="#{image_src}" #{other_attrs} />)) node.parent.replace(img_tag) end |