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Diffstat (limited to 'lib/banzai/filter/color_filter.rb')
-rw-r--r-- | lib/banzai/filter/color_filter.rb | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/lib/banzai/filter/color_filter.rb b/lib/banzai/filter/color_filter.rb new file mode 100644 index 00000000000..6ab29ac281f --- /dev/null +++ b/lib/banzai/filter/color_filter.rb @@ -0,0 +1,31 @@ +module Banzai + module Filter + # HTML filter that renders `color` followed by a color "chip". + # + class ColorFilter < HTML::Pipeline::Filter + COLOR_CHIP_CLASS = 'gfm-color_chip'.freeze + + def call + doc.css('code').each do |node| + color = ColorParser.parse(node.content) + node << color_chip(color) if color + end + + doc + end + + private + + def color_chip(color) + checkerboard = doc.document.create_element('span', class: COLOR_CHIP_CLASS) + chip = doc.document.create_element('span', style: inline_styles(color: color)) + + checkerboard << chip + end + + def inline_styles(color:) + "background-color: #{color};" + end + end + end +end |