Contents

# frozen_string_literal: true

module Thredded
  module IconHelper
    def shared_inline_svg(filename, **args)
      svg = content_tag :svg, **args do
        content_tag :use, '', 'xlink:href' => "##{thredded_icon_id(filename)}"
      end
      if (definition = define_svg_icons(filename))
        definition + svg
      else
        svg
      end
    end

    def define_svg_icons(*filenames)
      return if filenames.blank?
      sb = filenames.map do |filename|
        inline_svg_once(filename, id: thredded_icon_id(filename))
      end
      return if sb.compact.blank?
      content_tag :div, safe_join(sb), class: 'thredded--svg-definitions'
    end

    def inline_svg_once(filename, id:, **transform_params)
      return if @already_inlined_svg_ids&.include?(id)
      record_already_inlined_svg(filename, id)
      inline_svg_tag(filename, id: id, **transform_params)
    end

    private

    def record_already_inlined_svg(filename, id)
      if filename.is_a?(String) # in case it's an IO or other
        fail "Please use id: #{thredded_icon_id(filename)}" unless id == thredded_icon_id(filename)
      end
      @already_inlined_svg_ids ||= []
      @already_inlined_svg_ids << id
    end

    def thredded_icon_id(svg_filename)
      "thredded-#{File.basename(svg_filename, '.svg').dasherize}-icon"
    end
  end
end

Version data entries

5 entries across 5 versions & 1 rubygems

Version	Path
thredded-1.1.0	app/helpers/thredded/icon_helper.rb
thredded-1.0.1	app/helpers/thredded/icon_helper.rb
thredded-1.0.0	app/helpers/thredded/icon_helper.rb
thredded-0.16.16	app/helpers/thredded/icon_helper.rb
thredded-0.16.15	app/helpers/thredded/icon_helper.rb