templates/helpers.rb in asciidoctor-revealjs-4.1.0 vs templates/helpers.rb in asciidoctor-revealjs-5.0.0.rc1

@@ -2,10 +2,12 @@
   # This helper file borrows from the Bespoke converter
   # https://github.com/asciidoctor/asciidoctor-bespoke
   require 'asciidoctor'
 end
 
+require 'json'
+
 # This module gets mixed in to every node (the context of the template) at the
 # time the node is being converted. The properties and methods in this module
 # effectively become direct members of the template.
 module Slim::Helpers
 
@@ -191,19 +193,13 @@
     end
   end
 
   def revealjs_dependencies(document, node, revealjsdir)
     dependencies = []
-    dependencies << "{ src: '#{revealjsdir}/plugin/zoom-js/zoom.js', async: true }" unless (node.attr? 'revealjs_plugin_zoom', 'disabled')
-    dependencies << "{ src: '#{revealjsdir}/plugin/notes/notes.js', async: true }" unless (node.attr? 'revealjs_plugin_notes', 'disabled')
-    dependencies << "{ src: '#{revealjsdir}/plugin/markdown/marked.js', async: true }" if (node.attr? 'revealjs_plugin_marked', 'enabled')
-    dependencies << "{ src: '#{revealjsdir}/plugin/markdown/markdown.js', async: true }" if (node.attr? 'revealjs_plugin_markdown', 'enabled')
-    if (node.attr? 'revealjs_plugins') &&
-        !(revealjs_plugins_file = (node.attr 'revealjs_plugins', '').strip).empty? &&
-        !(revealjs_plugins_content = (File.read revealjs_plugins_file).strip).empty?
-      dependencies << revealjs_plugins_content
-    end
+    dependencies << "{ src: '#{revealjsdir}/plugin/zoom/zoom.js', async: true, callback: function () { Reveal.registerPlugin(RevealZoom) } }" unless (node.attr? 'revealjs_plugin_zoom', 'disabled')
+    dependencies << "{ src: '#{revealjsdir}/plugin/notes/notes.js', async: true, callback: function () { Reveal.registerPlugin(RevealNotes) } }" unless (node.attr? 'revealjs_plugin_notes', 'disabled')
+    dependencies << "{ src: '#{revealjsdir}/plugin/search/search.js', async: true, callback: function () { Reveal.registerPlugin(RevealSearch) } }" if (node.attr? 'revealjs_plugin_search', 'enabled')
     dependencies.join(",\n      ")
   end
 
 
   # Between delimiters (--) is code taken from asciidoctor-bespoke 1.0.0.alpha.1
@@ -276,9 +272,87 @@
   def yield_content key, opts = {}
     if (defined? @content) && (blks = (opts.fetch :drain, true) ? (@content.delete key) : @content[key])
       blks.map {|b| b.call }.join
     end
     nil
+  end
+
+  # Copied from asciidoctor/lib/asciidoctor/converter/semantic-html5.rb which is not yet shipped
+  # @todo remove this code when the new converter becomes available in the main gem
+  def generate_authors node
+    return if node.authors.empty?
+
+    if node.authors.length == 1
+      %(<p class="byline">
+#{format_author node, node.authors.first}
+</p>)
+    else
+      result = ['<ul class="byline">']
+      node.authors.each do |author|
+        result << "<li>#{format_author node, author}</li>"
+      end
+      result << '</ul>'
+      result.join Asciidoctor::LF
+    end
+  end
+
+  # Copied from asciidoctor/lib/asciidoctor/converter/semantic-html5.rb which is not yet shipped
+  # @todo remove this code when the new converter becomes available in the main gem
+  def format_author node, author
+    in_context 'author' do
+      %(<span class="author">#{node.sub_replacements author.name}#{author.email ? %( #{node.sub_macros author.email}) : ''}</span>)
+    end
+  end
+
+  # Copied from asciidoctor/lib/asciidoctor/converter/semantic-html5.rb which is not yet shipped
+  # @todo remove this code when the new converter becomes available in the main gem
+  def in_context name
+    (@convert_context ||= []).push name
+    result = yield
+    @convert_context.pop
+    result
+  end
+
+  STEM_EQNUMS_AMS = 'ams'
+  STEM_EQNUMS_NONE = 'none'
+  STEM_EQNUMS_VALID_VALUES = [
+    STEM_EQNUMS_NONE,
+    STEM_EQNUMS_AMS,
+    'all'
+  ]
+
+  MATHJAX_VERSION = '3.2.0'
+
+  # Generate the Mathjax markup to process STEM expressions
+  # @param cdn_base [String]
+  # @return [String]
+  def generate_stem(cdn_base)
+    if attr?(:stem)
+      eqnums_val = attr('eqnums', STEM_EQNUMS_NONE).downcase
+      unless STEM_EQNUMS_VALID_VALUES.include?(eqnums_val)
+        eqnums_val = STEM_EQNUMS_AMS
+      end
+      mathjax_configuration = {
+        tex: {
+          inlineMath: [Asciidoctor::INLINE_MATH_DELIMITERS[:latexmath]],
+          displayMath: [Asciidoctor::BLOCK_MATH_DELIMITERS[:latexmath]],
+          processEscapes: false,
+          tags: eqnums_val,
+        },
+        options: {
+          ignoreHtmlClass: 'nostem|nolatexmath'
+        },
+        asciimath: {
+          delimiters: [Asciidoctor::BLOCK_MATH_DELIMITERS[:asciimath]],
+        },
+        loader: {
+          load: ['input/asciimath', 'output/chtml', 'ui/menu']
+        }
+      }
+      mathjaxdir = attr('mathjaxdir', "#{cdn_base}/mathjax/#{MATHJAX_VERSION}/es5")
+      %(<script>window.MathJax = #{JSON.generate(mathjax_configuration)};</script>) +
+      %(<script async src="#{mathjaxdir}/tex-mml-chtml.js"></script>)
+    end
   end
   #--
 end
 
 # More custom functions can be added in another namespace if required