Class: Asciidoctor::Rhrev::TableCellMarkPropagationHtmlTreeprocessor

Inherits:
Extensions::Treeprocessor
  • Object
show all
Defined in:
lib/asciidoctor/rhrev/rhrev_html.rb

Overview

Table cells cannot carry an rhrev attribute of their own through normal AsciiDoc parsing: a plain (|) cell never parses its content as blocks at all, an attribute list there is just literal text; an AsciiDoc-style (a|) cell does parse its content as blocks, so [rhrev1-2="..."] before content parses and attaches, but to the first nested block, not the cell, and that nested block is not reachable from the outer document (its inner_document is a separate tree). Same limitation the PDF backend works around (Converter#propagate_cell_content_marks, converter.rb), for the same reason: neither Html5Converter#rollup_table_cell_revision_entries below (the revision-history side) nor Html5Converter#convert_table's role check (the CSS-bar side) can see a mark that never left the nested block.

Must run as its own treeprocessor, before ChangeBarsHtmlTreeprocessor, not lazily from Html5Converter#collect_all_entries at render time: treeprocessors all run before conversion starts, so if propagation happened later, ChangeBarsHtmlTreeprocessor would already have tagged the nested paragraph directly (it is a rollup context, tracked in its own right) using the mark's original, unpropagated location, before this ever got a chance to move it.

Copies any rhrev-prefixed attribute from a marked nested rollup-context node onto the enclosing cell, then strips it from the nested node, same as the PDF side: leaving it in place would tag both the cell and the nested paragraph independently, a redundant double border for what is really one mark on one piece of content.

Instance Method Summary collapse

Instance Method Details

#process(document) ⇒ Object 



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# File 'lib/asciidoctor/rhrev/rhrev_html.rb', line 35

def process document
  return document unless document.basebackend? 'html'
  prefix = document.attr 'revhistoryprefix', 'rhrev'

  document.find_by(context: :table).each do |table|
    cells = (table.rows[:head] + table.rows[:body]).flatten
    cells.each do |cell|
      next unless cell.style == :asciidoc
      inner = (cell.inner_document rescue nil)
      next unless inner

      inner.find_by { |node| Html5Converter::ROLLUP_CONTEXTS.include? node.context }.each do |node|
        attr_entries = (node.instance_variable_get(:@attributes) rescue nil)
        next if attr_entries.nil? || attr_entries.empty?

        attr_entries.keys.each do |key|
          key_str = key.to_s
          next unless key_str.start_with?(prefix)
          cell.set_attr key_str, attr_entries[key]
          node.remove_attr key_str
        end
      end
    end
  end
  document
end