Module: Arrolio::GenericFlowBuilder::Lists

Included in:
Arrolio::GenericFlowBuilder
Defined in:
lib/arrolio/generic_flow_builder/lists.rb

Overview

Extracted emission seam: one module per content family, the same pattern as GenericAdapter's decomposition. The class keeps build(), dispatch, and shared helpers.

Instance Method Summary collapse

Instance Method Details

#default_marker(list, index, container: nil) ⇒ Object 



52
53
54
55
56
57
58
59
60
61
62
63
 
# File 'lib/arrolio/generic_flow_builder/lists.rb', line 52

def default_marker(list, index, container: nil)
  defaults = @rules.dig('list', 'defaults') || {}
  if list.ordered?
    format = defaults['ordered_marker'] || '%d.'
    format.sub('%d', (index + 1).to_s)
  else
    nested = @rules.dig('note', 'list') || {}
    return nested['bullet_marker'] if container == :note && nested['bullet_marker']

    defaults['bullet_marker'] || '■ '
  end
end

#flowable_for_list_content(content) ⇒ Object 



44
45
46
47
48
49
50
 
# File 'lib/arrolio/generic_flow_builder/lists.rb', line 44

def flowable_for_list_content(content)
  case content
  when Content::Paragraph then [paragraph_flowable(content)]
  when Content::List then [list_flowable(content)]
  else []
  end
end

#list_flowable(list, container: nil) ⇒ Object 



9
10
11
12
13
14
15
16
17
18
19
20
 
# File 'lib/arrolio/generic_flow_builder/lists.rb', line 9

def list_flowable(list, container: nil)
  items = list.items.each_with_index.map do |item, index|
    marker = item.marker.nil? ? default_marker(list, index, container: container) : item.marker
    body = item.content.flat_map do |content|
      flowable_for_list_content(content)
    end
    [marker, body]
  end
  Flowables::ListFlowable.new(items, kind: list.kind,
                                     style: resolve(list.style_id),
                                     **list_geometry(list.kind, container: container))
end

#list_geometry(kind, container: nil) ⇒ Object

List marker geometry (indent, marker column, inter-item spacing) is flavor configuration extracted from the flavor's XSL list styles — not engine policy. A kind-specific map (e.g. geometry.ordered) overrides the shared defaults — flavors whose bullets indent but whose ordered markers start at the margin (which also restores nested lists' depth).



29
30
31
32
33
34
35
36
37
38
39
40
41
42
 
# File 'lib/arrolio/generic_flow_builder/lists.rb', line 29

def list_geometry(kind, container: nil)
  config = @rules.dig('list', 'geometry') || {}
  config = config.merge(config[kind.to_s] || {})
  # Lists nested in note bodies sit deeper: the reference puts
  # 3.1.3.1's note bullets at +43.7pt from the note column
  # (marker x=143 from the page), pitch 17pt.
  config = config.merge(@rules.dig('note', 'list') || {}) if container == :note
  {
    marker_indent: config.fetch('marker_indent', 0.0).to_f,
    marker_width: config.fetch('marker_width', 18.0).to_f,
    body_indent: config.fetch('body_indent', 6.0).to_f,
    item_spacing: config.fetch('item_spacing', 0.0).to_f
  }
end