class RhetButler::FilterResolver

Attributes

default_content_filters[RW]
default_note_filters[RW]
named_filter_lists[RW]
root_group[RW]

Public Instance Methods

get_filters(filter, used_names=nil) click to toggle source
# File lib/rhet-butler/filter-resolver.rb, line 18
def get_filters(filter, used_names=nil)
  case filter
  when String
    if !used_names.nil? and used_names.include?(filter)
      raise "Recursive filter list definitions: #{filter} already referenced in #{used_names}"
    end
    get_filters(named_filter_lists.fetch(filter), (used_names||[])+[filter]) do
      raise "No filter named #{filter}"
    end
  when Array
    filter.map{|item| get_filters(item)}.flatten
  else
    filter
  end
end
on_slide(slide) click to toggle source
# File lib/rhet-butler/filter-resolver.rb, line 34
def on_slide(slide)
  slide.content_filters = get_filters(slide.content_filters || default_content_filters)
  slide.html_classes += slide.content_filters.map do |filter|
    filter.html_class
  end

  slide.note_filters    = get_filters(slide.note_filters || default_note_filters)
  slide.html_classes += slide.content_filters.map do |filter|
    "note-" + filter.html_class unless filter.html_class.nil?
  end

  [ *slide.raw_content ].each do |content| #XXX This is how all content filtering should work
    case content
    when SlideContents
      content.filters = get_filters(content.filters || default_content_filters)
    end
  end
rescue
  puts "While processing #{slide}:"
  raise
end
setup() click to toggle source
# File lib/rhet-butler/filter-resolver.rb, line 9
def setup
  named_filter_lists.each_key do |name|
    named_filter_lists[name] = get_filters(named_filter_lists[name])
  end
  self.default_content_filters = get_filters(default_content_filters)
  self.default_note_filters = get_filters(default_note_filters)
  descend(@root_group, @root_group)
end