Class: EideticRML::PageBuilder

Inherits:
Object
  • Object
show all
Defined in:
lib/erml.rb

Instance Method Summary collapse

Constructor Details

#initialize(doc) ⇒ PageBuilder

Returns a new instance of PageBuilder.



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# File 'lib/erml.rb', line 46

def initialize(doc)
  @stack = [doc]
  @tag_aliases = {}
  EideticRML::STANDARD_ALIASES.each do |a|
    a = a.dup
    define(a.delete('id'), a['tag'], a)
  end
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(id, *args, &block) ⇒ Object 



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# File 'lib/erml.rb', line 59

def method_missing(id, *args, &block)
  if current.respond_to?(id)
    current.send(id, *args)
    return current
  else
    tag, attrs = @tag_aliases[id.to_s] || [id.to_s, {}]
    attrs = attrs.merge(fix_attrs(args.first))
    attrs['tag'] = id unless tag == id
    factory = Widgets::StdWidgetFactory.instance # TODO: select factory by namespace
    raise ArgumentError, "Unknown tag: #{tag}." unless factory.has_widget?(tag)
    widget = factory.make_widget(tag, current, attrs)
    @stack.push(widget)
    result = if block_given?
      yield
      current
    else
      self.clone
    end
    @stack.pop
    return result
  end
end

Instance Method Details

#define(new_tag, old_tag, attrs) ⇒ Object 



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# File 'lib/erml.rb', line 82

def define(new_tag, old_tag, attrs)
  @tag_aliases[new_tag.to_s] = [old_tag.to_s, attrs.clone.freeze]
end

#initialize_copy(other) ⇒ Object 



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# File 'lib/erml.rb', line 55

def initialize_copy(other)
  @stack = @stack.clone
end