Contents

require 'vedeu/output/presentation/colour'
require 'vedeu/output/presentation/style'

module Vedeu

  # This module allows the sharing of presentation concerns between the models:
  # Interface, Line and Stream.
  #
  module Presentation

    include Vedeu::Presentation::Colour
    include Vedeu::Presentation::Style

    # Converts the colours and styles to escape sequences, and when the parent
    # model has previously set the colour and style, reverts back to that for
    # consistent formatting.
    #
    # @return [String] An escape sequence with value interpolated.
    def to_s
      render_position { render_colour { render_style { value } } }
    end
    alias_method :to_str, :to_s

    private

    # Renders the colour attributes of the receiver and yields (to then render
    # the styles).
    #
    # @return [String]
    def render_colour
      [colour, yield].join
    end

    # @return [String]
    def render_position
      if self.respond_to?(:position) && position.is_a?(Vedeu::Position)
        position.to_s { yield }

      else
        yield

      end
    end

    # Renders the style attributes of the receiver and yields (to then render
    # the next model, or finally, the content).
    #
    # @return [String]
    def render_style
      [style, yield].join
    end

  end # Presentation

end # Vedeu

Version data entries

1 entries across 1 versions & 1 rubygems

Version	Path
vedeu-0.5.2	lib/vedeu/output/presentation.rb