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Contents
require 'vedeu/output/presentation/colour'
require 'vedeu/output/presentation/styles'
require 'vedeu/output/presentation/style'
module Vedeu
# This module allows the sharing of presentation concerns between
# the models: Interface, View, Line and Stream.
#
module Presentation
include Vedeu::Presentation::Colour
include Vedeu::Presentation::Styles
# 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
# Returns a boolean indicating the model has a position
# attribute.
#
# @return [Boolean]
def position?
self.respond_to?(:position) && position.is_a?(Vedeu::Geometry::Position)
end
# Renders the colour attributes of the receiver and yields (to
# then render the styles).
#
# @return [String]
def render_colour
"#{colour}#{yield}"
end
# @return [String]
def render_position
return yield unless position?
position.to_s { yield }
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}"
end
end # Presentation
end # Vedeu
Version data entries
5 entries across 5 versions & 1 rubygems