Module: JazzModel::ModeContext

Included in:
Scale
Defined in:
lib/jazz_model/mode_context.rb

Overview

Mode context is a module intended to be mixed in to classes requiring the notion of “mode context”. Right now the only class that uses this is scale. Mode context allows scales to take on a mode context which effectively offsets tone sequences to retrieve tones in the given scale mode.

  • in_mode(new_mode) - Sets the mode context to the specified mode (integer).

  • without_mode - Removes mode context.

Class Method Summary collapse

Class Method Details

.included(klass) ⇒ Object 



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# File 'lib/jazz_model/mode_context.rb', line 11

def self.included(klass)
  klass.class_eval do
    attr_accessor :mode

    def in_mode(value)
      if value.is_a?(String)
        mode_object = self.respond_to?(:modes) ? self.modes.find_by_name(value) : Mode.find_by_name(value)
        self.mode = mode_object.mode unless mode_object.nil?
      else
        self.mode = value
      end
      self
    end

    def without_mode
      self.mode = nil
      self
    end
  end
end