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Contents
# frozen_string_literal: true
require "set"
module Launchy
#
# Use by either
#
# class Foo
# extend DescendantTracker
# end
#
# or
#
# class Foo
# class << self
# include DescendantTracker
# end
# end
#
# It will track all the classes that inherit from the extended class and keep
# them in a Set that is available via the 'children' method.
#
module DescendantTracker
def inherited(klass)
super
return unless klass.instance_of?(Class)
children << klass
end
#
# The list of children that are registered
#
def children
@children = [] unless defined? @children
@children
end
#
# Find one of the child classes by calling the given method
# and passing all the rest of the parameters to that method in
# each child
def find_child(method, *args)
children.find do |child|
Launchy.log "Checking if class #{child} is the one for #{method}(#{args.join(', ')})}"
child.send(method, *args)
end
end
end
end
Version data entries
4 entries across 3 versions & 2 rubygems