Module: HTAuth::DescendantTracker

Included in:
Algorithm
Defined in:
lib/htauth/descendant_tracker.rb

Overview

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.

Instance Method Summary collapse

Instance Method Details

#children ⇒ Object

The list of children that are registered



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# File 'lib/htauth/descendant_tracker.rb', line 29

def children
  unless defined? @children
    @children = Array.new
  end
  return @children
end

#find_child(method, *args) ⇒ Object

find the child that returns truthy for then given method and parameters



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# File 'lib/htauth/descendant_tracker.rb', line 40

def find_child( method, *args )
  children.find do |child|
    child.send( method, *args )
  end
end

#inherited(klass) ⇒ Object 



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# File 'lib/htauth/descendant_tracker.rb', line 21

def inherited( klass )
  return unless klass.instance_of?( Class )
  self.children << klass
end