Contents

module Redwood

## Classic listener/broadcaster paradigm. Handles communication between various
## parts of Sup.
##
## Usage note: don't pass threads around. Neither thread nor message equality is
## defined anywhere in Sup beyond standard object equality. To communicate
## something about a particular thread, just pass a representative message from
## it around.
##
## (This assumes that no message will be a part of more than one thread within a
## single "view". Luckily, that's true.)

class UpdateManager
  include Singleton

  def initialize
    @targets = {}
    self.class.i_am_the_instance self
  end

  def register o; @targets[o] = true; end
  def unregister o; @targets.delete o; end

  def relay sender, type, *args
    meth = "handle_#{type}_update".intern
    @targets.keys.each { |o| o.send meth, sender, *args unless o == sender if o.respond_to? meth }
  end
end

end

Version data entries

6 entries across 6 versions & 1 rubygems

Version	Path
sup-0.8.1	lib/sup/update.rb
sup-0.7	lib/sup/update.rb
sup-0.5	lib/sup/update.rb
sup-0.6	lib/sup/update.rb
sup-0.4	lib/sup/update.rb
sup-0.8	lib/sup/update.rb