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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 = {}
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
21 entries across 21 versions & 1 rubygems