class Build::Files::Handle

def changed!
	@on_changed.call(@state) if @state.update!
end

def commit!
	@state.update!
end

def directories
	@state.files.roots
end

def initialize(monitor, files, &block)
	@monitor = monitor
	@state = State.new(files)
	@on_changed = block
end

def remove!
	monitor.delete(self)
end