Add State::release to compliment State::hold

State::release can be called to release all states of a type. Also State::hold
and State::release both now return a list of states they attempted to act on.

1 files changed, 7 insertions, 1 deletions

diff --git a/state.rb b/state.rb
index 2f80ab3..eb2498a 100644
--- a/state.rb
+++ b/state.rb
@@ -243,13 +243,19 @@ class State
 
 	# Hold all states of a class
 	def State.hold(type)
-		@@states.select{ |x| x.is_a? self }.each{ |x| x.hold(type) }
+		@@states.select{ |x| x.is_a? self }.map{ |x| x.hold(type) }
+	end
+
+	# Release all states of a class
+	def State.release(type)
+		@@states.select{ |x| x.is_a? self }.map{ |x| x.release(type) }
 	end
 
 private
 	# Set this state to true
 	def rise
 		return if @active
+		trace "Raising #{self}"
 		@deps.each{ |x| x.hold(self) }
 		self.class.rising_edge.call(params)
 		@active = true