lib/sugar-high/properties.rb in sugar-high-0.6.3 vs lib/sugar-high/properties.rb in sugar-high-0.7.0

@@ -1,40 +1,40 @@
 # From: http://www.infoq.com/articles/properties-metaprogramming
 
-module Properties  
-  def self.extended(base) 
+module Properties
+  def self.extended(base)
     base.class_eval %{
-      def fire_event_for(sym, arg) 
+      def fire_event_for(sym, arg)
         return if !@listener[sym]
-        @listener[sym].each {|l| l.call(arg) } 
-      end 
+        @listener[sym].each {|l| l.call(arg) }
+      end
     }
   end
-  
+
   # def property(sym, &predicate)
   def property(sym, predicate=nil)
     define_method(sym) do
       instance_variable_get("@#{sym}")
     end
-  
+
     define_method("#{sym}=") do |arg|
       return if !predicate.call(arg) if predicate
       instance_variable_set("@#{sym}", arg)
       fire_event_for(sym, arg)
     end
-  
-    define_method("add_#{sym}_listener") do |x| 
+
+    define_method("add_#{sym}_listener") do |x|
       @listener ||= {}
       @listener[sym] ||= []
       @listener[sym] << x
     end
-    
-    define_method("remove_#{sym}_listener") do |x| 
+
+    define_method("remove_#{sym}_listener") do |x|
       return if !@listener[sym]
       @listener[sym].delete_at(x)
     end
   end
-  
+
   def is(test)
     lambda {|val| test === val }
   end
 end