lib/gumdrop/callbacks.rb in gumdrop-0.6.3 vs lib/gumdrop/callbacks.rb in gumdrop-0.6.4

@@ -7,14 +7,17 @@
         class_eval <<-EOF
           def #{name}(*args, &block)
             if block
               @_#{name} = [] if @_#{name}.nil?
               @_#{name} << block
-            elsif @_#{name}
+            elsif @_#{name} and !@_#{name}.nil?
               @_#{name}.each do |cb|
                 cb.call(*args)
               end
             end
+          end
+          def clear_#{name}()
+            @_#{name} = nil
           end
         EOF
       end
     end
   
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