Added Description#inherit.

[redact.git] / lib / redact / part.rb

diff --git a/lib/redact/part.rb b/lib/redact/part.rb
index d285c19dba139d61cd8ce5dfcd5613b2bca2b426..3446de26c7d41b88007521d1fae4bfbd10f7d748 100644 (file)
--- a/lib/redact/part.rb
+++ b/lib/redact/part.rb
@@ -1,5 +1,5 @@
 #--
-# $Id: part.rb 68 2005-09-19 20:03:09Z tilman $
+# $Id: part.rb 70 2005-09-21 15:56:55Z tilman $
 #
 # Copyright (c) 2005 Tilman Sauerbeck (tilman at code-monkey de)
 #
@@ -203,13 +203,13 @@ module Redact
                attr_reader :rel, :to_id, :offset
 
                def initialize(rel, offset)
-                       @rel = [rel, rel]
+                       @rel = [rel.to_f, rel.to_f]
                        @to_id = [-1, -1]
                        @offset = [offset, offset]
                end
 
                def set_rel(x, y)
-                       @rel = [x, y]
+                       @rel = [x.to_f, y.to_f]
                end
 
                def set_offset(x, y)
@@ -245,6 +245,20 @@ module Redact
                        @color_class = ""
                end
 
+               def inherit(other)
+                       unless other.is_a?(Description)
+                               raise(ArgumentError, "Cannot inherit from description")
+                       end
+
+                       prot = ["@name", "@value"]
+
+                       (instance_variables - prot).each do |v|
+                               n = other.instance_variable_get(v.intern)
+                               n = n.dup rescue n
+                               instance_variable_set(v.intern, n)
+                       end
+               end
+
                def visible=(v)
                        @visible = (v == true)
                end