From: Tilman Sauerbeck <tilman@code-monkey.de>
Date: Wed, 21 Sep 2005 15:56:55 +0000 (+0000)
Subject: Added Description#inherit.
X-Git-Tag: redact-0.1.5~4
X-Git-Url: http://git.code-monkey.de/?p=redact.git;a=commitdiff_plain;h=237a825fb05bc8d9128c8711aa46e112a5b91c62

Added Description#inherit.
---

diff --git a/ChangeLog b/ChangeLog
index 0d8db55..d443d03 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,7 +1,10 @@
 --
-$Id: ChangeLog 69 2005-09-19 20:17:07Z tilman $
+$Id: ChangeLog 70 2005-09-21 15:56:55Z tilman $
 ++
 
+2005-09-21 Tilman Sauerbeck (tilman at code-monkey de)
+        * lib/redact/part.rb: Added Description#inherit
+
 2005-09-19 Tilman Sauerbeck (tilman at code-monkey de)
         * lib/redact/part.rb: Fixed ImageDescription#set_border, which
           used the "right" argument for the "left" border
diff --git a/lib/redact/part.rb b/lib/redact/part.rb
index 692a487..3446de2 100644
--- a/lib/redact/part.rb
+++ b/lib/redact/part.rb
@@ -1,5 +1,5 @@
 #--
-# $Id: part.rb 69 2005-09-19 20:17:07Z tilman $
+# $Id: part.rb 70 2005-09-21 15:56:55Z tilman $
 #
 # Copyright (c) 2005 Tilman Sauerbeck (tilman at code-monkey de)
 #
@@ -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