From 90933052aaeb9d1c0e3fb4dea910b57fa5a3fe23 Mon Sep 17 00:00:00 2001
From: euzuro <euzuro@metacarta.com>
Date: Thu, 6 Jul 2006 02:19:04 +0000
Subject: [PATCH] give Grid a clone() function.

git-svn-id: http://svn.openlayers.org/trunk/openlayers@894 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
---
 lib/OpenLayers/Layer/Grid.js | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/lib/OpenLayers/Layer/Grid.js b/lib/OpenLayers/Layer/Grid.js
index 2111d2f7fd..1345c6a583 100644
--- a/lib/OpenLayers/Layer/Grid.js
+++ b/lib/OpenLayers/Layer/Grid.js
@@ -47,6 +47,27 @@ OpenLayers.Layer.Grid.prototype =
         OpenLayers.Layer.HTTPRequest.prototype.destroy.apply(this, arguments); 
     },
 
+    /**
+     * @param {Object} obj
+     * 
+     * @returns An exact clone of this OpenLayers.Layer.Grid
+     * @type OpenLayers.Layer.Grid
+     */
+    clone: function (obj) {
+        
+        if (obj == null) {
+            obj = new OpenLayers.Layer.Grid(this.name,
+                                            this.url,
+                                            this.params,
+                                            this.options);
+        }
+        
+        //set any non-init vars here
+        
+        //get all additions from superclasses
+        return OpenLayers.Layer.HTTPRequest.prototype.clone.apply(this, [obj]);
+    },    
+
     /** When the layer is added to a map, then we can ask the map for
      *   its default tile size
      *