Tim's big refactoring of the Geometry modules. Fixes #590. All tests pass in FF (except the PanZoomBar stuff, which wasn't touched by this patch) and IE.

git-svn-id: http://svn.openlayers.org/trunk/openlayers@2931 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Handler/Path.js

@@ -79,10 +79,11 @@ OpenLayers.Handler.Path.prototype =
     },
     
     /**
-     * Add point to geometry
+     * Add point to geometry.  Send the point index to override
+     * the behavior of LinearRing that disregards adding duplicate points.
      */
     addPoint: function() {
-        this.line.addComponent(this.point.clone());
+        this.line.addComponent(this.point.clone(), this.line.components.length);
     },
     
     /**

lib/OpenLayers/Handler/Polygon.js

@@ -86,6 +86,22 @@ OpenLayers.Handler.Polygon.prototype =
         return this.polygon.clone();
     },
 
+    /**
+     * Handle double-clicks.  Finish the geometry and send it back
+     * to the control.
+     * 
+     * @param {Event} evt
+     */
+    dblclick: function(evt) {
+        if(!this.freehandMode(evt)) {
+            // remove the penultimate point
+            var index = this.line.components.length - 2;
+            this.line.removeComponent(this.line.components[index]);
+            this.finalize(this.line);
+        }
+        return false;
+    },
+
     /** @final @type String */
     CLASS_NAME: "OpenLayers.Handler.Polygon"
 });