Change Protocol/Script registry to object

lib/OpenLayers/Protocol/Script.js

@@ -54,20 +54,12 @@ OpenLayers.Protocol.Script = OpenLayers.Class(OpenLayers.Protocol, {
     callback: null,
 
     /**
-     * APIProperty: scope
-     * {Object} Optional ``this`` object for the callback. Read-only, set 
-     *     through the options passed to the constructor.
+     * APIProperty: callbackTemplate
+     * {String} Template for creating a unique callback function name
+     * for the registry. Should include ${id}.
+     * Default is "OpenLayers.Protocol.Script.registry[${id}]".
      */
-    scope: null,
-
-    /**
-     * APIProperty: format
-     * {<OpenLayers.Format>} Format for parsing features.  Default is an 
-     *     <OpenLayers.Format.GeoJSON> format.  If an alternative is provided,
-     *     the format's read method must take an object and return an array
-     *     of features.
-     */
-    format: null,
+    callbackTemplate: "OpenLayers.Protocol.Script.registry[${id}]",
 
     /**
      * APIProperty: callbackKey
@@ -88,6 +80,22 @@ OpenLayers.Protocol.Script = OpenLayers.Class(OpenLayers.Protocol, {
      */
     callbackPrefix: "",
 
+    /**
+     * APIProperty: scope
+     * {Object} Optional ``this`` object for the callback. Read-only, set 
+     *     through the options passed to the constructor.
+     */
+    scope: null,
+
+    /**
+     * APIProperty: format
+     * {<OpenLayers.Format>} Format for parsing features.  Default is an 
+     *     <OpenLayers.Format.GeoJSON> format.  If an alternative is provided,
+     *     the format's read method must take an object and return an array
+     *     of features.
+     */
+    format: null,
+
     /**
      * Property: pendingRequests
      * {Object} References all pending requests.  Property names are script 
@@ -212,7 +220,7 @@ OpenLayers.Protocol.Script = OpenLayers.Class(OpenLayers.Protocol, {
      */
     createRequest: function(url, params, callback) {
         var id = OpenLayers.Protocol.Script.register(callback);
-        var name = "OpenLayers.Protocol.Script.registry[" + id + "]";
+        var name = OpenLayers.String.format(this.callbackTemplate, {id: id});
         params = OpenLayers.Util.extend({}, params);
         params[this.callbackKey] = this.callbackPrefix + name;
         url = OpenLayers.Util.urlAppend(
@@ -333,7 +341,7 @@ OpenLayers.Protocol.Script = OpenLayers.Class(OpenLayers.Protocol, {
 (function() {
     var o = OpenLayers.Protocol.Script;
     var counter = 0;
-    o.registry = [];
+    o.registry = {};
 
     /**
      * Function: OpenLayers.Protocol.Script.register
@@ -345,12 +353,11 @@ OpenLayers.Protocol.Script = OpenLayers.Class(OpenLayers.Protocol, {
      *     that is the JSON returned by the service.
      *
      * Returns:
-     * {Number} An identifier for retreiving the registered callback.
+     * {Number} An identifier for retrieving the registered callback.
      */
     o.register = function(callback) {
-        var id = ++counter;
+        var id = "c"+(++counter);
         o.registry[id] = function() {
-            o.unregister(id);
             callback.apply(this, arguments);
         };
         return id;