Upgrade to ExtJS 3.3.1 - Released 11/30/2010

[extjs.git] / src / state / Provider.js

diff --git a/src/state/Provider.js b/src/state/Provider.js
index 8c8c78a..fab85ba 100644 (file)
--- a/src/state/Provider.js
+++ b/src/state/Provider.js
@@ -1,8 +1,8 @@
 /*!
- * Ext JS Library 3.2.1
- * Copyright(c) 2006-2010 Ext JS, Inc.
- * licensing@extjs.com
- * http://www.extjs.com/license
+ * Ext JS Library 3.3.1
+ * Copyright(c) 2006-2010 Sencha Inc.
+ * licensing@sencha.com
+ * http://www.sencha.com/license
  */
 /**
  * @class Ext.state.Provider
@@ -10,19 +10,21 @@
  * for encoding and decoding <b>typed</b> variables including dates and defines the
  * Provider interface.
  */
-Ext.state.Provider = function(){
-    /**
-     * @event statechange
-     * Fires when a state change occurs.
-     * @param {Provider} this This state provider
-     * @param {String} key The state key which was changed
-     * @param {String} value The encoded value for the state
-     */
-    this.addEvents("statechange");
-    this.state = {};
-    Ext.state.Provider.superclass.constructor.call(this);
-};
-Ext.extend(Ext.state.Provider, Ext.util.Observable, {
+Ext.state.Provider = Ext.extend(Ext.util.Observable, {
+    
+    constructor : function(){
+        /**
+         * @event statechange
+         * Fires when a state change occurs.
+         * @param {Provider} this This state provider
+         * @param {String} key The state key which was changed
+         * @param {String} value The encoded value for the state
+         */
+        this.addEvents("statechange");
+        this.state = {};
+        Ext.state.Provider.superclass.constructor.call(this);
+    },
+    
     /**
      * Returns the current value for a key
      * @param {String} name The key name
@@ -59,31 +61,48 @@ Ext.extend(Ext.state.Provider, Ext.util.Observable, {
      * @return {Mixed} The decoded value
      */
     decodeValue : function(cookie){
-        var re = /^(a|n|d|b|s|o)\:(.*)$/;
-        var matches = re.exec(unescape(cookie));
-        if(!matches || !matches[1]) return; // non state cookie
-        var type = matches[1];
-        var v = matches[2];
+        /**
+         * a -> Array
+         * n -> Number
+         * d -> Date
+         * b -> Boolean
+         * s -> String
+         * o -> Object
+         * -> Empty (null)
+         */
+        var re = /^(a|n|d|b|s|o|e)\:(.*)$/,
+            matches = re.exec(unescape(cookie)),
+            all,
+            type,
+            v,
+            kv;
+        if(!matches || !matches[1]){
+            return; // non state cookie
+        }
+        type = matches[1];
+        v = matches[2];
         switch(type){
-            case "n":
+            case 'e':
+                return null;
+            case 'n':
                 return parseFloat(v);
-            case "d":
+            case 'd':
                 return new Date(Date.parse(v));
-            case "b":
-                return (v == "1");
-            case "a":
-                var all = [];
+            case 'b':
+                return (v == '1');
+            case 'a':
+                all = [];
                 if(v != ''){
                     Ext.each(v.split('^'), function(val){
                         all.push(this.decodeValue(val));
                     }, this);
                 }
                 return all;
-           case "o":
-                var all = {};
+           case 'o':
+                all = {};
                 if(v != ''){
                     Ext.each(v.split('^'), function(val){
-                        var kv = val.split('=');
+                        kv = val.split('=');
                         all[kv[0]] = this.decodeValue(kv[1]);
                     }, this);
                 }
@@ -99,30 +118,36 @@ Ext.extend(Ext.state.Provider, Ext.util.Observable, {
      * @return {String} The encoded value
      */
     encodeValue : function(v){
-        var enc;
-        if(typeof v == "number"){
-            enc = "n:" + v;
-        }else if(typeof v == "boolean"){
-            enc = "b:" + (v ? "1" : "0");
+        var enc,
+            flat = '',
+            i = 0,
+            len,
+            key;
+        if(v == null){
+            return 'e:1';    
+        }else if(typeof v == 'number'){
+            enc = 'n:' + v;
+        }else if(typeof v == 'boolean'){
+            enc = 'b:' + (v ? '1' : '0');
         }else if(Ext.isDate(v)){
-            enc = "d:" + v.toGMTString();
+            enc = 'd:' + v.toGMTString();
         }else if(Ext.isArray(v)){
-            var flat = "";
-            for(var i = 0, len = v.length; i < len; i++){
+            for(len = v.length; i < len; i++){
                 flat += this.encodeValue(v[i]);
-                if(i != len-1) flat += "^";
+                if(i != len - 1){
+                    flat += '^';
+                }
             }
-            enc = "a:" + flat;
-        }else if(typeof v == "object"){
-            var flat = "";
-            for(var key in v){
-                if(typeof v[key] != "function" && v[key] !== undefined){
-                    flat += key + "=" + this.encodeValue(v[key]) + "^";
+            enc = 'a:' + flat;
+        }else if(typeof v == 'object'){
+            for(key in v){
+                if(typeof v[key] != 'function' && v[key] !== undefined){
+                    flat += key + '=' + this.encodeValue(v[key]) + '^';
                 }
             }
-            enc = "o:" + flat.substring(0, flat.length-1);
+            enc = 'o:' + flat.substring(0, flat.length-1);
         }else{
-            enc = "s:" + v;
+            enc = 's:' + v;
         }
         return escape(enc);
     }