/*!
- * Ext JS Library 3.0.3
- * Copyright(c) 2006-2009 Ext JS, LLC
- * licensing@extjs.com
- * http://www.extjs.com/license
- */
-/**
- * @class Ext.state.Provider
- * Abstract base class for state provider implementations. This class provides methods
- * for encoding and decoding typed 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, {
- /**
- * Returns the current value for a key
- * @param {String} name The key name
- * @param {Mixed} defaultValue A default value to return if the key's value is not found
- * @return {Mixed} The state data
- */
- get : function(name, defaultValue){
- return typeof this.state[name] == "undefined" ?
- defaultValue : this.state[name];
- },
-
- /**
- * Clears a value from the state
- * @param {String} name The key name
- */
- clear : function(name){
- delete this.state[name];
- this.fireEvent("statechange", this, name, null);
- },
-
- /**
- * Sets the value for a key
- * @param {String} name The key name
- * @param {Mixed} value The value to set
- */
- set : function(name, value){
- this.state[name] = value;
- this.fireEvent("statechange", this, name, value);
- },
-
- /**
- * Decodes a string previously encoded with {@link #encodeValue}.
- * @param {String} value The value to decode
- * @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];
- switch(type){
- case "n":
- return parseFloat(v);
- case "d":
- return new Date(Date.parse(v));
- case "b":
- return (v == "1");
- case "a":
- var all = [];
- if(v != ''){
- Ext.each(v.split('^'), function(val){
- all.push(this.decodeValue(val));
- }, this);
- }
- return all;
- case "o":
- var all = {};
- if(v != ''){
- Ext.each(v.split('^'), function(val){
- var kv = val.split('=');
- all[kv[0]] = this.decodeValue(kv[1]);
- }, this);
- }
- return all;
- default:
- return v;
- }
- },
-
- /**
- * Encodes a value including type information. Decode with {@link #decodeValue}.
- * @param {Mixed} value The value to encode
- * @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");
- }else if(Ext.isDate(v)){
- enc = "d:" + v.toGMTString();
- }else if(Ext.isArray(v)){
- var flat = "";
- for(var i = 0, len = v.length; i < len; i++){
- flat += this.encodeValue(v[i]);
- 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 = "o:" + flat.substring(0, flat.length-1);
- }else{
- enc = "s:" + v;
- }
- return escape(enc);
- }
-});
-