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<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>The source code</title>
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<pre class="prettyprint lang-js">/*!
* Ext JS Library 3.4.0
* Copyright(c) 2006-2011 Sencha Inc.
* licensing@sencha.com
* http://www.sencha.com/license
*/
<div id="cls-Ext.state.Provider"></div>/**
* @class Ext.state.Provider
* Abstract base class for state provider implementations. This class provides methods
* for encoding and decoding <b>typed</b> variables including dates and defines the
* Provider interface.
*/
Ext.state.Provider = Ext.extend(Ext.util.Observable, {
constructor : function(){
<div id="event-Ext.state.Provider-statechange"></div>/**
* @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);
},
<div id="method-Ext.state.Provider-get"></div>/**
* 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];
},
<div id="method-Ext.state.Provider-clear"></div>/**
* 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);
},
<div id="method-Ext.state.Provider-set"></div>/**
* 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);
},
<div id="method-Ext.state.Provider-decodeValue"></div>/**
* Decodes a string previously encoded with {@link #encodeValue}.
* @param {String} value The value to decode
* @return {Mixed} The decoded value
*/
decodeValue : function(cookie){
<div id="prop-Ext.state.Provider-var"></div>/**
* 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 'e':
return null;
case 'n':
return parseFloat(v);
case 'd':
return new Date(Date.parse(v));
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':
all = {};
if(v != ''){
Ext.each(v.split('^'), function(val){
kv = val.split('=');
all[kv[0]] = this.decodeValue(kv[1]);
}, this);
}
return all;
default:
return v;
}
},
<div id="method-Ext.state.Provider-encodeValue"></div>/**
* 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,
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();
}else if(Ext.isArray(v)){
for(len = v.length; i < len; i++){
flat += this.encodeValue(v[i]);
if(i != len - 1){
flat += '^';
}
}
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);
}else{
enc = 's:' + v;
}
return escape(enc);
}
});
</pre>
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