3 * Copyright(c) 2006-2010 Ext JS, LLC
5 * http://www.extjs.com/license
8 * @class Ext.state.Provider
9 * Abstract base class for state provider implementations. This class provides methods
10 * for encoding and decoding <b>typed</b> variables including dates and defines the
13 Ext.state.Provider = function(){
16 * Fires when a state change occurs.
17 * @param {Provider} this This state provider
18 * @param {String} key The state key which was changed
19 * @param {String} value The encoded value for the state
21 this.addEvents("statechange");
23 Ext.state.Provider.superclass.constructor.call(this);
25 Ext.extend(Ext.state.Provider, Ext.util.Observable, {
27 * Returns the current value for a key
28 * @param {String} name The key name
29 * @param {Mixed} defaultValue A default value to return if the key's value is not found
30 * @return {Mixed} The state data
32 get : function(name, defaultValue){
33 return typeof this.state[name] == "undefined" ?
34 defaultValue : this.state[name];
38 * Clears a value from the state
39 * @param {String} name The key name
41 clear : function(name){
42 delete this.state[name];
43 this.fireEvent("statechange", this, name, null);
47 * Sets the value for a key
48 * @param {String} name The key name
49 * @param {Mixed} value The value to set
51 set : function(name, value){
52 this.state[name] = value;
53 this.fireEvent("statechange", this, name, value);
57 * Decodes a string previously encoded with {@link #encodeValue}.
58 * @param {String} value The value to decode
59 * @return {Mixed} The decoded value
61 decodeValue : function(cookie){
62 var re = /^(a|n|d|b|s|o)\:(.*)$/;
63 var matches = re.exec(unescape(cookie));
64 if(!matches || !matches[1]) return; // non state cookie
65 var type = matches[1];
71 return new Date(Date.parse(v));
77 Ext.each(v.split('^'), function(val){
78 all.push(this.decodeValue(val));
85 Ext.each(v.split('^'), function(val){
86 var kv = val.split('=');
87 all[kv[0]] = this.decodeValue(kv[1]);
97 * Encodes a value including type information. Decode with {@link #decodeValue}.
98 * @param {Mixed} value The value to encode
99 * @return {String} The encoded value
101 encodeValue : function(v){
103 if(typeof v == "number"){
105 }else if(typeof v == "boolean"){
106 enc = "b:" + (v ? "1" : "0");
107 }else if(Ext.isDate(v)){
108 enc = "d:" + v.toGMTString();
109 }else if(Ext.isArray(v)){
111 for(var i = 0, len = v.length; i < len; i++){
112 flat += this.encodeValue(v[i]);
113 if(i != len-1) flat += "^";
116 }else if(typeof v == "object"){
119 if(typeof v[key] != "function" && v[key] !== undefined){
120 flat += key + "=" + this.encodeValue(v[key]) + "^";
123 enc = "o:" + flat.substring(0, flat.length-1);
131 * @class Ext.state.Manager
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132 * This is the global state manager. By default all components that are "state aware" check this class
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133 * for state information if you don't pass them a custom state provider. In order for this class
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134 * to be useful, it must be initialized with a provider when your application initializes. Example usage:
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136 // in your initialization function
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138 Ext.state.Manager.setProvider(new Ext.state.CookieProvider());
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139 var win = new Window(...);
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140 win.restoreState();
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145 Ext.state.Manager = function(){
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146 var provider = new Ext.state.Provider();
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150 * Configures the default state provider for your application
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151 * @param {Provider} stateProvider The state provider to set
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153 setProvider : function(stateProvider){
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154 provider = stateProvider;
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158 * Returns the current value for a key
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159 * @param {String} name The key name
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160 * @param {Mixed} defaultValue The default value to return if the key lookup does not match
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161 * @return {Mixed} The state data
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163 get : function(key, defaultValue){
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164 return provider.get(key, defaultValue);
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168 * Sets the value for a key
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169 * @param {String} name The key name
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170 * @param {Mixed} value The state data
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172 set : function(key, value){
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173 provider.set(key, value);
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177 * Clears a value from the state
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178 * @param {String} name The key name
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180 clear : function(key){
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181 provider.clear(key);
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185 * Gets the currently configured state provider
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186 * @return {Provider} The state provider
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188 getProvider : function(){
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194 * @class Ext.state.CookieProvider
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195 * @extends Ext.state.Provider
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196 * The default Provider implementation which saves state via cookies.
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199 var cp = new Ext.state.CookieProvider({
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201 expires: new Date(new Date().getTime()+(1000*60*60*24*30)), //30 days
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202 domain: "extjs.com"
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204 Ext.state.Manager.setProvider(cp);
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206 * @cfg {String} path The path for which the cookie is active (defaults to root '/' which makes it active for all pages in the site)
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207 * @cfg {Date} expires The cookie expiration date (defaults to 7 days from now)
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208 * @cfg {String} domain The domain to save the cookie for. Note that you cannot specify a different domain than
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209 * your page is on, but you can specify a sub-domain, or simply the domain itself like 'extjs.com' to include
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210 * all sub-domains if you need to access cookies across different sub-domains (defaults to null which uses the same
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211 * domain the page is running on including the 'www' like 'www.extjs.com')
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212 * @cfg {Boolean} secure True if the site is using SSL (defaults to false)
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214 * Create a new CookieProvider
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215 * @param {Object} config The configuration object
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217 Ext.state.CookieProvider = function(config){
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218 Ext.state.CookieProvider.superclass.constructor.call(this);
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220 this.expires = new Date(new Date().getTime()+(1000*60*60*24*7)); //7 days
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221 this.domain = null;
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222 this.secure = false;
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223 Ext.apply(this, config);
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224 this.state = this.readCookies();
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227 Ext.extend(Ext.state.CookieProvider, Ext.state.Provider, {
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229 set : function(name, value){
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230 if(typeof value == "undefined" || value === null){
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234 this.setCookie(name, value);
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235 Ext.state.CookieProvider.superclass.set.call(this, name, value);
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239 clear : function(name){
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240 this.clearCookie(name);
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241 Ext.state.CookieProvider.superclass.clear.call(this, name);
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245 readCookies : function(){
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247 var c = document.cookie + ";";
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248 var re = /\s?(.*?)=(.*?);/g;
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250 while((matches = re.exec(c)) != null){
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251 var name = matches[1];
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252 var value = matches[2];
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253 if(name && name.substring(0,3) == "ys-"){
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254 cookies[name.substr(3)] = this.decodeValue(value);
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261 setCookie : function(name, value){
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262 document.cookie = "ys-"+ name + "=" + this.encodeValue(value) +
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263 ((this.expires == null) ? "" : ("; expires=" + this.expires.toGMTString())) +
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264 ((this.path == null) ? "" : ("; path=" + this.path)) +
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265 ((this.domain == null) ? "" : ("; domain=" + this.domain)) +
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266 ((this.secure == true) ? "; secure" : "");
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270 clearCookie : function(name){
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271 document.cookie = "ys-" + name + "=null; expires=Thu, 01-Jan-70 00:00:01 GMT" +
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272 ((this.path == null) ? "" : ("; path=" + this.path)) +
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273 ((this.domain == null) ? "" : ("; domain=" + this.domain)) +
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274 ((this.secure == true) ? "; secure" : "");
\r