3 * Copyright(c) 2006-2009 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));
76 var values = v.split("^");
77 for(var i = 0, len = values.length; i < len; i++){
78 all.push(this.decodeValue(values[i]));
83 var values = v.split("^");
84 for(var i = 0, len = values.length; i < len; i++){
85 var kv = values[i].split("=");
86 all[kv[0]] = this.decodeValue(kv[1]);
95 * Encodes a value including type information. Decode with {@link #decodeValue}.
96 * @param {Mixed} value The value to encode
97 * @return {String} The encoded value
99 encodeValue : function(v){
101 if(typeof v == "number"){
103 }else if(typeof v == "boolean"){
104 enc = "b:" + (v ? "1" : "0");
105 }else if(Ext.isDate(v)){
106 enc = "d:" + v.toGMTString();
107 }else if(Ext.isArray(v)){
109 for(var i = 0, len = v.length; i < len; i++){
110 flat += this.encodeValue(v[i]);
111 if(i != len-1) flat += "^";
114 }else if(typeof v == "object"){
117 if(typeof v[key] != "function" && v[key] !== undefined){
118 flat += key + "=" + this.encodeValue(v[key]) + "^";
121 enc = "o:" + flat.substring(0, flat.length-1);
129 * @class Ext.state.Manager
\r
130 * This is the global state manager. By default all components that are "state aware" check this class
\r
131 * for state information if you don't pass them a custom state provider. In order for this class
\r
132 * to be useful, it must be initialized with a provider when your application initializes. Example usage:
\r
134 // in your initialization function
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136 Ext.state.Manager.setProvider(new Ext.state.CookieProvider());
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137 var win = new Window(...);
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138 win.restoreState();
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143 Ext.state.Manager = function(){
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144 var provider = new Ext.state.Provider();
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148 * Configures the default state provider for your application
\r
149 * @param {Provider} stateProvider The state provider to set
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151 setProvider : function(stateProvider){
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152 provider = stateProvider;
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156 * Returns the current value for a key
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157 * @param {String} name The key name
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158 * @param {Mixed} defaultValue The default value to return if the key lookup does not match
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159 * @return {Mixed} The state data
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161 get : function(key, defaultValue){
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162 return provider.get(key, defaultValue);
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166 * Sets the value for a key
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167 * @param {String} name The key name
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168 * @param {Mixed} value The state data
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170 set : function(key, value){
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171 provider.set(key, value);
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175 * Clears a value from the state
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176 * @param {String} name The key name
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178 clear : function(key){
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179 provider.clear(key);
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183 * Gets the currently configured state provider
\r
184 * @return {Provider} The state provider
\r
186 getProvider : function(){
\r
192 * @class Ext.state.CookieProvider
\r
193 * @extends Ext.state.Provider
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194 * The default Provider implementation which saves state via cookies.
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197 var cp = new Ext.state.CookieProvider({
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199 expires: new Date(new Date().getTime()+(1000*60*60*24*30)), //30 days
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200 domain: "extjs.com"
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202 Ext.state.Manager.setProvider(cp);
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204 * @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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205 * @cfg {Date} expires The cookie expiration date (defaults to 7 days from now)
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206 * @cfg {String} domain The domain to save the cookie for. Note that you cannot specify a different domain than
\r
207 * 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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208 * all sub-domains if you need to access cookies across different sub-domains (defaults to null which uses the same
\r
209 * domain the page is running on including the 'www' like 'www.extjs.com')
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210 * @cfg {Boolean} secure True if the site is using SSL (defaults to false)
\r
212 * Create a new CookieProvider
\r
213 * @param {Object} config The configuration object
\r
215 Ext.state.CookieProvider = function(config){
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216 Ext.state.CookieProvider.superclass.constructor.call(this);
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218 this.expires = new Date(new Date().getTime()+(1000*60*60*24*7)); //7 days
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219 this.domain = null;
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220 this.secure = false;
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221 Ext.apply(this, config);
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222 this.state = this.readCookies();
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225 Ext.extend(Ext.state.CookieProvider, Ext.state.Provider, {
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227 set : function(name, value){
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228 if(typeof value == "undefined" || value === null){
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232 this.setCookie(name, value);
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233 Ext.state.CookieProvider.superclass.set.call(this, name, value);
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237 clear : function(name){
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238 this.clearCookie(name);
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239 Ext.state.CookieProvider.superclass.clear.call(this, name);
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243 readCookies : function(){
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245 var c = document.cookie + ";";
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246 var re = /\s?(.*?)=(.*?);/g;
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248 while((matches = re.exec(c)) != null){
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249 var name = matches[1];
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250 var value = matches[2];
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251 if(name && name.substring(0,3) == "ys-"){
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252 cookies[name.substr(3)] = this.decodeValue(value);
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259 setCookie : function(name, value){
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260 document.cookie = "ys-"+ name + "=" + this.encodeValue(value) +
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261 ((this.expires == null) ? "" : ("; expires=" + this.expires.toGMTString())) +
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262 ((this.path == null) ? "" : ("; path=" + this.path)) +
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263 ((this.domain == null) ? "" : ("; domain=" + this.domain)) +
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264 ((this.secure == true) ? "; secure" : "");
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268 clearCookie : function(name){
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269 document.cookie = "ys-" + name + "=null; expires=Thu, 01-Jan-70 00:00:01 GMT" +
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270 ((this.path == null) ? "" : ("; path=" + this.path)) +
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271 ((this.domain == null) ? "" : ("; domain=" + this.domain)) +
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272 ((this.secure == true) ? "; secure" : "");
\r