state-debug.js
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上传日期:2022-08-06
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文件大小:9k
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JavaScript
开发平台:
JavaScript
- /*! * Ext JS Library 3.1.0 * 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 <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, { /** * 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); } }); /**
- * @class Ext.state.Manager
- * This is the global state manager. By default all components that are "state aware" check this class
- * for state information if you don't pass them a custom state provider. In order for this class
- * to be useful, it must be initialized with a provider when your application initializes. Example usage:
- <pre><code>
- // in your initialization function
- init : function(){
- Ext.state.Manager.setProvider(new Ext.state.CookieProvider());
- var win = new Window(...);
- win.restoreState();
- }
- </code></pre>
- * @singleton
- */
- Ext.state.Manager = function(){
- var provider = new Ext.state.Provider();
- return {
- /**
- * Configures the default state provider for your application
- * @param {Provider} stateProvider The state provider to set
- */
- setProvider : function(stateProvider){
- provider = stateProvider;
- },
- /**
- * Returns the current value for a key
- * @param {String} name The key name
- * @param {Mixed} defaultValue The default value to return if the key lookup does not match
- * @return {Mixed} The state data
- */
- get : function(key, defaultValue){
- return provider.get(key, defaultValue);
- },
- /**
- * Sets the value for a key
- * @param {String} name The key name
- * @param {Mixed} value The state data
- */
- set : function(key, value){
- provider.set(key, value);
- },
- /**
- * Clears a value from the state
- * @param {String} name The key name
- */
- clear : function(key){
- provider.clear(key);
- },
- /**
- * Gets the currently configured state provider
- * @return {Provider} The state provider
- */
- getProvider : function(){
- return provider;
- }
- };
- }();
- /**
- * @class Ext.state.CookieProvider
- * @extends Ext.state.Provider
- * The default Provider implementation which saves state via cookies.
- * <br />Usage:
- <pre><code>
- var cp = new Ext.state.CookieProvider({
- path: "/cgi-bin/",
- expires: new Date(new Date().getTime()+(1000*60*60*24*30)), //30 days
- domain: "extjs.com"
- });
- Ext.state.Manager.setProvider(cp);
- </code></pre>
- * @cfg {String} path The path for which the cookie is active (defaults to root '/' which makes it active for all pages in the site)
- * @cfg {Date} expires The cookie expiration date (defaults to 7 days from now)
- * @cfg {String} domain The domain to save the cookie for. Note that you cannot specify a different domain than
- * your page is on, but you can specify a sub-domain, or simply the domain itself like 'extjs.com' to include
- * all sub-domains if you need to access cookies across different sub-domains (defaults to null which uses the same
- * domain the page is running on including the 'www' like 'www.extjs.com')
- * @cfg {Boolean} secure True if the site is using SSL (defaults to false)
- * @constructor
- * Create a new CookieProvider
- * @param {Object} config The configuration object
- */
- Ext.state.CookieProvider = function(config){
- Ext.state.CookieProvider.superclass.constructor.call(this);
- this.path = "/";
- this.expires = new Date(new Date().getTime()+(1000*60*60*24*7)); //7 days
- this.domain = null;
- this.secure = false;
- Ext.apply(this, config);
- this.state = this.readCookies();
- };
- Ext.extend(Ext.state.CookieProvider, Ext.state.Provider, {
- // private
- set : function(name, value){
- if(typeof value == "undefined" || value === null){
- this.clear(name);
- return;
- }
- this.setCookie(name, value);
- Ext.state.CookieProvider.superclass.set.call(this, name, value);
- },
- // private
- clear : function(name){
- this.clearCookie(name);
- Ext.state.CookieProvider.superclass.clear.call(this, name);
- },
- // private
- readCookies : function(){
- var cookies = {};
- var c = document.cookie + ";";
- var re = /s?(.*?)=(.*?);/g;
- var matches;
- while((matches = re.exec(c)) != null){
- var name = matches[1];
- var value = matches[2];
- if(name && name.substring(0,3) == "ys-"){
- cookies[name.substr(3)] = this.decodeValue(value);
- }
- }
- return cookies;
- },
- // private
- setCookie : function(name, value){
- document.cookie = "ys-"+ name + "=" + this.encodeValue(value) +
- ((this.expires == null) ? "" : ("; expires=" + this.expires.toGMTString())) +
- ((this.path == null) ? "" : ("; path=" + this.path)) +
- ((this.domain == null) ? "" : ("; domain=" + this.domain)) +
- ((this.secure == true) ? "; secure" : "");
- },
- // private
- clearCookie : function(name){
- document.cookie = "ys-" + name + "=null; expires=Thu, 01-Jan-70 00:00:01 GMT" +
- ((this.path == null) ? "" : ("; path=" + this.path)) +
- ((this.domain == null) ? "" : ("; domain=" + this.domain)) +
- ((this.secure == true) ? "; secure" : "");
- }
- });