/**
+ * @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>
+ * This class passes on calls from components to the underlying {@link Ext.state.Provider} so that
+ * there is a common interface that can be used without needing to refer to a specific provider instance
+ * in every component.
+ * @singleton
+ * @docauthor Evan Trimboli <evan@sencha.com>
+ */
+Ext.define('Ext.state.Manager', {
+ singleton: true,
+ requires: ['Ext.state.Provider'],
+ constructor: function() {
+ this.provider = Ext.create('Ext.state.Provider');
+ },
+
+
+ /**
+ * Configures the default state provider for your application
+ * @param {Provider} stateProvider The state provider to set
+ */
+ setProvider : function(stateProvider){
+ this.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 this.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){
+ this.provider.set(key, value);
+ },
+
+ /**
+ * Clears a value from the state
+ * @param {String} name The key name
+ */
+ clear : function(key){
+ this.provider.clear(key);
+ },
+
+ /**
+ * Gets the currently configured state provider
+ * @return {Provider} The state provider
+ */
+ getProvider : function(){
+ return this.provider;
+ }
+});