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+
+
+ The source code
+
+
+
+
+ /**
+ * @class Ext.air.FileProvider
+ * @extends Ext.state.Provider
+ *
+ * An Ext state provider implementation for Adobe AIR that stores state in the application
+ * storage directory.
+ *
+ * @constructor
+ * @param {Object} config
+ */
+Ext.air.FileProvider = function(config){
+ Ext.air.FileProvider.superclass.constructor.call(this);
+
+ this.defaultState = {
+ mainWindow : {
+ width:780,
+ height:580,
+ x:10,
+ y:10
+ }
+ };
+
+ Ext.apply(this, config);
+ this.state = this.readState();
+
+ var provider = this;
+ air.NativeApplication.nativeApplication.addEventListener('exiting', function(){
+ provider.saveState();
+ });
+};
+
+Ext.extend(Ext.air.FileProvider, Ext.state.Provider, {
+ /**
+ * @cfg {String} file
+ * The file name to use for the state file in the application storage directory
+ */
+ file: 'extstate.data',
+
+ /**
+ * @cfg {Object} defaultState
+ * The default state if no state file can be found
+ */
+ // private
+ readState : function(){
+ var stateFile = air.File.applicationStorageDirectory.resolvePath(this.file);
+ if(!stateFile.exists){
+ return this.defaultState || {};
+ }
+
+ var stream = new air.FileStream();
+ stream.open(stateFile, air.FileMode.READ);
+
+ var stateData = stream.readObject();
+ stream.close();
+
+ return stateData || this.defaultState || {};
+ },
+
+ // private
+ saveState : function(name, value){
+ var stateFile = air.File.applicationStorageDirectory.resolvePath(this.file);
+ var stream = new air.FileStream();
+ stream.open(stateFile, air.FileMode.WRITE);
+ stream.writeObject(this.state);
+ stream.close();
+ }
+});
+
+
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