docs/source/FileProvider.html

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   2 <head>\r
   3   <title>The source code</title>\r
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   8     <pre class="prettyprint lang-js"><div id="cls-Ext.air.FileProvider"></div>/**\r
   9  * @class Ext.air.FileProvider\r
  10  * @extends Ext.state.Provider\r
  11  * \r
  12  * An Ext state provider implementation for Adobe AIR that stores state in the application \r
  13  * storage directory.\r
  14  * \r
  15  * @constructor\r
  16  * @param {Object} config\r
  17  */\r
  18 Ext.air.FileProvider = function(config){\r
  19     Ext.air.FileProvider.superclass.constructor.call(this);\r
  20         \r
  21         this.defaultState = {\r
  22                 mainWindow : {\r
  23                         width:780,\r
  24                         height:580,\r
  25                         x:10,\r
  26                         y:10\r
  27                 }\r
  28         };\r
  29         \r
  30     Ext.apply(this, config);\r
  31     this.state = this.readState();\r
  32         \r
  33         var provider = this;\r
  34         air.NativeApplication.nativeApplication.addEventListener('exiting', function(){\r
  35                 provider.saveState();\r
  36         });\r
  37 };\r
  38 \r
  39 Ext.extend(Ext.air.FileProvider, Ext.state.Provider, {\r
  40         <div id="cfg-Ext.air.FileProvider-file"></div>/**\r
  41          * @cfg {String} file\r
  42          * The file name to use for the state file in the application storage directory\r
  43          */\r
  44         file: 'extstate.data',\r
  45         \r
  46         <div id="cfg-Ext.air.FileProvider-defaultState"></div>/**\r
  47          * @cfg {Object} defaultState\r
  48          * The default state if no state file can be found\r
  49          */\r
  50         // private\r
  51     readState : function(){\r
  52                 var stateFile = air.File.applicationStorageDirectory.resolvePath(this.file);\r
  53                 if(!stateFile.exists){\r
  54                         return this.defaultState || {};\r
  55                 }\r
  56                 \r
  57                 var stream = new air.FileStream();\r
  58                 stream.open(stateFile, air.FileMode.READ);\r
  59                 \r
  60                 var stateData = stream.readObject();\r
  61                 stream.close();\r
  62                 \r
  63                 return stateData || this.defaultState || {};\r
  64     },\r
  65 \r
  66     // private\r
  67     saveState : function(name, value){\r
  68         var stateFile = air.File.applicationStorageDirectory.resolvePath(this.file);\r
  69                 var stream = new air.FileStream();\r
  70                 stream.open(stateFile, air.FileMode.WRITE);\r
  71                 stream.writeObject(this.state);\r
  72                 stream.close();\r
  73     }\r
  74 });</pre>    \r
  75 </body>\r
  76 </html>