air/src/FileTreeLoader.js

   1 /*\r
   2  * Ext JS Library 0.30\r
   3  * Copyright(c) 2006-2009, Ext JS, LLC.\r
   4  * licensing@extjs.com\r
   5  * \r
   6  * http://extjs.com/license\r
   7  */\r
   8 \r
   9 Ext.tree.LocalTreeLoader = Ext.extend(Ext.tree.TreeLoader, {
  10     requestData : function(node, callback){
  11         if(this.fireEvent("beforeload", this, node, callback) !== false){
  12             var p = Ext.urlDecode(this.getParams(node));
  13             var response = this.dataFn(node);
  14             this.processResponse(response, node, callback);
  15             this.fireEvent("load", this, node, response);
  16         }else{
  17             // if the load is cancelled, make sure we notify
  18             // the node that we are done
  19             if(typeof callback == "function"){
  20                 callback();
  21             }
  22         }
  23     },
  24     processResponse : function(o, node, callback){
  25         try {
  26             node.beginUpdate();
  27             for(var i = 0, len = o.length; i < len; i++){
  28                 var n = this.createNode(o[i]);
  29                 if(n){
  30                     node.appendChild(n);
  31                 }
  32             }
  33             node.endUpdate();
  34             if(typeof callback == "function"){
  35                 callback(this, node);
  36             }
  37         }catch(e){
  38             this.handleFailure(response);
  39         }
  40     },
  41     load : function(node, callback){
  42         if(this.clearOnLoad){
  43             while(node.firstChild){
  44                 node.removeChild(node.firstChild);
  45             }
  46         }
  47         if(this.doPreload(node)){ // preloaded json children
  48             if(typeof callback == "function"){
  49                 callback();
  50             }
  51         }else if(this.dataFn||this.fn){
  52             this.requestData(node, callback);
  53         }
  54     }
  55 });
  56
  57 /**
  58  * @cfg {air.File} directory
  59  * Initial directory to load the FileTree from
  60  */
  61 Ext.air.FileTreeLoader = Ext.extend(Ext.tree.LocalTreeLoader, {
  62     extensionFilter: false,
  63     dataFn: function(currNode) {
  64         var currDir;
  65         if (currNode.attributes.url) {
  66                 currDir = this.directory.resolvePath(currNode.attributes.url);
  67         } else {
  68                 currDir = this.directory;
  69         }
  70         var files = [];
  71         var c = currDir.getDirectoryListing();
  72         for (i = 0; i < c.length; i++) {
  73             if (c[i].isDirectory || this.extensionFilter === false || this.extensionFilter === c[i].extension)
  74             files.push({
  75                 text: c[i].name,
  76                 url: c[i].url,
  77                 extension: c[i].extension,
  78                 leaf: !c[i].isDirectory
  79             });
  80         }
  81         return files;
  82     }
  83 });