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--- sample_code:folder_picker [2014/11/26 12:25]
stevegarman created
+++ sample_code:folder_picker [2015/02/19 23:17]
@@ Line 1: / Line 1: @@
-====== Sample folder picker ======
-This is a simple dialog to allow a user to choose a file folder.
-See also [[sample_code:file_picker|Sample File Picker]]
-===== The code =====
-<code javascript folderpicker.js>
-//Called when application is started
-function OnStart(){
-    //Create a layout with objects vertically centered.
-    lay = app.CreateLayout( "linear", "Vertical,FillXY" );
-    //Create a text label and add it to layout.
-    btn = app.CreateButton( "FolderPicker demo" );
-    lay.AddChild( btn );
-    btn.SetOnTouch(btn_OnTouch);
-    //Add layout to app.
-    app.AddLayout( lay );
-}//function Onstart()
-function btn_OnTouch(){
-    pick = new FolderPicker(mycallback);
-    pick.SetFolder("/sdcard");
-    pick.Show();
-}//function btn_OnTouch()
-function mycallback(fullpath){
-  app.Alert("user chose " + fullpath)
-}//function mycallback()
-function FolderPicker(Callback,basePath){
-  var self = this;
-  this.basePath = basePath || "/sdcard";
-  this.callback = Callback || function(){};
-  this.FolderPath = this.basePath;
-  this.dlg = app.CreateDialog(this.basePath);
-  this.lay = app.CreateLayout( "linear", "horizontal,fillxy" );
-  this.lstFolds = app.CreateList("blank" , 0.7, 0.7 );
-  this.lstFolds.parent = self;
-  this.lstFolds.SetOnTouch(FolderPicker_NewFolder);
-  this.lay.AddChild(this.lstFolds);
-  var vlay = app.CreateLayout( "linear", "vertical,fillxy" );
-  this.okBtn = app.CreateButton("Ok");
-  this.okBtn.parent = self;
-  this.okBtn.SetOnTouch(FolderPicker_Select);
-  vlay.AddChild(this.okBtn);
-  this.cancelBtn = app.CreateButton("Cancel");
-  this.cancelBtn.parent = self;
-  this.cancelBtn.SetOnTouch(FolderPicker_Select);
-  vlay.AddChild(this.cancelBtn);
-  this.lay.AddChild(vlay)
-  this.dlg.AddLayout(this.lay);
-  this.Show = function(){
-    self.dlg.Show();
-  }
-  this.Hide = function(){
-    self.dlg.Hide();
-  }
-  this.GetFolder = function(){
-    return self.FolderPath;
-  }
-  this.SetFolder = function(folderPath){
-    self.FolderPath = folderPath;
-    self.dlg.SetTitle(folderPath);
-    app.ShowProgress( "Loading..." );
-    var lst = app.ListFolder(folderPath);
-    lst.sort(function(x,y){return (x.toLowerCase() > y.toLowerCase())?1:-1});
-    var dirlist=[];
-    if( self.FolderPath != self.basePath ) dirlist = [".."];
-    var ths = lst.shift();
-    while (undefined != ths) {
-      var pth = folderPath + "/" + ths;
-      if (app.IsFolder(pth))dirlist.push(ths);
-      ths = lst.shift();
-    }
-    self.lstFolds.SetList(dirlist.join(","));
-    app.HideProgress();
-  }
-}//function FolderPicker()
-function FolderPicker_NewFolder(fil){
-  var par = this.parent;
-  var pth = par.GetFolder();
-  if (fil != "..") {
-      pth += "/" + fil
-  }
-  else{
-     if( pth == par.basePath || pth == "/" ){
-       par.Hide()
-       return;
-     }
-     var tst = pth.split("/");
-     tmp = tst.pop();
-     pth = (tst.join("/"));
-  }
-  par.SetFolder(pth);
-}//function FolderPicker_NewFolder()
-function FolderPicker_Select(fil){
-  var par = this.parent;
-  var pth = par.GetFolder();
-  par.Hide();
-  if(this.GetText() == "Ok") par.callback(pth );
-}//function FolderPicker_Select()
-</code>

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