Determining existence of folder on client's machine in GWT

Question

Is there any way I can check the existence of a folder on the client's root on the C drive (assuming the client is using Windows XP) in GWT? In a way that works both in Firefox and IE at least?

I know that there is a JavaScript way to do it, but as far as I know it only works in IE6. If this is my only real option, I'll use JSNI to access the following JavaScript:

try {
 var fso  = new ActiveXObject("Scripting.FileSystemObject");
 try {
  fso.GetFolder("C:\\Folder");
  return true;
 } catch (f) {
  return false;
 }
} catch (e) {
 return false;
}

Answer 1

No, GWT does not have that.

Since GWT is built on 'plain' JavaScript, it can't offer you more. You're stuck to using ActiveX/Flash/Java applets for this.