Change TargetDirectory

[Vitali]

If user choose non-empty TargetDirectory, how I can change this line via adding subfolder?

For example, user choose in TargetDirectoryPage

TargetDirectoryLine = 'c:\Some'

I want in this case make something like

TargetDirectoryLineEdit.setText(targetDirLine + "/" + "ProductName")

and follow to install app to this folder 'c:\Some\ProductName'.

But I do not know how catch - when I can change TargetDirectory.

IFW 3.2

[Vitali]

I did so:

Controller.prototype.ComponentSelectionPageCallback = function()
{
  var targetDir = gui.pageById(QInstaller.TargetDirectory).TargetDirectoryLineEdit.text;
  var files = QDesktopServices.findFiles(targetDir, "*.*");
  if (files.length!=0) {
    installer.setValue("TargetDir", targetDir + "\\" + installer.value("ProductName"));
  }
}