Disabling and Enabling Up One level button and new folder button in JFileChooser on some condition

[Rishita Vishnu]

Hi All,

I have some problem regarding enabling and disabling icons in JFileChooser

Problem 1:

I have created a file chooser as follows
JFileChooser fileChooser = new JFileChooser( "Test" );

I need to disable up Folder Icon for this directory as it is the top directory.
But when i create a new folder in the directory and tries to save files to new folder , i want to enable up Folder button.
And also i need to disable the drop down box for Save In.

Problem 2:

I need to disable the new Folder button after i created 2 recursive folders in Test Directory.. say Test/ New Folder 1 / New Folder 2. After i add New Folder 2 inside New Folder 1 , i want to disable the new Folder button. How to identify whether i have clicked new Folder button recursively two times..
NB: I can have any number of folders in test directory. But each folder can have only one sub folder inside it.

Is there any easy way to implement this.

Thanks in Advance,
Rishita

[Rob Spoor]

Perhaps it is an easier idea to subclass FileSystemView and make it a wrapper around the default:

class ChrootFileSystemView extends FileSystemView
{
    private final FileSystemView view;
    private final File root;

    public ChrootFileSystemView(FileSystemView view, File root)
    {
        this.view = view;
        this.root = root;
    }

    public File[] getRoots()
    {
        return new File[] {root};
    }

    public File getHomeDirectory()
    {
        return root;
    }

    public File getDefaultDirectory()
    {
        return root;
    }

    public boolean isRoot(File file)
    {
        return root.equals(file);
    }

    // override all other methods to delegate to view, e.g.
    public File getChild(File parent, String fileName)
    {
        return view.getChild(parent, fileName);
    }
}

Perhaps you can override createNewFolder to restrict the sub folder levels as well; throw an IOException if it will be one level lower.

[Rishita Vishnu]

Sorry . this dint work for me.

My piece of code is like this

File confile = new File(filename);
JFileChooser fileChooser = new JFileChooser( "Test" );
fileChooser.setDialogTitle( "Save File" );
fileChooser.setSelectedFile(confile);
disableUpFolderButton(fileChooser);
int returnVal = fileChooser.showSaveDialog(null);
if (returnVal == JFileChooser.APPROVE_OPTION) 
	            // save the file
else
   //do something




 public static void disableUpFolderButton(Container c) {
        int len = c.getComponentCount();
        for (int i = 0; i < len; i++) {
          Component comp = c.getComponent(i);
          if (comp instanceof JButton) {
            JButton b = (JButton) comp;
            Icon icon = b.getIcon();           
            if (icon != null
                && icon == UIManager.getIcon("FileChooser.upFolderIcon") ){
              b.setEnabled(false);
             } 
          } else if (comp instanceof Container) {
        	  disableUpFolderButton((Container) comp);
          }
        }
      
       
    }

So for first time up level folder will be disabled. but if i add new folder in Test directory and opens that new folder to save file, i want up level folder to be enabled.