private void actionOpenFile () {
		int res = fileChooser.showOpenDialog( this );
		if ( res == JFileChooser.APPROVE_OPTION ) {
			File file = fileChooser.getSelectedFile();
			try ( BencodeInputStream bin = new BencodeInputStream( file ) ) {
				Value<?> val = bin.readValue();
				tree.setModel( new BencodeTreeModel( val ) );
				
			} catch ( IOException exc ) {
				// TODO Auto-generated catch block
				exc.printStackTrace();
			}
			
		}
	}