/**
* Checks if <code>f</code> represents a real directory or file as opposed to a special folder
* such as <code>"Desktop"</code>. Used by UI classes to decide if a folder is selectable when
* doing directory choosing.
*
* @param f a <code>File</code> object
* @return <code>true</code> if <code>f</code> is a real file or directory.
* @since 1.4
*/
public boolean isFileSystem(File f) {
if (f instanceof ShellFolder) {
ShellFolder sf = (ShellFolder) f;
// Shortcuts to directories are treated as not being file system objects,
// so that they are never returned by JFileChooser.
return sf.isFileSystem() && !(sf.isLink() && sf.isDirectory());
} else {
return true;
}
}
