private void changeDirectory(File dir) {
JFileChooser fc = getFileChooser();
// Traverse shortcuts on Windows
if (dir != null && FilePane.usesShellFolder(fc)) {
try {
ShellFolder shellFolder = ShellFolder.getShellFolder(dir);
if (shellFolder.isLink()) {
File linkedTo = shellFolder.getLinkLocation();
// If linkedTo is null we try to use dir
if (linkedTo != null) {
if (fc.isTraversable(linkedTo)) {
dir = linkedTo;
} else {
return;
}
} else {
dir = shellFolder;
}
}
} catch (FileNotFoundException ex) {
return;
}
}
fc.setCurrentDirectory(dir);
if (fc.getFileSelectionMode() == JFileChooser.FILES_AND_DIRECTORIES
&& fc.getFileSystemView().isFileSystem(dir)) {
setFileName(dir.getAbsolutePath());
}
}
/**
* 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;
}
}