public void valueChanged(ListSelectionEvent evt) {
if (!evt.getValueIsAdjusting()) {
JFileChooser chooser = getFileChooser();
FileSystemView fsv = chooser.getFileSystemView();
JList list = (JList) evt.getSource();
int fsm = chooser.getFileSelectionMode();
boolean useSetDirectory = usesSingleFilePane && (fsm == JFileChooser.FILES_ONLY);
if (chooser.isMultiSelectionEnabled()) {
File[] files = null;
Object[] objects = list.getSelectedValues();
if (objects != null) {
if (objects.length == 1
&& ((File) objects[0]).isDirectory()
&& chooser.isTraversable(((File) objects[0]))
&& (useSetDirectory || !fsv.isFileSystem(((File) objects[0])))) {
setDirectorySelected(true);
setDirectory(((File) objects[0]));
} else {
ArrayList<File> fList = new ArrayList<File>(objects.length);
for (Object object : objects) {
File f = (File) object;
boolean isDir = f.isDirectory();
if ((chooser.isFileSelectionEnabled() && !isDir)
|| (chooser.isDirectorySelectionEnabled() && fsv.isFileSystem(f) && isDir)) {
fList.add(f);
}
}
if (fList.size() > 0) {
files = fList.toArray(new File[fList.size()]);
}
setDirectorySelected(false);
}
}
chooser.setSelectedFiles(files);
} else {
File file = (File) list.getSelectedValue();
if (file != null
&& file.isDirectory()
&& chooser.isTraversable(file)
&& (useSetDirectory || !fsv.isFileSystem(file))) {
setDirectorySelected(true);
setDirectory(file);
if (usesSingleFilePane) {
chooser.setSelectedFile(null);
}
} else {
setDirectorySelected(false);
if (file != null) {
chooser.setSelectedFile(file);
}
}
}
}
}
public void mouseEntered(MouseEvent evt) {
if (list != null) {
TransferHandler th1 = getFileChooser().getTransferHandler();
TransferHandler th2 = list.getTransferHandler();
if (th1 != th2) {
list.setTransferHandler(th1);
}
if (getFileChooser().getDragEnabled() != list.getDragEnabled()) {
list.setDragEnabled(getFileChooser().getDragEnabled());
}
}
}
public void mouseClicked(MouseEvent evt) {
// Note: we can't depend on evt.getSource() because of backward
// compatability
if (list != null && SwingUtilities.isLeftMouseButton(evt) && (evt.getClickCount() % 2 == 0)) {
int index = SwingUtilities2.loc2IndexFileList(list, evt.getPoint());
if (index >= 0) {
File f = (File) list.getModel().getElementAt(index);
try {
// Strip trailing ".."
f = ShellFolder.getNormalizedFile(f);
} catch (IOException ex) {
// That's ok, we'll use f as is
}
if (getFileChooser().isTraversable(f)) {
list.clearSelection();
changeDirectory(f);
} else {
getFileChooser().approveSelection();
}
}
}
}