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); } } } } }
/** The only richer format supported is the file list flavor */ protected Object getRicherData(DataFlavor flavor) { if (DataFlavor.javaFileListFlavor.equals(flavor)) { ArrayList<Object> files = new ArrayList<Object>(); for (Object file : this.fileData) { files.add(file); } return files; } return null; }