FileSystemView.java 文件源码

public FileSystemView() {
    final WeakReference<FileSystemView> weakReference = new WeakReference<FileSystemView>(this);

    UIManager.addPropertyChangeListener(new PropertyChangeListener() {
        public void propertyChange(PropertyChangeEvent evt) {
            FileSystemView fileSystemView = weakReference.get();

            if (fileSystemView == null) {
                // FileSystemView was destroyed
                UIManager.removePropertyChangeListener(this);
            } else {
                if (evt.getPropertyName().equals("lookAndFeel")) {
                    fileSystemView.useSystemExtensionHiding =
                            UIManager.getDefaults().getBoolean("FileChooser.useSystemExtensionHiding");
                }
            }
        }
    });
}