29 import java.security.AccessController; 30 import javax.swing.Icon; 31 import sun.security.action.GetPropertyAction; 32 33 /** 34 * @author Michael Martak 35 * @since 1.4 36 */ 37 @SuppressWarnings("serial") // JDK-implementation class 38 class DefaultShellFolder extends ShellFolder { 39 40 /** 41 * Create a file system shell folder from a file 42 */ 43 DefaultShellFolder(ShellFolder parent, File f) { 44 super(parent, f.getAbsolutePath()); 45 } 46 47 /** 48 * This method is implemented to make sure that no instances 49 * of <code>ShellFolder</code> are ever serialized. An instance of 50 * this default implementation can always be represented with a 51 * <code>java.io.File</code> object instead. 52 * 53 * @return a java.io.File replacement object. 54 */ 55 protected Object writeReplace() throws java.io.ObjectStreamException { 56 return new File(getPath()); 57 } 58 59 /** 60 * @return An array of shell folders that are children of this shell folder 61 * object, null if this shell folder is empty. 62 */ 63 public File[] listFiles() { 64 File[] files = super.listFiles(); 65 if (files != null) { 66 for (int i = 0; i < files.length; i++) { 67 files[i] = new DefaultShellFolder(this, files[i]); 68 } 69 } 70 return files; 71 } | 29 import java.security.AccessController; 30 import javax.swing.Icon; 31 import sun.security.action.GetPropertyAction; 32 33 /** 34 * @author Michael Martak 35 * @since 1.4 36 */ 37 @SuppressWarnings("serial") // JDK-implementation class 38 class DefaultShellFolder extends ShellFolder { 39 40 /** 41 * Create a file system shell folder from a file 42 */ 43 DefaultShellFolder(ShellFolder parent, File f) { 44 super(parent, f.getAbsolutePath()); 45 } 46 47 /** 48 * This method is implemented to make sure that no instances 49 * of {@code ShellFolder} are ever serialized. An instance of 50 * this default implementation can always be represented with a 51 * {@code java.io.File} object instead. 52 * 53 * @return a java.io.File replacement object. 54 */ 55 protected Object writeReplace() throws java.io.ObjectStreamException { 56 return new File(getPath()); 57 } 58 59 /** 60 * @return An array of shell folders that are children of this shell folder 61 * object, null if this shell folder is empty. 62 */ 63 public File[] listFiles() { 64 File[] files = super.listFiles(); 65 if (files != null) { 66 for (int i = 0; i < files.length; i++) { 67 files[i] = new DefaultShellFolder(this, files[i]); 68 } 69 } 70 return files; 71 } |