56 * Java Licensees may want to provide a different implementation of
57 * FileSystemView to better handle a given operating system.
58 *
59 * @author Jeff Dinkins
60 */
61
62 // PENDING(jeff) - need to provide a specification for
63 // how Mac/OS2/BeOS/etc file systems can modify FileSystemView
64 // to handle their particular type of file system.
65
66 public abstract class FileSystemView {
67
68 static FileSystemView windowsFileSystemView = null;
69 static FileSystemView unixFileSystemView = null;
70 //static FileSystemView macFileSystemView = null;
71 static FileSystemView genericFileSystemView = null;
72
73 private boolean useSystemExtensionHiding =
74 UIManager.getDefaults().getBoolean("FileChooser.useSystemExtensionHiding");
75
76 public static FileSystemView getFileSystemView() {
77 if(File.separatorChar == '\\') {
78 if(windowsFileSystemView == null) {
79 windowsFileSystemView = new WindowsFileSystemView();
80 }
81 return windowsFileSystemView;
82 }
83
84 if(File.separatorChar == '/') {
85 if(unixFileSystemView == null) {
86 unixFileSystemView = new UnixFileSystemView();
87 }
88 return unixFileSystemView;
89 }
90
91 // if(File.separatorChar == ':') {
92 // if(macFileSystemView == null) {
93 // macFileSystemView = new MacFileSystemView();
94 // }
95 // return macFileSystemView;
96 //}
97
98 if(genericFileSystemView == null) {
99 genericFileSystemView = new GenericFileSystemView();
100 }
101 return genericFileSystemView;
102 }
103
104 public FileSystemView() {
105 final WeakReference<FileSystemView> weakReference = new WeakReference<FileSystemView>(this);
106
107 UIManager.addPropertyChangeListener(new PropertyChangeListener() {
108 public void propertyChange(PropertyChangeEvent evt) {
109 FileSystemView fileSystemView = weakReference.get();
110
111 if (fileSystemView == null) {
112 // FileSystemView was destroyed
113 UIManager.removePropertyChangeListener(this);
114 } else {
115 if (evt.getPropertyName().equals("lookAndFeel")) {
116 fileSystemView.useSystemExtensionHiding =
117 UIManager.getDefaults().getBoolean("FileChooser.useSystemExtensionHiding");
118 }
119 }
120 }
121 });
122 }
123
407 * on this system
408 */
409 public File[] getRoots() {
410 // Don't cache this array, because filesystem might change
411 File[] roots = (File[])ShellFolder.get("roots");
412
413 for (int i = 0; i < roots.length; i++) {
414 if (isFileSystemRoot(roots[i])) {
415 roots[i] = createFileSystemRoot(roots[i]);
416 }
417 }
418 return roots;
419 }
420
421
422 // Providing default implementations for the remaining methods
423 // because most OS file systems will likely be able to use this
424 // code. If a given OS can't, override these methods in its
425 // implementation.
426
427 public File getHomeDirectory() {
428 return createFileObject(System.getProperty("user.home"));
429 }
430
431 /**
432 * Return the user's default starting directory for the file chooser.
433 *
434 * @return a <code>File</code> object representing the default
435 * starting folder
436 * @since 1.4
437 */
438 public File getDefaultDirectory() {
439 File f = (File)ShellFolder.get("fileChooserDefaultFolder");
440 if (isFileSystemRoot(f)) {
441 f = createFileSystemRoot(f);
442 }
443 return f;
444 }
445
446 /**
|
56 * Java Licensees may want to provide a different implementation of
57 * FileSystemView to better handle a given operating system.
58 *
59 * @author Jeff Dinkins
60 */
61
62 // PENDING(jeff) - need to provide a specification for
63 // how Mac/OS2/BeOS/etc file systems can modify FileSystemView
64 // to handle their particular type of file system.
65
66 public abstract class FileSystemView {
67
68 static FileSystemView windowsFileSystemView = null;
69 static FileSystemView unixFileSystemView = null;
70 //static FileSystemView macFileSystemView = null;
71 static FileSystemView genericFileSystemView = null;
72
73 private boolean useSystemExtensionHiding =
74 UIManager.getDefaults().getBoolean("FileChooser.useSystemExtensionHiding");
75
76 /**
77 * Returns the file system view.
78 * @return the file system view
79 */
80 public static FileSystemView getFileSystemView() {
81 if(File.separatorChar == '\\') {
82 if(windowsFileSystemView == null) {
83 windowsFileSystemView = new WindowsFileSystemView();
84 }
85 return windowsFileSystemView;
86 }
87
88 if(File.separatorChar == '/') {
89 if(unixFileSystemView == null) {
90 unixFileSystemView = new UnixFileSystemView();
91 }
92 return unixFileSystemView;
93 }
94
95 // if(File.separatorChar == ':') {
96 // if(macFileSystemView == null) {
97 // macFileSystemView = new MacFileSystemView();
98 // }
99 // return macFileSystemView;
100 //}
101
102 if(genericFileSystemView == null) {
103 genericFileSystemView = new GenericFileSystemView();
104 }
105 return genericFileSystemView;
106 }
107
108 /**
109 * Constructs a FileSystemView.
110 */
111 public FileSystemView() {
112 final WeakReference<FileSystemView> weakReference = new WeakReference<FileSystemView>(this);
113
114 UIManager.addPropertyChangeListener(new PropertyChangeListener() {
115 public void propertyChange(PropertyChangeEvent evt) {
116 FileSystemView fileSystemView = weakReference.get();
117
118 if (fileSystemView == null) {
119 // FileSystemView was destroyed
120 UIManager.removePropertyChangeListener(this);
121 } else {
122 if (evt.getPropertyName().equals("lookAndFeel")) {
123 fileSystemView.useSystemExtensionHiding =
124 UIManager.getDefaults().getBoolean("FileChooser.useSystemExtensionHiding");
125 }
126 }
127 }
128 });
129 }
130
414 * on this system
415 */
416 public File[] getRoots() {
417 // Don't cache this array, because filesystem might change
418 File[] roots = (File[])ShellFolder.get("roots");
419
420 for (int i = 0; i < roots.length; i++) {
421 if (isFileSystemRoot(roots[i])) {
422 roots[i] = createFileSystemRoot(roots[i]);
423 }
424 }
425 return roots;
426 }
427
428
429 // Providing default implementations for the remaining methods
430 // because most OS file systems will likely be able to use this
431 // code. If a given OS can't, override these methods in its
432 // implementation.
433
434 /**
435 * Returns the home directory.
436 * @return the home directory
437 */
438 public File getHomeDirectory() {
439 return createFileObject(System.getProperty("user.home"));
440 }
441
442 /**
443 * Return the user's default starting directory for the file chooser.
444 *
445 * @return a <code>File</code> object representing the default
446 * starting folder
447 * @since 1.4
448 */
449 public File getDefaultDirectory() {
450 File f = (File)ShellFolder.get("fileChooserDefaultFolder");
451 if (isFileSystemRoot(f)) {
452 f = createFileSystemRoot(f);
453 }
454 return f;
455 }
456
457 /**
|