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) {
237 public Icon getSystemIcon(File f) {
238 if (f == null) {
239 return null;
240 }
241
242 ShellFolder sf;
243
244 try {
245 sf = getShellFolder(f);
246 } catch (FileNotFoundException e) {
247 return null;
248 }
249
250 Image img = sf.getIcon(false);
251
252 if (img != null) {
253 return new ImageIcon(img, sf.getFolderType());
254 } else {
255 return UIManager.getIcon(f.isDirectory() ? "FileView.directoryIcon" : "FileView.fileIcon");
256 }
257 }
258
259 /**
260 * On Windows, a file can appear in multiple folders, other than its
261 * parent directory in the filesystem. Folder could for example be the
262 * "Desktop" folder which is not the same as file.getParentFile().
263 *
264 * @param folder a <code>File</code> object representing a directory or special folder
265 * @param file a <code>File</code> object
266 * @return <code>true</code> if <code>folder</code> is a directory or special folder and contains <code>file</code>.
267 * @since 1.4
268 */
269 public boolean isParent(File folder, File file) {
270 if (folder == null || file == null) {
271 return false;
272 } else if (folder instanceof ShellFolder) {
273 File parent = file.getParentFile();
274 if (parent != null && parent.equals(folder)) {
275 return true;
276 }
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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 * An icon image query option that requests the small file icon.
78 *
79 * @since 10
80 */
81 public static final int FILE_ICON_SMALL = -1;
82
83 /**
84 * An icon image query option that requests the large file icon.
85 *
86 * @since 10
87 */
88 public static final int FILE_ICON_LARGE = -2;
89
90 /**
91 * Returns the file system view.
92 * @return the file system view
93 */
94 public static FileSystemView getFileSystemView() {
95 if(File.separatorChar == '\\') {
96 if(windowsFileSystemView == null) {
97 windowsFileSystemView = new WindowsFileSystemView();
98 }
99 return windowsFileSystemView;
100 }
101
102 if(File.separatorChar == '/') {
103 if(unixFileSystemView == null) {
104 unixFileSystemView = new UnixFileSystemView();
105 }
106 return unixFileSystemView;
107 }
108
109 // if(File.separatorChar == ':') {
110 // if(macFileSystemView == null) {
251 public Icon getSystemIcon(File f) {
252 if (f == null) {
253 return null;
254 }
255
256 ShellFolder sf;
257
258 try {
259 sf = getShellFolder(f);
260 } catch (FileNotFoundException e) {
261 return null;
262 }
263
264 Image img = sf.getIcon(false);
265
266 if (img != null) {
267 return new ImageIcon(img, sf.getFolderType());
268 } else {
269 return UIManager.getIcon(f.isDirectory() ? "FileView.directoryIcon" : "FileView.fileIcon");
270 }
271 }
272
273 /**
274 * Returns icon image if it is associated with the specified file or
275 * {@code null} otherwise. Depending on the passed {@code size} different
276 * sizes of file icon may be queried. If value of the {@code size} argument
277 * equals to {@code #FILE_ICON_SMALL} or {@code #FILE_ICON_LARGE} then
278 * the small or large file icon variant is returned correspondingly.
279 * For any positive size value the exact file icon size is queried.
280 *
281 * @param file a file
282 * @param size size to query
283 * @return file icon
284 * @throws NullPointerException if {@code file} equals {@code null}
285 * @see #FILE_ICON_SMALL
286 * @see #FILE_ICON_LARGE
287 * @since 10
288 */
289 public ImageIcon getSystemIcon(File file, int size) {
290 if (file == null) {
291 throw new NullPointerException("file is null");
292 }
293 ShellFolder sf;
294 try {
295 sf = ShellFolder.getShellFolder(file);
296 } catch (FileNotFoundException e) {
297 return null;
298 }
299 Image img = null;
300 if (size == FILE_ICON_SMALL) {
301 img = sf.getIcon(false);
302 } else if (size == FILE_ICON_LARGE) {
303 img = sf.getIcon(true);
304 } else if (size > 0) {
305 img = sf.getIcon(size);
306 } else {
307 throw new IllegalArgumentException("Wrong size value +" + size);
308 }
309 if (img != null) {
310 return new ImageIcon(img, sf.getFolderType());
311 }
312 return null;
313 }
314
315 /**
316 * On Windows, a file can appear in multiple folders, other than its
317 * parent directory in the filesystem. Folder could for example be the
318 * "Desktop" folder which is not the same as file.getParentFile().
319 *
320 * @param folder a <code>File</code> object representing a directory or special folder
321 * @param file a <code>File</code> object
322 * @return <code>true</code> if <code>folder</code> is a directory or special folder and contains <code>file</code>.
323 * @since 1.4
324 */
325 public boolean isParent(File folder, File file) {
326 if (folder == null || file == null) {
327 return false;
328 } else if (folder instanceof ShellFolder) {
329 File parent = file.getParentFile();
330 if (parent != null && parent.equals(folder)) {
331 return true;
332 }
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