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| 1 | /* | ||
| 2 | * Copyright (c) 1995, 2010, Oracle and/or its affiliates. All rights reserved. | ||
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | ||
| 4 | * | ||
| 5 | * This code is free software; you can redistribute it and/or modify it | ||
| 6 | * under the terms of the GNU General Public License version 2 only, as | ||
| 7 | * published by the Free Software Foundation. Oracle designates this | ||
| 8 | * particular file as subject to the "Classpath" exception as provided | ||
| 9 | * by Oracle in the LICENSE file that accompanied this code. | ||
| 10 | * | ||
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT | ||
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | ||
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | ||
| 14 | * version 2 for more details (a copy is included in the LICENSE file that | ||
| 15 | * accompanied this code). | ||
| 16 | * | ||
| 17 | * You should have received a copy of the GNU General Public License version | ||
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, | ||
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | ||
| 20 | * | ||
| 21 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | ||
| 22 | * or visit www.oracle.com if you need additional information or have any | ||
| 23 | * questions. | ||
| 24 | */ | ||
| 25 | package java.awt; | ||
| 26 | |||
| 27 | import java.awt.peer.FileDialogPeer; | ||
| 28 | import java.io.FilenameFilter; | ||
| 29 | import java.io.IOException; | ||
| 30 | import java.io.ObjectInputStream; | ||
| 31 | import java.io.File; | ||
| 32 | import sun.awt.AWTAccessor; | ||
| 33 | |||
| 34 | /** | ||
| 35 | * The <code>FileDialog</code> class displays a dialog window | ||
| 36 | * from which the user can select a file. | ||
| 37 | * <p> | ||
| 38 | * Since it is a modal dialog, when the application calls | ||
| 39 | * its <code>show</code> method to display the dialog, | ||
| 40 | * it blocks the rest of the application until the user has | ||
| 41 | * chosen a file. | ||
| 42 | * | ||
| 43 | * @see Window#show | ||
| 44 | * | ||
| 45 | * @author Sami Shaio | ||
| 46 | * @author Arthur van Hoff | ||
| 47 | * @since JDK1.0 | ||
| 48 | */ | ||
| 49 | public class FileDialog extends Dialog { | ||
| 50 | |||
| 51 | /** | ||
| 52 | * This constant value indicates that the purpose of the file | ||
| 53 | * dialog window is to locate a file from which to read. | ||
| 54 | */ | ||
| 55 | public static final int LOAD = 0; | ||
| 56 | |||
| 57 | /** | ||
| 58 | * This constant value indicates that the purpose of the file | ||
| 59 | * dialog window is to locate a file to which to write. | ||
| 60 | */ | ||
| 61 | public static final int SAVE = 1; | ||
| 62 | |||
| 63 | /* | ||
| 64 | * There are two <code>FileDialog</code> modes: <code>LOAD</code> and | ||
| 65 | * <code>SAVE</code>. | ||
| 66 | * This integer will represent one or the other. | ||
| 67 | * If the mode is not specified it will default to <code>LOAD</code>. | ||
| 68 | * | ||
| 69 | * @serial | ||
| 70 | * @see getMode() | ||
| 71 | * @see setMode() | ||
| 72 | * @see java.awt.FileDialog#LOAD | ||
| 73 | * @see java.awt.FileDialog#SAVE | ||
| 74 | */ | ||
| 75 | int mode; | ||
| 76 | |||
| 77 | /* | ||
| 78 | * The string specifying the directory to display | ||
| 79 | * in the file dialog. This variable may be <code>null</code>. | ||
| 80 | * | ||
| 81 | * @serial | ||
| 82 | * @see getDirectory() | ||
| 83 | * @see setDirectory() | ||
| 84 | */ | ||
| 85 | String dir; | ||
| 86 | |||
| 87 | /* | ||
| 88 | * The string specifying the initial value of the | ||
| 89 | * filename text field in the file dialog. | ||
| 90 | * This variable may be <code>null</code>. | ||
| 91 | * | ||
| 92 | * @serial | ||
| 93 | * @see getFile() | ||
| 94 | * @see setFile() | ||
| 95 | */ | ||
| 96 | String file; | ||
| 97 | |||
| 98 | /** | ||
| 99 | * Contains the File instances for all the files that the user selects. | ||
| 100 | * | ||
| 101 | * @serial | ||
| 102 | * @see #getFiles | ||
| 103 | * @since 1.7 | ||
| 104 | */ | ||
| 105 | private File[] files; | ||
| 106 | |||
| 107 | /** | ||
| 108 | * Represents whether the file dialog allows the multiple file selection. | ||
| 109 | * | ||
| 110 | * @serial | ||
| 111 | * @see #setMultipleMode | ||
| 112 | * @see #isMultipleMode | ||
| 113 | * @since 1.7 | ||
| 114 | */ | ||
| 115 | private boolean multipleMode = false; | ||
| 116 | |||
| 117 | /* | ||
| 118 | * The filter used as the file dialog's filename filter. | ||
| 119 | * The file dialog will only be displaying files whose | ||
| 120 | * names are accepted by this filter. | ||
| 121 | * This variable may be <code>null</code>. | ||
| 122 | * | ||
| 123 | * @serial | ||
| 124 | * @see #getFilenameFilter() | ||
| 125 | * @see #setFilenameFilter() | ||
| 126 | * @see FileNameFilter | ||
| 127 | */ | ||
| 128 | FilenameFilter filter; | ||
| 129 | |||
| 130 | private static final String base = "filedlg"; | ||
| 131 | private static int nameCounter = 0; | ||
| 132 | |||
| 133 | /* | ||
| 134 | * JDK 1.1 serialVersionUID | ||
| 135 | */ | ||
| 136 | private static final long serialVersionUID = 5035145889651310422L; | ||
| 137 | |||
| 138 | |||
| 139 | static { | ||
| 140 | /* ensure that the necessary native libraries are loaded */ | ||
| 141 | Toolkit.loadLibraries(); | ||
| 142 | if (!GraphicsEnvironment.isHeadless()) { | ||
| 143 | initIDs(); | ||
| 144 | } | ||
| 145 | } | ||
| 146 | |||
| 147 | static { | ||
| 148 | AWTAccessor.setFileDialogAccessor( | ||
| 149 | new AWTAccessor.FileDialogAccessor() { | ||
| 150 | public void setFiles(FileDialog fileDialog, String directory, String files[]) { | ||
| 151 | fileDialog.setFiles(directory, files); | ||
| 152 | } | ||
| 153 | public void setFile(FileDialog fileDialog, String file) { | ||
| 154 | fileDialog.file = ("".equals(file)) ? null : file; | ||
| 155 | } | ||
| 156 | public void setDirectory(FileDialog fileDialog, String directory) { | ||
| 157 | fileDialog.dir = ("".equals(directory)) ? null : directory; | ||
| 158 | } | ||
| 159 | public boolean isMultipleMode(FileDialog fileDialog) { | ||
| 160 | synchronized (fileDialog.getObjectLock()) { | ||
| 161 | return fileDialog.multipleMode; | ||
| 162 | } | ||
| 163 | } | ||
| 164 | }); | ||
| 165 | } | ||
| 166 | |||
| 167 | /** | ||
| 168 | * Initialize JNI field and method IDs for fields that may be | ||
| 169 | accessed from C. | ||
| 170 | */ | ||
| 171 | private static native void initIDs(); | ||
| 172 | |||
| 173 | /** | ||
| 174 | * Creates a file dialog for loading a file. The title of the | ||
| 175 | * file dialog is initially empty. This is a convenience method for | ||
| 176 | * <code>FileDialog(parent, "", LOAD)</code>. | ||
| 177 | * | ||
| 178 | * @param parent the owner of the dialog | ||
| 179 | * @since JDK1.1 | ||
| 180 | */ | ||
| 181 | public FileDialog(Frame parent) { | ||
| 182 | this(parent, "", LOAD); | ||
| 183 | } | ||
| 184 | |||
| 185 | /** | ||
| 186 | * Creates a file dialog window with the specified title for loading | ||
| 187 | * a file. The files shown are those in the current directory. | ||
| 188 | * This is a convenience method for | ||
| 189 | * <code>FileDialog(parent, title, LOAD)</code>. | ||
| 190 | * | ||
| 191 | * @param parent the owner of the dialog | ||
| 192 | * @param title the title of the dialog | ||
| 193 | */ | ||
| 194 | public FileDialog(Frame parent, String title) { | ||
| 195 | this(parent, title, LOAD); | ||
| 196 | } | ||
| 197 | |||
| 198 | /** | ||
| 199 | * Creates a file dialog window with the specified title for loading | ||
| 200 | * or saving a file. | ||
| 201 | * <p> | ||
| 202 | * If the value of <code>mode</code> is <code>LOAD</code>, then the | ||
| 203 | * file dialog is finding a file to read, and the files shown are those | ||
| 204 | * in the current directory. If the value of | ||
| 205 | * <code>mode</code> is <code>SAVE</code>, the file dialog is finding | ||
| 206 | * a place to write a file. | ||
| 207 | * | ||
| 208 | * @param parent the owner of the dialog | ||
| 209 | * @param title the title of the dialog | ||
| 210 | * @param mode the mode of the dialog; either | ||
| 211 | * <code>FileDialog.LOAD</code> or <code>FileDialog.SAVE</code> | ||
| 212 | * @exception IllegalArgumentException if an illegal file | ||
| 213 | * dialog mode is supplied | ||
| 214 | * @see java.awt.FileDialog#LOAD | ||
| 215 | * @see java.awt.FileDialog#SAVE | ||
| 216 | */ | ||
| 217 | public FileDialog(Frame parent, String title, int mode) { | ||
| 218 | super(parent, title, true); | ||
| 219 | this.setMode(mode); | ||
| 220 | setLayout(null); | ||
| 221 | } | ||
| 222 | |||
| 223 | /** | ||
| 224 | * Creates a file dialog for loading a file. The title of the | ||
| 225 | * file dialog is initially empty. This is a convenience method for | ||
| 226 | * <code>FileDialog(parent, "", LOAD)</code>. | ||
| 227 | * | ||
| 228 | * @param parent the owner of the dialog | ||
| 229 | * @exception java.lang.IllegalArgumentException if the <code>parent</code>'s | ||
| 230 | * <code>GraphicsConfiguration</code> | ||
| 231 | * is not from a screen device; | ||
| 232 | * @exception java.lang.IllegalArgumentException if <code>parent</code> | ||
| 233 | * is <code>null</code>; this exception is always thrown when | ||
| 234 | * <code>GraphicsEnvironment.isHeadless</code> | ||
| 235 | * returns <code>true</code> | ||
| 236 | * @see java.awt.GraphicsEnvironment#isHeadless | ||
| 237 | * @since 1.5 | ||
| 238 | */ | ||
| 239 | public FileDialog(Dialog parent) { | ||
| 240 | this(parent, "", LOAD); | ||
| 241 | } | ||
| 242 | |||
| 243 | /** | ||
| 244 | * Creates a file dialog window with the specified title for loading | ||
| 245 | * a file. The files shown are those in the current directory. | ||
| 246 | * This is a convenience method for | ||
| 247 | * <code>FileDialog(parent, title, LOAD)</code>. | ||
| 248 | * | ||
| 249 | * @param parent the owner of the dialog | ||
| 250 | * @param title the title of the dialog; a <code>null</code> value | ||
| 251 | * will be accepted without causing a | ||
| 252 | * <code>NullPointerException</code> to be thrown | ||
| 253 | * @exception java.lang.IllegalArgumentException if the <code>parent</code>'s | ||
| 254 | * <code>GraphicsConfiguration</code> | ||
| 255 | * is not from a screen device; | ||
| 256 | * @exception java.lang.IllegalArgumentException if <code>parent</code> | ||
| 257 | * is <code>null</code>; this exception is always thrown when | ||
| 258 | * <code>GraphicsEnvironment.isHeadless</code> | ||
| 259 | * returns <code>true</code> | ||
| 260 | * @see java.awt.GraphicsEnvironment#isHeadless | ||
| 261 | * @since 1.5 | ||
| 262 | */ | ||
| 263 | public FileDialog(Dialog parent, String title) { | ||
| 264 | this(parent, title, LOAD); | ||
| 265 | } | ||
| 266 | |||
| 267 | /** | ||
| 268 | * Creates a file dialog window with the specified title for loading | ||
| 269 | * or saving a file. | ||
| 270 | * <p> | ||
| 271 | * If the value of <code>mode</code> is <code>LOAD</code>, then the | ||
| 272 | * file dialog is finding a file to read, and the files shown are those | ||
| 273 | * in the current directory. If the value of | ||
| 274 | * <code>mode</code> is <code>SAVE</code>, the file dialog is finding | ||
| 275 | * a place to write a file. | ||
| 276 | * | ||
| 277 | * @param parent the owner of the dialog | ||
| 278 | * @param title the title of the dialog; a <code>null</code> value | ||
| 279 | * will be accepted without causing a | ||
| 280 | * <code>NullPointerException</code> to be thrown | ||
| 281 | * @param mode the mode of the dialog; either | ||
| 282 | * <code>FileDialog.LOAD</code> or <code>FileDialog.SAVE</code> | ||
| 283 | * @exception java.lang.IllegalArgumentException if an illegal | ||
| 284 | * file dialog mode is supplied; | ||
| 285 | * @exception java.lang.IllegalArgumentException if the <code>parent</code>'s | ||
| 286 | * <code>GraphicsConfiguration</code> | ||
| 287 | * is not from a screen device; | ||
| 288 | * @exception java.lang.IllegalArgumentException if <code>parent</code> | ||
| 289 | * is <code>null</code>; this exception is always thrown when | ||
| 290 | * <code>GraphicsEnvironment.isHeadless</code> | ||
| 291 | * returns <code>true</code> | ||
| 292 | * @see java.awt.GraphicsEnvironment#isHeadless | ||
| 293 | * @see java.awt.FileDialog#LOAD | ||
| 294 | * @see java.awt.FileDialog#SAVE | ||
| 295 | * @since 1.5 | ||
| 296 | */ | ||
| 297 | public FileDialog(Dialog parent, String title, int mode) { | ||
| 298 | super(parent, title, true); | ||
| 299 | this.setMode(mode); | ||
| 300 | setLayout(null); | ||
| 301 | } | ||
| 302 | |||
| 303 | /** | ||
| 304 | * Constructs a name for this component. Called by <code>getName()</code> | ||
| 305 | * when the name is <code>null</code>. | ||
| 306 | */ | ||
| 307 | String constructComponentName() { | ||
| 308 | synchronized (FileDialog.class) { | ||
| 309 | return base + nameCounter++; | ||
| 310 | } | ||
| 311 | } | ||
| 312 | |||
| 313 | /** | ||
| 314 | * Creates the file dialog's peer. The peer allows us to change the look | ||
| 315 | * of the file dialog without changing its functionality. | ||
| 316 | */ | ||
| 317 | public void addNotify() { | ||
| 318 | synchronized(getTreeLock()) { | ||
| 319 | if (parent != null && parent.getPeer() == null) { | ||
| 320 | parent.addNotify(); | ||
| 321 | } | ||
| 322 | if (peer == null) | ||
| 323 | peer = getToolkit().createFileDialog(this); | ||
| 324 | super.addNotify(); | ||
| 325 | } | ||
| 326 | } | ||
| 327 | |||
| 328 | /** | ||
| 329 | * Indicates whether this file dialog box is for loading from a file | ||
| 330 | * or for saving to a file. | ||
| 331 | * | ||
| 332 | * @return the mode of this file dialog window, either | ||
| 333 | * <code>FileDialog.LOAD</code> or | ||
| 334 | * <code>FileDialog.SAVE</code> | ||
| 335 | * @see java.awt.FileDialog#LOAD | ||
| 336 | * @see java.awt.FileDialog#SAVE | ||
| 337 | * @see java.awt.FileDialog#setMode | ||
| 338 | */ | ||
| 339 | public int getMode() { | ||
| 340 | return mode; | ||
| 341 | } | ||
| 342 | |||
| 343 | /** | ||
| 344 | * Sets the mode of the file dialog. If <code>mode</code> is not | ||
| 345 | * a legal value, an exception will be thrown and <code>mode</code> | ||
| 346 | * will not be set. | ||
| 347 | * | ||
| 348 | * @param mode the mode for this file dialog, either | ||
| 349 | * <code>FileDialog.LOAD</code> or | ||
| 350 | * <code>FileDialog.SAVE</code> | ||
| 351 | * @see java.awt.FileDialog#LOAD | ||
| 352 | * @see java.awt.FileDialog#SAVE | ||
| 353 | * @see java.awt.FileDialog#getMode | ||
| 354 | * @exception IllegalArgumentException if an illegal file | ||
| 355 | * dialog mode is supplied | ||
| 356 | * @since JDK1.1 | ||
| 357 | */ | ||
| 358 | public void setMode(int mode) { | ||
| 359 | switch (mode) { | ||
| 360 | case LOAD: | ||
| 361 | case SAVE: | ||
| 362 | this.mode = mode; | ||
| 363 | break; | ||
| 364 | default: | ||
| 365 | throw new IllegalArgumentException("illegal file dialog mode"); | ||
| 366 | } | ||
| 367 | } | ||
| 368 | |||
| 369 | /** | ||
| 370 | * Gets the directory of this file dialog. | ||
| 371 | * | ||
| 372 | * @return the (potentially <code>null</code> or invalid) | ||
| 373 | * directory of this <code>FileDialog</code> | ||
| 374 | * @see java.awt.FileDialog#setDirectory | ||
| 375 | */ | ||
| 376 | public String getDirectory() { | ||
| 377 | return dir; | ||
| 378 | } | ||
| 379 | |||
| 380 | /** | ||
| 381 | * Sets the directory of this file dialog window to be the | ||
| 382 | * specified directory. Specifying a <code>null</code> or an | ||
| 383 | * invalid directory implies an implementation-defined default. | ||
| 384 | * This default will not be realized, however, until the user | ||
| 385 | * has selected a file. Until this point, <code>getDirectory()</code> | ||
| 386 | * will return the value passed into this method. | ||
| 387 | * <p> | ||
| 388 | * Specifying "" as the directory is exactly equivalent to | ||
| 389 | * specifying <code>null</code> as the directory. | ||
| 390 | * | ||
| 391 | * @param dir the specified directory | ||
| 392 | * @see java.awt.FileDialog#getDirectory | ||
| 393 | */ | ||
| 394 | public void setDirectory(String dir) { | ||
| 395 | this.dir = (dir != null && dir.equals("")) ? null : dir; | ||
| 396 | FileDialogPeer peer = (FileDialogPeer)this.peer; | ||
| 397 | if (peer != null) { | ||
| 398 | peer.setDirectory(this.dir); | ||
| 399 | } | ||
| 400 | } | ||
| 401 | |||
| 402 | /** | ||
| 403 | * Gets the selected file of this file dialog. If the user | ||
| 404 | * selected <code>CANCEL</code>, the returned file is <code>null</code>. | ||
| 405 | * | ||
| 406 | * @return the currently selected file of this file dialog window, | ||
| 407 | * or <code>null</code> if none is selected | ||
| 408 | * @see java.awt.FileDialog#setFile | ||
| 409 | */ | ||
| 410 | public String getFile() { | ||
| 411 | return file; | ||
| 412 | } | ||
| 413 | |||
| 414 | /** | ||
| 415 | * Returns files that the user selects. | ||
| 416 | * <p> | ||
| 417 | * If the user cancels the file dialog, | ||
| 418 | * then the method returns an empty array. | ||
| 419 | * | ||
| 420 | * @return files that the user selects or an empty array | ||
| 421 | * if the user cancels the file dialog. | ||
| 422 | * @see #setFile(String) | ||
| 423 | * @see #getFile | ||
| 424 | * @since 1.7 | ||
| 425 | */ | ||
| 426 | public File[] getFiles() { | ||
| 427 | synchronized (getObjectLock()) { | ||
| 428 | if (files != null) { | ||
| 429 | return files.clone(); | ||
| 430 | } else { | ||
| 431 | return new File[0]; | ||
| 432 | } | ||
| 433 | } | ||
| 434 | } | ||
| 435 | |||
| 436 | /** | ||
| 437 | * Stores the names of all the files that the user selects. | ||
| 438 | * | ||
| 439 | * Note that the method is private and it's intended to be used | ||
| 440 | * by the peers through the AWTAccessor API. | ||
| 441 | * | ||
| 442 | * @param directory the current directory | ||
| 443 | * @param files the array that contains the short names of | ||
| 444 | * all the files that the user selects. | ||
| 445 | * | ||
| 446 | * @see #getFiles | ||
| 447 | * @since 1.7 | ||
| 448 | */ | ||
| 449 | private void setFiles(String directory, String files[]) { | ||
| 450 | synchronized (getObjectLock()) { | ||
| 451 | int filesNumber = (files != null) ? files.length : 0; | ||
| 452 | this.files = new File[filesNumber]; | ||
| 453 | for (int i = 0; i < filesNumber; i++) { | ||
| 454 | this.files[i] = new File(directory, files[i]); | ||
| 455 | } | ||
| 456 | } | ||
| 457 | } | ||
| 458 | |||
| 459 | /** | ||
| 460 | * Sets the selected file for this file dialog window to be the | ||
| 461 | * specified file. This file becomes the default file if it is set | ||
| 462 | * before the file dialog window is first shown. | ||
| 463 | * <p> | ||
| 464 | * Specifying "" as the file is exactly equivalent to specifying | ||
| 465 | * <code>null</code> | ||
| 466 | * as the file. | ||
| 467 | * | ||
| 468 | * @param file the file being set | ||
| 469 | * @see #getFile | ||
| 470 | * @see #getFiles | ||
| 471 | */ | ||
| 472 | public void setFile(String file) { | ||
| 473 | this.file = (file != null && file.equals("")) ? null : file; | ||
| 474 | FileDialogPeer peer = (FileDialogPeer)this.peer; | ||
| 475 | if (peer != null) { | ||
| 476 | peer.setFile(this.file); | ||
| 477 | } | ||
| 478 | } | ||
| 479 | |||
| 480 | /** | ||
| 481 | * Enables or disables multiple file selection for the file dialog. | ||
| 482 | * | ||
| 483 | * @param enable if {@code true}, multiple file selection is enabled; | ||
| 484 | * {@code false} - disabled. | ||
| 485 | * @see #isMultipleMode | ||
| 486 | * @since 1.7 | ||
| 487 | */ | ||
| 488 | public void setMultipleMode(boolean enable) { | ||
| 489 | synchronized (getObjectLock()) { | ||
| 490 | this.multipleMode = enable; | ||
| 491 | } | ||
| 492 | } | ||
| 493 | |||
| 494 | /** | ||
| 495 | * Returns whether the file dialog allows the multiple file selection. | ||
| 496 | * | ||
| 497 | * @return {@code true} if the file dialog allows the multiple | ||
| 498 | * file selection; {@code false} otherwise. | ||
| 499 | * @see #setMultipleMode | ||
| 500 | * @since 1.7 | ||
| 501 | */ | ||
| 502 | public boolean isMultipleMode() { | ||
| 503 | synchronized (getObjectLock()) { | ||
| 504 | return multipleMode; | ||
| 505 | } | ||
| 506 | } | ||
| 507 | |||
| 508 | /** | ||
| 509 | * Determines this file dialog's filename filter. A filename filter | ||
| 510 | * allows the user to specify which files appear in the file dialog | ||
| 511 | * window. Filename filters do not function in Sun's reference | ||
| 512 | * implementation for Microsoft Windows. | ||
| 513 | * | ||
| 514 | * @return this file dialog's filename filter | ||
| 515 | * @see java.io.FilenameFilter | ||
| 516 | * @see java.awt.FileDialog#setFilenameFilter | ||
| 517 | */ | ||
| 518 | public FilenameFilter getFilenameFilter() { | ||
| 519 | return filter; | ||
| 520 | } | ||
| 521 | |||
| 522 | /** | ||
| 523 | * Sets the filename filter for this file dialog window to the | ||
| 524 | * specified filter. | ||
| 525 | * Filename filters do not function in Sun's reference | ||
| 526 | * implementation for Microsoft Windows. | ||
| 527 | * | ||
| 528 | * @param filter the specified filter | ||
| 529 | * @see java.io.FilenameFilter | ||
| 530 | * @see java.awt.FileDialog#getFilenameFilter | ||
| 531 | */ | ||
| 532 | public synchronized void setFilenameFilter(FilenameFilter filter) { | ||
| 533 | this.filter = filter; | ||
| 534 | FileDialogPeer peer = (FileDialogPeer)this.peer; | ||
| 535 | if (peer != null) { | ||
| 536 | peer.setFilenameFilter(filter); | ||
| 537 | } | ||
| 538 | } | ||
| 539 | |||
| 540 | /** | ||
| 541 | * Reads the <code>ObjectInputStream</code> and performs | ||
| 542 | * a backwards compatibility check by converting | ||
| 543 | * either a <code>dir</code> or a <code>file</code> | ||
| 544 | * equal to an empty string to <code>null</code>. | ||
| 545 | * | ||
| 546 | * @param s the <code>ObjectInputStream</code> to read | ||
| 547 | */ | ||
| 548 | private void readObject(ObjectInputStream s) | ||
| 549 | throws ClassNotFoundException, IOException | ||
| 550 | { | ||
| 551 | s.defaultReadObject(); | ||
| 552 | |||
| 553 | // 1.1 Compatibility: "" is not converted to null in 1.1 | ||
| 554 | if (dir != null && dir.equals("")) { | ||
| 555 | dir = null; | ||
| 556 | } | ||
| 557 | if (file != null && file.equals("")) { | ||
| 558 | file = null; | ||
| 559 | } | ||
| 560 | } | ||
| 561 | |||
| 562 | /** | ||
| 563 | * Returns a string representing the state of this <code>FileDialog</code> | ||
| 564 | * window. This method is intended to be used only for debugging purposes, | ||
| 565 | * and the content and format of the returned string may vary between | ||
| 566 | * implementations. The returned string may be empty but may not be | ||
| 567 | * <code>null</code>. | ||
| 568 | * | ||
| 569 | * @return the parameter string of this file dialog window | ||
| 570 | */ | ||
| 571 | protected String paramString() { | ||
| 572 | String str = super.paramString(); | ||
| 573 | str += ",dir= " + dir; | ||
| 574 | str += ",file= " + file; | ||
| 575 | return str + ((mode == LOAD) ? ",load" : ",save"); | ||
| 576 | } | ||
| 577 | |||
| 578 | boolean postsOldMouseEvents() { | ||
| 579 | return false; | ||
| 580 | } | ||
| 581 | } | ||