J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 1995-2006 Sun Microsystems, Inc. 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. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any questions. |
| 24 | */ |
| 25 | package java.awt; |
| 26 | |
| 27 | import java.awt.peer.FramePeer; |
| 28 | import java.awt.event.*; |
| 29 | import java.util.ArrayList; |
| 30 | import java.util.Arrays; |
| 31 | import java.util.List; |
| 32 | import java.util.Vector; |
| 33 | import java.io.Serializable; |
| 34 | import java.io.ObjectOutputStream; |
| 35 | import java.io.ObjectInputStream; |
| 36 | import java.io.IOException; |
| 37 | import sun.awt.AppContext; |
| 38 | import sun.awt.SunToolkit; |
| 39 | import java.lang.ref.WeakReference; |
| 40 | import javax.accessibility.*; |
| 41 | |
| 42 | /** |
| 43 | * A <code>Frame</code> is a top-level window with a title and a border. |
| 44 | * <p> |
| 45 | * The size of the frame includes any area designated for the |
| 46 | * border. The dimensions of the border area may be obtained |
| 47 | * using the <code>getInsets</code> method, however, since |
| 48 | * these dimensions are platform-dependent, a valid insets |
| 49 | * value cannot be obtained until the frame is made displayable |
| 50 | * by either calling <code>pack</code> or <code>show</code>. |
| 51 | * Since the border area is included in the overall size of the |
| 52 | * frame, the border effectively obscures a portion of the frame, |
| 53 | * constraining the area available for rendering and/or displaying |
| 54 | * subcomponents to the rectangle which has an upper-left corner |
| 55 | * location of <code>(insets.left, insets.top)</code>, and has a size of |
| 56 | * <code>width - (insets.left + insets.right)</code> by |
| 57 | * <code>height - (insets.top + insets.bottom)</code>. |
| 58 | * <p> |
| 59 | * The default layout for a frame is <code>BorderLayout</code>. |
| 60 | * <p> |
| 61 | * A frame may have its native decorations (i.e. <code>Frame</code> |
| 62 | * and <code>Titlebar</code>) turned off |
| 63 | * with <code>setUndecorated</code>. This can only be done while the frame |
| 64 | * is not {@link Component#isDisplayable() displayable}. |
| 65 | * <p> |
| 66 | * In a multi-screen environment, you can create a <code>Frame</code> |
| 67 | * on a different screen device by constructing the <code>Frame</code> |
| 68 | * with {@link #Frame(GraphicsConfiguration)} or |
| 69 | * {@link #Frame(String title, GraphicsConfiguration)}. The |
| 70 | * <code>GraphicsConfiguration</code> object is one of the |
| 71 | * <code>GraphicsConfiguration</code> objects of the target screen |
| 72 | * device. |
| 73 | * <p> |
| 74 | * In a virtual device multi-screen environment in which the desktop |
| 75 | * area could span multiple physical screen devices, the bounds of all |
| 76 | * configurations are relative to the virtual-coordinate system. The |
| 77 | * origin of the virtual-coordinate system is at the upper left-hand |
| 78 | * corner of the primary physical screen. Depending on the location |
| 79 | * of the primary screen in the virtual device, negative coordinates |
| 80 | * are possible, as shown in the following figure. |
| 81 | * <p> |
| 82 | * <img src="doc-files/MultiScreen.gif" |
| 83 | * alt="Diagram of virtual device encompassing three physical screens and one primary physical screen. The primary physical screen |
| 84 | * shows (0,0) coords while a different physical screen shows (-80,-100) coords." |
| 85 | * ALIGN=center HSPACE=10 VSPACE=7> |
| 86 | * <p> |
| 87 | * In such an environment, when calling <code>setLocation</code>, |
| 88 | * you must pass a virtual coordinate to this method. Similarly, |
| 89 | * calling <code>getLocationOnScreen</code> on a <code>Frame</code> |
| 90 | * returns virtual device coordinates. Call the <code>getBounds</code> |
| 91 | * method of a <code>GraphicsConfiguration</code> to find its origin in |
| 92 | * the virtual coordinate system. |
| 93 | * <p> |
| 94 | * The following code sets the |
| 95 | * location of the <code>Frame</code> at (10, 10) relative |
| 96 | * to the origin of the physical screen of the corresponding |
| 97 | * <code>GraphicsConfiguration</code>. If the bounds of the |
| 98 | * <code>GraphicsConfiguration</code> is not taken into account, the |
| 99 | * <code>Frame</code> location would be set at (10, 10) relative to the |
| 100 | * virtual-coordinate system and would appear on the primary physical |
| 101 | * screen, which might be different from the physical screen of the |
| 102 | * specified <code>GraphicsConfiguration</code>. |
| 103 | * |
| 104 | * <pre> |
| 105 | * Frame f = new Frame(GraphicsConfiguration gc); |
| 106 | * Rectangle bounds = gc.getBounds(); |
| 107 | * f.setLocation(10 + bounds.x, 10 + bounds.y); |
| 108 | * </pre> |
| 109 | * |
| 110 | * <p> |
| 111 | * Frames are capable of generating the following types of |
| 112 | * <code>WindowEvent</code>s: |
| 113 | * <ul> |
| 114 | * <li><code>WINDOW_OPENED</code> |
| 115 | * <li><code>WINDOW_CLOSING</code>: |
| 116 | * <br>If the program doesn't |
| 117 | * explicitly hide or dispose the window while processing |
| 118 | * this event, the window close operation is canceled. |
| 119 | * <li><code>WINDOW_CLOSED</code> |
| 120 | * <li><code>WINDOW_ICONIFIED</code> |
| 121 | * <li><code>WINDOW_DEICONIFIED</code> |
| 122 | * <li><code>WINDOW_ACTIVATED</code> |
| 123 | * <li><code>WINDOW_DEACTIVATED</code> |
| 124 | * <li><code>WINDOW_GAINED_FOCUS</code> |
| 125 | * <li><code>WINDOW_LOST_FOCUS</code> |
| 126 | * <li><code>WINDOW_STATE_CHANGED</code> |
| 127 | * </ul> |
| 128 | * |
| 129 | * @author Sami Shaio |
| 130 | * @see WindowEvent |
| 131 | * @see Window#addWindowListener |
| 132 | * @since JDK1.0 |
| 133 | */ |
| 134 | public class Frame extends Window implements MenuContainer { |
| 135 | |
| 136 | /* Note: These are being obsoleted; programs should use the Cursor class |
| 137 | * variables going forward. See Cursor and Component.setCursor. |
| 138 | */ |
| 139 | |
| 140 | /** |
| 141 | * @deprecated replaced by <code>Cursor.DEFAULT_CURSOR</code>. |
| 142 | */ |
| 143 | @Deprecated |
| 144 | public static final int DEFAULT_CURSOR = Cursor.DEFAULT_CURSOR; |
| 145 | |
| 146 | |
| 147 | /** |
| 148 | * @deprecated replaced by <code>Cursor.CROSSHAIR_CURSOR</code>. |
| 149 | */ |
| 150 | @Deprecated |
| 151 | public static final int CROSSHAIR_CURSOR = Cursor.CROSSHAIR_CURSOR; |
| 152 | |
| 153 | /** |
| 154 | * @deprecated replaced by <code>Cursor.TEXT_CURSOR</code>. |
| 155 | */ |
| 156 | @Deprecated |
| 157 | public static final int TEXT_CURSOR = Cursor.TEXT_CURSOR; |
| 158 | |
| 159 | /** |
| 160 | * @deprecated replaced by <code>Cursor.WAIT_CURSOR</code>. |
| 161 | */ |
| 162 | @Deprecated |
| 163 | public static final int WAIT_CURSOR = Cursor.WAIT_CURSOR; |
| 164 | |
| 165 | /** |
| 166 | * @deprecated replaced by <code>Cursor.SW_RESIZE_CURSOR</code>. |
| 167 | */ |
| 168 | @Deprecated |
| 169 | public static final int SW_RESIZE_CURSOR = Cursor.SW_RESIZE_CURSOR; |
| 170 | |
| 171 | /** |
| 172 | * @deprecated replaced by <code>Cursor.SE_RESIZE_CURSOR</code>. |
| 173 | */ |
| 174 | @Deprecated |
| 175 | public static final int SE_RESIZE_CURSOR = Cursor.SE_RESIZE_CURSOR; |
| 176 | |
| 177 | /** |
| 178 | * @deprecated replaced by <code>Cursor.NW_RESIZE_CURSOR</code>. |
| 179 | */ |
| 180 | @Deprecated |
| 181 | public static final int NW_RESIZE_CURSOR = Cursor.NW_RESIZE_CURSOR; |
| 182 | |
| 183 | /** |
| 184 | * @deprecated replaced by <code>Cursor.NE_RESIZE_CURSOR</code>. |
| 185 | */ |
| 186 | @Deprecated |
| 187 | public static final int NE_RESIZE_CURSOR = Cursor.NE_RESIZE_CURSOR; |
| 188 | |
| 189 | /** |
| 190 | * @deprecated replaced by <code>Cursor.N_RESIZE_CURSOR</code>. |
| 191 | */ |
| 192 | @Deprecated |
| 193 | public static final int N_RESIZE_CURSOR = Cursor.N_RESIZE_CURSOR; |
| 194 | |
| 195 | /** |
| 196 | * @deprecated replaced by <code>Cursor.S_RESIZE_CURSOR</code>. |
| 197 | */ |
| 198 | @Deprecated |
| 199 | public static final int S_RESIZE_CURSOR = Cursor.S_RESIZE_CURSOR; |
| 200 | |
| 201 | /** |
| 202 | * @deprecated replaced by <code>Cursor.W_RESIZE_CURSOR</code>. |
| 203 | */ |
| 204 | @Deprecated |
| 205 | public static final int W_RESIZE_CURSOR = Cursor.W_RESIZE_CURSOR; |
| 206 | |
| 207 | /** |
| 208 | * @deprecated replaced by <code>Cursor.E_RESIZE_CURSOR</code>. |
| 209 | */ |
| 210 | @Deprecated |
| 211 | public static final int E_RESIZE_CURSOR = Cursor.E_RESIZE_CURSOR; |
| 212 | |
| 213 | /** |
| 214 | * @deprecated replaced by <code>Cursor.HAND_CURSOR</code>. |
| 215 | */ |
| 216 | @Deprecated |
| 217 | public static final int HAND_CURSOR = Cursor.HAND_CURSOR; |
| 218 | |
| 219 | /** |
| 220 | * @deprecated replaced by <code>Cursor.MOVE_CURSOR</code>. |
| 221 | */ |
| 222 | @Deprecated |
| 223 | public static final int MOVE_CURSOR = Cursor.MOVE_CURSOR; |
| 224 | |
| 225 | |
| 226 | /** |
| 227 | * Frame is in the "normal" state. This symbolic constant names a |
| 228 | * frame state with all state bits cleared. |
| 229 | * @see #setExtendedState(int) |
| 230 | * @see #getExtendedState |
| 231 | */ |
| 232 | public static final int NORMAL = 0; |
| 233 | |
| 234 | /** |
| 235 | * This state bit indicates that frame is iconified. |
| 236 | * @see #setExtendedState(int) |
| 237 | * @see #getExtendedState |
| 238 | */ |
| 239 | public static final int ICONIFIED = 1; |
| 240 | |
| 241 | /** |
| 242 | * This state bit indicates that frame is maximized in the |
| 243 | * horizontal direction. |
| 244 | * @see #setExtendedState(int) |
| 245 | * @see #getExtendedState |
| 246 | * @since 1.4 |
| 247 | */ |
| 248 | public static final int MAXIMIZED_HORIZ = 2; |
| 249 | |
| 250 | /** |
| 251 | * This state bit indicates that frame is maximized in the |
| 252 | * vertical direction. |
| 253 | * @see #setExtendedState(int) |
| 254 | * @see #getExtendedState |
| 255 | * @since 1.4 |
| 256 | */ |
| 257 | public static final int MAXIMIZED_VERT = 4; |
| 258 | |
| 259 | /** |
| 260 | * This state bit mask indicates that frame is fully maximized |
| 261 | * (that is both horizontally and vertically). It is just a |
| 262 | * convenience alias for |
| 263 | * <code>MAXIMIZED_VERT | MAXIMIZED_HORIZ</code>. |
| 264 | * |
| 265 | * <p>Note that the correct test for frame being fully maximized is |
| 266 | * <pre> |
| 267 | * (state & Frame.MAXIMIZED_BOTH) == Frame.MAXIMIZED_BOTH |
| 268 | * </pre> |
| 269 | * |
| 270 | * <p>To test is frame is maximized in <em>some</em> direction use |
| 271 | * <pre> |
| 272 | * (state & Frame.MAXIMIZED_BOTH) != 0 |
| 273 | * </pre> |
| 274 | * |
| 275 | * @see #setExtendedState(int) |
| 276 | * @see #getExtendedState |
| 277 | * @since 1.4 |
| 278 | */ |
| 279 | public static final int MAXIMIZED_BOTH = MAXIMIZED_VERT | MAXIMIZED_HORIZ; |
| 280 | |
| 281 | /** |
| 282 | * Maximized bounds for this frame. |
| 283 | * @see #setMaximizedBounds(Rectangle) |
| 284 | * @see #getMaximizedBounds |
| 285 | * @serial |
| 286 | * @since 1.4 |
| 287 | */ |
| 288 | Rectangle maximizedBounds; |
| 289 | |
| 290 | |
| 291 | /** |
| 292 | * This is the title of the frame. It can be changed |
| 293 | * at any time. <code>title</code> can be null and if |
| 294 | * this is the case the <code>title</code> = "". |
| 295 | * |
| 296 | * @serial |
| 297 | * @see #getTitle |
| 298 | * @see #setTitle(String) |
| 299 | */ |
| 300 | String title = "Untitled"; |
| 301 | |
| 302 | /** |
| 303 | * The frames menubar. If <code>menuBar</code> = null |
| 304 | * the frame will not have a menubar. |
| 305 | * |
| 306 | * @serial |
| 307 | * @see #getMenuBar |
| 308 | * @see #setMenuBar(MenuBar) |
| 309 | */ |
| 310 | MenuBar menuBar; |
| 311 | |
| 312 | /** |
| 313 | * This field indicates whether the frame is resizable. |
| 314 | * This property can be changed at any time. |
| 315 | * <code>resizable</code> will be true if the frame is |
| 316 | * resizable, otherwise it will be false. |
| 317 | * |
| 318 | * @serial |
| 319 | * @see #isResizable() |
| 320 | */ |
| 321 | boolean resizable = true; |
| 322 | |
| 323 | /** |
| 324 | * This field indicates whether the frame is undecorated. |
| 325 | * This property can only be changed while the frame is not displayable. |
| 326 | * <code>undecorated</code> will be true if the frame is |
| 327 | * undecorated, otherwise it will be false. |
| 328 | * |
| 329 | * @serial |
| 330 | * @see #setUndecorated(boolean) |
| 331 | * @see #isUndecorated() |
| 332 | * @see Component#isDisplayable() |
| 333 | * @since 1.4 |
| 334 | */ |
| 335 | boolean undecorated = false; |
| 336 | |
| 337 | /** |
| 338 | * <code>mbManagement</code> is only used by the Motif implementation. |
| 339 | * |
| 340 | * @serial |
| 341 | */ |
| 342 | boolean mbManagement = false; /* used only by the Motif impl. */ |
| 343 | |
| 344 | // XXX: uwe: abuse old field for now |
| 345 | // will need to take care of serialization |
| 346 | private int state = NORMAL; |
| 347 | |
| 348 | /* |
| 349 | * The Windows owned by the Frame. |
| 350 | * Note: in 1.2 this has been superceded by Window.ownedWindowList |
| 351 | * |
| 352 | * @serial |
| 353 | * @see java.awt.Window#ownedWindowList |
| 354 | */ |
| 355 | Vector ownedWindows; |
| 356 | |
| 357 | private static final String base = "frame"; |
| 358 | private static int nameCounter = 0; |
| 359 | |
| 360 | /* |
| 361 | * JDK 1.1 serialVersionUID |
| 362 | */ |
| 363 | private static final long serialVersionUID = 2673458971256075116L; |
| 364 | |
| 365 | static { |
| 366 | /* ensure that the necessary native libraries are loaded */ |
| 367 | Toolkit.loadLibraries(); |
| 368 | if (!GraphicsEnvironment.isHeadless()) { |
| 369 | initIDs(); |
| 370 | } |
| 371 | } |
| 372 | |
| 373 | /** |
| 374 | * Constructs a new instance of <code>Frame</code> that is |
| 375 | * initially invisible. The title of the <code>Frame</code> |
| 376 | * is empty. |
| 377 | * @exception HeadlessException when |
| 378 | * <code>GraphicsEnvironment.isHeadless()</code> returns <code>true</code> |
| 379 | * @see java.awt.GraphicsEnvironment#isHeadless() |
| 380 | * @see Component#setSize |
| 381 | * @see Component#setVisible(boolean) |
| 382 | */ |
| 383 | public Frame() throws HeadlessException { |
| 384 | this(""); |
| 385 | } |
| 386 | |
| 387 | /** |
| 388 | * Constructs a new, initially invisible {@code Frame} with the |
| 389 | * specified {@code GraphicsConfiguration}. |
| 390 | * |
| 391 | * @param gc the <code>GraphicsConfiguration</code> |
| 392 | * of the target screen device. If <code>gc</code> |
| 393 | * is <code>null</code>, the system default |
| 394 | * <code>GraphicsConfiguration</code> is assumed. |
| 395 | * @exception IllegalArgumentException if |
| 396 | * <code>gc</code> is not from a screen device. |
| 397 | * @exception HeadlessException when |
| 398 | * <code>GraphicsEnvironment.isHeadless()</code> returns <code>true</code> |
| 399 | * @see java.awt.GraphicsEnvironment#isHeadless() |
| 400 | * @since 1.3 |
| 401 | */ |
| 402 | public Frame(GraphicsConfiguration gc) { |
| 403 | this("", gc); |
| 404 | } |
| 405 | |
| 406 | /** |
| 407 | * Constructs a new, initially invisible <code>Frame</code> object |
| 408 | * with the specified title. |
| 409 | * @param title the title to be displayed in the frame's border. |
| 410 | * A <code>null</code> value |
| 411 | * is treated as an empty string, "". |
| 412 | * @exception HeadlessException when |
| 413 | * <code>GraphicsEnvironment.isHeadless()</code> returns <code>true</code> |
| 414 | * @see java.awt.GraphicsEnvironment#isHeadless() |
| 415 | * @see java.awt.Component#setSize |
| 416 | * @see java.awt.Component#setVisible(boolean) |
| 417 | * @see java.awt.GraphicsConfiguration#getBounds |
| 418 | */ |
| 419 | public Frame(String title) throws HeadlessException { |
| 420 | init(title, null); |
| 421 | } |
| 422 | |
| 423 | /** |
| 424 | * Constructs a new, initially invisible <code>Frame</code> object |
| 425 | * with the specified title and a |
| 426 | * <code>GraphicsConfiguration</code>. |
| 427 | * @param title the title to be displayed in the frame's border. |
| 428 | * A <code>null</code> value |
| 429 | * is treated as an empty string, "". |
| 430 | * @param gc the <code>GraphicsConfiguration</code> |
| 431 | * of the target screen device. If <code>gc</code> is |
| 432 | * <code>null</code>, the system default |
| 433 | * <code>GraphicsConfiguration</code> is assumed. |
| 434 | * @exception IllegalArgumentException if <code>gc</code> |
| 435 | * is not from a screen device. |
| 436 | * @exception HeadlessException when |
| 437 | * <code>GraphicsEnvironment.isHeadless()</code> returns <code>true</code> |
| 438 | * @see java.awt.GraphicsEnvironment#isHeadless() |
| 439 | * @see java.awt.Component#setSize |
| 440 | * @see java.awt.Component#setVisible(boolean) |
| 441 | * @see java.awt.GraphicsConfiguration#getBounds |
| 442 | * @since 1.3 |
| 443 | */ |
| 444 | public Frame(String title, GraphicsConfiguration gc) { |
| 445 | super(gc); |
| 446 | init(title, gc); |
| 447 | } |
| 448 | |
| 449 | private void init(String title, GraphicsConfiguration gc) { |
| 450 | this.title = title; |
| 451 | SunToolkit.checkAndSetPolicy(this, false); |
| 452 | } |
| 453 | |
| 454 | /** |
| 455 | * Construct a name for this component. Called by getName() when the |
| 456 | * name is null. |
| 457 | */ |
| 458 | String constructComponentName() { |
| 459 | synchronized (Frame.class) { |
| 460 | return base + nameCounter++; |
| 461 | } |
| 462 | } |
| 463 | |
| 464 | /** |
| 465 | * Makes this Frame displayable by connecting it to |
| 466 | * a native screen resource. Making a frame displayable will |
| 467 | * cause any of its children to be made displayable. |
| 468 | * This method is called internally by the toolkit and should |
| 469 | * not be called directly by programs. |
| 470 | * @see Component#isDisplayable |
| 471 | * @see #removeNotify |
| 472 | */ |
| 473 | public void addNotify() { |
| 474 | synchronized (getTreeLock()) { |
| 475 | if (peer == null) { |
| 476 | peer = getToolkit().createFrame(this); |
| 477 | } |
| 478 | FramePeer p = (FramePeer)peer; |
| 479 | MenuBar menuBar = this.menuBar; |
| 480 | if (menuBar != null) { |
| 481 | mbManagement = true; |
| 482 | menuBar.addNotify(); |
| 483 | p.setMenuBar(menuBar); |
| 484 | } |
| 485 | p.setMaximizedBounds(maximizedBounds); |
| 486 | super.addNotify(); |
| 487 | } |
| 488 | } |
| 489 | |
| 490 | /** |
| 491 | * Gets the title of the frame. The title is displayed in the |
| 492 | * frame's border. |
| 493 | * @return the title of this frame, or an empty string ("") |
| 494 | * if this frame doesn't have a title. |
| 495 | * @see #setTitle(String) |
| 496 | */ |
| 497 | public String getTitle() { |
| 498 | return title; |
| 499 | } |
| 500 | |
| 501 | /** |
| 502 | * Sets the title for this frame to the specified string. |
| 503 | * @param title the title to be displayed in the frame's border. |
| 504 | * A <code>null</code> value |
| 505 | * is treated as an empty string, "". |
| 506 | * @see #getTitle |
| 507 | */ |
| 508 | public void setTitle(String title) { |
| 509 | String oldTitle = this.title; |
| 510 | if (title == null) { |
| 511 | title = ""; |
| 512 | } |
| 513 | |
| 514 | |
| 515 | synchronized(this) { |
| 516 | this.title = title; |
| 517 | FramePeer peer = (FramePeer)this.peer; |
| 518 | if (peer != null) { |
| 519 | peer.setTitle(title); |
| 520 | } |
| 521 | } |
| 522 | firePropertyChange("title", oldTitle, title); |
| 523 | } |
| 524 | |
| 525 | /** |
| 526 | * Returns the image to be displayed as the icon for this frame. |
| 527 | * <p> |
| 528 | * This method is obsolete and kept for backward compatibility |
| 529 | * only. Use {@link Window#getIconImages Window.getIconImages()} instead. |
| 530 | * <p> |
| 531 | * If a list of several images was specified as a Window's icon, |
| 532 | * this method will return the first item of the list. |
| 533 | * |
| 534 | * @return the icon image for this frame, or <code>null</code> |
| 535 | * if this frame doesn't have an icon image. |
| 536 | * @see #setIconImage(Image) |
| 537 | * @see Window#getIconImages() |
| 538 | * @see Window#setIconImages |
| 539 | */ |
| 540 | public Image getIconImage() { |
| 541 | java.util.List<Image> icons = this.icons; |
| 542 | if (icons != null) { |
| 543 | if (icons.size() > 0) { |
| 544 | return icons.get(0); |
| 545 | } |
| 546 | } |
| 547 | return null; |
| 548 | } |
| 549 | |
| 550 | /** |
| 551 | * {@inheritDoc} |
| 552 | */ |
| 553 | public void setIconImage(Image image) { |
| 554 | super.setIconImage(image); |
| 555 | } |
| 556 | |
| 557 | /** |
| 558 | * Gets the menu bar for this frame. |
| 559 | * @return the menu bar for this frame, or <code>null</code> |
| 560 | * if this frame doesn't have a menu bar. |
| 561 | * @see #setMenuBar(MenuBar) |
| 562 | */ |
| 563 | public MenuBar getMenuBar() { |
| 564 | return menuBar; |
| 565 | } |
| 566 | |
| 567 | /** |
| 568 | * Sets the menu bar for this frame to the specified menu bar. |
| 569 | * @param mb the menu bar being set. |
| 570 | * If this parameter is <code>null</code> then any |
| 571 | * existing menu bar on this frame is removed. |
| 572 | * @see #getMenuBar |
| 573 | */ |
| 574 | public void setMenuBar(MenuBar mb) { |
| 575 | synchronized (getTreeLock()) { |
| 576 | if (menuBar == mb) { |
| 577 | return; |
| 578 | } |
| 579 | if ((mb != null) && (mb.parent != null)) { |
| 580 | mb.parent.remove(mb); |
| 581 | } |
| 582 | if (menuBar != null) { |
| 583 | remove(menuBar); |
| 584 | } |
| 585 | menuBar = mb; |
| 586 | if (menuBar != null) { |
| 587 | menuBar.parent = this; |
| 588 | |
| 589 | FramePeer peer = (FramePeer)this.peer; |
| 590 | if (peer != null) { |
| 591 | mbManagement = true; |
| 592 | menuBar.addNotify(); |
| 593 | if (valid) { |
| 594 | invalidate(); |
| 595 | } |
| 596 | peer.setMenuBar(menuBar); |
| 597 | } |
| 598 | } |
| 599 | } |
| 600 | } |
| 601 | |
| 602 | /** |
| 603 | * Indicates whether this frame is resizable by the user. |
| 604 | * By default, all frames are initially resizable. |
| 605 | * @return <code>true</code> if the user can resize this frame; |
| 606 | * <code>false</code> otherwise. |
| 607 | * @see java.awt.Frame#setResizable(boolean) |
| 608 | */ |
| 609 | public boolean isResizable() { |
| 610 | return resizable; |
| 611 | } |
| 612 | |
| 613 | /** |
| 614 | * Sets whether this frame is resizable by the user. |
| 615 | * @param resizable <code>true</code> if this frame is resizable; |
| 616 | * <code>false</code> otherwise. |
| 617 | * @see java.awt.Frame#isResizable |
| 618 | */ |
| 619 | public void setResizable(boolean resizable) { |
| 620 | boolean oldResizable = this.resizable; |
| 621 | boolean testvalid = false; |
| 622 | |
| 623 | synchronized (this) { |
| 624 | this.resizable = resizable; |
| 625 | FramePeer peer = (FramePeer)this.peer; |
| 626 | if (peer != null) { |
| 627 | peer.setResizable(resizable); |
| 628 | testvalid = true; |
| 629 | } |
| 630 | } |
| 631 | |
| 632 | // On some platforms, changing the resizable state affects |
| 633 | // the insets of the Frame. If we could, we'd call invalidate() |
| 634 | // from the peer, but we need to guarantee that we're not holding |
| 635 | // the Frame lock when we call invalidate(). |
| 636 | if (testvalid && valid) { |
| 637 | invalidate(); |
| 638 | } |
| 639 | firePropertyChange("resizable", oldResizable, resizable); |
| 640 | } |
| 641 | |
| 642 | |
| 643 | /** |
| 644 | * Sets the state of this frame (obsolete). |
| 645 | * <p> |
| 646 | * In older versions of JDK a frame state could only be NORMAL or |
| 647 | * ICONIFIED. Since JDK 1.4 set of supported frame states is |
| 648 | * expanded and frame state is represented as a bitwise mask. |
| 649 | * <p> |
| 650 | * For compatibility with applications developed |
| 651 | * earlier this method still accepts |
| 652 | * {@code Frame.NORMAL} and |
| 653 | * {@code Frame.ICONIFIED} only. The iconic |
| 654 | * state of the frame is only changed, other aspects |
| 655 | * of frame state are not affected by this method. If |
| 656 | * the state passed to this method is neither {@code |
| 657 | * Frame.NORMAL} nor {@code Frame.ICONIFIED} the |
| 658 | * method performs no actions at all. |
| 659 | * <p>Note that if the state is not supported on a |
| 660 | * given platform, neither the state nor the return |
| 661 | * value of the {@link #getState} method will be |
| 662 | * changed. The application may determine whether a |
| 663 | * specific state is supported via the {@link |
| 664 | * java.awt.Toolkit#isFrameStateSupported} method. |
| 665 | * <p><b>If the frame is currently visible on the |
| 666 | * screen</b> (the {@link #isShowing} method returns |
| 667 | * {@code true}), the developer should examine the |
| 668 | * return value of the {@link |
| 669 | * java.awt.event.WindowEvent#getNewState} method of |
| 670 | * the {@code WindowEvent} received through the |
| 671 | * {@link java.awt.event.WindowStateListener} to |
| 672 | * determine that the state has actually been |
| 673 | * changed. |
| 674 | * <p><b>If the frame is not visible on the |
| 675 | * screen</b>, the events may or may not be |
| 676 | * generated. In this case the developer may assume |
| 677 | * that the state changes immediately after this |
| 678 | * method returns. Later, when the {@code |
| 679 | * setVisible(true)} method is invoked, the frame |
| 680 | * will attempt to apply this state. Receiving any |
| 681 | * {@link |
| 682 | * java.awt.event.WindowEvent#WINDOW_STATE_CHANGED} |
| 683 | * events is not guaranteed in this case also. |
| 684 | * |
| 685 | * @param state either <code>Frame.NORMAL</code> or |
| 686 | * <code>Frame.ICONIFIED</code>. |
| 687 | * @see #setExtendedState(int) |
| 688 | * @see java.awt.Window#addWindowStateListener |
| 689 | */ |
| 690 | public synchronized void setState(int state) { |
| 691 | int current = getExtendedState(); |
| 692 | if (state == ICONIFIED && (current & ICONIFIED) == 0) { |
| 693 | setExtendedState(current | ICONIFIED); |
| 694 | } |
| 695 | else if (state == NORMAL && (current & ICONIFIED) != 0) { |
| 696 | setExtendedState(current & ~ICONIFIED); |
| 697 | } |
| 698 | } |
| 699 | |
| 700 | /** |
| 701 | * Sets the state of this frame. The state is |
| 702 | * represented as a bitwise mask. |
| 703 | * <ul> |
| 704 | * <li><code>NORMAL</code> |
| 705 | * <br>Indicates that no state bits are set. |
| 706 | * <li><code>ICONIFIED</code> |
| 707 | * <li><code>MAXIMIZED_HORIZ</code> |
| 708 | * <li><code>MAXIMIZED_VERT</code> |
| 709 | * <li><code>MAXIMIZED_BOTH</code> |
| 710 | * <br>Concatenates <code>MAXIMIZED_HORIZ</code> |
| 711 | * and <code>MAXIMIZED_VERT</code>. |
| 712 | * </ul> |
| 713 | * <p>Note that if the state is not supported on a |
| 714 | * given platform, neither the state nor the return |
| 715 | * value of the {@link #getExtendedState} method will |
| 716 | * be changed. The application may determine whether |
| 717 | * a specific state is supported via the {@link |
| 718 | * java.awt.Toolkit#isFrameStateSupported} method. |
| 719 | * <p><b>If the frame is currently visible on the |
| 720 | * screen</b> (the {@link #isShowing} method returns |
| 721 | * {@code true}), the developer should examine the |
| 722 | * return value of the {@link |
| 723 | * java.awt.event.WindowEvent#getNewState} method of |
| 724 | * the {@code WindowEvent} received through the |
| 725 | * {@link java.awt.event.WindowStateListener} to |
| 726 | * determine that the state has actually been |
| 727 | * changed. |
| 728 | * <p><b>If the frame is not visible on the |
| 729 | * screen</b>, the events may or may not be |
| 730 | * generated. In this case the developer may assume |
| 731 | * that the state changes immediately after this |
| 732 | * method returns. Later, when the {@code |
| 733 | * setVisible(true)} method is invoked, the frame |
| 734 | * will attempt to apply this state. Receiving any |
| 735 | * {@link |
| 736 | * java.awt.event.WindowEvent#WINDOW_STATE_CHANGED} |
| 737 | * events is not guaranteed in this case also. |
| 738 | * |
| 739 | * @param state a bitwise mask of frame state constants |
| 740 | * @since 1.4 |
| 741 | * @see java.awt.Window#addWindowStateListener |
| 742 | */ |
| 743 | public synchronized void setExtendedState(int state) { |
| 744 | if ( !isFrameStateSupported( state ) ) { |
| 745 | return; |
| 746 | } |
| 747 | this.state = state; |
| 748 | FramePeer peer = (FramePeer)this.peer; |
| 749 | if (peer != null) { |
| 750 | peer.setState(state); |
| 751 | } |
| 752 | } |
| 753 | private boolean isFrameStateSupported(int state) { |
| 754 | if( !getToolkit().isFrameStateSupported( state ) ) { |
| 755 | // * Toolkit.isFrameStateSupported returns always false |
| 756 | // on compound state even if all parts are supported; |
| 757 | // * if part of state is not supported, state is not supported; |
| 758 | // * MAXIMIZED_BOTH is not a compound state. |
| 759 | if( ((state & ICONIFIED) != 0) && |
| 760 | !getToolkit().isFrameStateSupported( ICONIFIED )) { |
| 761 | return false; |
| 762 | }else { |
| 763 | state &= ~ICONIFIED; |
| 764 | } |
| 765 | return getToolkit().isFrameStateSupported( state ); |
| 766 | } |
| 767 | return true; |
| 768 | } |
| 769 | |
| 770 | /** |
| 771 | * Gets the state of this frame (obsolete). |
| 772 | * <p> |
| 773 | * In older versions of JDK a frame state could only be NORMAL or |
| 774 | * ICONIFIED. Since JDK 1.4 set of supported frame states is |
| 775 | * expanded and frame state is represented as a bitwise mask. |
| 776 | * <p> |
| 777 | * For compatibility with old programs this method still returns |
| 778 | * <code>Frame.NORMAL</code> and <code>Frame.ICONIFIED</code> but |
| 779 | * it only reports the iconic state of the frame, other aspects of |
| 780 | * frame state are not reported by this method. |
| 781 | * |
| 782 | * @return <code>Frame.NORMAL</code> or <code>Frame.ICONIFIED</code>. |
| 783 | * @see #setState(int) |
| 784 | * @see #getExtendedState |
| 785 | */ |
| 786 | public synchronized int getState() { |
| 787 | return (getExtendedState() & ICONIFIED) != 0 ? ICONIFIED : NORMAL; |
| 788 | } |
| 789 | |
| 790 | |
| 791 | /** |
| 792 | * Gets the state of this frame. The state is |
| 793 | * represented as a bitwise mask. |
| 794 | * <ul> |
| 795 | * <li><code>NORMAL</code> |
| 796 | * <br>Indicates that no state bits are set. |
| 797 | * <li><code>ICONIFIED</code> |
| 798 | * <li><code>MAXIMIZED_HORIZ</code> |
| 799 | * <li><code>MAXIMIZED_VERT</code> |
| 800 | * <li><code>MAXIMIZED_BOTH</code> |
| 801 | * <br>Concatenates <code>MAXIMIZED_HORIZ</code> |
| 802 | * and <code>MAXIMIZED_VERT</code>. |
| 803 | * </ul> |
| 804 | * |
| 805 | * @return a bitwise mask of frame state constants |
| 806 | * @see #setExtendedState(int) |
| 807 | * @since 1.4 |
| 808 | */ |
| 809 | public synchronized int getExtendedState() { |
| 810 | FramePeer peer = (FramePeer)this.peer; |
| 811 | if (peer != null) { |
| 812 | state = peer.getState(); |
| 813 | } |
| 814 | return state; |
| 815 | } |
| 816 | |
| 817 | /** |
| 818 | * Sets the maximized bounds for this frame. |
| 819 | * <p> |
| 820 | * When a frame is in maximized state the system supplies some |
| 821 | * defaults bounds. This method allows some or all of those |
| 822 | * system supplied values to be overridden. |
| 823 | * <p> |
| 824 | * If <code>bounds</code> is <code>null</code>, accept bounds |
| 825 | * supplied by the system. If non-<code>null</code> you can |
| 826 | * override some of the system supplied values while accepting |
| 827 | * others by setting those fields you want to accept from system |
| 828 | * to <code>Integer.MAX_VALUE</code>. |
| 829 | * <p> |
| 830 | * On some systems only the size portion of the bounds is taken |
| 831 | * into account. |
| 832 | * |
| 833 | * @param bounds bounds for the maximized state |
| 834 | * @see #getMaximizedBounds() |
| 835 | * @since 1.4 |
| 836 | */ |
| 837 | public synchronized void setMaximizedBounds(Rectangle bounds) { |
| 838 | this.maximizedBounds = bounds; |
| 839 | FramePeer peer = (FramePeer)this.peer; |
| 840 | if (peer != null) { |
| 841 | peer.setMaximizedBounds(bounds); |
| 842 | } |
| 843 | } |
| 844 | |
| 845 | /** |
| 846 | * Gets maximized bounds for this frame. |
| 847 | * Some fields may contain <code>Integer.MAX_VALUE</code> to indicate |
| 848 | * that system supplied values for this field must be used. |
| 849 | * |
| 850 | * @return maximized bounds for this frame; may be <code>null</code> |
| 851 | * @see #setMaximizedBounds(Rectangle) |
| 852 | * @since 1.4 |
| 853 | */ |
| 854 | public Rectangle getMaximizedBounds() { |
| 855 | return maximizedBounds; |
| 856 | } |
| 857 | |
| 858 | |
| 859 | /** |
| 860 | * Disables or enables decorations for this frame. |
| 861 | * This method can only be called while the frame is not displayable. |
| 862 | * @param undecorated <code>true</code> if no frame decorations are |
| 863 | * to be enabled; |
| 864 | * <code>false</code> if frame decorations are to be enabled. |
| 865 | * @throws <code>IllegalComponentStateException</code> if the frame |
| 866 | * is displayable. |
| 867 | * @see #isUndecorated |
| 868 | * @see Component#isDisplayable |
| 869 | * @see javax.swing.JFrame#setDefaultLookAndFeelDecorated(boolean) |
| 870 | * @since 1.4 |
| 871 | */ |
| 872 | public void setUndecorated(boolean undecorated) { |
| 873 | /* Make sure we don't run in the middle of peer creation.*/ |
| 874 | synchronized (getTreeLock()) { |
| 875 | if (isDisplayable()) { |
| 876 | throw new IllegalComponentStateException("The frame is displayable."); |
| 877 | } |
| 878 | this.undecorated = undecorated; |
| 879 | } |
| 880 | } |
| 881 | |
| 882 | /** |
| 883 | * Indicates whether this frame is undecorated. |
| 884 | * By default, all frames are initially decorated. |
| 885 | * @return <code>true</code> if frame is undecorated; |
| 886 | * <code>false</code> otherwise. |
| 887 | * @see java.awt.Frame#setUndecorated(boolean) |
| 888 | * @since 1.4 |
| 889 | */ |
| 890 | public boolean isUndecorated() { |
| 891 | return undecorated; |
| 892 | } |
| 893 | |
| 894 | /** |
| 895 | * Removes the specified menu bar from this frame. |
| 896 | * @param m the menu component to remove. |
| 897 | * If <code>m</code> is <code>null</code>, then |
| 898 | * no action is taken |
| 899 | */ |
| 900 | public void remove(MenuComponent m) { |
| 901 | if (m == null) { |
| 902 | return; |
| 903 | } |
| 904 | synchronized (getTreeLock()) { |
| 905 | if (m == menuBar) { |
| 906 | menuBar = null; |
| 907 | FramePeer peer = (FramePeer)this.peer; |
| 908 | if (peer != null) { |
| 909 | mbManagement = true; |
| 910 | if (valid) { |
| 911 | invalidate(); |
| 912 | } |
| 913 | peer.setMenuBar(null); |
| 914 | m.removeNotify(); |
| 915 | } |
| 916 | m.parent = null; |
| 917 | } else { |
| 918 | super.remove(m); |
| 919 | } |
| 920 | } |
| 921 | } |
| 922 | |
| 923 | /** |
| 924 | * Makes this Frame undisplayable by removing its connection |
| 925 | * to its native screen resource. Making a Frame undisplayable |
| 926 | * will cause any of its children to be made undisplayable. |
| 927 | * This method is called by the toolkit internally and should |
| 928 | * not be called directly by programs. |
| 929 | * @see Component#isDisplayable |
| 930 | * @see #addNotify |
| 931 | */ |
| 932 | public void removeNotify() { |
| 933 | synchronized (getTreeLock()) { |
| 934 | FramePeer peer = (FramePeer)this.peer; |
| 935 | if (peer != null) { |
| 936 | // get the latest Frame state before disposing |
| 937 | getState(); |
| 938 | |
| 939 | if (menuBar != null) { |
| 940 | mbManagement = true; |
| 941 | peer.setMenuBar(null); |
| 942 | menuBar.removeNotify(); |
| 943 | } |
| 944 | } |
| 945 | super.removeNotify(); |
| 946 | } |
| 947 | } |
| 948 | |
| 949 | void postProcessKeyEvent(KeyEvent e) { |
| 950 | if (menuBar != null && menuBar.handleShortcut(e)) { |
| 951 | e.consume(); |
| 952 | return; |
| 953 | } |
| 954 | super.postProcessKeyEvent(e); |
| 955 | } |
| 956 | |
| 957 | /** |
| 958 | * Returns a string representing the state of this <code>Frame</code>. |
| 959 | * This method is intended to be used only for debugging purposes, and the |
| 960 | * content and format of the returned string may vary between |
| 961 | * implementations. The returned string may be empty but may not be |
| 962 | * <code>null</code>. |
| 963 | * |
| 964 | * @return the parameter string of this frame |
| 965 | */ |
| 966 | protected String paramString() { |
| 967 | String str = super.paramString(); |
| 968 | if (title != null) { |
| 969 | str += ",title=" + title; |
| 970 | } |
| 971 | if (resizable) { |
| 972 | str += ",resizable"; |
| 973 | } |
| 974 | getExtendedState(); // sync with peer |
| 975 | if (state == NORMAL) { |
| 976 | str += ",normal"; |
| 977 | } |
| 978 | else { |
| 979 | if ((state & ICONIFIED) != 0) { |
| 980 | str += ",iconified"; |
| 981 | } |
| 982 | if ((state & MAXIMIZED_BOTH) == MAXIMIZED_BOTH) { |
| 983 | str += ",maximized"; |
| 984 | } |
| 985 | else if ((state & MAXIMIZED_HORIZ) != 0) { |
| 986 | str += ",maximized_horiz"; |
| 987 | } |
| 988 | else if ((state & MAXIMIZED_VERT) != 0) { |
| 989 | str += ",maximized_vert"; |
| 990 | } |
| 991 | } |
| 992 | return str; |
| 993 | } |
| 994 | |
| 995 | /** |
| 996 | * @deprecated As of JDK version 1.1, |
| 997 | * replaced by <code>Component.setCursor(Cursor)</code>. |
| 998 | */ |
| 999 | @Deprecated |
| 1000 | public void setCursor(int cursorType) { |
| 1001 | if (cursorType < DEFAULT_CURSOR || cursorType > MOVE_CURSOR) { |
| 1002 | throw new IllegalArgumentException("illegal cursor type"); |
| 1003 | } |
| 1004 | setCursor(Cursor.getPredefinedCursor(cursorType)); |
| 1005 | } |
| 1006 | |
| 1007 | /** |
| 1008 | * @deprecated As of JDK version 1.1, |
| 1009 | * replaced by <code>Component.getCursor()</code>. |
| 1010 | */ |
| 1011 | @Deprecated |
| 1012 | public int getCursorType() { |
| 1013 | return (getCursor().getType()); |
| 1014 | } |
| 1015 | |
| 1016 | /** |
| 1017 | * Returns an array of all {@code Frame}s created by this application. |
| 1018 | * If called from an applet, the array includes only the {@code Frame}s |
| 1019 | * accessible by that applet. |
| 1020 | * <p> |
| 1021 | * <b>Warning:</b> this method may return system created frames, such |
| 1022 | * as a shared, hidden frame which is used by Swing. Applications |
| 1023 | * should not assume the existence of these frames, nor should an |
| 1024 | * application assume anything about these frames such as component |
| 1025 | * positions, <code>LayoutManager</code>s or serialization. |
| 1026 | * <p> |
| 1027 | * <b>Note</b>: To obtain a list of all ownerless windows, including |
| 1028 | * ownerless {@code Dialog}s (introduced in release 1.6), use {@link |
| 1029 | * Window#getOwnerlessWindows Window.getOwnerlessWindows}. |
| 1030 | * |
| 1031 | * @see Window#getWindows() |
| 1032 | * @see Window#getOwnerlessWindows |
| 1033 | * |
| 1034 | * @since 1.2 |
| 1035 | */ |
| 1036 | public static Frame[] getFrames() { |
| 1037 | Window[] allWindows = Window.getWindows(); |
| 1038 | |
| 1039 | int frameCount = 0; |
| 1040 | for (Window w : allWindows) { |
| 1041 | if (w instanceof Frame) { |
| 1042 | frameCount++; |
| 1043 | } |
| 1044 | } |
| 1045 | |
| 1046 | Frame[] frames = new Frame[frameCount]; |
| 1047 | int c = 0; |
| 1048 | for (Window w : allWindows) { |
| 1049 | if (w instanceof Frame) { |
| 1050 | frames[c++] = (Frame)w; |
| 1051 | } |
| 1052 | } |
| 1053 | |
| 1054 | return frames; |
| 1055 | } |
| 1056 | |
| 1057 | /* Serialization support. If there's a MenuBar we restore |
| 1058 | * its (transient) parent field here. Likewise for top level |
| 1059 | * windows that are "owned" by this frame. |
| 1060 | */ |
| 1061 | |
| 1062 | /** |
| 1063 | * <code>Frame</code>'s Serialized Data Version. |
| 1064 | * |
| 1065 | * @serial |
| 1066 | */ |
| 1067 | private int frameSerializedDataVersion = 1; |
| 1068 | |
| 1069 | /** |
| 1070 | * Writes default serializable fields to stream. Writes |
| 1071 | * an optional serializable icon <code>Image</code>, which is |
| 1072 | * available as of 1.4. |
| 1073 | * |
| 1074 | * @param s the <code>ObjectOutputStream</code> to write |
| 1075 | * @serialData an optional icon <code>Image</code> |
| 1076 | * @see java.awt.Image |
| 1077 | * @see #getIconImage |
| 1078 | * @see #setIconImage(Image) |
| 1079 | * @see #readObject(ObjectInputStream) |
| 1080 | */ |
| 1081 | private void writeObject(ObjectOutputStream s) |
| 1082 | throws IOException |
| 1083 | { |
| 1084 | s.defaultWriteObject(); |
| 1085 | if (icons != null && icons.size() > 0) { |
| 1086 | Image icon1 = icons.get(0); |
| 1087 | if (icon1 instanceof Serializable) { |
| 1088 | s.writeObject(icon1); |
| 1089 | return; |
| 1090 | } |
| 1091 | } |
| 1092 | s.writeObject(null); |
| 1093 | } |
| 1094 | |
| 1095 | /** |
| 1096 | * Reads the <code>ObjectInputStream</code>. Tries |
| 1097 | * to read an icon <code>Image</code>, which is optional |
| 1098 | * data available as of 1.4. If an icon <code>Image</code> |
| 1099 | * is not available, but anything other than an EOF |
| 1100 | * is detected, an <code>OptionalDataException</code> |
| 1101 | * will be thrown. |
| 1102 | * Unrecognized keys or values will be ignored. |
| 1103 | * |
| 1104 | * @param s the <code>ObjectInputStream</code> to read |
| 1105 | * @exception java.io.OptionalDataException if an icon <code>Image</code> |
| 1106 | * is not available, but anything other than an EOF |
| 1107 | * is detected |
| 1108 | * @exception HeadlessException if |
| 1109 | * <code>GraphicsEnvironment.isHeadless</code> returns |
| 1110 | * <code>true</code> |
| 1111 | * @see java.awt.GraphicsEnvironment#isHeadless() |
| 1112 | * @see java.awt.Image |
| 1113 | * @see #getIconImage |
| 1114 | * @see #setIconImage(Image) |
| 1115 | * @see #writeObject(ObjectOutputStream) |
| 1116 | */ |
| 1117 | private void readObject(ObjectInputStream s) |
| 1118 | throws ClassNotFoundException, IOException, HeadlessException |
| 1119 | { |
| 1120 | // HeadlessException is thrown by Window's readObject |
| 1121 | s.defaultReadObject(); |
| 1122 | try { |
| 1123 | Image icon = (Image) s.readObject(); |
| 1124 | if (icons == null) { |
| 1125 | icons = new ArrayList<Image>(); |
| 1126 | icons.add(icon); |
| 1127 | } |
| 1128 | } catch (java.io.OptionalDataException e) { |
| 1129 | // pre-1.4 instances will not have this optional data. |
| 1130 | // 1.6 and later instances serialize icons in the Window class |
| 1131 | // e.eof will be true to indicate that there is no more |
| 1132 | // data available for this object. |
| 1133 | |
| 1134 | // If e.eof is not true, throw the exception as it |
| 1135 | // might have been caused by unrelated reasons. |
| 1136 | if (!e.eof) { |
| 1137 | throw (e); |
| 1138 | } |
| 1139 | } |
| 1140 | |
| 1141 | if (menuBar != null) |
| 1142 | menuBar.parent = this; |
| 1143 | |
| 1144 | // Ensure 1.1 serialized Frames can read & hook-up |
| 1145 | // owned windows properly |
| 1146 | // |
| 1147 | if (ownedWindows != null) { |
| 1148 | for (int i = 0; i < ownedWindows.size(); i++) { |
| 1149 | connectOwnedWindow((Window) ownedWindows.elementAt(i)); |
| 1150 | } |
| 1151 | ownedWindows = null; |
| 1152 | } |
| 1153 | } |
| 1154 | |
| 1155 | /** |
| 1156 | * Initialize JNI field and method IDs |
| 1157 | */ |
| 1158 | private static native void initIDs(); |
| 1159 | |
| 1160 | /* |
| 1161 | * --- Accessibility Support --- |
| 1162 | * |
| 1163 | */ |
| 1164 | |
| 1165 | /** |
| 1166 | * Gets the AccessibleContext associated with this Frame. |
| 1167 | * For frames, the AccessibleContext takes the form of an |
| 1168 | * AccessibleAWTFrame. |
| 1169 | * A new AccessibleAWTFrame instance is created if necessary. |
| 1170 | * |
| 1171 | * @return an AccessibleAWTFrame that serves as the |
| 1172 | * AccessibleContext of this Frame |
| 1173 | * @since 1.3 |
| 1174 | */ |
| 1175 | public AccessibleContext getAccessibleContext() { |
| 1176 | if (accessibleContext == null) { |
| 1177 | accessibleContext = new AccessibleAWTFrame(); |
| 1178 | } |
| 1179 | return accessibleContext; |
| 1180 | } |
| 1181 | |
| 1182 | /** |
| 1183 | * This class implements accessibility support for the |
| 1184 | * <code>Frame</code> class. It provides an implementation of the |
| 1185 | * Java Accessibility API appropriate to frame user-interface elements. |
| 1186 | * @since 1.3 |
| 1187 | */ |
| 1188 | protected class AccessibleAWTFrame extends AccessibleAWTWindow |
| 1189 | { |
| 1190 | /* |
| 1191 | * JDK 1.3 serialVersionUID |
| 1192 | */ |
| 1193 | private static final long serialVersionUID = -6172960752956030250L; |
| 1194 | |
| 1195 | /** |
| 1196 | * Get the role of this object. |
| 1197 | * |
| 1198 | * @return an instance of AccessibleRole describing the role of the |
| 1199 | * object |
| 1200 | * @see AccessibleRole |
| 1201 | */ |
| 1202 | public AccessibleRole getAccessibleRole() { |
| 1203 | return AccessibleRole.FRAME; |
| 1204 | } |
| 1205 | |
| 1206 | /** |
| 1207 | * Get the state of this object. |
| 1208 | * |
| 1209 | * @return an instance of AccessibleStateSet containing the current |
| 1210 | * state set of the object |
| 1211 | * @see AccessibleState |
| 1212 | */ |
| 1213 | public AccessibleStateSet getAccessibleStateSet() { |
| 1214 | AccessibleStateSet states = super.getAccessibleStateSet(); |
| 1215 | if (getFocusOwner() != null) { |
| 1216 | states.add(AccessibleState.ACTIVE); |
| 1217 | } |
| 1218 | if (isResizable()) { |
| 1219 | states.add(AccessibleState.RESIZABLE); |
| 1220 | } |
| 1221 | return states; |
| 1222 | } |
| 1223 | |
| 1224 | |
| 1225 | } // inner class AccessibleAWTFrame |
| 1226 | |
| 1227 | } |