J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 1997-2006 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 javax.swing; |
| 26 | |
| 27 | import java.awt.*; |
| 28 | import java.awt.event.*; |
| 29 | import java.beans.PropertyChangeListener; |
| 30 | import java.util.Locale; |
| 31 | import java.util.Vector; |
| 32 | import java.io.Serializable; |
| 33 | |
| 34 | import javax.accessibility.*; |
| 35 | |
| 36 | |
| 37 | /** |
| 38 | * An extended version of <code>java.awt.Frame</code> that adds support for |
| 39 | * the JFC/Swing component architecture. |
| 40 | * You can find task-oriented documentation about using <code>JFrame</code> |
| 41 | * in <em>The Java Tutorial</em>, in the section |
| 42 | * <a |
| 43 | href="http://java.sun.com/docs/books/tutorial/uiswing/components/frame.html">How to Make Frames</a>. |
| 44 | * |
| 45 | * <p> |
| 46 | * The <code>JFrame</code> class is slightly incompatible with <code>Frame</code>. |
| 47 | * Like all other JFC/Swing top-level containers, |
| 48 | * a <code>JFrame</code> contains a <code>JRootPane</code> as its only child. |
| 49 | * The <b>content pane</b> provided by the root pane should, |
| 50 | * as a rule, contain |
| 51 | * all the non-menu components displayed by the <code>JFrame</code>. |
| 52 | * This is different from the AWT <code>Frame</code> case. |
| 53 | * As a conveniance <code>add</code> and its variants, <code>remove</code> and |
| 54 | * <code>setLayout</code> have been overridden to forward to the |
| 55 | * <code>contentPane</code> as necessary. This means you can write: |
| 56 | * <pre> |
| 57 | * frame.add(child); |
| 58 | * </pre> |
| 59 | * And the child will be added to the contentPane. |
| 60 | * The content pane will |
| 61 | * always be non-null. Attempting to set it to null will cause the JFrame |
| 62 | * to throw an exception. The default content pane will have a BorderLayout |
| 63 | * manager set on it. |
| 64 | * Refer to {@link javax.swing.RootPaneContainer} |
| 65 | * for details on adding, removing and setting the <code>LayoutManager</code> |
| 66 | * of a <code>JFrame</code>. |
| 67 | * <p> |
| 68 | * Unlike a <code>Frame</code>, a <code>JFrame</code> has some notion of how to |
| 69 | * respond when the user attempts to close the window. The default behavior |
| 70 | * is to simply hide the JFrame when the user closes the window. To change the |
| 71 | * default behavior, you invoke the method |
| 72 | * {@link #setDefaultCloseOperation}. |
| 73 | * To make the <code>JFrame</code> behave the same as a <code>Frame</code> |
| 74 | * instance, use |
| 75 | * <code>setDefaultCloseOperation(WindowConstants.DO_NOTHING_ON_CLOSE)</code>. |
| 76 | * <p> |
| 77 | * For more information on content panes |
| 78 | * and other features that root panes provide, |
| 79 | * see <a |
| 80 | href="http://java.sun.com/docs/books/tutorial/uiswing/components/toplevel.html">Using Top-Level Containers</a> in <em>The Java Tutorial</em>. |
| 81 | * <p> |
| 82 | * In a multi-screen environment, you can create a <code>JFrame</code> |
| 83 | * on a different screen device. See {@link java.awt.Frame} for more |
| 84 | * information. |
| 85 | * <p> |
| 86 | * <strong>Warning:</strong> Swing is not thread safe. For more |
| 87 | * information see <a |
| 88 | * href="package-summary.html#threading">Swing's Threading |
| 89 | * Policy</a>. |
| 90 | * <p> |
| 91 | * <strong>Warning:</strong> |
| 92 | * Serialized objects of this class will not be compatible with |
| 93 | * future Swing releases. The current serialization support is |
| 94 | * appropriate for short term storage or RMI between applications running |
| 95 | * the same version of Swing. As of 1.4, support for long term storage |
| 96 | * of all JavaBeans<sup><font size="-2">TM</font></sup> |
| 97 | * has been added to the <code>java.beans</code> package. |
| 98 | * Please see {@link java.beans.XMLEncoder}. |
| 99 | * |
| 100 | * @see JRootPane |
| 101 | * @see #setDefaultCloseOperation |
| 102 | * @see java.awt.event.WindowListener#windowClosing |
| 103 | * @see javax.swing.RootPaneContainer |
| 104 | * |
| 105 | * @beaninfo |
| 106 | * attribute: isContainer true |
| 107 | * attribute: containerDelegate getContentPane |
| 108 | * description: A toplevel window which can be minimized to an icon. |
| 109 | * |
| 110 | * @author Jeff Dinkins |
| 111 | * @author Georges Saab |
| 112 | * @author David Kloba |
| 113 | */ |
| 114 | public class JFrame extends Frame implements WindowConstants, |
| 115 | Accessible, |
| 116 | RootPaneContainer, |
| 117 | TransferHandler.HasGetTransferHandler |
| 118 | { |
| 119 | /** |
| 120 | * The exit application default window close operation. If a window |
| 121 | * has this set as the close operation and is closed in an applet, |
| 122 | * a <code>SecurityException</code> may be thrown. |
| 123 | * It is recommended you only use this in an application. |
| 124 | * <p> |
| 125 | * @since 1.3 |
| 126 | */ |
| 127 | public static final int EXIT_ON_CLOSE = 3; |
| 128 | |
| 129 | /** |
| 130 | * Key into the AppContext, used to check if should provide decorations |
| 131 | * by default. |
| 132 | */ |
| 133 | private static final Object defaultLookAndFeelDecoratedKey = |
| 134 | new StringBuffer("JFrame.defaultLookAndFeelDecorated"); |
| 135 | |
| 136 | private int defaultCloseOperation = HIDE_ON_CLOSE; |
| 137 | |
| 138 | /** |
| 139 | * The <code>TransferHandler</code> for this frame. |
| 140 | */ |
| 141 | private TransferHandler transferHandler; |
| 142 | |
| 143 | /** |
| 144 | * The <code>JRootPane</code> instance that manages the |
| 145 | * <code>contentPane</code> |
| 146 | * and optional <code>menuBar</code> for this frame, as well as the |
| 147 | * <code>glassPane</code>. |
| 148 | * |
| 149 | * @see JRootPane |
| 150 | * @see RootPaneContainer |
| 151 | */ |
| 152 | protected JRootPane rootPane; |
| 153 | |
| 154 | /** |
| 155 | * If true then calls to <code>add</code> and <code>setLayout</code> |
| 156 | * will be forwarded to the <code>contentPane</code>. This is initially |
| 157 | * false, but is set to true when the <code>JFrame</code> is constructed. |
| 158 | * |
| 159 | * @see #isRootPaneCheckingEnabled |
| 160 | * @see #setRootPaneCheckingEnabled |
| 161 | * @see javax.swing.RootPaneContainer |
| 162 | */ |
| 163 | protected boolean rootPaneCheckingEnabled = false; |
| 164 | |
| 165 | |
| 166 | /** |
| 167 | * Constructs a new frame that is initially invisible. |
| 168 | * <p> |
| 169 | * This constructor sets the component's locale property to the value |
| 170 | * returned by <code>JComponent.getDefaultLocale</code>. |
| 171 | * |
| 172 | * @exception HeadlessException if GraphicsEnvironment.isHeadless() |
| 173 | * returns true. |
| 174 | * @see java.awt.GraphicsEnvironment#isHeadless |
| 175 | * @see Component#setSize |
| 176 | * @see Component#setVisible |
| 177 | * @see JComponent#getDefaultLocale |
| 178 | */ |
| 179 | public JFrame() throws HeadlessException { |
| 180 | super(); |
| 181 | frameInit(); |
| 182 | } |
| 183 | |
| 184 | /** |
| 185 | * Creates a <code>Frame</code> in the specified |
| 186 | * <code>GraphicsConfiguration</code> of |
| 187 | * a screen device and a blank title. |
| 188 | * <p> |
| 189 | * This constructor sets the component's locale property to the value |
| 190 | * returned by <code>JComponent.getDefaultLocale</code>. |
| 191 | * |
| 192 | * @param gc the <code>GraphicsConfiguration</code> that is used |
| 193 | * to construct the new <code>Frame</code>; |
| 194 | * if <code>gc</code> is <code>null</code>, the system |
| 195 | * default <code>GraphicsConfiguration</code> is assumed |
| 196 | * @exception IllegalArgumentException if <code>gc</code> is not from |
| 197 | * a screen device. This exception is always thrown when |
| 198 | * GraphicsEnvironment.isHeadless() returns true. |
| 199 | * @see java.awt.GraphicsEnvironment#isHeadless |
| 200 | * @see JComponent#getDefaultLocale |
| 201 | * @since 1.3 |
| 202 | */ |
| 203 | public JFrame(GraphicsConfiguration gc) { |
| 204 | super(gc); |
| 205 | frameInit(); |
| 206 | } |
| 207 | |
| 208 | /** |
| 209 | * Creates a new, initially invisible <code>Frame</code> with the |
| 210 | * specified title. |
| 211 | * <p> |
| 212 | * This constructor sets the component's locale property to the value |
| 213 | * returned by <code>JComponent.getDefaultLocale</code>. |
| 214 | * |
| 215 | * @param title the title for the frame |
| 216 | * @exception HeadlessException if GraphicsEnvironment.isHeadless() |
| 217 | * returns true. |
| 218 | * @see java.awt.GraphicsEnvironment#isHeadless |
| 219 | * @see Component#setSize |
| 220 | * @see Component#setVisible |
| 221 | * @see JComponent#getDefaultLocale |
| 222 | */ |
| 223 | public JFrame(String title) throws HeadlessException { |
| 224 | super(title); |
| 225 | frameInit(); |
| 226 | } |
| 227 | |
| 228 | /** |
| 229 | * Creates a <code>JFrame</code> with the specified title and the |
| 230 | * specified <code>GraphicsConfiguration</code> of a screen device. |
| 231 | * <p> |
| 232 | * This constructor sets the component's locale property to the value |
| 233 | * returned by <code>JComponent.getDefaultLocale</code>. |
| 234 | * |
| 235 | * @param title the title to be displayed in the |
| 236 | * frame's border. A <code>null</code> value is treated as |
| 237 | * an empty string, "". |
| 238 | * @param gc the <code>GraphicsConfiguration</code> that is used |
| 239 | * to construct the new <code>JFrame</code> with; |
| 240 | * if <code>gc</code> is <code>null</code>, the system |
| 241 | * default <code>GraphicsConfiguration</code> is assumed |
| 242 | * @exception IllegalArgumentException if <code>gc</code> is not from |
| 243 | * a screen device. This exception is always thrown when |
| 244 | * GraphicsEnvironment.isHeadless() returns true. |
| 245 | * @see java.awt.GraphicsEnvironment#isHeadless |
| 246 | * @see JComponent#getDefaultLocale |
| 247 | * @since 1.3 |
| 248 | */ |
| 249 | public JFrame(String title, GraphicsConfiguration gc) { |
| 250 | super(title, gc); |
| 251 | frameInit(); |
| 252 | } |
| 253 | |
| 254 | /** Called by the constructors to init the <code>JFrame</code> properly. */ |
| 255 | protected void frameInit() { |
| 256 | enableEvents(AWTEvent.KEY_EVENT_MASK | AWTEvent.WINDOW_EVENT_MASK); |
| 257 | setLocale( JComponent.getDefaultLocale() ); |
| 258 | setRootPane(createRootPane()); |
| 259 | setBackground(UIManager.getColor("control")); |
| 260 | setRootPaneCheckingEnabled(true); |
| 261 | if (JFrame.isDefaultLookAndFeelDecorated()) { |
| 262 | boolean supportsWindowDecorations = |
| 263 | UIManager.getLookAndFeel().getSupportsWindowDecorations(); |
| 264 | if (supportsWindowDecorations) { |
| 265 | setUndecorated(true); |
| 266 | getRootPane().setWindowDecorationStyle(JRootPane.FRAME); |
| 267 | } |
| 268 | } |
| 269 | sun.awt.SunToolkit.checkAndSetPolicy(this, true); |
| 270 | } |
| 271 | |
| 272 | /** |
| 273 | * Called by the constructor methods to create the default |
| 274 | * <code>rootPane</code>. |
| 275 | */ |
| 276 | protected JRootPane createRootPane() { |
| 277 | JRootPane rp = new JRootPane(); |
| 278 | // NOTE: this uses setOpaque vs LookAndFeel.installProperty as there |
| 279 | // is NO reason for the RootPane not to be opaque. For painting to |
| 280 | // work the contentPane must be opaque, therefor the RootPane can |
| 281 | // also be opaque. |
| 282 | rp.setOpaque(true); |
| 283 | return rp; |
| 284 | } |
| 285 | |
| 286 | /** |
| 287 | * Processes window events occurring on this component. |
| 288 | * Hides the window or disposes of it, as specified by the setting |
| 289 | * of the <code>defaultCloseOperation</code> property. |
| 290 | * |
| 291 | * @param e the window event |
| 292 | * @see #setDefaultCloseOperation |
| 293 | * @see java.awt.Window#processWindowEvent |
| 294 | */ |
| 295 | protected void processWindowEvent(WindowEvent e) { |
| 296 | super.processWindowEvent(e); |
| 297 | |
| 298 | if (e.getID() == WindowEvent.WINDOW_CLOSING) { |
| 299 | switch(defaultCloseOperation) { |
| 300 | case HIDE_ON_CLOSE: |
| 301 | setVisible(false); |
| 302 | break; |
| 303 | case DISPOSE_ON_CLOSE: |
| 304 | dispose(); |
| 305 | break; |
| 306 | case DO_NOTHING_ON_CLOSE: |
| 307 | default: |
| 308 | break; |
| 309 | case EXIT_ON_CLOSE: |
| 310 | // This needs to match the checkExit call in |
| 311 | // setDefaultCloseOperation |
| 312 | System.exit(0); |
| 313 | break; |
| 314 | } |
| 315 | } |
| 316 | } |
| 317 | |
| 318 | // public void setMenuBar(MenuBar menu) { |
| 319 | // throw new IllegalComponentStateException("Please use setJMenuBar() with JFrame."); |
| 320 | // } |
| 321 | |
| 322 | /** |
| 323 | * Sets the operation that will happen by default when |
| 324 | * the user initiates a "close" on this frame. |
| 325 | * You must specify one of the following choices: |
| 326 | * <p> |
| 327 | * <ul> |
| 328 | * <li><code>DO_NOTHING_ON_CLOSE</code> |
| 329 | * (defined in <code>WindowConstants</code>): |
| 330 | * Don't do anything; require the |
| 331 | * program to handle the operation in the <code>windowClosing</code> |
| 332 | * method of a registered <code>WindowListener</code> object. |
| 333 | * |
| 334 | * <li><code>HIDE_ON_CLOSE</code> |
| 335 | * (defined in <code>WindowConstants</code>): |
| 336 | * Automatically hide the frame after |
| 337 | * invoking any registered <code>WindowListener</code> |
| 338 | * objects. |
| 339 | * |
| 340 | * <li><code>DISPOSE_ON_CLOSE</code> |
| 341 | * (defined in <code>WindowConstants</code>): |
| 342 | * Automatically hide and dispose the |
| 343 | * frame after invoking any registered <code>WindowListener</code> |
| 344 | * objects. |
| 345 | * |
| 346 | * <li><code>EXIT_ON_CLOSE</code> |
| 347 | * (defined in <code>JFrame</code>): |
| 348 | * Exit the application using the <code>System</code> |
| 349 | * <code>exit</code> method. Use this only in applications. |
| 350 | * </ul> |
| 351 | * <p> |
| 352 | * The value is set to <code>HIDE_ON_CLOSE</code> by default. Changes |
| 353 | * to the value of this property cause the firing of a property |
| 354 | * change event, with property name "defaultCloseOperation". |
| 355 | * <p> |
| 356 | * <b>Note</b>: When the last displayable window within the |
| 357 | * Java virtual machine (VM) is disposed of, the VM may |
| 358 | * terminate. See <a href="../../java/awt/doc-files/AWTThreadIssues.html"> |
| 359 | * AWT Threading Issues</a> for more information. |
| 360 | * |
| 361 | * @param operation the operation which should be performed when the |
| 362 | * user closes the frame |
| 363 | * @exception IllegalArgumentException if defaultCloseOperation value |
| 364 | * isn't one of the above valid values |
| 365 | * @see #addWindowListener |
| 366 | * @see #getDefaultCloseOperation |
| 367 | * @see WindowConstants |
| 368 | * @throws SecurityException |
| 369 | * if <code>EXIT_ON_CLOSE</code> has been specified and the |
| 370 | * <code>SecurityManager</code> will |
| 371 | * not allow the caller to invoke <code>System.exit</code> |
| 372 | * @see java.lang.Runtime#exit(int) |
| 373 | * |
| 374 | * @beaninfo |
| 375 | * preferred: true |
| 376 | * bound: true |
| 377 | * enum: DO_NOTHING_ON_CLOSE WindowConstants.DO_NOTHING_ON_CLOSE |
| 378 | * HIDE_ON_CLOSE WindowConstants.HIDE_ON_CLOSE |
| 379 | * DISPOSE_ON_CLOSE WindowConstants.DISPOSE_ON_CLOSE |
| 380 | * EXIT_ON_CLOSE WindowConstants.EXIT_ON_CLOSE |
| 381 | * description: The frame's default close operation. |
| 382 | */ |
| 383 | public void setDefaultCloseOperation(int operation) { |
| 384 | if (operation != DO_NOTHING_ON_CLOSE && |
| 385 | operation != HIDE_ON_CLOSE && |
| 386 | operation != DISPOSE_ON_CLOSE && |
| 387 | operation != EXIT_ON_CLOSE) { |
| 388 | throw new IllegalArgumentException("defaultCloseOperation must be one of: DO_NOTHING_ON_CLOSE, HIDE_ON_CLOSE, DISPOSE_ON_CLOSE, or EXIT_ON_CLOSE"); |
| 389 | } |
| 390 | if (this.defaultCloseOperation != operation) { |
| 391 | if (operation == EXIT_ON_CLOSE) { |
| 392 | SecurityManager security = System.getSecurityManager(); |
| 393 | if (security != null) { |
| 394 | security.checkExit(0); |
| 395 | } |
| 396 | } |
| 397 | int oldValue = this.defaultCloseOperation; |
| 398 | this.defaultCloseOperation = operation; |
| 399 | firePropertyChange("defaultCloseOperation", oldValue, operation); |
| 400 | } |
| 401 | } |
| 402 | |
| 403 | |
| 404 | /** |
| 405 | * Returns the operation that occurs when the user |
| 406 | * initiates a "close" on this frame. |
| 407 | * |
| 408 | * @return an integer indicating the window-close operation |
| 409 | * @see #setDefaultCloseOperation |
| 410 | */ |
| 411 | public int getDefaultCloseOperation() { |
| 412 | return defaultCloseOperation; |
| 413 | } |
| 414 | |
| 415 | /** |
| 416 | * Sets the {@code transferHandler} property, which is a mechanism to |
| 417 | * support transfer of data into this component. Use {@code null} |
| 418 | * if the component does not support data transfer operations. |
| 419 | * <p> |
| 420 | * If the system property {@code suppressSwingDropSupport} is {@code false} |
| 421 | * (the default) and the current drop target on this component is either |
| 422 | * {@code null} or not a user-set drop target, this method will change the |
| 423 | * drop target as follows: If {@code newHandler} is {@code null} it will |
| 424 | * clear the drop target. If not {@code null} it will install a new |
| 425 | * {@code DropTarget}. |
| 426 | * <p> |
| 427 | * Note: When used with {@code JFrame}, {@code TransferHandler} only |
| 428 | * provides data import capability, as the data export related methods |
| 429 | * are currently typed to {@code JComponent}. |
| 430 | * <p> |
| 431 | * Please see |
| 432 | * <a href="http://java.sun.com/docs/books/tutorial/uiswing/misc/dnd.html"> |
| 433 | * How to Use Drag and Drop and Data Transfer</a>, a section in |
| 434 | * <em>The Java Tutorial</em>, for more information. |
| 435 | * |
| 436 | * @param newHandler the new {@code TransferHandler} |
| 437 | * |
| 438 | * @see TransferHandler |
| 439 | * @see #getTransferHandler |
| 440 | * @see java.awt.Component#setDropTarget |
| 441 | * @since 1.6 |
| 442 | * |
| 443 | * @beaninfo |
| 444 | * bound: true |
| 445 | * hidden: true |
| 446 | * description: Mechanism for transfer of data into the component |
| 447 | */ |
| 448 | public void setTransferHandler(TransferHandler newHandler) { |
| 449 | TransferHandler oldHandler = transferHandler; |
| 450 | transferHandler = newHandler; |
| 451 | SwingUtilities.installSwingDropTargetAsNecessary(this, transferHandler); |
| 452 | firePropertyChange("transferHandler", oldHandler, newHandler); |
| 453 | } |
| 454 | |
| 455 | /** |
| 456 | * Gets the <code>transferHandler</code> property. |
| 457 | * |
| 458 | * @return the value of the <code>transferHandler</code> property |
| 459 | * |
| 460 | * @see TransferHandler |
| 461 | * @see #setTransferHandler |
| 462 | * @since 1.6 |
| 463 | */ |
| 464 | public TransferHandler getTransferHandler() { |
| 465 | return transferHandler; |
| 466 | } |
| 467 | |
| 468 | /** |
| 469 | * Just calls <code>paint(g)</code>. This method was overridden to |
| 470 | * prevent an unnecessary call to clear the background. |
| 471 | * |
| 472 | * @param g the Graphics context in which to paint |
| 473 | */ |
| 474 | public void update(Graphics g) { |
| 475 | paint(g); |
| 476 | } |
| 477 | |
| 478 | /** |
| 479 | * Sets the menubar for this frame. |
| 480 | * @param menubar the menubar being placed in the frame |
| 481 | * |
| 482 | * @see #getJMenuBar |
| 483 | * |
| 484 | * @beaninfo |
| 485 | * hidden: true |
| 486 | * description: The menubar for accessing pulldown menus from this frame. |
| 487 | */ |
| 488 | public void setJMenuBar(JMenuBar menubar) { |
| 489 | getRootPane().setMenuBar(menubar); |
| 490 | } |
| 491 | |
| 492 | /** |
| 493 | * Returns the menubar set on this frame. |
| 494 | * @return the menubar for this frame |
| 495 | * |
| 496 | * @see #setJMenuBar |
| 497 | */ |
| 498 | public JMenuBar getJMenuBar() { |
| 499 | return getRootPane().getMenuBar(); |
| 500 | } |
| 501 | |
| 502 | /** |
| 503 | * Returns whether calls to <code>add</code> and |
| 504 | * <code>setLayout</code> are forwarded to the <code>contentPane</code>. |
| 505 | * |
| 506 | * @return true if <code>add</code> and <code>setLayout</code> |
| 507 | * are fowarded; false otherwise |
| 508 | * |
| 509 | * @see #addImpl |
| 510 | * @see #setLayout |
| 511 | * @see #setRootPaneCheckingEnabled |
| 512 | * @see javax.swing.RootPaneContainer |
| 513 | */ |
| 514 | protected boolean isRootPaneCheckingEnabled() { |
| 515 | return rootPaneCheckingEnabled; |
| 516 | } |
| 517 | |
| 518 | |
| 519 | /** |
| 520 | * Sets whether calls to <code>add</code> and |
| 521 | * <code>setLayout</code> are forwarded to the <code>contentPane</code>. |
| 522 | * |
| 523 | * @param enabled true if <code>add</code> and <code>setLayout</code> |
| 524 | * are forwarded, false if they should operate directly on the |
| 525 | * <code>JFrame</code>. |
| 526 | * |
| 527 | * @see #addImpl |
| 528 | * @see #setLayout |
| 529 | * @see #isRootPaneCheckingEnabled |
| 530 | * @see javax.swing.RootPaneContainer |
| 531 | * @beaninfo |
| 532 | * hidden: true |
| 533 | * description: Whether the add and setLayout methods are forwarded |
| 534 | */ |
| 535 | protected void setRootPaneCheckingEnabled(boolean enabled) { |
| 536 | rootPaneCheckingEnabled = enabled; |
| 537 | } |
| 538 | |
| 539 | |
| 540 | /** |
| 541 | * Adds the specified child <code>Component</code>. |
| 542 | * This method is overridden to conditionally forward calls to the |
| 543 | * <code>contentPane</code>. |
| 544 | * By default, children are added to the <code>contentPane</code> instead |
| 545 | * of the frame, refer to {@link javax.swing.RootPaneContainer} for |
| 546 | * details. |
| 547 | * |
| 548 | * @param comp the component to be enhanced |
| 549 | * @param constraints the constraints to be respected |
| 550 | * @param index the index |
| 551 | * @exception IllegalArgumentException if <code>index</code> is invalid |
| 552 | * @exception IllegalArgumentException if adding the container's parent |
| 553 | * to itself |
| 554 | * @exception IllegalArgumentException if adding a window to a container |
| 555 | * |
| 556 | * @see #setRootPaneCheckingEnabled |
| 557 | * @see javax.swing.RootPaneContainer |
| 558 | */ |
| 559 | protected void addImpl(Component comp, Object constraints, int index) |
| 560 | { |
| 561 | if(isRootPaneCheckingEnabled()) { |
| 562 | getContentPane().add(comp, constraints, index); |
| 563 | } |
| 564 | else { |
| 565 | super.addImpl(comp, constraints, index); |
| 566 | } |
| 567 | } |
| 568 | |
| 569 | /** |
| 570 | * Removes the specified component from the container. If |
| 571 | * <code>comp</code> is not the <code>rootPane</code>, this will forward |
| 572 | * the call to the <code>contentPane</code>. This will do nothing if |
| 573 | * <code>comp</code> is not a child of the <code>JFrame</code> or |
| 574 | * <code>contentPane</code>. |
| 575 | * |
| 576 | * @param comp the component to be removed |
| 577 | * @throws NullPointerException if <code>comp</code> is null |
| 578 | * @see #add |
| 579 | * @see javax.swing.RootPaneContainer |
| 580 | */ |
| 581 | public void remove(Component comp) { |
| 582 | if (comp == rootPane) { |
| 583 | super.remove(comp); |
| 584 | } else { |
| 585 | getContentPane().remove(comp); |
| 586 | } |
| 587 | } |
| 588 | |
| 589 | |
| 590 | /** |
| 591 | * Sets the <code>LayoutManager</code>. |
| 592 | * Overridden to conditionally forward the call to the |
| 593 | * <code>contentPane</code>. |
| 594 | * Refer to {@link javax.swing.RootPaneContainer} for |
| 595 | * more information. |
| 596 | * |
| 597 | * @param manager the <code>LayoutManager</code> |
| 598 | * @see #setRootPaneCheckingEnabled |
| 599 | * @see javax.swing.RootPaneContainer |
| 600 | */ |
| 601 | public void setLayout(LayoutManager manager) { |
| 602 | if(isRootPaneCheckingEnabled()) { |
| 603 | getContentPane().setLayout(manager); |
| 604 | } |
| 605 | else { |
| 606 | super.setLayout(manager); |
| 607 | } |
| 608 | } |
| 609 | |
| 610 | |
| 611 | /** |
| 612 | * Returns the <code>rootPane</code> object for this frame. |
| 613 | * @return the <code>rootPane</code> property |
| 614 | * |
| 615 | * @see #setRootPane |
| 616 | * @see RootPaneContainer#getRootPane |
| 617 | */ |
| 618 | public JRootPane getRootPane() { |
| 619 | return rootPane; |
| 620 | } |
| 621 | |
| 622 | |
| 623 | /** |
| 624 | * Sets the <code>rootPane</code> property. |
| 625 | * This method is called by the constructor. |
| 626 | * @param root the <code>rootPane</code> object for this frame |
| 627 | * |
| 628 | * @see #getRootPane |
| 629 | * |
| 630 | * @beaninfo |
| 631 | * hidden: true |
| 632 | * description: the RootPane object for this frame. |
| 633 | */ |
| 634 | protected void setRootPane(JRootPane root) |
| 635 | { |
| 636 | if(rootPane != null) { |
| 637 | remove(rootPane); |
| 638 | } |
| 639 | rootPane = root; |
| 640 | if(rootPane != null) { |
| 641 | boolean checkingEnabled = isRootPaneCheckingEnabled(); |
| 642 | try { |
| 643 | setRootPaneCheckingEnabled(false); |
| 644 | add(rootPane, BorderLayout.CENTER); |
| 645 | } |
| 646 | finally { |
| 647 | setRootPaneCheckingEnabled(checkingEnabled); |
| 648 | } |
| 649 | } |
| 650 | } |
| 651 | |
| 652 | /** |
| 653 | * {@inheritDoc} |
| 654 | */ |
| 655 | public void setIconImage(Image image) { |
| 656 | super.setIconImage(image); |
| 657 | } |
| 658 | |
| 659 | /** |
| 660 | * Returns the <code>contentPane</code> object for this frame. |
| 661 | * @return the <code>contentPane</code> property |
| 662 | * |
| 663 | * @see #setContentPane |
| 664 | * @see RootPaneContainer#getContentPane |
| 665 | */ |
| 666 | public Container getContentPane() { |
| 667 | return getRootPane().getContentPane(); |
| 668 | } |
| 669 | |
| 670 | /** |
| 671 | * Sets the <code>contentPane</code> property. |
| 672 | * This method is called by the constructor. |
| 673 | * <p> |
| 674 | * Swing's painting architecture requires an opaque <code>JComponent</code> |
| 675 | * in the containment hiearchy. This is typically provided by the |
| 676 | * content pane. If you replace the content pane it is recommended you |
| 677 | * replace it with an opaque <code>JComponent</code>. |
| 678 | * |
| 679 | * @param contentPane the <code>contentPane</code> object for this frame |
| 680 | * |
| 681 | * @exception java.awt.IllegalComponentStateException (a runtime |
| 682 | * exception) if the content pane parameter is <code>null</code> |
| 683 | * @see #getContentPane |
| 684 | * @see RootPaneContainer#setContentPane |
| 685 | * @see JRootPane |
| 686 | * |
| 687 | * @beaninfo |
| 688 | * hidden: true |
| 689 | * description: The client area of the frame where child |
| 690 | * components are normally inserted. |
| 691 | */ |
| 692 | public void setContentPane(Container contentPane) { |
| 693 | getRootPane().setContentPane(contentPane); |
| 694 | } |
| 695 | |
| 696 | /** |
| 697 | * Returns the <code>layeredPane</code> object for this frame. |
| 698 | * @return the <code>layeredPane</code> property |
| 699 | * |
| 700 | * @see #setLayeredPane |
| 701 | * @see RootPaneContainer#getLayeredPane |
| 702 | */ |
| 703 | public JLayeredPane getLayeredPane() { |
| 704 | return getRootPane().getLayeredPane(); |
| 705 | } |
| 706 | |
| 707 | /** |
| 708 | * Sets the <code>layeredPane</code> property. |
| 709 | * This method is called by the constructor. |
| 710 | * @param layeredPane the <code>layeredPane</code> object for this frame |
| 711 | * |
| 712 | * @exception java.awt.IllegalComponentStateException (a runtime |
| 713 | * exception) if the layered pane parameter is <code>null</code> |
| 714 | * @see #getLayeredPane |
| 715 | * @see RootPaneContainer#setLayeredPane |
| 716 | * |
| 717 | * @beaninfo |
| 718 | * hidden: true |
| 719 | * description: The pane that holds the various frame layers. |
| 720 | */ |
| 721 | public void setLayeredPane(JLayeredPane layeredPane) { |
| 722 | getRootPane().setLayeredPane(layeredPane); |
| 723 | } |
| 724 | |
| 725 | /** |
| 726 | * Returns the <code>glassPane</code> object for this frame. |
| 727 | * @return the <code>glassPane</code> property |
| 728 | * |
| 729 | * @see #setGlassPane |
| 730 | * @see RootPaneContainer#getGlassPane |
| 731 | */ |
| 732 | public Component getGlassPane() { |
| 733 | return getRootPane().getGlassPane(); |
| 734 | } |
| 735 | |
| 736 | /** |
| 737 | * Sets the <code>glassPane</code> property. |
| 738 | * This method is called by the constructor. |
| 739 | * @param glassPane the <code>glassPane</code> object for this frame |
| 740 | * |
| 741 | * @see #getGlassPane |
| 742 | * @see RootPaneContainer#setGlassPane |
| 743 | * |
| 744 | * @beaninfo |
| 745 | * hidden: true |
| 746 | * description: A transparent pane used for menu rendering. |
| 747 | */ |
| 748 | public void setGlassPane(Component glassPane) { |
| 749 | getRootPane().setGlassPane(glassPane); |
| 750 | } |
| 751 | |
| 752 | /** |
| 753 | * {@inheritDoc} |
| 754 | * |
| 755 | * @since 1.6 |
| 756 | */ |
| 757 | public Graphics getGraphics() { |
| 758 | JComponent.getGraphicsInvoked(this); |
| 759 | return super.getGraphics(); |
| 760 | } |
| 761 | |
| 762 | /** |
| 763 | * Repaints the specified rectangle of this component within |
| 764 | * <code>time</code> milliseconds. Refer to <code>RepaintManager</code> |
| 765 | * for details on how the repaint is handled. |
| 766 | * |
| 767 | * @param time maximum time in milliseconds before update |
| 768 | * @param x the <i>x</i> coordinate |
| 769 | * @param y the <i>y</i> coordinate |
| 770 | * @param width the width |
| 771 | * @param height the height |
| 772 | * @see RepaintManager |
| 773 | * @since 1.6 |
| 774 | */ |
| 775 | public void repaint(long time, int x, int y, int width, int height) { |
| 776 | if (RepaintManager.HANDLE_TOP_LEVEL_PAINT) { |
| 777 | RepaintManager.currentManager(this).addDirtyRegion( |
| 778 | this, x, y, width, height); |
| 779 | } |
| 780 | else { |
| 781 | super.repaint(time, x, y, width, height); |
| 782 | } |
| 783 | } |
| 784 | |
| 785 | /** |
| 786 | * Provides a hint as to whether or not newly created <code>JFrame</code>s |
| 787 | * should have their Window decorations (such as borders, widgets to |
| 788 | * close the window, title...) provided by the current look |
| 789 | * and feel. If <code>defaultLookAndFeelDecorated</code> is true, |
| 790 | * the current <code>LookAndFeel</code> supports providing window |
| 791 | * decorations, and the current window manager supports undecorated |
| 792 | * windows, then newly created <code>JFrame</code>s will have their |
| 793 | * Window decorations provided by the current <code>LookAndFeel</code>. |
| 794 | * Otherwise, newly created <code>JFrame</code>s will have their |
| 795 | * Window decorations provided by the current window manager. |
| 796 | * <p> |
| 797 | * You can get the same effect on a single JFrame by doing the following: |
| 798 | * <pre> |
| 799 | * JFrame frame = new JFrame(); |
| 800 | * frame.setUndecorated(true); |
| 801 | * frame.getRootPane().setWindowDecorationStyle(JRootPane.FRAME); |
| 802 | * </pre> |
| 803 | * |
| 804 | * @param defaultLookAndFeelDecorated A hint as to whether or not current |
| 805 | * look and feel should provide window decorations |
| 806 | * @see javax.swing.LookAndFeel#getSupportsWindowDecorations |
| 807 | * @since 1.4 |
| 808 | */ |
| 809 | public static void setDefaultLookAndFeelDecorated(boolean defaultLookAndFeelDecorated) { |
| 810 | if (defaultLookAndFeelDecorated) { |
| 811 | SwingUtilities.appContextPut(defaultLookAndFeelDecoratedKey, Boolean.TRUE); |
| 812 | } else { |
| 813 | SwingUtilities.appContextPut(defaultLookAndFeelDecoratedKey, Boolean.FALSE); |
| 814 | } |
| 815 | } |
| 816 | |
| 817 | |
| 818 | /** |
| 819 | * Returns true if newly created <code>JFrame</code>s should have their |
| 820 | * Window decorations provided by the current look and feel. This is only |
| 821 | * a hint, as certain look and feels may not support this feature. |
| 822 | * |
| 823 | * @return true if look and feel should provide Window decorations. |
| 824 | * @since 1.4 |
| 825 | */ |
| 826 | public static boolean isDefaultLookAndFeelDecorated() { |
| 827 | Boolean defaultLookAndFeelDecorated = |
| 828 | (Boolean) SwingUtilities.appContextGet(defaultLookAndFeelDecoratedKey); |
| 829 | if (defaultLookAndFeelDecorated == null) { |
| 830 | defaultLookAndFeelDecorated = Boolean.FALSE; |
| 831 | } |
| 832 | return defaultLookAndFeelDecorated.booleanValue(); |
| 833 | } |
| 834 | |
| 835 | /** |
| 836 | * Returns a string representation of this <code>JFrame</code>. |
| 837 | * This method |
| 838 | * is intended to be used only for debugging purposes, and the |
| 839 | * content and format of the returned string may vary between |
| 840 | * implementations. The returned string may be empty but may not |
| 841 | * be <code>null</code>. |
| 842 | * |
| 843 | * @return a string representation of this <code>JFrame</code> |
| 844 | */ |
| 845 | protected String paramString() { |
| 846 | String defaultCloseOperationString; |
| 847 | if (defaultCloseOperation == HIDE_ON_CLOSE) { |
| 848 | defaultCloseOperationString = "HIDE_ON_CLOSE"; |
| 849 | } else if (defaultCloseOperation == DISPOSE_ON_CLOSE) { |
| 850 | defaultCloseOperationString = "DISPOSE_ON_CLOSE"; |
| 851 | } else if (defaultCloseOperation == DO_NOTHING_ON_CLOSE) { |
| 852 | defaultCloseOperationString = "DO_NOTHING_ON_CLOSE"; |
| 853 | } else if (defaultCloseOperation == 3) { |
| 854 | defaultCloseOperationString = "EXIT_ON_CLOSE"; |
| 855 | } else defaultCloseOperationString = ""; |
| 856 | String rootPaneString = (rootPane != null ? |
| 857 | rootPane.toString() : ""); |
| 858 | String rootPaneCheckingEnabledString = (rootPaneCheckingEnabled ? |
| 859 | "true" : "false"); |
| 860 | |
| 861 | return super.paramString() + |
| 862 | ",defaultCloseOperation=" + defaultCloseOperationString + |
| 863 | ",rootPane=" + rootPaneString + |
| 864 | ",rootPaneCheckingEnabled=" + rootPaneCheckingEnabledString; |
| 865 | } |
| 866 | |
| 867 | |
| 868 | |
| 869 | ///////////////// |
| 870 | // Accessibility support |
| 871 | //////////////// |
| 872 | |
| 873 | /** The accessible context property. */ |
| 874 | protected AccessibleContext accessibleContext = null; |
| 875 | |
| 876 | /** |
| 877 | * Gets the AccessibleContext associated with this JFrame. |
| 878 | * For JFrames, the AccessibleContext takes the form of an |
| 879 | * AccessibleJFrame. |
| 880 | * A new AccessibleJFrame instance is created if necessary. |
| 881 | * |
| 882 | * @return an AccessibleJFrame that serves as the |
| 883 | * AccessibleContext of this JFrame |
| 884 | */ |
| 885 | public AccessibleContext getAccessibleContext() { |
| 886 | if (accessibleContext == null) { |
| 887 | accessibleContext = new AccessibleJFrame(); |
| 888 | } |
| 889 | return accessibleContext; |
| 890 | } |
| 891 | |
| 892 | /** |
| 893 | * This class implements accessibility support for the |
| 894 | * <code>JFrame</code> class. It provides an implementation of the |
| 895 | * Java Accessibility API appropriate to frame user-interface |
| 896 | * elements. |
| 897 | */ |
| 898 | protected class AccessibleJFrame extends AccessibleAWTFrame { |
| 899 | |
| 900 | // AccessibleContext methods |
| 901 | /** |
| 902 | * Get the accessible name of this object. |
| 903 | * |
| 904 | * @return the localized name of the object -- can be null if this |
| 905 | * object does not have a name |
| 906 | */ |
| 907 | public String getAccessibleName() { |
| 908 | if (accessibleName != null) { |
| 909 | return accessibleName; |
| 910 | } else { |
| 911 | if (getTitle() == null) { |
| 912 | return super.getAccessibleName(); |
| 913 | } else { |
| 914 | return getTitle(); |
| 915 | } |
| 916 | } |
| 917 | } |
| 918 | |
| 919 | /** |
| 920 | * Get the state of this object. |
| 921 | * |
| 922 | * @return an instance of AccessibleStateSet containing the current |
| 923 | * state set of the object |
| 924 | * @see AccessibleState |
| 925 | */ |
| 926 | public AccessibleStateSet getAccessibleStateSet() { |
| 927 | AccessibleStateSet states = super.getAccessibleStateSet(); |
| 928 | |
| 929 | if (isResizable()) { |
| 930 | states.add(AccessibleState.RESIZABLE); |
| 931 | } |
| 932 | if (getFocusOwner() != null) { |
| 933 | states.add(AccessibleState.ACTIVE); |
| 934 | } |
| 935 | // FIXME: [[[WDW - should also return ICONIFIED and ICONIFIABLE |
| 936 | // if we can ever figure these out]]] |
| 937 | return states; |
| 938 | } |
| 939 | } // inner class AccessibleJFrame |
| 940 | } |