1 /*
2 * Copyright (c) 1997, 2014, 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
26 package javax.swing;
27
28 import java.awt.*;
29
30 import java.beans.PropertyVetoException;
31 import java.beans.PropertyChangeEvent;
32
33 import javax.swing.event.InternalFrameEvent;
34 import javax.swing.event.InternalFrameListener;
35 import javax.swing.plaf.*;
36
37 import javax.accessibility.*;
38
39 import java.io.ObjectOutputStream;
40 import java.io.IOException;
41 import java.lang.StringBuilder;
42 import java.beans.PropertyChangeListener;
43 import sun.awt.AppContext;
44 import sun.swing.SwingUtilities2;
45
46
47 /**
48 * A lightweight object that provides many of the features of
49 * a native frame, including dragging, closing, becoming an icon,
50 * resizing, title display, and support for a menu bar.
51 * For task-oriented documentation and examples of using internal frames,
52 * see <a
53 href="http://docs.oracle.com/javase/tutorial/uiswing/components/internalframe.html" target="_top">How to Use Internal Frames</a>,
54 * a section in <em>The Java Tutorial</em>.
55 *
56 * <p>
57 *
58 * Generally,
59 * you add <code>JInternalFrame</code>s to a <code>JDesktopPane</code>. The UI
60 * delegates the look-and-feel-specific actions to the
61 * <code>DesktopManager</code>
62 * object maintained by the <code>JDesktopPane</code>.
63 * <p>
64 * The <code>JInternalFrame</code> content pane
65 * is where you add child components.
66 * As a convenience, the {@code add}, {@code remove}, and {@code setLayout}
67 * methods of this class are overridden, so that they delegate calls
68 * to the corresponding methods of the {@code ContentPane}.
69 * For example, you can add a child component to an internal frame as follows:
70 * <pre>
71 * internalFrame.add(child);
72 * </pre>
73 * And the child will be added to the contentPane.
74 * The content pane is actually managed by an instance of
75 * <code>JRootPane</code>,
76 * which also manages a layout pane, glass pane, and
77 * optional menu bar for the internal frame. Please see the
78 * <code>JRootPane</code>
79 * documentation for a complete description of these components.
80 * Refer to {@link javax.swing.RootPaneContainer}
81 * for details on adding, removing and setting the <code>LayoutManager</code>
82 * of a <code>JInternalFrame</code>.
83 * <p>
84 * <strong>Warning:</strong> Swing is not thread safe. For more
85 * information see <a
86 * href="package-summary.html#threading">Swing's Threading
87 * Policy</a>.
88 * <p>
89 * <strong>Warning:</strong>
90 * Serialized objects of this class will not be compatible with
91 * future Swing releases. The current serialization support is
92 * appropriate for short term storage or RMI between applications running
93 * the same version of Swing. As of 1.4, support for long term storage
94 * of all JavaBeans™
95 * has been added to the <code>java.beans</code> package.
96 * Please see {@link java.beans.XMLEncoder}.
97 *
98 * @see InternalFrameEvent
99 * @see JDesktopPane
100 * @see DesktopManager
101 * @see JInternalFrame.JDesktopIcon
102 * @see JRootPane
103 * @see javax.swing.RootPaneContainer
104 *
105 * @author David Kloba
106 * @author Rich Schiavi
107 * @since 1.2
108 * @beaninfo
109 * attribute: isContainer true
110 * attribute: containerDelegate getContentPane
111 * description: A frame container which is contained within
112 * another window.
113 */
114 @SuppressWarnings("serial") // Same-version serialization only
115 public class JInternalFrame extends JComponent implements
116 Accessible, WindowConstants,
117 RootPaneContainer
118 {
119 /**
120 * @see #getUIClassID
121 * @see #readObject
122 */
123 private static final String uiClassID = "InternalFrameUI";
124
125 /**
126 * The <code>JRootPane</code> instance that manages the
127 * content pane
128 * and optional menu bar for this internal frame, as well as the
129 * glass pane.
130 *
131 * @see JRootPane
132 * @see RootPaneContainer
133 */
134 protected JRootPane rootPane;
135
136 /**
137 * If true then calls to <code>add</code> and <code>setLayout</code>
138 * will be forwarded to the <code>contentPane</code>. This is initially
139 * false, but is set to true when the <code>JInternalFrame</code> is
140 * constructed.
141 *
142 * @see #isRootPaneCheckingEnabled
143 * @see #setRootPaneCheckingEnabled
144 * @see javax.swing.RootPaneContainer
145 */
146 protected boolean rootPaneCheckingEnabled = false;
147
148 /** The frame can be closed. */
149 protected boolean closable;
150 /** The frame has been closed. */
151 protected boolean isClosed;
152 /** The frame can be expanded to the size of the desktop pane. */
153 protected boolean maximizable;
154 /**
155 * The frame has been expanded to its maximum size.
156 * @see #maximizable
157 */
158 protected boolean isMaximum;
159 /**
160 * The frame can "iconified" (shrunk down and displayed as
161 * an icon-image).
162 * @see JInternalFrame.JDesktopIcon
163 * @see #setIconifiable
164 */
165 protected boolean iconable;
166 /**
167 * The frame has been iconified.
168 * @see #isIcon()
169 */
170 protected boolean isIcon;
171 /** The frame's size can be changed. */
172 protected boolean resizable;
173 /** The frame is currently selected. */
174 protected boolean isSelected;
175 /** The icon shown in the top-left corner of this internal frame. */
176 protected Icon frameIcon;
177 /** The title displayed in this internal frame's title bar. */
178 protected String title;
179 /**
180 * The icon that is displayed when this internal frame is iconified.
181 * @see #iconable
182 */
183 protected JDesktopIcon desktopIcon;
184
185 private Cursor lastCursor;
186
187 private boolean opened;
188
189 private Rectangle normalBounds = null;
190
191 private int defaultCloseOperation = DISPOSE_ON_CLOSE;
192
193 /**
194 * Contains the Component that focus is to go when
195 * <code>restoreSubcomponentFocus</code> is invoked, that is,
196 * <code>restoreSubcomponentFocus</code> sets this to the value returned
197 * from <code>getMostRecentFocusOwner</code>.
198 */
199 private Component lastFocusOwner;
200
201 /** Bound property name. */
202 public final static String CONTENT_PANE_PROPERTY = "contentPane";
203 /** Bound property name. */
204 public final static String MENU_BAR_PROPERTY = "JMenuBar";
205 /** Bound property name. */
206 public final static String TITLE_PROPERTY = "title";
207 /** Bound property name. */
208 public final static String LAYERED_PANE_PROPERTY = "layeredPane";
209 /** Bound property name. */
210 public final static String ROOT_PANE_PROPERTY = "rootPane";
211 /** Bound property name. */
212 public final static String GLASS_PANE_PROPERTY = "glassPane";
213 /** Bound property name. */
214 public final static String FRAME_ICON_PROPERTY = "frameIcon";
215
216 /**
217 * Constrained property name indicated that this frame has
218 * selected status.
219 */
220 public final static String IS_SELECTED_PROPERTY = "selected";
221 /** Constrained property name indicating that the internal frame is closed. */
222 public final static String IS_CLOSED_PROPERTY = "closed";
223 /** Constrained property name indicating that the internal frame is maximized. */
224 public final static String IS_MAXIMUM_PROPERTY = "maximum";
225 /** Constrained property name indicating that the internal frame is iconified. */
226 public final static String IS_ICON_PROPERTY = "icon";
227
228 private static final Object PROPERTY_CHANGE_LISTENER_KEY =
229 new StringBuilder("InternalFramePropertyChangeListener");
230
231 private static void addPropertyChangeListenerIfNecessary() {
232 if (AppContext.getAppContext().get(PROPERTY_CHANGE_LISTENER_KEY) ==
233 null) {
234 PropertyChangeListener focusListener =
235 new FocusPropertyChangeListener();
236
237 AppContext.getAppContext().put(PROPERTY_CHANGE_LISTENER_KEY,
238 focusListener);
239
240 KeyboardFocusManager.getCurrentKeyboardFocusManager().
241 addPropertyChangeListener(focusListener);
242 }
243 }
244
245 private static class FocusPropertyChangeListener implements
246 PropertyChangeListener {
247 public void propertyChange(PropertyChangeEvent e) {
248 if (e.getPropertyName() == "permanentFocusOwner") {
249 updateLastFocusOwner((Component)e.getNewValue());
250 }
251 }
252 }
253
254 private static void updateLastFocusOwner(Component component) {
255 if (component != null) {
256 Component parent = component;
257 while (parent != null && !(parent instanceof Window)) {
258 if (parent instanceof JInternalFrame) {
259 // Update lastFocusOwner for parent.
260 ((JInternalFrame)parent).setLastFocusOwner(component);
261 }
262 parent = parent.getParent();
263 }
264 }
265 }
266
267 /**
268 * Creates a non-resizable, non-closable, non-maximizable,
269 * non-iconifiable <code>JInternalFrame</code> with no title.
270 */
271 public JInternalFrame() {
272 this("", false, false, false, false);
273 }
274
275 /**
276 * Creates a non-resizable, non-closable, non-maximizable,
277 * non-iconifiable <code>JInternalFrame</code> with the specified title.
278 * Note that passing in a <code>null</code> <code>title</code> results in
279 * unspecified behavior and possibly an exception.
280 *
281 * @param title the non-<code>null</code> <code>String</code>
282 * to display in the title bar
283 */
284 public JInternalFrame(String title) {
285 this(title, false, false, false, false);
286 }
287
288 /**
289 * Creates a non-closable, non-maximizable, non-iconifiable
290 * <code>JInternalFrame</code> with the specified title
291 * and resizability.
292 *
293 * @param title the <code>String</code> to display in the title bar
294 * @param resizable if <code>true</code>, the internal frame can be resized
295 */
296 public JInternalFrame(String title, boolean resizable) {
297 this(title, resizable, false, false, false);
298 }
299
300 /**
301 * Creates a non-maximizable, non-iconifiable <code>JInternalFrame</code>
302 * with the specified title, resizability, and
303 * closability.
304 *
305 * @param title the <code>String</code> to display in the title bar
306 * @param resizable if <code>true</code>, the internal frame can be resized
307 * @param closable if <code>true</code>, the internal frame can be closed
308 */
309 public JInternalFrame(String title, boolean resizable, boolean closable) {
310 this(title, resizable, closable, false, false);
311 }
312
313 /**
314 * Creates a non-iconifiable <code>JInternalFrame</code>
315 * with the specified title,
316 * resizability, closability, and maximizability.
317 *
318 * @param title the <code>String</code> to display in the title bar
319 * @param resizable if <code>true</code>, the internal frame can be resized
320 * @param closable if <code>true</code>, the internal frame can be closed
321 * @param maximizable if <code>true</code>, the internal frame can be maximized
322 */
323 public JInternalFrame(String title, boolean resizable, boolean closable,
324 boolean maximizable) {
325 this(title, resizable, closable, maximizable, false);
326 }
327
328 /**
329 * Creates a <code>JInternalFrame</code> with the specified title,
330 * resizability, closability, maximizability, and iconifiability.
331 * All <code>JInternalFrame</code> constructors use this one.
332 *
333 * @param title the <code>String</code> to display in the title bar
334 * @param resizable if <code>true</code>, the internal frame can be resized
335 * @param closable if <code>true</code>, the internal frame can be closed
336 * @param maximizable if <code>true</code>, the internal frame can be maximized
337 * @param iconifiable if <code>true</code>, the internal frame can be iconified
338 */
339 public JInternalFrame(String title, boolean resizable, boolean closable,
340 boolean maximizable, boolean iconifiable) {
341
342 setRootPane(createRootPane());
343 setLayout(new BorderLayout());
344 this.title = title;
345 this.resizable = resizable;
346 this.closable = closable;
347 this.maximizable = maximizable;
348 isMaximum = false;
349 this.iconable = iconifiable;
350 isIcon = false;
351 setVisible(false);
352 setRootPaneCheckingEnabled(true);
353 desktopIcon = new JDesktopIcon(this);
354 updateUI();
355 sun.awt.SunToolkit.checkAndSetPolicy(this);
356 addPropertyChangeListenerIfNecessary();
357 }
358
359 /**
360 * Called by the constructor to set up the <code>JRootPane</code>.
361 * @return a new <code>JRootPane</code>
362 * @see JRootPane
363 */
364 protected JRootPane createRootPane() {
365 return new JRootPane();
366 }
367
368 /**
369 * Returns the look-and-feel object that renders this component.
370 *
371 * @return the <code>InternalFrameUI</code> object that renders
372 * this component
373 */
374 public InternalFrameUI getUI() {
375 return (InternalFrameUI)ui;
376 }
377
378 /**
379 * Sets the UI delegate for this <code>JInternalFrame</code>.
380 * @param ui the UI delegate
381 * @beaninfo
382 * bound: true
383 * hidden: true
384 * attribute: visualUpdate true
385 * description: The UI object that implements the Component's LookAndFeel.
386 */
387 public void setUI(InternalFrameUI ui) {
388 boolean checkingEnabled = isRootPaneCheckingEnabled();
389 try {
390 setRootPaneCheckingEnabled(false);
391 super.setUI(ui);
392 }
393 finally {
394 setRootPaneCheckingEnabled(checkingEnabled);
395 }
396 }
397
398 /**
399 * Notification from the <code>UIManager</code> that the look and feel
400 * has changed.
401 * Replaces the current UI object with the latest version from the
402 * <code>UIManager</code>.
403 *
404 * @see JComponent#updateUI
405 */
406 public void updateUI() {
407 setUI((InternalFrameUI)UIManager.getUI(this));
408 invalidate();
409 if (desktopIcon != null) {
410 desktopIcon.updateUIWhenHidden();
411 }
412 }
413
414 /* This method is called if <code>updateUI</code> was called
415 * on the associated
416 * JDesktopIcon. It's necessary to avoid infinite recursion.
417 */
418 void updateUIWhenHidden() {
419 setUI((InternalFrameUI)UIManager.getUI(this));
420 invalidate();
421 Component[] children = getComponents();
422 if (children != null) {
423 for (Component child : children) {
424 SwingUtilities.updateComponentTreeUI(child);
425 }
426 }
427 }
428
429
430 /**
431 * Returns the name of the look-and-feel
432 * class that renders this component.
433 *
434 * @return the string "InternalFrameUI"
435 *
436 * @see JComponent#getUIClassID
437 * @see UIDefaults#getUI
438 *
439 * @beaninfo
440 * description: UIClassID
441 */
442 public String getUIClassID() {
443 return uiClassID;
444 }
445
446 /**
447 * Returns whether calls to <code>add</code> and
448 * <code>setLayout</code> are forwarded to the <code>contentPane</code>.
449 *
450 * @return true if <code>add</code> and <code>setLayout</code>
451 * are forwarded; false otherwise
452 *
453 * @see #addImpl
454 * @see #setLayout
455 * @see #setRootPaneCheckingEnabled
456 * @see javax.swing.RootPaneContainer
457 */
458 protected boolean isRootPaneCheckingEnabled() {
459 return rootPaneCheckingEnabled;
460 }
461
462 /**
463 * Sets whether calls to <code>add</code> and
464 * <code>setLayout</code> are forwarded to the <code>contentPane</code>.
465 *
466 * @param enabled true if <code>add</code> and <code>setLayout</code>
467 * are forwarded, false if they should operate directly on the
468 * <code>JInternalFrame</code>.
469 *
470 * @see #addImpl
471 * @see #setLayout
472 * @see #isRootPaneCheckingEnabled
473 * @see javax.swing.RootPaneContainer
474 * @beaninfo
475 * hidden: true
476 * description: Whether the add and setLayout methods are forwarded
477 */
478 protected void setRootPaneCheckingEnabled(boolean enabled) {
479 rootPaneCheckingEnabled = enabled;
480 }
481
482 /**
483 * Adds the specified child <code>Component</code>.
484 * This method is overridden to conditionally forward calls to the
485 * <code>contentPane</code>.
486 * By default, children are added to the <code>contentPane</code> instead
487 * of the frame, refer to {@link javax.swing.RootPaneContainer} for
488 * details.
489 *
490 * @param comp the component to be enhanced
491 * @param constraints the constraints to be respected
492 * @param index the index
493 * @exception IllegalArgumentException if <code>index</code> is invalid
494 * @exception IllegalArgumentException if adding the container's parent
495 * to itself
496 * @exception IllegalArgumentException if adding a window to a container
497 *
498 * @see #setRootPaneCheckingEnabled
499 * @see javax.swing.RootPaneContainer
500 */
501 protected void addImpl(Component comp, Object constraints, int index) {
502 if(isRootPaneCheckingEnabled()) {
503 getContentPane().add(comp, constraints, index);
504 }
505 else {
506 super.addImpl(comp, constraints, index);
507 }
508 }
509
510 /**
511 * Removes the specified component from the container. If
512 * <code>comp</code> is not a child of the <code>JInternalFrame</code>
513 * this will forward the call to the <code>contentPane</code>.
514 *
515 * @param comp the component to be removed
516 * @throws NullPointerException if <code>comp</code> is null
517 * @see #add
518 * @see javax.swing.RootPaneContainer
519 */
520 public void remove(Component comp) {
521 int oldCount = getComponentCount();
522 super.remove(comp);
523 if (oldCount == getComponentCount()) {
524 getContentPane().remove(comp);
525 }
526 }
527
528
529 /**
530 * Ensures that, by default, the layout of this component cannot be set.
531 * Overridden to conditionally forward the call to the
532 * <code>contentPane</code>.
533 * Refer to {@link javax.swing.RootPaneContainer} for
534 * more information.
535 *
536 * @param manager the <code>LayoutManager</code>
537 * @see #setRootPaneCheckingEnabled
538 */
539 public void setLayout(LayoutManager manager) {
540 if(isRootPaneCheckingEnabled()) {
541 getContentPane().setLayout(manager);
542 }
543 else {
544 super.setLayout(manager);
545 }
546 }
547
548
549 //////////////////////////////////////////////////////////////////////////
550 /// Property Methods
551 //////////////////////////////////////////////////////////////////////////
552
553 /**
554 * Returns the current <code>JMenuBar</code> for this
555 * <code>JInternalFrame</code>, or <code>null</code>
556 * if no menu bar has been set.
557 * @return the current menu bar, or <code>null</code> if none has been set
558 *
559 * @deprecated As of Swing version 1.0.3,
560 * replaced by <code>getJMenuBar()</code>.
561 */
562 @Deprecated
563 public JMenuBar getMenuBar() {
564 return getRootPane().getMenuBar();
565 }
566
567 /**
568 * Returns the current <code>JMenuBar</code> for this
569 * <code>JInternalFrame</code>, or <code>null</code>
570 * if no menu bar has been set.
571 *
572 * @return the <code>JMenuBar</code> used by this internal frame
573 * @see #setJMenuBar
574 */
575 public JMenuBar getJMenuBar() {
576 return getRootPane().getJMenuBar();
577 }
578
579 /**
580 * Sets the <code>menuBar</code> property for this <code>JInternalFrame</code>.
581 *
582 * @param m the <code>JMenuBar</code> to use in this internal frame
583 * @see #getJMenuBar
584 * @deprecated As of Swing version 1.0.3
585 * replaced by <code>setJMenuBar(JMenuBar m)</code>.
586 */
587 @Deprecated
588 public void setMenuBar(JMenuBar m) {
589 JMenuBar oldValue = getMenuBar();
590 getRootPane().setJMenuBar(m);
591 firePropertyChange(MENU_BAR_PROPERTY, oldValue, m);
592 }
593
594 /**
595 * Sets the <code>menuBar</code> property for this <code>JInternalFrame</code>.
596 *
597 * @param m the <code>JMenuBar</code> to use in this internal frame
598 * @see #getJMenuBar
599 * @beaninfo
600 * bound: true
601 * preferred: true
602 * description: The menu bar for accessing pulldown menus
603 * from this internal frame.
604 */
605 public void setJMenuBar(JMenuBar m){
606 JMenuBar oldValue = getMenuBar();
607 getRootPane().setJMenuBar(m);
608 firePropertyChange(MENU_BAR_PROPERTY, oldValue, m);
609 }
610
611 // implements javax.swing.RootPaneContainer
612 /**
613 * Returns the content pane for this internal frame.
614 * @return the content pane
615 */
616 public Container getContentPane() {
617 return getRootPane().getContentPane();
618 }
619
620
621 /**
622 * Sets this <code>JInternalFrame</code>'s <code>contentPane</code>
623 * property.
624 *
625 * @param c the content pane for this internal frame
626 *
627 * @exception java.awt.IllegalComponentStateException (a runtime
628 * exception) if the content pane parameter is <code>null</code>
629 * @see RootPaneContainer#getContentPane
630 * @beaninfo
631 * bound: true
632 * hidden: true
633 * description: The client area of the internal frame where child
634 * components are normally inserted.
635 */
636 public void setContentPane(Container c) {
637 Container oldValue = getContentPane();
638 getRootPane().setContentPane(c);
639 firePropertyChange(CONTENT_PANE_PROPERTY, oldValue, c);
640 }
641
642 /**
643 * Returns the layered pane for this internal frame.
644 *
645 * @return a <code>JLayeredPane</code> object
646 * @see RootPaneContainer#setLayeredPane
647 * @see RootPaneContainer#getLayeredPane
648 */
649 public JLayeredPane getLayeredPane() {
650 return getRootPane().getLayeredPane();
651 }
652
653 /**
654 * Sets this <code>JInternalFrame</code>'s
655 * <code>layeredPane</code> property.
656 *
657 * @param layered the <code>JLayeredPane</code> for this internal frame
658 *
659 * @exception java.awt.IllegalComponentStateException (a runtime
660 * exception) if the layered pane parameter is <code>null</code>
661 * @see RootPaneContainer#setLayeredPane
662 * @beaninfo
663 * hidden: true
664 * bound: true
665 * description: The pane which holds the various desktop layers.
666 */
667 public void setLayeredPane(JLayeredPane layered) {
668 JLayeredPane oldValue = getLayeredPane();
669 getRootPane().setLayeredPane(layered);
670 firePropertyChange(LAYERED_PANE_PROPERTY, oldValue, layered);
671 }
672
673 /**
674 * Returns the glass pane for this internal frame.
675 *
676 * @return the glass pane
677 * @see RootPaneContainer#setGlassPane
678 */
679 public Component getGlassPane() {
680 return getRootPane().getGlassPane();
681 }
682
683 /**
684 * Sets this <code>JInternalFrame</code>'s
685 * <code>glassPane</code> property.
686 *
687 * @param glass the glass pane for this internal frame
688 * @see RootPaneContainer#getGlassPane
689 * @beaninfo
690 * bound: true
691 * hidden: true
692 * description: A transparent pane used for menu rendering.
693 */
694 public void setGlassPane(Component glass) {
695 Component oldValue = getGlassPane();
696 getRootPane().setGlassPane(glass);
697 firePropertyChange(GLASS_PANE_PROPERTY, oldValue, glass);
698 }
699
700 /**
701 * Returns the <code>rootPane</code> object for this internal frame.
702 *
703 * @return the <code>rootPane</code> property
704 * @see RootPaneContainer#getRootPane
705 */
706 public JRootPane getRootPane() {
707 return rootPane;
708 }
709
710
711 /**
712 * Sets the <code>rootPane</code> property
713 * for this <code>JInternalFrame</code>.
714 * This method is called by the constructor.
715 *
716 * @param root the new <code>JRootPane</code> object
717 * @beaninfo
718 * bound: true
719 * hidden: true
720 * description: The root pane used by this internal frame.
721 */
722 protected void setRootPane(JRootPane root) {
723 if(rootPane != null) {
724 remove(rootPane);
725 }
726 JRootPane oldValue = getRootPane();
727 rootPane = root;
728 if(rootPane != null) {
729 boolean checkingEnabled = isRootPaneCheckingEnabled();
730 try {
731 setRootPaneCheckingEnabled(false);
732 add(rootPane, BorderLayout.CENTER);
733 }
734 finally {
735 setRootPaneCheckingEnabled(checkingEnabled);
736 }
737 }
738 firePropertyChange(ROOT_PANE_PROPERTY, oldValue, root);
739 }
740
741 /**
742 * Sets whether this <code>JInternalFrame</code> can be closed by
743 * some user action.
744 * @param b a boolean value, where <code>true</code> means this internal frame can be closed
745 * @beaninfo
746 * preferred: true
747 * bound: true
748 * description: Indicates whether this internal frame can be closed.
749 */
750 public void setClosable(boolean b) {
751 Boolean oldValue = closable ? Boolean.TRUE : Boolean.FALSE;
752 Boolean newValue = b ? Boolean.TRUE : Boolean.FALSE;
753 closable = b;
754 firePropertyChange("closable", oldValue, newValue);
755 }
756
757 /**
758 * Returns whether this <code>JInternalFrame</code> can be closed by
759 * some user action.
760 * @return <code>true</code> if this internal frame can be closed
761 */
762 public boolean isClosable() {
763 return closable;
764 }
765
766 /**
767 * Returns whether this <code>JInternalFrame</code> is currently closed.
768 * @return <code>true</code> if this internal frame is closed, <code>false</code> otherwise
769 */
770 public boolean isClosed() {
771 return isClosed;
772 }
773
774 /**
775 * Closes this internal frame if the argument is <code>true</code>.
776 * Do not invoke this method with a <code>false</code> argument;
777 * the result of invoking <code>setClosed(false)</code>
778 * is unspecified.
779 *
780 * <p>
781 *
782 * If the internal frame is already closed,
783 * this method does nothing and returns immediately.
784 * Otherwise,
785 * this method begins by firing
786 * an <code>INTERNAL_FRAME_CLOSING</code> event.
787 * Then this method sets the <code>closed</code> property to <code>true</code>
788 * unless a listener vetoes the property change.
789 * This method finishes by making the internal frame
790 * invisible and unselected,
791 * and then firing an <code>INTERNAL_FRAME_CLOSED</code> event.
792 *
793 * <p>
794 *
795 * <b>Note:</b>
796 * To reuse an internal frame that has been closed,
797 * you must add it to a container
798 * (even if you never removed it from its previous container).
799 * Typically, this container will be the <code>JDesktopPane</code>
800 * that previously contained the internal frame.
801 *
802 * @param b must be <code>true</code>
803 *
804 * @exception PropertyVetoException when the attempt to set the
805 * property is vetoed by the <code>JInternalFrame</code>
806 *
807 * @see #isClosed()
808 * @see #setDefaultCloseOperation
809 * @see #dispose
810 * @see javax.swing.event.InternalFrameEvent#INTERNAL_FRAME_CLOSING
811 *
812 * @beaninfo
813 * bound: true
814 * constrained: true
815 * description: Indicates whether this internal frame has been closed.
816 */
817 public void setClosed(boolean b) throws PropertyVetoException {
818 if (isClosed == b) {
819 return;
820 }
821
822 Boolean oldValue = isClosed ? Boolean.TRUE : Boolean.FALSE;
823 Boolean newValue = b ? Boolean.TRUE : Boolean.FALSE;
824 if (b) {
825 fireInternalFrameEvent(InternalFrameEvent.INTERNAL_FRAME_CLOSING);
826 }
827 fireVetoableChange(IS_CLOSED_PROPERTY, oldValue, newValue);
828 isClosed = b;
829 if (isClosed) {
830 setVisible(false);
831 }
832 firePropertyChange(IS_CLOSED_PROPERTY, oldValue, newValue);
833 if (isClosed) {
834 dispose();
835 } else if (!opened) {
836 /* this bogus -- we haven't defined what
837 setClosed(false) means. */
838 // fireInternalFrameEvent(InternalFrameEvent.INTERNAL_FRAME_OPENED);
839 // opened = true;
840 }
841 }
842
843 /**
844 * Sets whether the <code>JInternalFrame</code> can be resized by some
845 * user action.
846 *
847 * @param b a boolean, where <code>true</code> means this internal frame can be resized
848 * @beaninfo
849 * preferred: true
850 * bound: true
851 * description: Determines whether this internal frame can be resized
852 * by the user.
853 */
854 public void setResizable(boolean b) {
855 Boolean oldValue = resizable ? Boolean.TRUE : Boolean.FALSE;
856 Boolean newValue = b ? Boolean.TRUE : Boolean.FALSE;
857 resizable = b;
858 firePropertyChange("resizable", oldValue, newValue);
859 }
860
861 /**
862 * Returns whether the <code>JInternalFrame</code> can be resized
863 * by some user action.
864 *
865 * @return <code>true</code> if this internal frame can be resized, <code>false</code> otherwise
866 */
867 public boolean isResizable() {
868 // don't allow resizing when maximized.
869 return isMaximum ? false : resizable;
870 }
871
872 /**
873 * Sets the <code>iconable</code> property,
874 * which must be <code>true</code>
875 * for the user to be able to
876 * make the <code>JInternalFrame</code> an icon.
877 * Some look and feels might not implement iconification;
878 * they will ignore this property.
879 *
880 * @param b a boolean, where <code>true</code> means this internal frame can be iconified
881 * @beaninfo
882 * preferred: true
883 bound: true
884 * description: Determines whether this internal frame can be iconified.
885 */
886 public void setIconifiable(boolean b) {
887 Boolean oldValue = iconable ? Boolean.TRUE : Boolean.FALSE;
888 Boolean newValue = b ? Boolean.TRUE : Boolean.FALSE;
889 iconable = b;
890 firePropertyChange("iconable", oldValue, newValue);
891 }
892
893 /**
894 * Gets the <code>iconable</code> property,
895 * which by default is <code>false</code>.
896 *
897 * @return the value of the <code>iconable</code> property.
898 *
899 * @see #setIconifiable
900 */
901 public boolean isIconifiable() {
902 return iconable;
903 }
904
905 /**
906 * Returns whether the <code>JInternalFrame</code> is currently iconified.
907 *
908 * @return <code>true</code> if this internal frame is iconified
909 */
910 public boolean isIcon() {
911 return isIcon;
912 }
913
914 /**
915 * Iconifies or de-iconifies this internal frame,
916 * if the look and feel supports iconification.
917 * If the internal frame's state changes to iconified,
918 * this method fires an <code>INTERNAL_FRAME_ICONIFIED</code> event.
919 * If the state changes to de-iconified,
920 * an <code>INTERNAL_FRAME_DEICONIFIED</code> event is fired.
921 *
922 * @param b a boolean, where <code>true</code> means to iconify this internal frame and
923 * <code>false</code> means to de-iconify it
924 * @exception PropertyVetoException when the attempt to set the
925 * property is vetoed by the <code>JInternalFrame</code>
926 *
927 * @see InternalFrameEvent#INTERNAL_FRAME_ICONIFIED
928 * @see InternalFrameEvent#INTERNAL_FRAME_DEICONIFIED
929 *
930 * @beaninfo
931 * bound: true
932 * constrained: true
933 * description: The image displayed when this internal frame is minimized.
934 */
935 public void setIcon(boolean b) throws PropertyVetoException {
936 if (isIcon == b) {
937 return;
938 }
939
940 /* If an internal frame is being iconified before it has a
941 parent, (e.g., client wants it to start iconic), create the
942 parent if possible so that we can place the icon in its
943 proper place on the desktop. I am not sure the call to
944 validate() is necessary, since we are not going to display
945 this frame yet */
946 firePropertyChange("ancestor", null, getParent());
947
948 Boolean oldValue = isIcon ? Boolean.TRUE : Boolean.FALSE;
949 Boolean newValue = b ? Boolean.TRUE : Boolean.FALSE;
950 fireVetoableChange(IS_ICON_PROPERTY, oldValue, newValue);
951 isIcon = b;
952 firePropertyChange(IS_ICON_PROPERTY, oldValue, newValue);
953 if (b)
954 fireInternalFrameEvent(InternalFrameEvent.INTERNAL_FRAME_ICONIFIED);
955 else
956 fireInternalFrameEvent(InternalFrameEvent.INTERNAL_FRAME_DEICONIFIED);
957 }
958
959 /**
960 * Sets the <code>maximizable</code> property,
961 * which determines whether the <code>JInternalFrame</code>
962 * can be maximized by
963 * some user action.
964 * Some look and feels might not support maximizing internal frames;
965 * they will ignore this property.
966 *
967 * @param b <code>true</code> to specify that this internal frame should be maximizable; <code>false</code> to specify that it should not be
968 * @beaninfo
969 * bound: true
970 * preferred: true
971 * description: Determines whether this internal frame can be maximized.
972 */
973 public void setMaximizable(boolean b) {
974 Boolean oldValue = maximizable ? Boolean.TRUE : Boolean.FALSE;
975 Boolean newValue = b ? Boolean.TRUE : Boolean.FALSE;
976 maximizable = b;
977 firePropertyChange("maximizable", oldValue, newValue);
978 }
979
980 /**
981 * Gets the value of the <code>maximizable</code> property.
982 *
983 * @return the value of the <code>maximizable</code> property
984 * @see #setMaximizable
985 */
986 public boolean isMaximizable() {
987 return maximizable;
988 }
989
990 /**
991 * Returns whether the <code>JInternalFrame</code> is currently maximized.
992 *
993 * @return <code>true</code> if this internal frame is maximized, <code>false</code> otherwise
994 */
995 public boolean isMaximum() {
996 return isMaximum;
997 }
998
999 /**
1000 * Maximizes and restores this internal frame. A maximized frame is resized to
1001 * fully fit the <code>JDesktopPane</code> area associated with the
1002 * <code>JInternalFrame</code>.
1003 * A restored frame's size is set to the <code>JInternalFrame</code>'s
1004 * actual size.
1005 *
1006 * @param b a boolean, where <code>true</code> maximizes this internal frame and <code>false</code>
1007 * restores it
1008 * @exception PropertyVetoException when the attempt to set the
1009 * property is vetoed by the <code>JInternalFrame</code>
1010 * @beaninfo
1011 * bound: true
1012 * constrained: true
1013 * description: Indicates whether this internal frame is maximized.
1014 */
1015 public void setMaximum(boolean b) throws PropertyVetoException {
1016 if (isMaximum == b) {
1017 return;
1018 }
1019
1020 Boolean oldValue = isMaximum ? Boolean.TRUE : Boolean.FALSE;
1021 Boolean newValue = b ? Boolean.TRUE : Boolean.FALSE;
1022 fireVetoableChange(IS_MAXIMUM_PROPERTY, oldValue, newValue);
1023 /* setting isMaximum above the event firing means that
1024 property listeners that, for some reason, test it will
1025 get it wrong... See, for example, getNormalBounds() */
1026 isMaximum = b;
1027 firePropertyChange(IS_MAXIMUM_PROPERTY, oldValue, newValue);
1028 }
1029
1030 /**
1031 * Returns the title of the <code>JInternalFrame</code>.
1032 *
1033 * @return a <code>String</code> containing this internal frame's title
1034 * @see #setTitle
1035 */
1036 public String getTitle() {
1037 return title;
1038 }
1039
1040 /**
1041 * Sets the <code>JInternalFrame</code> title. <code>title</code>
1042 * may have a <code>null</code> value.
1043 * @see #getTitle
1044 *
1045 * @param title the <code>String</code> to display in the title bar
1046 * @beaninfo
1047 * preferred: true
1048 * bound: true
1049 * description: The text displayed in the title bar.
1050 */
1051 public void setTitle(String title) {
1052 String oldValue = this.title;
1053 this.title = title;
1054 firePropertyChange(TITLE_PROPERTY, oldValue, title);
1055 }
1056
1057 /**
1058 * Selects or deselects the internal frame
1059 * if it's showing.
1060 * A <code>JInternalFrame</code> normally draws its title bar
1061 * differently if it is
1062 * the selected frame, which indicates to the user that this
1063 * internal frame has the focus.
1064 * When this method changes the state of the internal frame
1065 * from deselected to selected, it fires an
1066 * <code>InternalFrameEvent.INTERNAL_FRAME_ACTIVATED</code> event.
1067 * If the change is from selected to deselected,
1068 * an <code>InternalFrameEvent.INTERNAL_FRAME_DEACTIVATED</code> event
1069 * is fired.
1070 *
1071 * @param selected a boolean, where <code>true</code> means this internal frame
1072 * should become selected (currently active)
1073 * and <code>false</code> means it should become deselected
1074 * @exception PropertyVetoException when the attempt to set the
1075 * property is vetoed by the <code>JInternalFrame</code>
1076 *
1077 * @see #isShowing
1078 * @see InternalFrameEvent#INTERNAL_FRAME_ACTIVATED
1079 * @see InternalFrameEvent#INTERNAL_FRAME_DEACTIVATED
1080 *
1081 * @beaninfo
1082 * constrained: true
1083 * bound: true
1084 * description: Indicates whether this internal frame is currently
1085 * the active frame.
1086 */
1087 public void setSelected(boolean selected) throws PropertyVetoException {
1088 // The InternalFrame may already be selected, but the focus
1089 // may be outside it, so restore the focus to the subcomponent
1090 // which previously had it. See Bug 4302764.
1091 if (selected && isSelected) {
1092 restoreSubcomponentFocus();
1093 return;
1094 }
1095 // The internal frame or the desktop icon must be showing to allow
1096 // selection. We may deselect even if neither is showing.
1097 if ((isSelected == selected) || (selected &&
1098 (isIcon ? !desktopIcon.isShowing() : !isShowing()))) {
1099 return;
1100 }
1101
1102 Boolean oldValue = isSelected ? Boolean.TRUE : Boolean.FALSE;
1103 Boolean newValue = selected ? Boolean.TRUE : Boolean.FALSE;
1104 fireVetoableChange(IS_SELECTED_PROPERTY, oldValue, newValue);
1105
1106 /* We don't want to leave focus in the previously selected
1107 frame, so we have to set it to *something* in case it
1108 doesn't get set in some other way (as if a user clicked on
1109 a component that doesn't request focus). If this call is
1110 happening because the user clicked on a component that will
1111 want focus, then it will get transfered there later.
1112
1113 We test for parent.isShowing() above, because AWT throws a
1114 NPE if you try to request focus on a lightweight before its
1115 parent has been made visible */
1116
1117 if (selected) {
1118 restoreSubcomponentFocus();
1119 }
1120
1121 isSelected = selected;
1122 firePropertyChange(IS_SELECTED_PROPERTY, oldValue, newValue);
1123 if (isSelected)
1124 fireInternalFrameEvent(InternalFrameEvent.INTERNAL_FRAME_ACTIVATED);
1125 else
1126 fireInternalFrameEvent(InternalFrameEvent.INTERNAL_FRAME_DEACTIVATED);
1127 repaint();
1128 }
1129
1130 /**
1131 * Returns whether the <code>JInternalFrame</code> is the
1132 * currently "selected" or active frame.
1133 *
1134 * @return <code>true</code> if this internal frame is currently selected (active)
1135 * @see #setSelected
1136 */
1137 public boolean isSelected() {
1138 return isSelected;
1139 }
1140
1141 /**
1142 * Sets an image to be displayed in the titlebar of this internal frame (usually
1143 * in the top-left corner).
1144 * Some look and feels might not support displaying an icon in the titlebar.
1145 *
1146 * This image is not the <code>desktopIcon</code> object, which
1147 * is the image displayed in the <code>JDesktop</code> when
1148 * this internal frame is iconified.
1149 *
1150 * Passing <code>null</code> to this function is valid,
1151 * but the look and feel can choose the appropriate behavior
1152 * for that situation, such as displaying no icon
1153 * or a default icon for the look and feel.
1154 *
1155 * @param icon the <code>Icon</code> to display in the title bar
1156 * @see #getFrameIcon
1157 * @beaninfo
1158 * bound: true
1159 * description: The icon shown in the top-left corner of this internal frame.
1160 */
1161 public void setFrameIcon(Icon icon) {
1162 Icon oldIcon = frameIcon;
1163 frameIcon = icon;
1164 firePropertyChange(FRAME_ICON_PROPERTY, oldIcon, icon);
1165 }
1166
1167 /**
1168 * Returns the image displayed in the title bar of this internal frame (usually
1169 * in the top-left corner).
1170 *
1171 * @return the <code>Icon</code> displayed in the title bar
1172 * @see #setFrameIcon
1173 */
1174 public Icon getFrameIcon() {
1175 return frameIcon;
1176 }
1177
1178 /**
1179 * Convenience method that moves this component to position 0 if its
1180 * parent is a <code>JLayeredPane</code>.
1181 */
1182 public void moveToFront() {
1183 if (isIcon()) {
1184 if (getDesktopIcon().getParent() instanceof JLayeredPane) {
1185 ((JLayeredPane)getDesktopIcon().getParent()).
1186 moveToFront(getDesktopIcon());
1187 }
1188 }
1189 else if (getParent() instanceof JLayeredPane) {
1190 ((JLayeredPane)getParent()).moveToFront(this);
1191 }
1192 }
1193
1194 /**
1195 * Convenience method that moves this component to position -1 if its
1196 * parent is a <code>JLayeredPane</code>.
1197 */
1198 public void moveToBack() {
1199 if (isIcon()) {
1200 if (getDesktopIcon().getParent() instanceof JLayeredPane) {
1201 ((JLayeredPane)getDesktopIcon().getParent()).
1202 moveToBack(getDesktopIcon());
1203 }
1204 }
1205 else if (getParent() instanceof JLayeredPane) {
1206 ((JLayeredPane)getParent()).moveToBack(this);
1207 }
1208 }
1209
1210 /**
1211 * Returns the last <code>Cursor</code> that was set by the
1212 * <code>setCursor</code> method that is not a resizable
1213 * <code>Cursor</code>.
1214 *
1215 * @return the last non-resizable <code>Cursor</code>
1216 * @since 1.6
1217 */
1218 public Cursor getLastCursor() {
1219 return lastCursor;
1220 }
1221
1222 /**
1223 * {@inheritDoc}
1224 * @since 1.6
1225 */
1226 public void setCursor(Cursor cursor) {
1227 if (cursor == null) {
1228 lastCursor = null;
1229 super.setCursor(cursor);
1230 return;
1231 }
1232 int type = cursor.getType();
1233 if (!(type == Cursor.SW_RESIZE_CURSOR ||
1234 type == Cursor.SE_RESIZE_CURSOR ||
1235 type == Cursor.NW_RESIZE_CURSOR ||
1236 type == Cursor.NE_RESIZE_CURSOR ||
1237 type == Cursor.N_RESIZE_CURSOR ||
1238 type == Cursor.S_RESIZE_CURSOR ||
1239 type == Cursor.W_RESIZE_CURSOR ||
1240 type == Cursor.E_RESIZE_CURSOR)) {
1241 lastCursor = cursor;
1242 }
1243 super.setCursor(cursor);
1244 }
1245
1246 /**
1247 * Convenience method for setting the layer attribute of this component.
1248 *
1249 * @param layer an <code>Integer</code> object specifying this
1250 * frame's desktop layer
1251 * @see JLayeredPane
1252 * @beaninfo
1253 * expert: true
1254 * description: Specifies what desktop layer is used.
1255 */
1256 public void setLayer(Integer layer) {
1257 if(getParent() != null && getParent() instanceof JLayeredPane) {
1258 // Normally we want to do this, as it causes the LayeredPane
1259 // to draw properly.
1260 JLayeredPane p = (JLayeredPane)getParent();
1261 p.setLayer(this, layer.intValue(), p.getPosition(this));
1262 } else {
1263 // Try to do the right thing
1264 JLayeredPane.putLayer(this, layer.intValue());
1265 if(getParent() != null)
1266 getParent().repaint(getX(), getY(), getWidth(), getHeight());
1267 }
1268 }
1269
1270 /**
1271 * Convenience method for setting the layer attribute of this component.
1272 * The method <code>setLayer(Integer)</code> should be used for
1273 * layer values predefined in <code>JLayeredPane</code>.
1274 * When using <code>setLayer(int)</code>, care must be taken not to
1275 * accidentally clash with those values.
1276 *
1277 * @param layer an integer specifying this internal frame's desktop layer
1278 *
1279 * @since 1.3
1280 *
1281 * @see #setLayer(Integer)
1282 * @see JLayeredPane
1283 * @beaninfo
1284 * expert: true
1285 * description: Specifies what desktop layer is used.
1286 */
1287 public void setLayer(int layer) {
1288 this.setLayer(Integer.valueOf(layer));
1289 }
1290
1291 /**
1292 * Convenience method for getting the layer attribute of this component.
1293 *
1294 * @return an <code>Integer</code> object specifying this
1295 * frame's desktop layer
1296 * @see JLayeredPane
1297 */
1298 public int getLayer() {
1299 return JLayeredPane.getLayer(this);
1300 }
1301
1302 /**
1303 * Convenience method that searches the ancestor hierarchy for a
1304 * <code>JDesktop</code> instance. If <code>JInternalFrame</code>
1305 * finds none, the <code>desktopIcon</code> tree is searched.
1306 *
1307 * @return the <code>JDesktopPane</code> this internal frame belongs to,
1308 * or <code>null</code> if none is found
1309 */
1310 public JDesktopPane getDesktopPane() {
1311 Container p;
1312
1313 // Search upward for desktop
1314 p = getParent();
1315 while(p != null && !(p instanceof JDesktopPane))
1316 p = p.getParent();
1317
1318 if(p == null) {
1319 // search its icon parent for desktop
1320 p = getDesktopIcon().getParent();
1321 while(p != null && !(p instanceof JDesktopPane))
1322 p = p.getParent();
1323 }
1324
1325 return (JDesktopPane)p;
1326 }
1327
1328 /**
1329 * Sets the <code>JDesktopIcon</code> associated with this
1330 * <code>JInternalFrame</code>.
1331 *
1332 * @param d the <code>JDesktopIcon</code> to display on the desktop
1333 * @see #getDesktopIcon
1334 * @beaninfo
1335 * bound: true
1336 * description: The icon shown when this internal frame is minimized.
1337 */
1338 public void setDesktopIcon(JDesktopIcon d) {
1339 JDesktopIcon oldValue = getDesktopIcon();
1340 desktopIcon = d;
1341 firePropertyChange("desktopIcon", oldValue, d);
1342 }
1343
1344 /**
1345 * Returns the <code>JDesktopIcon</code> used when this
1346 * <code>JInternalFrame</code> is iconified.
1347 *
1348 * @return the <code>JDesktopIcon</code> displayed on the desktop
1349 * @see #setDesktopIcon
1350 */
1351 public JDesktopIcon getDesktopIcon() {
1352 return desktopIcon;
1353 }
1354
1355 /**
1356 * If the <code>JInternalFrame</code> is not in maximized state, returns
1357 * <code>getBounds()</code>; otherwise, returns the bounds that the
1358 * <code>JInternalFrame</code> would be restored to.
1359 *
1360 * @return a <code>Rectangle</code> containing the bounds of this
1361 * frame when in the normal state
1362 * @since 1.3
1363 */
1364 public Rectangle getNormalBounds() {
1365
1366 /* we used to test (!isMaximum) here, but since this
1367 method is used by the property listener for the
1368 IS_MAXIMUM_PROPERTY, it ended up getting the wrong
1369 answer... Since normalBounds get set to null when the
1370 frame is restored, this should work better */
1371
1372 if (normalBounds != null) {
1373 return normalBounds;
1374 } else {
1375 return getBounds();
1376 }
1377 }
1378
1379 /**
1380 * Sets the normal bounds for this internal frame, the bounds that
1381 * this internal frame would be restored to from its maximized state.
1382 * This method is intended for use only by desktop managers.
1383 *
1384 * @param r the bounds that this internal frame should be restored to
1385 * @since 1.3
1386 */
1387 public void setNormalBounds(Rectangle r) {
1388 normalBounds = r;
1389 }
1390
1391 /**
1392 * If this <code>JInternalFrame</code> is active,
1393 * returns the child that has focus.
1394 * Otherwise, returns <code>null</code>.
1395 *
1396 * @return the component with focus, or <code>null</code> if no children have focus
1397 * @since 1.3
1398 */
1399 public Component getFocusOwner() {
1400 if (isSelected()) {
1401 return lastFocusOwner;
1402 }
1403 return null;
1404 }
1405
1406 /**
1407 * Returns the child component of this <code>JInternalFrame</code>
1408 * that will receive the
1409 * focus when this <code>JInternalFrame</code> is selected.
1410 * If this <code>JInternalFrame</code> is
1411 * currently selected, this method returns the same component as
1412 * the <code>getFocusOwner</code> method.
1413 * If this <code>JInternalFrame</code> is not selected,
1414 * then the child component that most recently requested focus will be
1415 * returned. If no child component has ever requested focus, then this
1416 * <code>JInternalFrame</code>'s initial focusable component is returned.
1417 * If no such
1418 * child exists, then this <code>JInternalFrame</code>'s default component
1419 * to focus is returned.
1420 *
1421 * @return the child component that will receive focus when this
1422 * <code>JInternalFrame</code> is selected
1423 * @see #getFocusOwner
1424 * @see #isSelected
1425 * @since 1.4
1426 */
1427 public Component getMostRecentFocusOwner() {
1428 if (isSelected()) {
1429 return getFocusOwner();
1430 }
1431
1432 if (lastFocusOwner != null) {
1433 return lastFocusOwner;
1434 }
1435
1436 FocusTraversalPolicy policy = getFocusTraversalPolicy();
1437 if (policy instanceof InternalFrameFocusTraversalPolicy) {
1438 return ((InternalFrameFocusTraversalPolicy)policy).
1439 getInitialComponent(this);
1440 }
1441
1442 Component toFocus = policy.getDefaultComponent(this);
1443 if (toFocus != null) {
1444 return toFocus;
1445 }
1446 return getContentPane();
1447 }
1448
1449 /**
1450 * Requests the internal frame to restore focus to the
1451 * last subcomponent that had focus. This is used by the UI when
1452 * the user selected this internal frame --
1453 * for example, by clicking on the title bar.
1454 *
1455 * @since 1.3
1456 */
1457 public void restoreSubcomponentFocus() {
1458 if (isIcon()) {
1459 SwingUtilities2.compositeRequestFocus(getDesktopIcon());
1460 }
1461 else {
1462 Component component = KeyboardFocusManager.getCurrentKeyboardFocusManager().getPermanentFocusOwner();
1463 if ((component == null) || !SwingUtilities.isDescendingFrom(component, this)) {
1464 // FocusPropertyChangeListener will eventually update
1465 // lastFocusOwner. As focus requests are asynchronous
1466 // lastFocusOwner may be accessed before it has been correctly
1467 // updated. To avoid any problems, lastFocusOwner is immediately
1468 // set, assuming the request will succeed.
1469 setLastFocusOwner(getMostRecentFocusOwner());
1470 if (lastFocusOwner == null) {
1471 // Make sure focus is restored somewhere, so that
1472 // we don't leave a focused component in another frame while
1473 // this frame is selected.
1474 setLastFocusOwner(getContentPane());
1475 }
1476 lastFocusOwner.requestFocus();
1477 }
1478 }
1479 }
1480
1481 private void setLastFocusOwner(Component component) {
1482 lastFocusOwner = component;
1483 }
1484
1485 /**
1486 * Moves and resizes this component. Unlike other components,
1487 * this implementation also forces re-layout, so that frame
1488 * decorations such as the title bar are always redisplayed.
1489 *
1490 * @param x an integer giving the component's new horizontal position
1491 * measured in pixels from the left of its container
1492 * @param y an integer giving the component's new vertical position,
1493 * measured in pixels from the bottom of its container
1494 * @param width an integer giving the component's new width in pixels
1495 * @param height an integer giving the component's new height in pixels
1496 */
1497 public void reshape(int x, int y, int width, int height) {
1498 super.reshape(x, y, width, height);
1499 validate();
1500 repaint();
1501 }
1502
1503 ///////////////////////////
1504 // Frame/Window equivalents
1505 ///////////////////////////
1506
1507 /**
1508 * Adds the specified listener to receive internal
1509 * frame events from this internal frame.
1510 *
1511 * @param l the internal frame listener
1512 */
1513 public void addInternalFrameListener(InternalFrameListener l) { // remind: sync ??
1514 listenerList.add(InternalFrameListener.class, l);
1515 // remind: needed?
1516 enableEvents(0); // turn on the newEventsOnly flag in Component.
1517 }
1518
1519 /**
1520 * Removes the specified internal frame listener so that it no longer
1521 * receives internal frame events from this internal frame.
1522 *
1523 * @param l the internal frame listener
1524 */
1525 public void removeInternalFrameListener(InternalFrameListener l) { // remind: sync??
1526 listenerList.remove(InternalFrameListener.class, l);
1527 }
1528
1529 /**
1530 * Returns an array of all the <code>InternalFrameListener</code>s added
1531 * to this <code>JInternalFrame</code> with
1532 * <code>addInternalFrameListener</code>.
1533 *
1534 * @return all of the <code>InternalFrameListener</code>s added or an empty
1535 * array if no listeners have been added
1536 * @since 1.4
1537 *
1538 * @see #addInternalFrameListener
1539 */
1540 public InternalFrameListener[] getInternalFrameListeners() {
1541 return listenerList.getListeners(InternalFrameListener.class);
1542 }
1543
1544 // remind: name ok? all one method ok? need to be synchronized?
1545 /**
1546 * Fires an internal frame event.
1547 *
1548 * @param id the type of the event being fired; one of the following:
1549 * <ul>
1550 * <li><code>InternalFrameEvent.INTERNAL_FRAME_OPENED</code>
1551 * <li><code>InternalFrameEvent.INTERNAL_FRAME_CLOSING</code>
1552 * <li><code>InternalFrameEvent.INTERNAL_FRAME_CLOSED</code>
1553 * <li><code>InternalFrameEvent.INTERNAL_FRAME_ICONIFIED</code>
1554 * <li><code>InternalFrameEvent.INTERNAL_FRAME_DEICONIFIED</code>
1555 * <li><code>InternalFrameEvent.INTERNAL_FRAME_ACTIVATED</code>
1556 * <li><code>InternalFrameEvent.INTERNAL_FRAME_DEACTIVATED</code>
1557 * </ul>
1558 * If the event type is not one of the above, nothing happens.
1559 */
1560 protected void fireInternalFrameEvent(int id){
1561 Object[] listeners = listenerList.getListenerList();
1562 InternalFrameEvent e = null;
1563 for (int i = listeners.length -2; i >=0; i -= 2){
1564 if (listeners[i] == InternalFrameListener.class){
1565 if (e == null){
1566 e = new InternalFrameEvent(this, id);
1567 // System.out.println("InternalFrameEvent: " + e.paramString());
1568 }
1569 switch(e.getID()) {
1570 case InternalFrameEvent.INTERNAL_FRAME_OPENED:
1571 ((InternalFrameListener)listeners[i+1]).internalFrameOpened(e);
1572 break;
1573 case InternalFrameEvent.INTERNAL_FRAME_CLOSING:
1574 ((InternalFrameListener)listeners[i+1]).internalFrameClosing(e);
1575 break;
1576 case InternalFrameEvent.INTERNAL_FRAME_CLOSED:
1577 ((InternalFrameListener)listeners[i+1]).internalFrameClosed(e);
1578 break;
1579 case InternalFrameEvent.INTERNAL_FRAME_ICONIFIED:
1580 ((InternalFrameListener)listeners[i+1]).internalFrameIconified(e);
1581 break;
1582 case InternalFrameEvent.INTERNAL_FRAME_DEICONIFIED:
1583 ((InternalFrameListener)listeners[i+1]).internalFrameDeiconified(e);
1584 break;
1585 case InternalFrameEvent.INTERNAL_FRAME_ACTIVATED:
1586 ((InternalFrameListener)listeners[i+1]).internalFrameActivated(e);
1587 break;
1588 case InternalFrameEvent.INTERNAL_FRAME_DEACTIVATED:
1589 ((InternalFrameListener)listeners[i+1]).internalFrameDeactivated(e);
1590 break;
1591 default:
1592 break;
1593 }
1594 }
1595 }
1596 /* we could do it off the event, but at the moment, that's not how
1597 I'm implementing it */
1598 // if (id == InternalFrameEvent.INTERNAL_FRAME_CLOSING) {
1599 // doDefaultCloseAction();
1600 // }
1601 }
1602
1603 /**
1604 * Fires an
1605 * <code>INTERNAL_FRAME_CLOSING</code> event
1606 * and then performs the action specified by
1607 * the internal frame's default close operation.
1608 * This method is typically invoked by the
1609 * look-and-feel-implemented action handler
1610 * for the internal frame's close button.
1611 *
1612 * @since 1.3
1613 * @see #setDefaultCloseOperation
1614 * @see javax.swing.event.InternalFrameEvent#INTERNAL_FRAME_CLOSING
1615 */
1616 public void doDefaultCloseAction() {
1617 fireInternalFrameEvent(InternalFrameEvent.INTERNAL_FRAME_CLOSING);
1618 switch(defaultCloseOperation) {
1619 case DO_NOTHING_ON_CLOSE:
1620 break;
1621 case HIDE_ON_CLOSE:
1622 setVisible(false);
1623 if (isSelected())
1624 try {
1625 setSelected(false);
1626 } catch (PropertyVetoException pve) {}
1627
1628 /* should this activate the next frame? that's really
1629 desktopmanager's policy... */
1630 break;
1631 case DISPOSE_ON_CLOSE:
1632 try {
1633 fireVetoableChange(IS_CLOSED_PROPERTY, Boolean.FALSE,
1634 Boolean.TRUE);
1635 isClosed = true;
1636 setVisible(false);
1637 firePropertyChange(IS_CLOSED_PROPERTY, Boolean.FALSE,
1638 Boolean.TRUE);
1639 dispose();
1640 } catch (PropertyVetoException pve) {}
1641 break;
1642 default:
1643 break;
1644 }
1645 }
1646
1647 /**
1648 * Sets the operation that will happen by default when
1649 * the user initiates a "close" on this internal frame.
1650 * The possible choices are:
1651 * <br><br>
1652 * <dl>
1653 * <dt><code>DO_NOTHING_ON_CLOSE</code>
1654 * <dd> Do nothing.
1655 * This requires the program to handle the operation
1656 * in the <code>windowClosing</code> method
1657 * of a registered <code>InternalFrameListener</code> object.
1658 * <dt><code>HIDE_ON_CLOSE</code>
1659 * <dd> Automatically make the internal frame invisible.
1660 * <dt><code>DISPOSE_ON_CLOSE</code>
1661 * <dd> Automatically dispose of the internal frame.
1662 * </dl>
1663 * <p>
1664 * The default value is <code>DISPOSE_ON_CLOSE</code>.
1665 * Before performing the specified close operation,
1666 * the internal frame fires
1667 * an <code>INTERNAL_FRAME_CLOSING</code> event.
1668 *
1669 * @param operation one of the following constants defined in
1670 * <code>javax.swing.WindowConstants</code>
1671 * (an interface implemented by
1672 * <code>JInternalFrame</code>):
1673 * <code>DO_NOTHING_ON_CLOSE</code>,
1674 * <code>HIDE_ON_CLOSE</code>, or
1675 * <code>DISPOSE_ON_CLOSE</code>
1676 *
1677 * @see #addInternalFrameListener
1678 * @see #getDefaultCloseOperation
1679 * @see #setVisible
1680 * @see #dispose
1681 * @see InternalFrameEvent#INTERNAL_FRAME_CLOSING
1682 */
1683 public void setDefaultCloseOperation(int operation) {
1684 this.defaultCloseOperation = operation;
1685 }
1686
1687 /**
1688 * Returns the default operation that occurs when the user
1689 * initiates a "close" on this internal frame.
1690 * @return the operation that will occur when the user closes the internal
1691 * frame
1692 * @see #setDefaultCloseOperation
1693 */
1694 public int getDefaultCloseOperation() {
1695 return defaultCloseOperation;
1696 }
1697
1698 /**
1699 * Causes subcomponents of this <code>JInternalFrame</code>
1700 * to be laid out at their preferred size. Internal frames that are
1701 * iconized or maximized are first restored and then packed. If the
1702 * internal frame is unable to be restored its state is not changed
1703 * and will not be packed.
1704 *
1705 * @see java.awt.Window#pack
1706 */
1707 public void pack() {
1708 try {
1709 if (isIcon()) {
1710 setIcon(false);
1711 } else if (isMaximum()) {
1712 setMaximum(false);
1713 }
1714 } catch(PropertyVetoException e) {
1715 return;
1716 }
1717 setSize(getPreferredSize());
1718 validate();
1719 }
1720
1721 /**
1722 * If the internal frame is not visible,
1723 * brings the internal frame to the front,
1724 * makes it visible,
1725 * and attempts to select it.
1726 * The first time the internal frame is made visible,
1727 * this method also fires an <code>INTERNAL_FRAME_OPENED</code> event.
1728 * This method does nothing if the internal frame is already visible.
1729 * Invoking this method
1730 * has the same result as invoking
1731 * <code>setVisible(true)</code>.
1732 *
1733 * @see #moveToFront
1734 * @see #setSelected
1735 * @see InternalFrameEvent#INTERNAL_FRAME_OPENED
1736 * @see #setVisible
1737 */
1738 public void show() {
1739 // bug 4312922
1740 if (isVisible()) {
1741 //match the behavior of setVisible(true): do nothing
1742 return;
1743 }
1744
1745 // bug 4149505
1746 if (!opened) {
1747 fireInternalFrameEvent(InternalFrameEvent.INTERNAL_FRAME_OPENED);
1748 opened = true;
1749 }
1750
1751 /* icon default visibility is false; set it to true so that it shows
1752 up when user iconifies frame */
1753 getDesktopIcon().setVisible(true);
1754
1755 toFront();
1756 super.show();
1757
1758 if (isIcon) {
1759 return;
1760 }
1761
1762 if (!isSelected()) {
1763 try {
1764 setSelected(true);
1765 } catch (PropertyVetoException pve) {}
1766 }
1767 }
1768
1769 public void hide() {
1770 if (isIcon()) {
1771 getDesktopIcon().setVisible(false);
1772 }
1773 super.hide();
1774 }
1775
1776 /**
1777 * Makes this internal frame
1778 * invisible, unselected, and closed.
1779 * If the frame is not already closed,
1780 * this method fires an
1781 * <code>INTERNAL_FRAME_CLOSED</code> event.
1782 * The results of invoking this method are similar to
1783 * <code>setClosed(true)</code>,
1784 * but <code>dispose</code> always succeeds in closing
1785 * the internal frame and does not fire
1786 * an <code>INTERNAL_FRAME_CLOSING</code> event.
1787 *
1788 * @see javax.swing.event.InternalFrameEvent#INTERNAL_FRAME_CLOSED
1789 * @see #setVisible
1790 * @see #setSelected
1791 * @see #setClosed
1792 */
1793 public void dispose() {
1794 if (isVisible()) {
1795 setVisible(false);
1796 }
1797 if (isSelected()) {
1798 try {
1799 setSelected(false);
1800 } catch (PropertyVetoException pve) {}
1801 }
1802 if (!isClosed) {
1803 firePropertyChange(IS_CLOSED_PROPERTY, Boolean.FALSE, Boolean.TRUE);
1804 isClosed = true;
1805 }
1806 fireInternalFrameEvent(InternalFrameEvent.INTERNAL_FRAME_CLOSED);
1807 }
1808
1809 /**
1810 * Brings this internal frame to the front.
1811 * Places this internal frame at the top of the stacking order
1812 * and makes the corresponding adjustment to other visible internal
1813 * frames.
1814 *
1815 * @see java.awt.Window#toFront
1816 * @see #moveToFront
1817 */
1818 public void toFront() {
1819 moveToFront();
1820 }
1821
1822 /**
1823 * Sends this internal frame to the back.
1824 * Places this internal frame at the bottom of the stacking order
1825 * and makes the corresponding adjustment to other visible
1826 * internal frames.
1827 *
1828 * @see java.awt.Window#toBack
1829 * @see #moveToBack
1830 */
1831 public void toBack() {
1832 moveToBack();
1833 }
1834
1835 /**
1836 * Does nothing because <code>JInternalFrame</code>s must always be roots of a focus
1837 * traversal cycle.
1838 *
1839 * @param focusCycleRoot this value is ignored
1840 * @see #isFocusCycleRoot
1841 * @see java.awt.Container#setFocusTraversalPolicy
1842 * @see java.awt.Container#getFocusTraversalPolicy
1843 * @since 1.4
1844 */
1845 public final void setFocusCycleRoot(boolean focusCycleRoot) {
1846 }
1847
1848 /**
1849 * Always returns <code>true</code> because all <code>JInternalFrame</code>s must be
1850 * roots of a focus traversal cycle.
1851 *
1852 * @return <code>true</code>
1853 * @see #setFocusCycleRoot
1854 * @see java.awt.Container#setFocusTraversalPolicy
1855 * @see java.awt.Container#getFocusTraversalPolicy
1856 * @since 1.4
1857 */
1858 public final boolean isFocusCycleRoot() {
1859 return true;
1860 }
1861
1862 /**
1863 * Always returns <code>null</code> because <code>JInternalFrame</code>s
1864 * must always be roots of a focus
1865 * traversal cycle.
1866 *
1867 * @return <code>null</code>
1868 * @see java.awt.Container#isFocusCycleRoot()
1869 * @since 1.4
1870 */
1871 public final Container getFocusCycleRootAncestor() {
1872 return null;
1873 }
1874
1875 /**
1876 * Gets the warning string that is displayed with this internal frame.
1877 * Since an internal frame is always secure (since it's fully
1878 * contained within a window that might need a warning string)
1879 * this method always returns <code>null</code>.
1880 * @return <code>null</code>
1881 * @see java.awt.Window#getWarningString
1882 */
1883 public final String getWarningString() {
1884 return null;
1885 }
1886
1887 /**
1888 * See <code>readObject</code> and <code>writeObject</code>
1889 * in <code>JComponent</code> for more
1890 * information about serialization in Swing.
1891 */
1892 private void writeObject(ObjectOutputStream s) throws IOException {
1893 s.defaultWriteObject();
1894 if (getUIClassID().equals(uiClassID)) {
1895 byte count = JComponent.getWriteObjCounter(this);
1896 JComponent.setWriteObjCounter(this, --count);
1897 if (count == 0 && ui != null) {
1898 boolean old = isRootPaneCheckingEnabled();
1899 try {
1900 setRootPaneCheckingEnabled(false);
1901 ui.installUI(this);
1902 } finally {
1903 setRootPaneCheckingEnabled(old);
1904 }
1905 }
1906 }
1907 }
1908
1909 /* Called from the JComponent's EnableSerializationFocusListener to
1910 * do any Swing-specific pre-serialization configuration.
1911 */
1912 void compWriteObjectNotify() {
1913 // need to disable rootpane checking for InternalFrame: 4172083
1914 boolean old = isRootPaneCheckingEnabled();
1915 try {
1916 setRootPaneCheckingEnabled(false);
1917 super.compWriteObjectNotify();
1918 }
1919 finally {
1920 setRootPaneCheckingEnabled(old);
1921 }
1922 }
1923
1924 /**
1925 * Returns a string representation of this <code>JInternalFrame</code>.
1926 * This method
1927 * is intended to be used only for debugging purposes, and the
1928 * content and format of the returned string may vary between
1929 * implementations. The returned string may be empty but may not
1930 * be <code>null</code>.
1931 *
1932 * @return a string representation of this <code>JInternalFrame</code>
1933 */
1934 protected String paramString() {
1935 String rootPaneString = (rootPane != null ?
1936 rootPane.toString() : "");
1937 String rootPaneCheckingEnabledString = (rootPaneCheckingEnabled ?
1938 "true" : "false");
1939 String closableString = (closable ? "true" : "false");
1940 String isClosedString = (isClosed ? "true" : "false");
1941 String maximizableString = (maximizable ? "true" : "false");
1942 String isMaximumString = (isMaximum ? "true" : "false");
1943 String iconableString = (iconable ? "true" : "false");
1944 String isIconString = (isIcon ? "true" : "false");
1945 String resizableString = (resizable ? "true" : "false");
1946 String isSelectedString = (isSelected ? "true" : "false");
1947 String frameIconString = (frameIcon != null ?
1948 frameIcon.toString() : "");
1949 String titleString = (title != null ?
1950 title : "");
1951 String desktopIconString = (desktopIcon != null ?
1952 desktopIcon.toString() : "");
1953 String openedString = (opened ? "true" : "false");
1954 String defaultCloseOperationString;
1955 if (defaultCloseOperation == HIDE_ON_CLOSE) {
1956 defaultCloseOperationString = "HIDE_ON_CLOSE";
1957 } else if (defaultCloseOperation == DISPOSE_ON_CLOSE) {
1958 defaultCloseOperationString = "DISPOSE_ON_CLOSE";
1959 } else if (defaultCloseOperation == DO_NOTHING_ON_CLOSE) {
1960 defaultCloseOperationString = "DO_NOTHING_ON_CLOSE";
1961 } else defaultCloseOperationString = "";
1962
1963 return super.paramString() +
1964 ",closable=" + closableString +
1965 ",defaultCloseOperation=" + defaultCloseOperationString +
1966 ",desktopIcon=" + desktopIconString +
1967 ",frameIcon=" + frameIconString +
1968 ",iconable=" + iconableString +
1969 ",isClosed=" + isClosedString +
1970 ",isIcon=" + isIconString +
1971 ",isMaximum=" + isMaximumString +
1972 ",isSelected=" + isSelectedString +
1973 ",maximizable=" + maximizableString +
1974 ",opened=" + openedString +
1975 ",resizable=" + resizableString +
1976 ",rootPane=" + rootPaneString +
1977 ",rootPaneCheckingEnabled=" + rootPaneCheckingEnabledString +
1978 ",title=" + titleString;
1979 }
1980
1981 // ======= begin optimized frame dragging defence code ==============
1982
1983 boolean isDragging = false;
1984 boolean danger = false;
1985
1986 /**
1987 * Overridden to allow optimized painting when the
1988 * internal frame is being dragged.
1989 */
1990 protected void paintComponent(Graphics g) {
1991 if (isDragging) {
1992 // System.out.println("ouch");
1993 danger = true;
1994 }
1995
1996 super.paintComponent(g);
1997 }
1998
1999 // ======= end optimized frame dragging defence code ==============
2000
2001 /////////////////
2002 // Accessibility support
2003 ////////////////
2004
2005 /**
2006 * Gets the <code>AccessibleContext</code> associated with this
2007 * <code>JInternalFrame</code>.
2008 * For internal frames, the <code>AccessibleContext</code>
2009 * takes the form of an
2010 * <code>AccessibleJInternalFrame</code> object.
2011 * A new <code>AccessibleJInternalFrame</code> instance is created if necessary.
2012 *
2013 * @return an <code>AccessibleJInternalFrame</code> that serves as the
2014 * <code>AccessibleContext</code> of this
2015 * <code>JInternalFrame</code>
2016 * @see AccessibleJInternalFrame
2017 */
2018 public AccessibleContext getAccessibleContext() {
2019 if (accessibleContext == null) {
2020 accessibleContext = new AccessibleJInternalFrame();
2021 }
2022 return accessibleContext;
2023 }
2024
2025 /**
2026 * This class implements accessibility support for the
2027 * <code>JInternalFrame</code> class. It provides an implementation of the
2028 * Java Accessibility API appropriate to internal frame user-interface
2029 * elements.
2030 * <p>
2031 * <strong>Warning:</strong>
2032 * Serialized objects of this class will not be compatible with
2033 * future Swing releases. The current serialization support is
2034 * appropriate for short term storage or RMI between applications running
2035 * the same version of Swing. As of 1.4, support for long term storage
2036 * of all JavaBeans™
2037 * has been added to the <code>java.beans</code> package.
2038 * Please see {@link java.beans.XMLEncoder}.
2039 */
2040 @SuppressWarnings("serial") // Same-version serialization only
2041 protected class AccessibleJInternalFrame extends AccessibleJComponent
2042 implements AccessibleValue {
2043
2044 /**
2045 * Get the accessible name of this object.
2046 *
2047 * @return the localized name of the object -- can be <code>null</code> if this
2048 * object does not have a name
2049 * @see #setAccessibleName
2050 */
2051 public String getAccessibleName() {
2052 String name = accessibleName;
2053
2054 if (name == null) {
2055 name = (String)getClientProperty(AccessibleContext.ACCESSIBLE_NAME_PROPERTY);
2056 }
2057 if (name == null) {
2058 name = getTitle();
2059 }
2060 return name;
2061 }
2062
2063 /**
2064 * Get the role of this object.
2065 *
2066 * @return an instance of AccessibleRole describing the role of the
2067 * object
2068 * @see AccessibleRole
2069 */
2070 public AccessibleRole getAccessibleRole() {
2071 return AccessibleRole.INTERNAL_FRAME;
2072 }
2073
2074 /**
2075 * Gets the AccessibleValue associated with this object. In the
2076 * implementation of the Java Accessibility API for this class,
2077 * returns this object, which is responsible for implementing the
2078 * <code>AccessibleValue</code> interface on behalf of itself.
2079 *
2080 * @return this object
2081 */
2082 public AccessibleValue getAccessibleValue() {
2083 return this;
2084 }
2085
2086
2087 //
2088 // AccessibleValue methods
2089 //
2090
2091 /**
2092 * Get the value of this object as a Number.
2093 *
2094 * @return value of the object -- can be <code>null</code> if this object does not
2095 * have a value
2096 */
2097 public Number getCurrentAccessibleValue() {
2098 return Integer.valueOf(getLayer());
2099 }
2100
2101 /**
2102 * Set the value of this object as a Number.
2103 *
2104 * @return <code>true</code> if the value was set
2105 */
2106 public boolean setCurrentAccessibleValue(Number n) {
2107 // TIGER - 4422535
2108 if (n == null) {
2109 return false;
2110 }
2111 setLayer(Integer.valueOf(n.intValue()));
2112 return true;
2113 }
2114
2115 /**
2116 * Get the minimum value of this object as a Number.
2117 *
2118 * @return Minimum value of the object; <code>null</code> if this object does not
2119 * have a minimum value
2120 */
2121 public Number getMinimumAccessibleValue() {
2122 return Integer.MIN_VALUE;
2123 }
2124
2125 /**
2126 * Get the maximum value of this object as a Number.
2127 *
2128 * @return Maximum value of the object; <code>null</code> if this object does not
2129 * have a maximum value
2130 */
2131 public Number getMaximumAccessibleValue() {
2132 return Integer.MAX_VALUE;
2133 }
2134
2135 } // AccessibleJInternalFrame
2136
2137 /**
2138 * This component represents an iconified version of a
2139 * <code>JInternalFrame</code>.
2140 * This API should NOT BE USED by Swing applications, as it will go
2141 * away in future versions of Swing as its functionality is moved into
2142 * <code>JInternalFrame</code>. This class is public only so that
2143 * UI objects can display a desktop icon. If an application
2144 * wants to display a desktop icon, it should create a
2145 * <code>JInternalFrame</code> instance and iconify it.
2146 * <p>
2147 * <strong>Warning:</strong>
2148 * Serialized objects of this class will not be compatible with
2149 * future Swing releases. The current serialization support is
2150 * appropriate for short term storage or RMI between applications running
2151 * the same version of Swing. As of 1.4, support for long term storage
2152 * of all JavaBeans™
2153 * has been added to the <code>java.beans</code> package.
2154 * Please see {@link java.beans.XMLEncoder}.
2155 *
2156 * @author David Kloba
2157 */
2158 @SuppressWarnings("serial") // Same-version serialization only
2159 static public class JDesktopIcon extends JComponent implements Accessible
2160 {
2161 JInternalFrame internalFrame;
2162
2163 /**
2164 * Creates an icon for an internal frame.
2165 *
2166 * @param f the <code>JInternalFrame</code>
2167 * for which the icon is created
2168 */
2169 public JDesktopIcon(JInternalFrame f) {
2170 setVisible(false);
2171 setInternalFrame(f);
2172 updateUI();
2173 }
2174
2175 /**
2176 * Returns the look-and-feel object that renders this component.
2177 *
2178 * @return the <code>DesktopIconUI</code> object that renders
2179 * this component
2180 */
2181 public DesktopIconUI getUI() {
2182 return (DesktopIconUI)ui;
2183 }
2184
2185 /**
2186 * Sets the look-and-feel object that renders this component.
2187 *
2188 * @param ui the <code>DesktopIconUI</code> look-and-feel object
2189 * @see UIDefaults#getUI
2190 */
2191 public void setUI(DesktopIconUI ui) {
2192 super.setUI(ui);
2193 }
2194
2195 /**
2196 * Returns the <code>JInternalFrame</code> that this
2197 * <code>DesktopIcon</code> is associated with.
2198 *
2199 * @return the <code>JInternalFrame</code> with which this icon
2200 * is associated
2201 */
2202 public JInternalFrame getInternalFrame() {
2203 return internalFrame;
2204 }
2205
2206 /**
2207 * Sets the <code>JInternalFrame</code> with which this
2208 * <code>DesktopIcon</code> is associated.
2209 *
2210 * @param f the <code>JInternalFrame</code> with which this icon
2211 * is associated
2212 */
2213 public void setInternalFrame(JInternalFrame f) {
2214 internalFrame = f;
2215 }
2216
2217 /**
2218 * Convenience method to ask the icon for the <code>Desktop</code>
2219 * object it belongs to.
2220 *
2221 * @return the <code>JDesktopPane</code> that contains this
2222 * icon's internal frame, or <code>null</code> if none found
2223 */
2224 public JDesktopPane getDesktopPane() {
2225 if(getInternalFrame() != null)
2226 return getInternalFrame().getDesktopPane();
2227 return null;
2228 }
2229
2230 /**
2231 * Notification from the <code>UIManager</code> that the look and feel
2232 * has changed.
2233 * Replaces the current UI object with the latest version from the
2234 * <code>UIManager</code>.
2235 *
2236 * @see JComponent#updateUI
2237 */
2238 public void updateUI() {
2239 boolean hadUI = (ui != null);
2240 setUI((DesktopIconUI)UIManager.getUI(this));
2241 invalidate();
2242
2243 Dimension r = getPreferredSize();
2244 setSize(r.width, r.height);
2245
2246
2247 if (internalFrame != null && internalFrame.getUI() != null) { // don't do this if UI not created yet
2248 SwingUtilities.updateComponentTreeUI(internalFrame);
2249 }
2250 }
2251
2252 /* This method is called if updateUI was called on the associated
2253 * JInternalFrame. It's necessary to avoid infinite recursion.
2254 */
2255 void updateUIWhenHidden() {
2256 /* Update this UI and any associated internal frame */
2257 setUI((DesktopIconUI)UIManager.getUI(this));
2258
2259 Dimension r = getPreferredSize();
2260 setSize(r.width, r.height);
2261
2262 invalidate();
2263 Component[] children = getComponents();
2264 if (children != null) {
2265 for (Component child : children) {
2266 SwingUtilities.updateComponentTreeUI(child);
2267 }
2268 }
2269 }
2270
2271 /**
2272 * Returns the name of the look-and-feel
2273 * class that renders this component.
2274 *
2275 * @return the string "DesktopIconUI"
2276 * @see JComponent#getUIClassID
2277 * @see UIDefaults#getUI
2278 */
2279 public String getUIClassID() {
2280 return "DesktopIconUI";
2281 }
2282 ////////////////
2283 // Serialization support
2284 ////////////////
2285 private void writeObject(ObjectOutputStream s) throws IOException {
2286 s.defaultWriteObject();
2287 if (getUIClassID().equals("DesktopIconUI")) {
2288 byte count = JComponent.getWriteObjCounter(this);
2289 JComponent.setWriteObjCounter(this, --count);
2290 if (count == 0 && ui != null) {
2291 ui.installUI(this);
2292 }
2293 }
2294 }
2295
2296 /////////////////
2297 // Accessibility support
2298 ////////////////
2299
2300 /**
2301 * Gets the AccessibleContext associated with this JDesktopIcon.
2302 * For desktop icons, the AccessibleContext takes the form of an
2303 * AccessibleJDesktopIcon.
2304 * A new AccessibleJDesktopIcon instance is created if necessary.
2305 *
2306 * @return an AccessibleJDesktopIcon that serves as the
2307 * AccessibleContext of this JDesktopIcon
2308 */
2309 public AccessibleContext getAccessibleContext() {
2310 if (accessibleContext == null) {
2311 accessibleContext = new AccessibleJDesktopIcon();
2312 }
2313 return accessibleContext;
2314 }
2315
2316 /**
2317 * This class implements accessibility support for the
2318 * <code>JInternalFrame.JDesktopIcon</code> class. It provides an
2319 * implementation of the Java Accessibility API appropriate to
2320 * desktop icon user-interface elements.
2321 * <p>
2322 * <strong>Warning:</strong>
2323 * Serialized objects of this class will not be compatible with
2324 * future Swing releases. The current serialization support is
2325 * appropriate for short term storage or RMI between applications running
2326 * the same version of Swing. As of 1.4, support for long term storage
2327 * of all JavaBeans™
2328 * has been added to the <code>java.beans</code> package.
2329 * Please see {@link java.beans.XMLEncoder}.
2330 */
2331 @SuppressWarnings("serial") // Same-version serialization only
2332 protected class AccessibleJDesktopIcon extends AccessibleJComponent
2333 implements AccessibleValue {
2334
2335 /**
2336 * Gets the role of this object.
2337 *
2338 * @return an instance of AccessibleRole describing the role of the
2339 * object
2340 * @see AccessibleRole
2341 */
2342 public AccessibleRole getAccessibleRole() {
2343 return AccessibleRole.DESKTOP_ICON;
2344 }
2345
2346 /**
2347 * Gets the AccessibleValue associated with this object. In the
2348 * implementation of the Java Accessibility API for this class,
2349 * returns this object, which is responsible for implementing the
2350 * <code>AccessibleValue</code> interface on behalf of itself.
2351 *
2352 * @return this object
2353 */
2354 public AccessibleValue getAccessibleValue() {
2355 return this;
2356 }
2357
2358 //
2359 // AccessibleValue methods
2360 //
2361
2362 /**
2363 * Gets the value of this object as a <code>Number</code>.
2364 *
2365 * @return value of the object -- can be <code>null</code> if this object does not
2366 * have a value
2367 */
2368 public Number getCurrentAccessibleValue() {
2369 AccessibleContext a = JDesktopIcon.this.getInternalFrame().getAccessibleContext();
2370 AccessibleValue v = a.getAccessibleValue();
2371 if (v != null) {
2372 return v.getCurrentAccessibleValue();
2373 } else {
2374 return null;
2375 }
2376 }
2377
2378 /**
2379 * Sets the value of this object as a <code>Number</code>.
2380 *
2381 * @return <code>true</code> if the value was set
2382 */
2383 public boolean setCurrentAccessibleValue(Number n) {
2384 // TIGER - 4422535
2385 if (n == null) {
2386 return false;
2387 }
2388 AccessibleContext a = JDesktopIcon.this.getInternalFrame().getAccessibleContext();
2389 AccessibleValue v = a.getAccessibleValue();
2390 if (v != null) {
2391 return v.setCurrentAccessibleValue(n);
2392 } else {
2393 return false;
2394 }
2395 }
2396
2397 /**
2398 * Gets the minimum value of this object as a <code>Number</code>.
2399 *
2400 * @return minimum value of the object; <code>null</code> if this object does not
2401 * have a minimum value
2402 */
2403 public Number getMinimumAccessibleValue() {
2404 AccessibleContext a = JDesktopIcon.this.getInternalFrame().getAccessibleContext();
2405 if (a instanceof AccessibleValue) {
2406 return ((AccessibleValue)a).getMinimumAccessibleValue();
2407 } else {
2408 return null;
2409 }
2410 }
2411
2412 /**
2413 * Gets the maximum value of this object as a <code>Number</code>.
2414 *
2415 * @return maximum value of the object; <code>null</code> if this object does not
2416 * have a maximum value
2417 */
2418 public Number getMaximumAccessibleValue() {
2419 AccessibleContext a = JDesktopIcon.this.getInternalFrame().getAccessibleContext();
2420 if (a instanceof AccessibleValue) {
2421 return ((AccessibleValue)a).getMaximumAccessibleValue();
2422 } else {
2423 return null;
2424 }
2425 }
2426
2427 } // AccessibleJDesktopIcon
2428 }
2429 }