1 /*
2 * Copyright (c) 2011, 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 sun.lwawt;
27
28 import java.awt.*;
29 import java.awt.event.*;
30 import java.awt.peer.*;
31 import java.util.List;
32
33 import javax.swing.*;
34
35 import sun.awt.*;
36 import sun.java2d.*;
37 import sun.java2d.loops.Blit;
38 import sun.java2d.loops.CompositeType;
39 import sun.java2d.pipe.Region;
40 import sun.util.logging.PlatformLogger;
41
42 public class LWWindowPeer
43 extends LWContainerPeer<Window, JComponent>
44 implements FramePeer, DialogPeer, FullScreenCapable, DisplayChangedListener, PlatformEventNotifier
45 {
46 public enum PeerType {
47 SIMPLEWINDOW,
48 FRAME,
49 DIALOG,
50 EMBEDDED_FRAME,
51 VIEW_EMBEDDED_FRAME,
52 LW_FRAME
53 }
54
55 private static final PlatformLogger focusLog = PlatformLogger.getLogger("sun.lwawt.focus.LWWindowPeer");
56
57 private final PlatformWindow platformWindow;
58
59 private static final int MINIMUM_WIDTH = 1;
60 private static final int MINIMUM_HEIGHT = 1;
61
62 private Insets insets = new Insets(0, 0, 0, 0);
63
64 private GraphicsDevice graphicsDevice;
65 private GraphicsConfiguration graphicsConfig;
66
67 private SurfaceData surfaceData;
68 private final Object surfaceDataLock = new Object();
69
70 private volatile int windowState = Frame.NORMAL;
71
72 // check that the mouse is over the window
73 private volatile boolean isMouseOver = false;
74
75 // A peer where the last mouse event came to. Used by cursor manager to
76 // find the component under cursor
77 private static volatile LWComponentPeer<?, ?> lastCommonMouseEventPeer;
78
79 // A peer where the last mouse event came to. Used to generate
80 // MOUSE_ENTERED/EXITED notifications
81 private volatile LWComponentPeer<?, ?> lastMouseEventPeer;
82
83 // Peers where all dragged/released events should come to,
84 // depending on what mouse button is being dragged according to Cocoa
85 private static final LWComponentPeer<?, ?>[] mouseDownTarget = new LWComponentPeer<?, ?>[3];
86
87 // A bitmask that indicates what mouse buttons produce MOUSE_CLICKED events
88 // on MOUSE_RELEASE. Click events are only generated if there were no drag
89 // events between MOUSE_PRESSED and MOUSE_RELEASED for particular button
90 private static int mouseClickButtons = 0;
91
92 private volatile boolean isOpaque = true;
93
94 private static final Font DEFAULT_FONT = new Font("Lucida Grande", Font.PLAIN, 13);
95
96 private static LWWindowPeer grabbingWindow;
97
98 private volatile boolean skipNextFocusChange;
99
100 private static final Color nonOpaqueBackground = new Color(0, 0, 0, 0);
101
102 private volatile boolean textured;
103
104 private final PeerType peerType;
105
106 private final SecurityWarningWindow warningWindow;
107
108 /**
109 * Current modal blocker or null.
110 *
111 * Synchronization: peerTreeLock.
112 */
113 private LWWindowPeer blocker;
114
115 public LWWindowPeer(Window target, PlatformComponent platformComponent,
116 PlatformWindow platformWindow, PeerType peerType)
117 {
118 super(target, platformComponent);
119 this.platformWindow = platformWindow;
120 this.peerType = peerType;
121
122 Window owner = target.getOwner();
123 LWWindowPeer ownerPeer = owner == null ? null :
124 (LWWindowPeer) AWTAccessor.getComponentAccessor().getPeer(owner);
125 PlatformWindow ownerDelegate = (ownerPeer != null) ? ownerPeer.getPlatformWindow() : null;
126
127 // The delegate.initialize() needs a non-null GC on X11.
128 GraphicsConfiguration gc = getTarget().getGraphicsConfiguration();
129 synchronized (getStateLock()) {
130 // graphicsConfig should be updated according to the real window
131 // bounds when the window is shown, see 4868278
132 this.graphicsConfig = gc;
133 }
134
135 if (!target.isFontSet()) {
136 target.setFont(DEFAULT_FONT);
137 }
138
139 if (!target.isBackgroundSet()) {
140 target.setBackground(SystemColor.window);
141 } else {
142 // first we check if user provided alpha for background. This is
143 // similar to what Apple's Java do.
144 // Since JDK7 we should rely on setOpacity() only.
145 // this.opacity = c.getAlpha();
146 }
147
148 if (!target.isForegroundSet()) {
149 target.setForeground(SystemColor.windowText);
150 // we should not call setForeground because it will call a repaint
151 // which the peer may not be ready to do yet.
152 }
153
154 platformWindow.initialize(target, this, ownerDelegate);
155
156 // Init warning window(for applets)
157 SecurityWarningWindow warn = null;
158 if (target.getWarningString() != null) {
159 // accessSystemTray permission allows to display TrayIcon, TrayIcon tooltip
160 // and TrayIcon balloon windows without a warning window.
161 if (!AWTAccessor.getWindowAccessor().isTrayIconWindow(target)) {
162 LWToolkit toolkit = (LWToolkit)Toolkit.getDefaultToolkit();
163 warn = toolkit.createSecurityWarning(target, this);
164 }
165 }
166
167 warningWindow = warn;
168 }
169
170 @Override
171 void initializeImpl() {
172 super.initializeImpl();
173
174
175 if (getTarget() instanceof Frame) {
176 setTitle(((Frame) getTarget()).getTitle());
177 setState(((Frame) getTarget()).getExtendedState());
178 } else if (getTarget() instanceof Dialog) {
179 setTitle(((Dialog) getTarget()).getTitle());
180 }
181
182 updateAlwaysOnTopState();
183 updateMinimumSize();
184
185 final Shape shape = getTarget().getShape();
186 if (shape != null) {
187 applyShape(Region.getInstance(shape, null));
188 }
189
190 final float opacity = getTarget().getOpacity();
191 if (opacity < 1.0f) {
192 setOpacity(opacity);
193 }
194
195 setOpaque(getTarget().isOpaque());
196
197 updateInsets(platformWindow.getInsets());
198 if (getSurfaceData() == null) {
199 replaceSurfaceData(false);
200 }
201 activateDisplayListener();
202 }
203
204 // Just a helper method
205 @Override
206 public PlatformWindow getPlatformWindow() {
207 return platformWindow;
208 }
209
210 @Override
211 protected LWWindowPeer getWindowPeerOrSelf() {
212 return this;
213 }
214
215 // ---- PEER METHODS ---- //
216
217 @Override
218 protected void disposeImpl() {
219 deactivateDisplayListener();
220 SurfaceData oldData = getSurfaceData();
221 synchronized (surfaceDataLock){
222 surfaceData = null;
223 }
224 if (oldData != null) {
225 oldData.invalidate();
226 }
227 if (isGrabbing()) {
228 ungrab();
229 }
230 if (warningWindow != null) {
231 warningWindow.dispose();
232 }
233
234 platformWindow.dispose();
235 super.disposeImpl();
236 }
237
238 @Override
239 protected void setVisibleImpl(final boolean visible) {
240 if (!visible && warningWindow != null) {
241 warningWindow.setVisible(false, false);
242 }
243
244 super.setVisibleImpl(visible);
245 // TODO: update graphicsConfig, see 4868278
246 platformWindow.setVisible(visible);
247 if (isSimpleWindow()) {
248 KeyboardFocusManagerPeer kfmPeer = LWKeyboardFocusManagerPeer.getInstance();
249
250 if (visible) {
251 if (!getTarget().isAutoRequestFocus()) {
252 return;
253 } else {
254 requestWindowFocus(CausedFocusEvent.Cause.ACTIVATION);
255 }
256 // Focus the owner in case this window is focused.
257 } else if (kfmPeer.getCurrentFocusedWindow() == getTarget()) {
258 // Transfer focus to the owner.
259 LWWindowPeer owner = getOwnerFrameDialog(LWWindowPeer.this);
260 if (owner != null) {
261 owner.requestWindowFocus(CausedFocusEvent.Cause.ACTIVATION);
262 }
263 }
264 }
265 }
266
267 @Override
268 public final GraphicsConfiguration getGraphicsConfiguration() {
269 synchronized (getStateLock()) {
270 return graphicsConfig;
271 }
272 }
273
274 @Override
275 public boolean updateGraphicsData(GraphicsConfiguration gc) {
276 setGraphicsConfig(gc);
277 return false;
278 }
279
280 protected final Graphics getOnscreenGraphics(Color fg, Color bg, Font f) {
281 if (getSurfaceData() == null) {
282 return null;
283 }
284 if (fg == null) {
285 fg = SystemColor.windowText;
286 }
287 if (bg == null) {
288 bg = SystemColor.window;
289 }
290 if (f == null) {
291 f = DEFAULT_FONT;
292 }
293 return platformWindow.transformGraphics(new SunGraphics2D(getSurfaceData(), fg, bg, f));
294 }
295
296 @Override
297 public void setBounds(int x, int y, int w, int h, int op) {
298
299 if((op & NO_EMBEDDED_CHECK) == 0 && getPeerType() == PeerType.VIEW_EMBEDDED_FRAME) {
300 return;
301 }
302
303 if ((op & SET_CLIENT_SIZE) != 0) {
304 // SET_CLIENT_SIZE is only applicable to window peers, so handle it here
305 // instead of pulling 'insets' field up to LWComponentPeer
306 // no need to add insets since Window's notion of width and height includes insets.
307 op &= ~SET_CLIENT_SIZE;
308 op |= SET_SIZE;
309 }
310
311 // Don't post ComponentMoved/Resized and Paint events
312 // until we've got a notification from the delegate
313 Rectangle cb = constrainBounds(x, y, w, h);
314
315 Rectangle newBounds = new Rectangle(getBounds());
316 if ((op & (SET_LOCATION | SET_BOUNDS)) != 0) {
317 newBounds.x = cb.x;
318 newBounds.y = cb.y;
319 }
320 if ((op & (SET_SIZE | SET_BOUNDS)) != 0) {
321 newBounds.width = cb.width;
322 newBounds.height = cb.height;
323 }
324 // Native system could constraint bounds, so the peer wold be updated in the callback
325 platformWindow.setBounds(newBounds.x, newBounds.y, newBounds.width, newBounds.height);
326 }
327
328 public Rectangle constrainBounds(Rectangle bounds) {
329 return constrainBounds(bounds.x, bounds.y, bounds.width, bounds.height);
330 }
331
332 public Rectangle constrainBounds(int x, int y, int w, int h) {
333
334 if (w < MINIMUM_WIDTH) {
335 w = MINIMUM_WIDTH;
336 }
337
338 if (h < MINIMUM_HEIGHT) {
339 h = MINIMUM_HEIGHT;
340 }
341
342 final int maxW = getLWGC().getMaxTextureWidth();
343 final int maxH = getLWGC().getMaxTextureHeight();
344
345 if (w > maxW) {
346 w = maxW;
347 }
348 if (h > maxH) {
349 h = maxH;
350 }
351
352 return new Rectangle(x, y, w, h);
353 }
354
355 @Override
356 public Point getLocationOnScreen() {
357 return platformWindow.getLocationOnScreen();
358 }
359
360 /**
361 * Overridden from LWContainerPeer to return the correct insets.
362 * Insets are queried from the delegate and are kept up to date by
363 * requiering when needed (i.e. when the window geometry is changed).
364 */
365 @Override
366 public Insets getInsets() {
367 synchronized (getStateLock()) {
368 return insets;
369 }
370 }
371
372 @Override
373 public FontMetrics getFontMetrics(Font f) {
374 // TODO: check for "use platform metrics" settings
375 return platformWindow.getFontMetrics(f);
376 }
377
378 @Override
379 public void toFront() {
380 platformWindow.toFront();
381 }
382
383 @Override
384 public void toBack() {
385 platformWindow.toBack();
386 }
387
388 @Override
389 public void setZOrder(ComponentPeer above) {
390 throw new RuntimeException("not implemented");
391 }
392
393 @Override
394 public void updateAlwaysOnTopState() {
395 platformWindow.setAlwaysOnTop(getTarget().isAlwaysOnTop());
396 }
397
398 @Override
399 public void updateFocusableWindowState() {
400 platformWindow.updateFocusableWindowState();
401 }
402
403 @Override
404 public void setModalBlocked(Dialog blocker, boolean blocked) {
405 synchronized (getPeerTreeLock()) {
406 ComponentPeer peer = AWTAccessor.getComponentAccessor().getPeer(blocker);
407 if (blocked && (peer instanceof LWWindowPeer)) {
408 this.blocker = (LWWindowPeer) peer;
409 } else {
410 this.blocker = null;
411 }
412 }
413
414 platformWindow.setModalBlocked(blocked);
415 }
416
417 @Override
418 public void updateMinimumSize() {
419 final Dimension min;
420 if (getTarget().isMinimumSizeSet()) {
421 min = getTarget().getMinimumSize();
422 min.width = Math.max(min.width, MINIMUM_WIDTH);
423 min.height = Math.max(min.height, MINIMUM_HEIGHT);
424 } else {
425 min = new Dimension(MINIMUM_WIDTH, MINIMUM_HEIGHT);
426 }
427
428 final Dimension max;
429 if (getTarget().isMaximumSizeSet()) {
430 max = getTarget().getMaximumSize();
431 max.width = Math.min(max.width, getLWGC().getMaxTextureWidth());
432 max.height = Math.min(max.height, getLWGC().getMaxTextureHeight());
433 } else {
434 max = new Dimension(getLWGC().getMaxTextureWidth(),
435 getLWGC().getMaxTextureHeight());
436 }
437
438 platformWindow.setSizeConstraints(min.width, min.height, max.width, max.height);
439 }
440
441 @Override
442 public void updateIconImages() {
443 getPlatformWindow().updateIconImages();
444 }
445
446 @Override
447 public void setBackground(final Color c) {
448 super.setBackground(c);
449 updateOpaque();
450 }
451
452 @Override
453 public void setOpacity(float opacity) {
454 getPlatformWindow().setOpacity(opacity);
455 repaintPeer();
456 }
457
458 @Override
459 public final void setOpaque(final boolean isOpaque) {
460 if (this.isOpaque != isOpaque) {
461 this.isOpaque = isOpaque;
462 updateOpaque();
463 }
464 }
465
466 private void updateOpaque() {
467 getPlatformWindow().setOpaque(!isTranslucent());
468 replaceSurfaceData(false);
469 repaintPeer();
470 }
471
472 @Override
473 public void updateWindow() {
474 }
475
476 public final boolean isTextured() {
477 return textured;
478 }
479
480 public final void setTextured(final boolean isTextured) {
481 textured = isTextured;
482 }
483
484 @Override
485 public final boolean isTranslucent() {
486 synchronized (getStateLock()) {
487 /*
488 * Textured window is a special case of translucent window.
489 * The difference is only in nswindow background. So when we set
490 * texture property our peer became fully translucent. It doesn't
491 * fill background, create non opaque backbuffers and layer etc.
492 */
493 return !isOpaque || isShaped() || isTextured();
494 }
495 }
496
497 @Override
498 final void applyShapeImpl(final Region shape) {
499 super.applyShapeImpl(shape);
500 updateOpaque();
501 }
502
503 @Override
504 public void repositionSecurityWarning() {
505 if (warningWindow != null) {
506 AWTAccessor.ComponentAccessor compAccessor = AWTAccessor.getComponentAccessor();
507 Window target = getTarget();
508 int x = compAccessor.getX(target);
509 int y = compAccessor.getY(target);
510 int width = compAccessor.getWidth(target);
511 int height = compAccessor.getHeight(target);
512 warningWindow.reposition(x, y, width, height);
513 }
514 }
515
516 // ---- FRAME PEER METHODS ---- //
517
518 @Override // FramePeer and DialogPeer
519 public void setTitle(String title) {
520 platformWindow.setTitle(title == null ? "" : title);
521 }
522
523 @Override
524 public void setMenuBar(MenuBar mb) {
525 platformWindow.setMenuBar(mb);
526 }
527
528 @Override // FramePeer and DialogPeer
529 public void setResizable(boolean resizable) {
530 platformWindow.setResizable(resizable);
531 }
532
533 @Override
534 public void setState(int state) {
535 platformWindow.setWindowState(state);
536 }
537
538 @Override
539 public int getState() {
540 return windowState;
541 }
542
543 @Override
544 public void setMaximizedBounds(Rectangle bounds) {
545 // TODO: not implemented
546 }
547
548 @Override
549 public void setBoundsPrivate(int x, int y, int width, int height) {
550 setBounds(x, y, width, height, SET_BOUNDS | NO_EMBEDDED_CHECK);
551 }
552
553 @Override
554 public Rectangle getBoundsPrivate() {
555 throw new RuntimeException("not implemented");
556 }
557
558 // ---- DIALOG PEER METHODS ---- //
559
560 @Override
561 public void blockWindows(List<Window> windows) {
562 //TODO: LWX will probably need some collectJavaToplevels to speed this up
563 for (Window w : windows) {
564 WindowPeer wp =
565 (WindowPeer) AWTAccessor.getComponentAccessor().getPeer(w);
566 if (wp != null) {
567 wp.setModalBlocked((Dialog)getTarget(), true);
568 }
569 }
570 }
571
572 // ---- PEER NOTIFICATIONS ---- //
573
574 @Override
575 public void notifyIconify(boolean iconify) {
576 //The toplevel target is Frame and states are applicable to it.
577 //Otherwise, the target is Window and it don't have state property.
578 //Hopefully, no such events are posted in the queue so consider the
579 //target as Frame in all cases.
580
581 // REMIND: should we send it anyway if the state not changed since last
582 // time?
583 WindowEvent iconifyEvent = new WindowEvent(getTarget(),
584 iconify ? WindowEvent.WINDOW_ICONIFIED
585 : WindowEvent.WINDOW_DEICONIFIED);
586 postEvent(iconifyEvent);
587
588 int newWindowState = iconify ? Frame.ICONIFIED : Frame.NORMAL;
589 postWindowStateChangedEvent(newWindowState);
590
591 // REMIND: RepaintManager doesn't repaint iconified windows and
592 // hence ignores any repaint request during deiconification.
593 // So, we need to repaint window explicitly when it becomes normal.
594 if (!iconify) {
595 repaintPeer();
596 }
597 }
598
599 @Override
600 public void notifyZoom(boolean isZoomed) {
601 int newWindowState = isZoomed ? Frame.MAXIMIZED_BOTH : Frame.NORMAL;
602 postWindowStateChangedEvent(newWindowState);
603 }
604
605 /**
606 * Called by the {@code PlatformWindow} when any part of the window should
607 * be repainted.
608 */
609 @Override
610 public void notifyExpose(final Rectangle r) {
611 repaintPeer(r);
612 }
613
614 /**
615 * Called by the {@code PlatformWindow} when this window is moved/resized by
616 * user or window insets are changed. There's no notifyReshape() in
617 * LWComponentPeer as the only components which could be resized by user are
618 * top-level windows.
619 */
620 @Override
621 public void notifyReshape(int x, int y, int w, int h) {
622 Rectangle oldBounds = getBounds();
623 final boolean invalid = updateInsets(platformWindow.getInsets());
624 final boolean moved = (x != oldBounds.x) || (y != oldBounds.y);
625 final boolean resized = (w != oldBounds.width) || (h != oldBounds.height);
626
627 // Check if anything changed
628 if (!moved && !resized && !invalid) {
629 return;
630 }
631 // First, update peer's bounds
632 setBounds(x, y, w, h, SET_BOUNDS, false, false);
633
634 // Second, update the graphics config and surface data
635 final boolean isNewDevice = updateGraphicsDevice();
636 if (resized || isNewDevice) {
637 replaceSurfaceData();
638 updateMinimumSize();
639 }
640
641 // Third, COMPONENT_MOVED/COMPONENT_RESIZED/PAINT events
642 if (moved || invalid) {
643 handleMove(x, y, true);
644 }
645 if (resized || invalid || isNewDevice) {
646 handleResize(w, h, true);
647 repaintPeer();
648 }
649
650 repositionSecurityWarning();
651 }
652
653 private void clearBackground(final int w, final int h) {
654 final Graphics g = getOnscreenGraphics(getForeground(), getBackground(),
655 getFont());
656 if (g != null) {
657 try {
658 if (g instanceof Graphics2D) {
659 ((Graphics2D) g).setComposite(AlphaComposite.Src);
660 }
661 if (isTranslucent()) {
662 g.setColor(nonOpaqueBackground);
663 g.fillRect(0, 0, w, h);
664 }
665 if (!isTextured()) {
666 if (g instanceof SunGraphics2D) {
667 ((SunGraphics2D) g).constrain(0, 0, w, h, getRegion());
668 }
669 g.setColor(getBackground());
670 g.fillRect(0, 0, w, h);
671 }
672 } finally {
673 g.dispose();
674 }
675 }
676 }
677
678 @Override
679 public void notifyUpdateCursor() {
680 getLWToolkit().getCursorManager().updateCursorLater(this);
681 }
682
683 @Override
684 public void notifyActivation(boolean activation, LWWindowPeer opposite) {
685 Window oppositeWindow = (opposite == null)? null : opposite.getTarget();
686 changeFocusedWindow(activation, oppositeWindow);
687 }
688
689 // MouseDown in non-client area
690 @Override
691 public void notifyNCMouseDown() {
692 // Ungrab except for a click on a Dialog with the grabbing owner
693 if (grabbingWindow != null &&
694 !grabbingWindow.isOneOfOwnersOf(this))
695 {
696 grabbingWindow.ungrab();
697 }
698 }
699
700 // ---- EVENTS ---- //
701
702 /*
703 * Called by the delegate to dispatch the event to Java. Event
704 * coordinates are relative to non-client window are, i.e. the top-left
705 * point of the client area is (insets.top, insets.left).
706 */
707 @Override
708 public void notifyMouseEvent(int id, long when, int button,
709 int x, int y, int screenX, int screenY,
710 int modifiers, int clickCount, boolean popupTrigger,
711 byte[] bdata)
712 {
713 // TODO: fill "bdata" member of AWTEvent
714 Rectangle r = getBounds();
715 // findPeerAt() expects parent coordinates
716 LWComponentPeer<?, ?> targetPeer = findPeerAt(r.x + x, r.y + y);
717
718 if (id == MouseEvent.MOUSE_EXITED) {
719 isMouseOver = false;
720 if (lastMouseEventPeer != null) {
721 if (lastMouseEventPeer.isEnabled()) {
722 Point lp = lastMouseEventPeer.windowToLocal(x, y,
723 this);
724 Component target = lastMouseEventPeer.getTarget();
725 postMouseExitedEvent(target, when, modifiers, lp,
726 screenX, screenY, clickCount, popupTrigger, button);
727 }
728
729 // Sometimes we may get MOUSE_EXITED after lastCommonMouseEventPeer is switched
730 // to a peer from another window. So we must first check if this peer is
731 // the same as lastWindowPeer
732 if (lastCommonMouseEventPeer != null && lastCommonMouseEventPeer.getWindowPeerOrSelf() == this) {
733 lastCommonMouseEventPeer = null;
734 }
735 lastMouseEventPeer = null;
736 }
737 } else if(id == MouseEvent.MOUSE_ENTERED) {
738 isMouseOver = true;
739 if (targetPeer != null) {
740 if (targetPeer.isEnabled()) {
741 Point lp = targetPeer.windowToLocal(x, y, this);
742 Component target = targetPeer.getTarget();
743 postMouseEnteredEvent(target, when, modifiers, lp,
744 screenX, screenY, clickCount, popupTrigger, button);
745 }
746 lastCommonMouseEventPeer = targetPeer;
747 lastMouseEventPeer = targetPeer;
748 }
749 } else {
750 PlatformWindow topmostPlatforWindow =
751 platformWindow.getTopmostPlatformWindowUnderMouse();
752
753 LWWindowPeer topmostWindowPeer =
754 topmostPlatforWindow != null ? topmostPlatforWindow.getPeer() : null;
755
756 // topmostWindowPeer == null condition is added for the backward
757 // compatibility with applets. It can be removed when the
758 // getTopmostPlatformWindowUnderMouse() method will be properly
759 // implemented in CPlatformEmbeddedFrame class
760 if (topmostWindowPeer == this || topmostWindowPeer == null) {
761 generateMouseEnterExitEventsForComponents(when, button, x, y,
762 screenX, screenY, modifiers, clickCount, popupTrigger,
763 targetPeer);
764 } else {
765 LWComponentPeer<?, ?> topmostTargetPeer =
766 topmostWindowPeer != null ? topmostWindowPeer.findPeerAt(r.x + x, r.y + y) : null;
767 topmostWindowPeer.generateMouseEnterExitEventsForComponents(when, button, x, y,
768 screenX, screenY, modifiers, clickCount, popupTrigger,
769 topmostTargetPeer);
770 }
771
772 // TODO: fill "bdata" member of AWTEvent
773
774 int eventButtonMask = (button > 0)? MouseEvent.getMaskForButton(button) : 0;
775 int otherButtonsPressed = modifiers & ~eventButtonMask;
776
777 // For pressed/dragged/released events OS X treats other
778 // mouse buttons as if they were BUTTON2, so we do the same
779 int targetIdx = (button > 3) ? MouseEvent.BUTTON2 - 1 : button - 1;
780
781 // MOUSE_ENTERED/EXITED are generated for the components strictly under
782 // mouse even when dragging. That's why we first update lastMouseEventPeer
783 // based on initial targetPeer value and only then recalculate targetPeer
784 // for MOUSE_DRAGGED/RELEASED events
785 if (id == MouseEvent.MOUSE_PRESSED) {
786
787 // Ungrab only if this window is not an owned window of the grabbing one.
788 if (!isGrabbing() && grabbingWindow != null &&
789 !grabbingWindow.isOneOfOwnersOf(this))
790 {
791 grabbingWindow.ungrab();
792 }
793 if (otherButtonsPressed == 0) {
794 mouseClickButtons = eventButtonMask;
795 } else {
796 mouseClickButtons |= eventButtonMask;
797 }
798
799 // The window should be focused on mouse click. If it gets activated by the native platform,
800 // this request will be no op. It will take effect when:
801 // 1. A simple not focused window is clicked.
802 // 2. An active but not focused owner frame/dialog is clicked.
803 // The mouse event then will trigger a focus request "in window" to the component, so the window
804 // should gain focus before.
805 requestWindowFocus(CausedFocusEvent.Cause.MOUSE_EVENT);
806
807 mouseDownTarget[targetIdx] = targetPeer;
808 } else if (id == MouseEvent.MOUSE_DRAGGED) {
809 // Cocoa dragged event has the information about which mouse
810 // button is being dragged. Use it to determine the peer that
811 // should receive the dragged event.
812 targetPeer = mouseDownTarget[targetIdx];
813 mouseClickButtons &= ~modifiers;
814 } else if (id == MouseEvent.MOUSE_RELEASED) {
815 // TODO: currently, mouse released event goes to the same component
816 // that received corresponding mouse pressed event. For most cases,
817 // it's OK, however, we need to make sure that our behavior is consistent
818 // with 1.6 for cases where component in question have been
819 // hidden/removed in between of mouse pressed/released events.
820 targetPeer = mouseDownTarget[targetIdx];
821
822 if ((modifiers & eventButtonMask) == 0) {
823 mouseDownTarget[targetIdx] = null;
824 }
825
826 // mouseClickButtons is updated below, after MOUSE_CLICK is sent
827 }
828
829 if (targetPeer == null) {
830 //TODO This can happen if this window is invisible. this is correct behavior in this case?
831 targetPeer = this;
832 }
833
834
835 Point lp = targetPeer.windowToLocal(x, y, this);
836 if (targetPeer.isEnabled()) {
837 MouseEvent event = new MouseEvent(targetPeer.getTarget(), id,
838 when, modifiers, lp.x, lp.y,
839 screenX, screenY, clickCount,
840 popupTrigger, button);
841 postEvent(event);
842 }
843
844 if (id == MouseEvent.MOUSE_RELEASED) {
845 if ((mouseClickButtons & eventButtonMask) != 0
846 && targetPeer.isEnabled()) {
847 postEvent(new MouseEvent(targetPeer.getTarget(),
848 MouseEvent.MOUSE_CLICKED,
849 when, modifiers,
850 lp.x, lp.y, screenX, screenY,
851 clickCount, popupTrigger, button));
852 }
853 mouseClickButtons &= ~eventButtonMask;
854 }
855 }
856 notifyUpdateCursor();
857 }
858
859 private void generateMouseEnterExitEventsForComponents(long when,
860 int button, int x, int y, int screenX, int screenY,
861 int modifiers, int clickCount, boolean popupTrigger,
862 final LWComponentPeer<?, ?> targetPeer) {
863
864 if (!isMouseOver || targetPeer == lastMouseEventPeer) {
865 return;
866 }
867
868 // Generate Mouse Exit for components
869 if (lastMouseEventPeer != null && lastMouseEventPeer.isEnabled()) {
870 Point oldp = lastMouseEventPeer.windowToLocal(x, y, this);
871 Component target = lastMouseEventPeer.getTarget();
872 postMouseExitedEvent(target, when, modifiers, oldp, screenX, screenY,
873 clickCount, popupTrigger, button);
874 }
875 lastCommonMouseEventPeer = targetPeer;
876 lastMouseEventPeer = targetPeer;
877
878 // Generate Mouse Enter for components
879 if (targetPeer != null && targetPeer.isEnabled()) {
880 Point newp = targetPeer.windowToLocal(x, y, this);
881 Component target = targetPeer.getTarget();
882 postMouseEnteredEvent(target, when, modifiers, newp, screenX, screenY, clickCount, popupTrigger, button);
883 }
884 }
885
886 private void postMouseEnteredEvent(Component target, long when, int modifiers,
887 Point loc, int xAbs, int yAbs,
888 int clickCount, boolean popupTrigger, int button) {
889
890 updateSecurityWarningVisibility();
891
892 postEvent(new MouseEvent(target,
893 MouseEvent.MOUSE_ENTERED,
894 when, modifiers,
895 loc.x, loc.y, xAbs, yAbs,
896 clickCount, popupTrigger, button));
897 }
898
899 private void postMouseExitedEvent(Component target, long when, int modifiers,
900 Point loc, int xAbs, int yAbs,
901 int clickCount, boolean popupTrigger, int button) {
902
903 updateSecurityWarningVisibility();
904
905 postEvent(new MouseEvent(target,
906 MouseEvent.MOUSE_EXITED,
907 when, modifiers,
908 loc.x, loc.y, xAbs, yAbs,
909 clickCount, popupTrigger, button));
910 }
911
912 @Override
913 public void notifyMouseWheelEvent(long when, int x, int y, int modifiers,
914 int scrollType, int scrollAmount,
915 int wheelRotation, double preciseWheelRotation,
916 byte[] bdata)
917 {
918 // TODO: could we just use the last mouse event target here?
919 Rectangle r = getBounds();
920 // findPeerAt() expects parent coordinates
921 final LWComponentPeer<?, ?> targetPeer = findPeerAt(r.x + x, r.y + y);
922 if (targetPeer == null || !targetPeer.isEnabled()) {
923 return;
924 }
925
926 Point lp = targetPeer.windowToLocal(x, y, this);
927 // TODO: fill "bdata" member of AWTEvent
928 // TODO: screenX/screenY
929 postEvent(new MouseWheelEvent(targetPeer.getTarget(),
930 MouseEvent.MOUSE_WHEEL,
931 when, modifiers,
932 lp.x, lp.y,
933 0, 0, /* screenX, Y */
934 0 /* clickCount */, false /* popupTrigger */,
935 scrollType, scrollAmount,
936 wheelRotation, preciseWheelRotation));
937 }
938
939 /*
940 * Called by the delegate when a key is pressed.
941 */
942 @Override
943 public void notifyKeyEvent(int id, long when, int modifiers,
944 int keyCode, char keyChar, int keyLocation)
945 {
946 LWKeyboardFocusManagerPeer kfmPeer = LWKeyboardFocusManagerPeer.getInstance();
947 Component focusOwner = kfmPeer.getCurrentFocusOwner();
948
949 if (focusOwner == null) {
950 focusOwner = kfmPeer.getCurrentFocusedWindow();
951 if (focusOwner == null) {
952 focusOwner = this.getTarget();
953 }
954 }
955
956 KeyEvent keyEvent = new KeyEvent(focusOwner, id, when, modifiers,
957 keyCode, keyChar, keyLocation);
958 AWTAccessor.getKeyEventAccessor().setExtendedKeyCode(keyEvent,
959 (keyChar == KeyEvent.CHAR_UNDEFINED) ? keyCode
960 : ExtendedKeyCodes.getExtendedKeyCodeForChar(keyChar));
961 postEvent(keyEvent);
962 }
963
964 // ---- UTILITY METHODS ---- //
965
966 private void activateDisplayListener() {
967 final GraphicsEnvironment ge =
968 GraphicsEnvironment.getLocalGraphicsEnvironment();
969 ((SunGraphicsEnvironment) ge).addDisplayChangedListener(this);
970 }
971
972 private void deactivateDisplayListener() {
973 final GraphicsEnvironment ge =
974 GraphicsEnvironment.getLocalGraphicsEnvironment();
975 ((SunGraphicsEnvironment) ge).removeDisplayChangedListener(this);
976 }
977
978 private void postWindowStateChangedEvent(int newWindowState) {
979 if (getTarget() instanceof Frame) {
980 AWTAccessor.getFrameAccessor().setExtendedState(
981 (Frame)getTarget(), newWindowState);
982 }
983
984 WindowEvent stateChangedEvent = new WindowEvent(getTarget(),
985 WindowEvent.WINDOW_STATE_CHANGED,
986 windowState, newWindowState);
987 postEvent(stateChangedEvent);
988 windowState = newWindowState;
989
990 updateSecurityWarningVisibility();
991 }
992
993 private static int getGraphicsConfigScreen(GraphicsConfiguration gc) {
994 // TODO: this method can be implemented in a more
995 // efficient way by forwarding to the delegate
996 GraphicsDevice gd = gc.getDevice();
997 GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
998 GraphicsDevice[] gds = ge.getScreenDevices();
999 for (int i = 0; i < gds.length; i++) {
1000 if (gds[i] == gd) {
1001 return i;
1002 }
1003 }
1004 // Should never happen if gc is a screen device config
1005 return 0;
1006 }
1007
1008 /*
1009 * This method is called when window's graphics config is changed from
1010 * the app code (e.g. when the window is made non-opaque) or when
1011 * the window is moved to another screen by user.
1012 *
1013 * Returns true if the graphics config has been changed, false otherwise.
1014 */
1015 private boolean setGraphicsConfig(GraphicsConfiguration gc) {
1016 synchronized (getStateLock()) {
1017 if (graphicsConfig == gc) {
1018 return false;
1019 }
1020 // If window's graphics config is changed from the app code, the
1021 // config correspond to the same device as before; when the window
1022 // is moved by user, graphicsDevice is updated in notifyReshape().
1023 // In either case, there's nothing to do with screenOn here
1024 graphicsConfig = gc;
1025 }
1026 // SurfaceData is replaced later in updateGraphicsData()
1027 return true;
1028 }
1029
1030 /**
1031 * Returns true if the GraphicsDevice has been changed, false otherwise.
1032 */
1033 public boolean updateGraphicsDevice() {
1034 GraphicsDevice newGraphicsDevice = platformWindow.getGraphicsDevice();
1035 synchronized (getStateLock()) {
1036 if (graphicsDevice == newGraphicsDevice) {
1037 return false;
1038 }
1039 graphicsDevice = newGraphicsDevice;
1040 }
1041
1042 final GraphicsConfiguration newGC = newGraphicsDevice.getDefaultConfiguration();
1043
1044 if (!setGraphicsConfig(newGC)) return false;
1045
1046 SunToolkit.executeOnEventHandlerThread(getTarget(), new Runnable() {
1047 public void run() {
1048 AWTAccessor.getComponentAccessor().setGraphicsConfiguration(getTarget(), newGC);
1049 }
1050 });
1051 return true;
1052 }
1053
1054 @Override
1055 public final void displayChanged() {
1056 if (updateGraphicsDevice()) {
1057 updateMinimumSize();
1058 }
1059 // Replace surface unconditionally, because internal state of the
1060 // GraphicsDevice could be changed.
1061 replaceSurfaceData();
1062 repaintPeer();
1063 }
1064
1065 @Override
1066 public final void paletteChanged() {
1067 // components do not need to react to this event.
1068 }
1069
1070 /*
1071 * May be called by delegate to provide SD to Java2D code.
1072 */
1073 public SurfaceData getSurfaceData() {
1074 synchronized (surfaceDataLock) {
1075 return surfaceData;
1076 }
1077 }
1078
1079 private void replaceSurfaceData() {
1080 replaceSurfaceData(true);
1081 }
1082
1083 private void replaceSurfaceData(final boolean blit) {
1084 synchronized (surfaceDataLock) {
1085 final SurfaceData oldData = getSurfaceData();
1086 surfaceData = platformWindow.replaceSurfaceData();
1087 final Rectangle size = getSize();
1088 if (getSurfaceData() != null && oldData != getSurfaceData()) {
1089 clearBackground(size.width, size.height);
1090 }
1091
1092 if (blit) {
1093 blitSurfaceData(oldData, getSurfaceData());
1094 }
1095
1096 if (oldData != null && oldData != getSurfaceData()) {
1097 // TODO: drop oldData for D3D/WGL pipelines
1098 // This can only happen when this peer is being created
1099 oldData.flush();
1100 }
1101 }
1102 flushOnscreenGraphics();
1103 }
1104
1105 private void blitSurfaceData(final SurfaceData src, final SurfaceData dst) {
1106 //TODO blit. proof-of-concept
1107 if (src != dst && src != null && dst != null
1108 && !(dst instanceof NullSurfaceData)
1109 && !(src instanceof NullSurfaceData)
1110 && src.getSurfaceType().equals(dst.getSurfaceType())
1111 && src.getDefaultScale() == dst.getDefaultScale()) {
1112 final Rectangle size = src.getBounds();
1113 final Blit blit = Blit.locate(src.getSurfaceType(),
1114 CompositeType.Src,
1115 dst.getSurfaceType());
1116 if (blit != null) {
1117 blit.Blit(src, dst, AlphaComposite.Src, null, 0, 0, 0, 0,
1118 size.width, size.height);
1119 }
1120 }
1121 }
1122
1123 /**
1124 * Request the window insets from the delegate and compares it with the
1125 * current one. This method is mostly called by the delegate, e.g. when the
1126 * window state is changed and insets should be recalculated.
1127 * <p/>
1128 * This method may be called on the toolkit thread.
1129 */
1130 public final boolean updateInsets(final Insets newInsets) {
1131 synchronized (getStateLock()) {
1132 if (insets.equals(newInsets)) {
1133 return false;
1134 }
1135 insets = newInsets;
1136 }
1137 return true;
1138 }
1139
1140 public static LWWindowPeer getWindowUnderCursor() {
1141 return lastCommonMouseEventPeer != null ? lastCommonMouseEventPeer.getWindowPeerOrSelf() : null;
1142 }
1143
1144 public static LWComponentPeer<?, ?> getPeerUnderCursor() {
1145 return lastCommonMouseEventPeer;
1146 }
1147
1148 /*
1149 * Requests platform to set native focus on a frame/dialog.
1150 * In case of a simple window, triggers appropriate java focus change.
1151 */
1152 public boolean requestWindowFocus(CausedFocusEvent.Cause cause) {
1153 if (focusLog.isLoggable(PlatformLogger.Level.FINE)) {
1154 focusLog.fine("requesting native focus to " + this);
1155 }
1156
1157 if (!focusAllowedFor()) {
1158 focusLog.fine("focus is not allowed");
1159 return false;
1160 }
1161
1162 if (platformWindow.rejectFocusRequest(cause)) {
1163 return false;
1164 }
1165
1166 AppContext targetAppContext = AWTAccessor.getComponentAccessor().getAppContext(getTarget());
1167 KeyboardFocusManager kfm = AWTAccessor.getKeyboardFocusManagerAccessor()
1168 .getCurrentKeyboardFocusManager(targetAppContext);
1169 Window currentActive = kfm.getActiveWindow();
1170
1171
1172 Window opposite = LWKeyboardFocusManagerPeer.getInstance().
1173 getCurrentFocusedWindow();
1174
1175 // Make the owner active window.
1176 if (isSimpleWindow()) {
1177 LWWindowPeer owner = getOwnerFrameDialog(this);
1178
1179 // If owner is not natively active, request native
1180 // activation on it w/o sending events up to java.
1181 if (owner != null && !owner.platformWindow.isActive()) {
1182 if (focusLog.isLoggable(PlatformLogger.Level.FINE)) {
1183 focusLog.fine("requesting native focus to the owner " + owner);
1184 }
1185 LWWindowPeer currentActivePeer = currentActive == null ? null :
1186 (LWWindowPeer) AWTAccessor.getComponentAccessor().getPeer(
1187 currentActive);
1188
1189 // Ensure the opposite is natively active and suppress sending events.
1190 if (currentActivePeer != null && currentActivePeer.platformWindow.isActive()) {
1191 if (focusLog.isLoggable(PlatformLogger.Level.FINE)) {
1192 focusLog.fine("the opposite is " + currentActivePeer);
1193 }
1194 currentActivePeer.skipNextFocusChange = true;
1195 }
1196 owner.skipNextFocusChange = true;
1197
1198 owner.platformWindow.requestWindowFocus();
1199 }
1200
1201 // DKFM will synthesize all the focus/activation events correctly.
1202 changeFocusedWindow(true, opposite);
1203 return true;
1204
1205 // In case the toplevel is active but not focused, change focus directly,
1206 // as requesting native focus on it will not have effect.
1207 } else if (getTarget() == currentActive && !getTarget().hasFocus()) {
1208
1209 changeFocusedWindow(true, opposite);
1210 return true;
1211 }
1212
1213 return platformWindow.requestWindowFocus();
1214 }
1215
1216 protected boolean focusAllowedFor() {
1217 Window window = getTarget();
1218 // TODO: check if modal blocked
1219 return window.isVisible() && window.isEnabled() && isFocusableWindow();
1220 }
1221
1222 private boolean isFocusableWindow() {
1223 boolean focusable = getTarget().isFocusableWindow();
1224 if (isSimpleWindow()) {
1225 LWWindowPeer ownerPeer = getOwnerFrameDialog(this);
1226 if (ownerPeer == null) {
1227 return false;
1228 }
1229 return focusable && ownerPeer.getTarget().isFocusableWindow();
1230 }
1231 return focusable;
1232 }
1233
1234 public boolean isSimpleWindow() {
1235 Window window = getTarget();
1236 return !(window instanceof Dialog || window instanceof Frame);
1237 }
1238
1239 @Override
1240 public void emulateActivation(boolean activate) {
1241 changeFocusedWindow(activate, null);
1242 }
1243
1244 private boolean isOneOfOwnersOf(LWWindowPeer peer) {
1245 Window owner = (peer != null ? peer.getTarget().getOwner() : null);
1246 while (owner != null) {
1247 if ((LWWindowPeer)owner.getPeer() == this) {
1248 return true;
1249 }
1250 owner = owner.getOwner();
1251 }
1252 return false;
1253 }
1254
1255 /*
1256 * Changes focused window on java level.
1257 */
1258 protected void changeFocusedWindow(boolean becomesFocused, Window opposite) {
1259 if (focusLog.isLoggable(PlatformLogger.Level.FINE)) {
1260 focusLog.fine((becomesFocused?"gaining":"loosing") + " focus window: " + this);
1261 }
1262 if (skipNextFocusChange) {
1263 focusLog.fine("skipping focus change");
1264 skipNextFocusChange = false;
1265 return;
1266 }
1267 if (!isFocusableWindow() && becomesFocused) {
1268 focusLog.fine("the window is not focusable");
1269 return;
1270 }
1271 if (becomesFocused) {
1272 synchronized (getPeerTreeLock()) {
1273 if (blocker != null) {
1274 if (focusLog.isLoggable(PlatformLogger.Level.FINEST)) {
1275 focusLog.finest("the window is blocked by " + blocker);
1276 }
1277 return;
1278 }
1279 }
1280 }
1281
1282 // Note, the method is not called:
1283 // - when the opposite (gaining focus) window is an owned/owner window.
1284 // - for a simple window in any case.
1285 if (!becomesFocused &&
1286 (isGrabbing() || this.isOneOfOwnersOf(grabbingWindow)))
1287 {
1288 if (focusLog.isLoggable(PlatformLogger.Level.FINE)) {
1289 focusLog.fine("ungrabbing on " + grabbingWindow);
1290 }
1291 // ungrab a simple window if its owner looses activation.
1292 grabbingWindow.ungrab();
1293 }
1294
1295 KeyboardFocusManagerPeer kfmPeer = LWKeyboardFocusManagerPeer.getInstance();
1296 kfmPeer.setCurrentFocusedWindow(becomesFocused ? getTarget() : null);
1297
1298 int eventID = becomesFocused ? WindowEvent.WINDOW_GAINED_FOCUS : WindowEvent.WINDOW_LOST_FOCUS;
1299 WindowEvent windowEvent = new TimedWindowEvent(getTarget(), eventID, opposite, System.currentTimeMillis());
1300
1301 // TODO: wrap in SequencedEvent
1302 postEvent(windowEvent);
1303 }
1304
1305 /*
1306 * Retrieves the owner of the peer.
1307 * Note: this method returns the owner which can be activated, (i.e. the instance
1308 * of Frame or Dialog may be returned).
1309 */
1310 static LWWindowPeer getOwnerFrameDialog(LWWindowPeer peer) {
1311 Window owner = (peer != null ? peer.getTarget().getOwner() : null);
1312 while (owner != null && !(owner instanceof Frame || owner instanceof Dialog)) {
1313 owner = owner.getOwner();
1314 }
1315 return owner == null ? null :
1316 (LWWindowPeer) AWTAccessor.getComponentAccessor().getPeer(owner);
1317 }
1318
1319 /**
1320 * Returns the foremost modal blocker of this window, or null.
1321 */
1322 public LWWindowPeer getBlocker() {
1323 synchronized (getPeerTreeLock()) {
1324 LWWindowPeer blocker = this.blocker;
1325 if (blocker == null) {
1326 return null;
1327 }
1328 while (blocker.blocker != null) {
1329 blocker = blocker.blocker;
1330 }
1331 return blocker;
1332 }
1333 }
1334
1335 @Override
1336 public void enterFullScreenMode() {
1337 platformWindow.enterFullScreenMode();
1338 updateSecurityWarningVisibility();
1339 }
1340
1341 @Override
1342 public void exitFullScreenMode() {
1343 platformWindow.exitFullScreenMode();
1344 updateSecurityWarningVisibility();
1345 }
1346
1347 public long getLayerPtr() {
1348 return getPlatformWindow().getLayerPtr();
1349 }
1350
1351 void grab() {
1352 if (grabbingWindow != null && !isGrabbing()) {
1353 grabbingWindow.ungrab();
1354 }
1355 grabbingWindow = this;
1356 }
1357
1358 final void ungrab(boolean doPost) {
1359 if (isGrabbing()) {
1360 grabbingWindow = null;
1361 if (doPost) {
1362 postEvent(new UngrabEvent(getTarget()));
1363 }
1364 }
1365 }
1366
1367 void ungrab() {
1368 ungrab(true);
1369 }
1370
1371 private boolean isGrabbing() {
1372 return this == grabbingWindow;
1373 }
1374
1375 public PeerType getPeerType() {
1376 return peerType;
1377 }
1378
1379 public void updateSecurityWarningVisibility() {
1380 if (warningWindow == null) {
1381 return;
1382 }
1383
1384 if (!isVisible()) {
1385 return; // The warning window should already be hidden.
1386 }
1387
1388 boolean show = false;
1389
1390 if (!platformWindow.isFullScreenMode()) {
1391 if (isVisible()) {
1392 if (LWKeyboardFocusManagerPeer.getInstance().getCurrentFocusedWindow() ==
1393 getTarget()) {
1394 show = true;
1395 }
1396
1397 if (platformWindow.isUnderMouse() || warningWindow.isUnderMouse()) {
1398 show = true;
1399 }
1400 }
1401 }
1402
1403 warningWindow.setVisible(show, true);
1404 }
1405
1406 @Override
1407 public String toString() {
1408 return super.toString() + " [target is " + getTarget() + "]";
1409 }
1410 }