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 com.apple.laf;
27
28 import java.awt.*;
29 import java.awt.event.*;
30 import java.awt.peer.MenuComponentPeer;
31 import java.util.Hashtable;
32
33 import javax.swing.*;
34
35 import sun.awt.SunToolkit;
36 import sun.lwawt.LWToolkit;
37 import sun.lwawt.macosx.*;
38
39 @SuppressWarnings("serial") // JDK implementation class
40 final class ScreenMenu extends Menu
41 implements ContainerListener, ComponentListener,
42 ScreenMenuPropertyHandler {
43
44 static {
45 java.security.AccessController.doPrivileged(
46 new java.security.PrivilegedAction<Void>() {
47 public Void run() {
48 System.loadLibrary("awt");
49 return null;
50 }
51 });
52 }
53
54 // screen menu stuff
55 private static native long addMenuListeners(ScreenMenu listener, long nativeMenu);
56 private static native void removeMenuListeners(long modelPtr);
57
58 private transient long fModelPtr;
59
60 private final Hashtable<Component, MenuItem> fItems;
61 private final JMenu fInvoker;
62
63 private Component fLastMouseEventTarget;
64 private Rectangle fLastTargetRect;
65 private volatile Rectangle[] fItemBounds;
66
67 private ScreenMenuPropertyListener fPropertyListener;
68
69 // Array of child hashes used to see if we need to recreate the Menu.
70 private int childHashArray[];
71
72 ScreenMenu(final JMenu invoker) {
73 super(invoker.getText());
74 fInvoker = invoker;
75
76 int count = fInvoker.getMenuComponentCount();
77 if (count < 5) count = 5;
78 fItems = new Hashtable<Component, MenuItem>(count);
79 setEnabled(fInvoker.isEnabled());
80 updateItems();
81 }
82
83 /**
84 * Determine if we need to tear down the Menu and re-create it, since the contents may have changed in the Menu opened listener and
85 * we do not get notified of it, because EDT is busy in our code. We only need to update if the menu contents have changed in some
86 * way, such as the number of menu items, the text of the menuitems, icon, shortcut etc.
87 */
88 private static boolean needsUpdate(final Component items[], final int childHashArray[]) {
89 if (items == null || childHashArray == null) {
90 return true;
91 }
92 if (childHashArray.length != items.length) {
93 return true;
94 }
95 for (int i = 0; i < items.length; i++) {
96 final int hashCode = getHashCode(items[i]);
97 if (hashCode != childHashArray[i]) {
98 return true;
99 }
100 }
101 return false;
102 }
103
104 /**
105 * Used to recreate the AWT based Menu structure that implements the Screen Menu.
106 * Also computes hashcode and stores them so that we can compare them later in needsUpdate.
107 */
108 private void updateItems() {
109 final int count = fInvoker.getMenuComponentCount();
110 final Component[] items = fInvoker.getMenuComponents();
111 if (needsUpdate(items, childHashArray)) {
112 removeAll();
113 if (count <= 0) return;
114
115 childHashArray = new int[count];
116 for (int i = 0; i < count; i++) {
117 addItem(items[i]);
118 childHashArray[i] = getHashCode(items[i]);
119 }
120 }
121 }
122
123 /**
124 * Callback from JavaMenuUpdater.m -- called when menu first opens
125 */
126 public void invokeOpenLater() {
127 final JMenu invoker = fInvoker;
128 if (invoker == null) {
129 System.err.println("invoker is null!");
130 return;
131 }
132
133 try {
134 LWCToolkit.invokeAndWait(new Runnable() {
135 public void run() {
136 invoker.setSelected(true);
137 invoker.validate();
138 updateItems();
139 fItemBounds = new Rectangle[invoker.getMenuComponentCount()];
140 }
141 }, invoker);
142 } catch (final Exception e) {
143 System.err.println(e);
144 e.printStackTrace();
145 }
146 }
147
148 /**
149 * Callback from JavaMenuUpdater.m -- called when menu closes.
150 */
151 public void invokeMenuClosing() {
152 final JMenu invoker = fInvoker;
153 if (invoker == null) return;
154
155 try {
156 LWCToolkit.invokeAndWait(new Runnable() {
157 public void run() {
158 invoker.setSelected(false);
159 // Null out the tracking rectangles and the array.
160 if (fItemBounds != null) {
161 for (int i = 0; i < fItemBounds.length; i++) {
162 fItemBounds[i] = null;
163 }
164 }
165 fItemBounds = null;
166 }
167 }, invoker);
168 } catch (final Exception e) {
169 e.printStackTrace();
170 }
171 }
172
173 /**
174 * Callback from JavaMenuUpdater.m -- called when menu item is hilighted.
175 *
176 * @param inWhichItem The menu item selected by the user. -1 if mouse moves off the menu.
177 * @param itemRectTop
178 * @param itemRectLeft
179 * @param itemRectBottom
180 * @param itemRectRight Tracking rectangle coordinates.
181 */
182 public void handleItemTargeted(final int inWhichItem, final int itemRectTop, final int itemRectLeft, final int itemRectBottom, final int itemRectRight) {
183 if (fItemBounds == null || inWhichItem < 0 || inWhichItem > (fItemBounds.length - 1)) return;
184 final Rectangle itemRect = new Rectangle(itemRectLeft, itemRectTop, itemRectRight - itemRectLeft, itemRectBottom - itemRectTop);
185 fItemBounds[inWhichItem] = itemRect;
186 }
187
188 /**
189 * Callback from JavaMenuUpdater.m -- called when mouse event happens on the menu.
190 */
191 public void handleMouseEvent(final int kind, final int x, final int y, final int modifiers, final long when) {
192 if (kind == 0) return;
193 if (fItemBounds == null) return;
194
195 SunToolkit.executeOnEventHandlerThread(fInvoker, new Runnable() {
196 @Override
197 public void run() {
198 Component target = null;
199 Rectangle targetRect = null;
200 for (int i = 0; i < fItemBounds.length; i++) {
201 final Rectangle testRect = fItemBounds[i];
202 if (testRect != null) {
203 if (testRect.contains(x, y)) {
204 target = fInvoker.getMenuComponent(i);
205 targetRect = testRect;
206 break;
207 }
208 }
209 }
210 if (target == null && fLastMouseEventTarget == null) return;
211
212 // Send a mouseExited to the previously hilited item, if it wasn't 0.
213 if (target != fLastMouseEventTarget) {
214 if (fLastMouseEventTarget != null) {
215 LWToolkit.postEvent(new MouseEvent(fLastMouseEventTarget, MouseEvent.MOUSE_EXITED, when, modifiers, x - fLastTargetRect.x, y - fLastTargetRect.y, 0, false));
216 }
217 // Send a mouseEntered to the current hilited item, if it wasn't 0.
218 if (target != null) {
219 LWToolkit.postEvent(new MouseEvent(target, MouseEvent.MOUSE_ENTERED, when, modifiers, x - targetRect.x, y - targetRect.y, 0, false));
220 }
221 fLastMouseEventTarget = target;
222 fLastTargetRect = targetRect;
223 }
224 // Post a mouse event to the current item.
225 if (target == null) return;
226 LWToolkit.postEvent(new MouseEvent(target, kind, when, modifiers, x - targetRect.x, y - targetRect.y, 0, false));
227 }
228 });
229 }
230
231 @Override
232 public void addNotify() {
233 synchronized (getTreeLock()) {
234 super.addNotify();
235 if (fModelPtr == 0) {
236 fInvoker.addContainerListener(this);
237 fInvoker.addComponentListener(this);
238 fPropertyListener = new ScreenMenuPropertyListener(this);
239 fInvoker.addPropertyChangeListener(fPropertyListener);
240
241 final Icon icon = fInvoker.getIcon();
242 if (icon != null) {
243 setIcon(icon);
244 }
245
246 final String tooltipText = fInvoker.getToolTipText();
247 if (tooltipText != null) {
248 setToolTipText(tooltipText);
249 }
250 final MenuComponentPeer peer = getPeer();
251 if (peer instanceof CMenu) {
252 final CMenu menu = (CMenu) peer;
253 final long nativeMenu = menu.getNativeMenu();
254 fModelPtr = addMenuListeners(this, nativeMenu);
255 }
256 }
257 }
258 }
259
260 @Override
261 public void removeNotify() {
262 synchronized (getTreeLock()) {
263 // Call super so that the NSMenu has been removed, before we release
264 // the delegate in removeMenuListeners
265 super.removeNotify();
266 fItems.clear();
267 if (fModelPtr != 0) {
268 removeMenuListeners(fModelPtr);
269 fModelPtr = 0;
270 fInvoker.removeContainerListener(this);
271 fInvoker.removeComponentListener(this);
272 fInvoker.removePropertyChangeListener(fPropertyListener);
273 }
274 }
275 }
276
277 /**
278 * Invoked when a component has been added to the container.
279 */
280 @Override
281 public void componentAdded(final ContainerEvent e) {
282 addItem(e.getChild());
283 }
284
285 /**
286 * Invoked when a component has been removed from the container.
287 */
288 @Override
289 public void componentRemoved(final ContainerEvent e) {
290 final Component child = e.getChild();
291 final MenuItem sm = fItems.get(child);
292 if (sm == null) return;
293
294 remove(sm);
295 fItems.remove(sm);
296 }
297
298 /**
299 * Invoked when the component's size changes.
300 */
301 @Override
302 public void componentResized(final ComponentEvent e) {}
303
304 /**
305 * Invoked when the component's position changes.
306 */
307 @Override
308 public void componentMoved(final ComponentEvent e) {}
309
310 /**
311 * Invoked when the component has been made visible.
312 * See componentHidden - we should still have a MenuItem
313 * it just isn't inserted
314 */
315 @Override
316 public void componentShown(final ComponentEvent e) {
317 setVisible(true);
318 }
319
320 /**
321 * Invoked when the component has been made invisible.
322 * MenuComponent.setVisible does nothing,
323 * so we remove the ScreenMenuItem from the ScreenMenu
324 * but leave it in fItems
325 */
326 @Override
327 public void componentHidden(final ComponentEvent e) {
328 setVisible(false);
329 }
330
331 private void setVisible(final boolean b) {
332 // Tell our parent to add/remove us
333 final MenuContainer parent = getParent();
334
335 if (parent != null) {
336 if (parent instanceof ScreenMenu) {
337 final ScreenMenu sm = (ScreenMenu)parent;
338 sm.setChildVisible(fInvoker, b);
339 }
340 }
341 }
342
343 @Override
344 public void setChildVisible(final JMenuItem child, final boolean b) {
345 fItems.remove(child);
346 updateItems();
347 }
348
349 @Override
350 public void setAccelerator(final KeyStroke ks) {}
351
352 // only check and radio items can be indeterminate
353 @Override
354 public void setIndeterminate(boolean indeterminate) { }
355
356 @Override
357 public void setToolTipText(final String text) {
358 final MenuComponentPeer peer = getPeer();
359 if (!(peer instanceof CMenuItem)) return;
360
361 final CMenuItem cmi = (CMenuItem)peer;
362 cmi.setToolTipText(text);
363 }
364
365 @Override
366 public void setIcon(final Icon i) {
367 final MenuComponentPeer peer = getPeer();
368 if (!(peer instanceof CMenuItem)) return;
369
370 final CMenuItem cmi = (CMenuItem)peer;
371 Image img = null;
372
373 if (i != null) {
374 if (i.getIconWidth() > 0 && i.getIconHeight() > 0) {
375 img = AquaIcon.getImageForIcon(i);
376 }
377 }
378 cmi.setImage(img);
379 }
380
381
382 /**
383 * Gets a hashCode for a JMenu or JMenuItem or subclass so that we can compare for
384 * changes in the Menu.
385 */
386 private static int getHashCode(final Component m) {
387 int hashCode = m.hashCode();
388
389 if (m instanceof JMenuItem) {
390 final JMenuItem mi = (JMenuItem) m;
391
392 final String text = mi.getText();
393 if (text != null) hashCode ^= text.hashCode();
394
395 final Icon icon = mi.getIcon();
396 if (icon != null) hashCode ^= icon.hashCode();
397
398 final Icon disabledIcon = mi.getDisabledIcon();
399 if (disabledIcon != null) hashCode ^= disabledIcon.hashCode();
400
401 final Action action = mi.getAction();
402 if (action != null) hashCode ^= action.hashCode();
403
404 final KeyStroke ks = mi.getAccelerator();
405 if (ks != null) hashCode ^= ks.hashCode();
406
407 hashCode ^= Boolean.valueOf(mi.isVisible()).hashCode();
408 hashCode ^= Boolean.valueOf(mi.isEnabled()).hashCode();
409 hashCode ^= Boolean.valueOf(mi.isSelected()).hashCode();
410
411 } else if (m instanceof JSeparator) {
412 hashCode ^= "-".hashCode();
413 }
414
415 return hashCode;
416 }
417
418 private void addItem(final Component m) {
419 if (!m.isVisible()) return;
420 MenuItem sm = fItems.get(m);
421
422 if (sm == null) {
423 if (m instanceof JMenu) {
424 sm = new ScreenMenu((JMenu)m);
425 } else if (m instanceof JCheckBoxMenuItem) {
426 sm = new ScreenMenuItemCheckbox((JCheckBoxMenuItem)m);
427 } else if (m instanceof JRadioButtonMenuItem) {
428 sm = new ScreenMenuItemCheckbox((JRadioButtonMenuItem)m);
429 } else if (m instanceof JMenuItem) {
430 sm = new ScreenMenuItem((JMenuItem)m);
431 } else if (m instanceof JPopupMenu.Separator || m instanceof JSeparator) {
432 sm = new MenuItem("-"); // This is what java.awt.Menu.addSeparator does
433 }
434
435 // Only place the menu item in the hashtable if we just created it.
436 if (sm != null) {
437 fItems.put(m, sm);
438 }
439 }
440
441 if (sm != null) {
442 add(sm);
443 }
444 }
445 }