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 @SuppressWarnings("deprecation") 233 public void addNotify() { 234 synchronized (getTreeLock()) { 235 super.addNotify(); 236 if (fModelPtr == 0) { 237 fInvoker.addContainerListener(this); 238 fInvoker.addComponentListener(this); 239 fPropertyListener = new ScreenMenuPropertyListener(this); 240 fInvoker.addPropertyChangeListener(fPropertyListener); 241 242 final Icon icon = fInvoker.getIcon(); 243 if (icon != null) { 244 setIcon(icon); 245 } 246 247 final String tooltipText = fInvoker.getToolTipText(); 248 if (tooltipText != null) { 249 setToolTipText(tooltipText); 250 } 251 final MenuComponentPeer peer = getPeer(); 252 if (peer instanceof CMenu) { 253 final CMenu menu = (CMenu) peer; 254 final long nativeMenu = menu.getNativeMenu(); 255 fModelPtr = addMenuListeners(this, nativeMenu); 256 } 257 } 258 } 259 } 260 261 @Override 262 public void removeNotify() { 263 synchronized (getTreeLock()) { 264 // Call super so that the NSMenu has been removed, before we release 265 // the delegate in removeMenuListeners 266 super.removeNotify(); 267 fItems.clear(); 268 if (fModelPtr != 0) { 269 removeMenuListeners(fModelPtr); 270 fModelPtr = 0; 271 fInvoker.removeContainerListener(this); 272 fInvoker.removeComponentListener(this); 273 fInvoker.removePropertyChangeListener(fPropertyListener); 274 } 275 } 276 } 277 278 /** 279 * Invoked when a component has been added to the container. 280 */ 281 @Override 282 public void componentAdded(final ContainerEvent e) { 283 addItem(e.getChild()); 284 } 285 286 /** 287 * Invoked when a component has been removed from the container. 288 */ 289 @Override 290 public void componentRemoved(final ContainerEvent e) { 291 final Component child = e.getChild(); 292 final MenuItem sm = fItems.get(child); 293 if (sm == null) return; 294 295 remove(sm); 296 fItems.remove(sm); 297 } 298 299 /** 300 * Invoked when the component's size changes. 301 */ 302 @Override 303 public void componentResized(final ComponentEvent e) {} 304 305 /** 306 * Invoked when the component's position changes. 307 */ 308 @Override 309 public void componentMoved(final ComponentEvent e) {} 310 311 /** 312 * Invoked when the component has been made visible. 313 * See componentHidden - we should still have a MenuItem 314 * it just isn't inserted 315 */ 316 @Override 317 public void componentShown(final ComponentEvent e) { 318 setVisible(true); 319 } 320 321 /** 322 * Invoked when the component has been made invisible. 323 * MenuComponent.setVisible does nothing, 324 * so we remove the ScreenMenuItem from the ScreenMenu 325 * but leave it in fItems 326 */ 327 @Override 328 public void componentHidden(final ComponentEvent e) { 329 setVisible(false); 330 } 331 332 private void setVisible(final boolean b) { 333 // Tell our parent to add/remove us 334 final MenuContainer parent = getParent(); 335 336 if (parent != null) { 337 if (parent instanceof ScreenMenu) { 338 final ScreenMenu sm = (ScreenMenu)parent; 339 sm.setChildVisible(fInvoker, b); 340 } 341 } 342 } 343 344 @Override 345 public void setChildVisible(final JMenuItem child, final boolean b) { 346 fItems.remove(child); 347 updateItems(); 348 } 349 350 @Override 351 public void setAccelerator(final KeyStroke ks) {} 352 353 // only check and radio items can be indeterminate 354 @Override 355 public void setIndeterminate(boolean indeterminate) { } 356 357 @Override 358 @SuppressWarnings("deprecation") 359 public void setToolTipText(final String text) { 360 final MenuComponentPeer peer = getPeer(); 361 if (!(peer instanceof CMenuItem)) return; 362 363 final CMenuItem cmi = (CMenuItem)peer; 364 cmi.setToolTipText(text); 365 } 366 367 @Override 368 @SuppressWarnings("deprecation") 369 public void setIcon(final Icon i) { 370 final MenuComponentPeer peer = getPeer(); 371 if (!(peer instanceof CMenuItem)) return; 372 373 final CMenuItem cmi = (CMenuItem)peer; 374 Image img = null; 375 376 if (i != null) { 377 if (i.getIconWidth() > 0 && i.getIconHeight() > 0) { 378 img = AquaIcon.getImageForIcon(i); 379 } 380 } 381 cmi.setImage(img); 382 } 383 384 385 /** 386 * Gets a hashCode for a JMenu or JMenuItem or subclass so that we can compare for 387 * changes in the Menu. 388 */ 389 private static int getHashCode(final Component m) { 390 int hashCode = m.hashCode(); 391 392 if (m instanceof JMenuItem) { 393 final JMenuItem mi = (JMenuItem) m; 394 395 final String text = mi.getText(); 396 if (text != null) hashCode ^= text.hashCode(); 397 398 final Icon icon = mi.getIcon(); 399 if (icon != null) hashCode ^= icon.hashCode(); 400 401 final Icon disabledIcon = mi.getDisabledIcon(); 402 if (disabledIcon != null) hashCode ^= disabledIcon.hashCode(); 403 404 final Action action = mi.getAction(); 405 if (action != null) hashCode ^= action.hashCode(); 406 407 final KeyStroke ks = mi.getAccelerator(); 408 if (ks != null) hashCode ^= ks.hashCode(); 409 410 hashCode ^= Boolean.valueOf(mi.isVisible()).hashCode(); 411 hashCode ^= Boolean.valueOf(mi.isEnabled()).hashCode(); 412 hashCode ^= Boolean.valueOf(mi.isSelected()).hashCode(); 413 414 } else if (m instanceof JSeparator) { 415 hashCode ^= "-".hashCode(); 416 } 417 418 return hashCode; 419 } 420 421 private void addItem(final Component m) { 422 if (!m.isVisible()) return; 423 MenuItem sm = fItems.get(m); 424 425 if (sm == null) { 426 if (m instanceof JMenu) { 427 sm = new ScreenMenu((JMenu)m); 428 } else if (m instanceof JCheckBoxMenuItem) { 429 sm = new ScreenMenuItemCheckbox((JCheckBoxMenuItem)m); 430 } else if (m instanceof JRadioButtonMenuItem) { 431 sm = new ScreenMenuItemCheckbox((JRadioButtonMenuItem)m); 432 } else if (m instanceof JMenuItem) { 433 sm = new ScreenMenuItem((JMenuItem)m); 434 } else if (m instanceof JPopupMenu.Separator || m instanceof JSeparator) { 435 sm = new MenuItem("-"); // This is what java.awt.Menu.addSeparator does 436 } 437 438 // Only place the menu item in the hashtable if we just created it. 439 if (sm != null) { 440 fItems.put(m, sm); 441 } 442 } 443 444 if (sm != null) { 445 add(sm); 446 } 447 } 448 }