001// License: GPL. For details, see LICENSE file. 002package org.openstreetmap.josm.tools; 003 004import static org.openstreetmap.josm.tools.I18n.tr; 005 006import java.awt.event.KeyEvent; 007import java.util.ArrayList; 008import java.util.Arrays; 009import java.util.Comparator; 010import java.util.HashMap; 011import java.util.List; 012import java.util.Map; 013import java.util.Optional; 014import java.util.concurrent.CopyOnWriteArrayList; 015import java.util.function.Predicate; 016import java.util.stream.Collectors; 017 018import javax.swing.AbstractAction; 019import javax.swing.AbstractButton; 020import javax.swing.JMenu; 021import javax.swing.KeyStroke; 022import javax.swing.text.JTextComponent; 023 024import org.openstreetmap.josm.Main; 025import org.openstreetmap.josm.spi.preferences.Config; 026 027/** 028 * Global shortcut class. 029 * 030 * Note: This class represents a single shortcut, contains the factory to obtain 031 * shortcut objects from, manages shortcuts and shortcut collisions, and 032 * finally manages loading and saving shortcuts to/from the preferences. 033 * 034 * Action authors: You only need the {@link #registerShortcut} factory. Ignore everything else. 035 * 036 * All: Use only public methods that are also marked to be used. The others are 037 * public so the shortcut preferences can use them. 038 * @since 1084 039 */ 040public final class Shortcut { 041 /** the unique ID of the shortcut */ 042 private final String shortText; 043 /** a human readable description that will be shown in the preferences */ 044 private String longText; 045 /** the key, the caller requested */ 046 private final int requestedKey; 047 /** the group, the caller requested */ 048 private final int requestedGroup; 049 /** the key that actually is used */ 050 private int assignedKey; 051 /** the modifiers that are used */ 052 private int assignedModifier; 053 /** true if it got assigned what was requested. 054 * (Note: modifiers will be ignored in favour of group when loading it from the preferences then.) */ 055 private boolean assignedDefault; 056 /** true if the user changed this shortcut */ 057 private boolean assignedUser; 058 /** true if the user cannot change this shortcut (Note: it also will not be saved into the preferences) */ 059 private boolean automatic; 060 /** true if the user requested this shortcut to be set to its default value 061 * (will happen on next restart, as this shortcut will not be saved to the preferences) */ 062 private boolean reset; 063 064 // simple constructor 065 private Shortcut(String shortText, String longText, int requestedKey, int requestedGroup, int assignedKey, int assignedModifier, 066 boolean assignedDefault, boolean assignedUser) { 067 this.shortText = shortText; 068 this.longText = longText; 069 this.requestedKey = requestedKey; 070 this.requestedGroup = requestedGroup; 071 this.assignedKey = assignedKey; 072 this.assignedModifier = assignedModifier; 073 this.assignedDefault = assignedDefault; 074 this.assignedUser = assignedUser; 075 this.automatic = false; 076 this.reset = false; 077 } 078 079 public String getShortText() { 080 return shortText; 081 } 082 083 public String getLongText() { 084 return longText; 085 } 086 087 // a shortcut will be renamed when it is handed out again, because the original name may be a dummy 088 private void setLongText(String longText) { 089 this.longText = longText; 090 } 091 092 public int getAssignedKey() { 093 return assignedKey; 094 } 095 096 public int getAssignedModifier() { 097 return assignedModifier; 098 } 099 100 public boolean isAssignedDefault() { 101 return assignedDefault; 102 } 103 104 public boolean isAssignedUser() { 105 return assignedUser; 106 } 107 108 public boolean isAutomatic() { 109 return automatic; 110 } 111 112 public boolean isChangeable() { 113 return !automatic && !"core:none".equals(shortText); 114 } 115 116 private boolean isReset() { 117 return reset; 118 } 119 120 /** 121 * FOR PREF PANE ONLY 122 */ 123 public void setAutomatic() { 124 automatic = true; 125 } 126 127 /** 128 * FOR PREF PANE ONLY.<p> 129 * Sets the modifiers that are used. 130 * @param assignedModifier assigned modifier 131 */ 132 public void setAssignedModifier(int assignedModifier) { 133 this.assignedModifier = assignedModifier; 134 } 135 136 /** 137 * FOR PREF PANE ONLY.<p> 138 * Sets the key that actually is used. 139 * @param assignedKey assigned key 140 */ 141 public void setAssignedKey(int assignedKey) { 142 this.assignedKey = assignedKey; 143 } 144 145 /** 146 * FOR PREF PANE ONLY.<p> 147 * Sets whether the user has changed this shortcut. 148 * @param assignedUser {@code true} if the user has changed this shortcut 149 */ 150 public void setAssignedUser(boolean assignedUser) { 151 this.reset = (this.assignedUser || reset) && !assignedUser; 152 if (assignedUser) { 153 assignedDefault = false; 154 } else if (reset) { 155 assignedKey = requestedKey; 156 assignedModifier = findModifier(requestedGroup, null); 157 } 158 this.assignedUser = assignedUser; 159 } 160 161 /** 162 * Use this to register the shortcut with Swing 163 * @return the key stroke 164 */ 165 public KeyStroke getKeyStroke() { 166 if (assignedModifier != -1) 167 return KeyStroke.getKeyStroke(assignedKey, assignedModifier); 168 return null; 169 } 170 171 // create a shortcut object from an string as saved in the preferences 172 private Shortcut(String prefString) { 173 List<String> s = new ArrayList<>(Config.getPref().getList(prefString)); 174 this.shortText = prefString.substring(15); 175 this.longText = s.get(0); 176 this.requestedKey = Integer.parseInt(s.get(1)); 177 this.requestedGroup = Integer.parseInt(s.get(2)); 178 this.assignedKey = Integer.parseInt(s.get(3)); 179 this.assignedModifier = Integer.parseInt(s.get(4)); 180 this.assignedDefault = Boolean.parseBoolean(s.get(5)); 181 this.assignedUser = Boolean.parseBoolean(s.get(6)); 182 } 183 184 private void saveDefault() { 185 Config.getPref().getList("shortcut.entry."+shortText, Arrays.asList(longText, 186 String.valueOf(requestedKey), String.valueOf(requestedGroup), String.valueOf(requestedKey), 187 String.valueOf(getGroupModifier(requestedGroup)), String.valueOf(true), String.valueOf(false))); 188 } 189 190 // get a string that can be put into the preferences 191 private boolean save() { 192 if (isAutomatic() || isReset() || !isAssignedUser()) { 193 return Config.getPref().putList("shortcut.entry."+shortText, null); 194 } else { 195 return Config.getPref().putList("shortcut.entry."+shortText, Arrays.asList(longText, 196 String.valueOf(requestedKey), String.valueOf(requestedGroup), String.valueOf(assignedKey), 197 String.valueOf(assignedModifier), String.valueOf(assignedDefault), String.valueOf(assignedUser))); 198 } 199 } 200 201 private boolean isSame(int isKey, int isModifier) { 202 // an unassigned shortcut is different from any other shortcut 203 return isKey == assignedKey && isModifier == assignedModifier && assignedModifier != getGroupModifier(NONE); 204 } 205 206 public boolean isEvent(KeyEvent e) { 207 KeyStroke ks = getKeyStroke(); 208 return ks != null && ks.equals(KeyStroke.getKeyStroke(e.getKeyCode(), e.getModifiersEx())); 209 } 210 211 /** 212 * use this to set a menu's mnemonic 213 * @param menu menu 214 */ 215 public void setMnemonic(JMenu menu) { 216 if (assignedModifier == getGroupModifier(MNEMONIC) && getKeyStroke() != null && KeyEvent.getKeyText(assignedKey).length() == 1) { 217 menu.setMnemonic(KeyEvent.getKeyText(assignedKey).charAt(0)); //getKeyStroke().getKeyChar() seems not to work here 218 } 219 } 220 221 /** 222 * use this to set a buttons's mnemonic 223 * @param button button 224 */ 225 public void setMnemonic(AbstractButton button) { 226 if (assignedModifier == getGroupModifier(MNEMONIC) && getKeyStroke() != null && KeyEvent.getKeyText(assignedKey).length() == 1) { 227 button.setMnemonic(KeyEvent.getKeyText(assignedKey).charAt(0)); //getKeyStroke().getKeyChar() seems not to work here 228 } 229 } 230 231 /** 232 * Sets the mnemonic key on a text component. 233 * @param component component 234 */ 235 public void setFocusAccelerator(JTextComponent component) { 236 if (assignedModifier == getGroupModifier(MNEMONIC) && getKeyStroke() != null && KeyEvent.getKeyText(assignedKey).length() == 1) { 237 component.setFocusAccelerator(KeyEvent.getKeyText(assignedKey).charAt(0)); 238 } 239 } 240 241 /** 242 * use this to set a actions's accelerator 243 * @param action action 244 */ 245 public void setAccelerator(AbstractAction action) { 246 if (getKeyStroke() != null) { 247 action.putValue(AbstractAction.ACCELERATOR_KEY, getKeyStroke()); 248 } 249 } 250 251 /** 252 * Returns a human readable text for the shortcut. 253 * @return a human readable text for the shortcut 254 */ 255 public String getKeyText() { 256 return getKeyText(getKeyStroke()); 257 } 258 259 /** 260 * Returns a human readable text for the key stroke. 261 * @param keyStroke key stroke to convert to human readable text 262 * @return a human readable text for the key stroke 263 * @since 12520 264 */ 265 public static String getKeyText(KeyStroke keyStroke) { 266 if (keyStroke == null) return ""; 267 String modifText = KeyEvent.getModifiersExText(keyStroke.getModifiers()); 268 if ("".equals(modifText)) return KeyEvent.getKeyText(keyStroke.getKeyCode()); 269 return modifText + '+' + KeyEvent.getKeyText(keyStroke.getKeyCode()); 270 } 271 272 @Override 273 public String toString() { 274 return getKeyText(); 275 } 276 277 /////////////////////////////// 278 // everything's static below // 279 /////////////////////////////// 280 281 // here we store our shortcuts 282 private static ShortcutCollection shortcuts = new ShortcutCollection(); 283 284 private static class ShortcutCollection extends CopyOnWriteArrayList<Shortcut> { 285 private static final long serialVersionUID = 1L; 286 @Override 287 public boolean add(Shortcut shortcut) { 288 // expensive consistency check only in debug mode 289 if (Logging.isDebugEnabled() 290 && stream().map(Shortcut::getShortText).anyMatch(shortcut.getShortText()::equals)) { 291 Logging.warn(new AssertionError(shortcut.getShortText() + " already added")); 292 } 293 return super.add(shortcut); 294 } 295 296 void replace(Shortcut newShortcut) { 297 final Optional<Shortcut> existing = findShortcutByKeyOrShortText(-1, NONE, newShortcut.shortText); 298 if (existing.isPresent()) { 299 replaceAll(sc -> existing.get() == sc ? newShortcut : sc); 300 } else { 301 add(newShortcut); 302 } 303 } 304 } 305 306 // and here our modifier groups 307 private static Map<Integer, Integer> groups = new HashMap<>(); 308 309 // check if something collides with an existing shortcut 310 311 /** 312 * Returns the registered shortcut fot the key and modifier 313 * @param requestedKey the requested key 314 * @param modifier the modifier 315 * @return an {@link Optional} registered shortcut, never {@code null} 316 */ 317 public static Optional<Shortcut> findShortcut(int requestedKey, int modifier) { 318 return findShortcutByKeyOrShortText(requestedKey, modifier, null); 319 } 320 321 private static Optional<Shortcut> findShortcutByKeyOrShortText(int requestedKey, int modifier, String shortText) { 322 final Predicate<Shortcut> sameKey = sc -> modifier != getGroupModifier(NONE) && sc.isSame(requestedKey, modifier); 323 final Predicate<Shortcut> sameShortText = sc -> sc.getShortText().equals(shortText); 324 return shortcuts.stream() 325 .filter(sameKey.or(sameShortText)) 326 .sorted(Comparator.comparingInt(sc -> sameShortText.test(sc) ? 0 : 1)) 327 .findAny(); 328 } 329 330 /** 331 * Returns a list of all shortcuts. 332 * @return a list of all shortcuts 333 */ 334 public static List<Shortcut> listAll() { 335 return shortcuts.stream() 336 .filter(c -> !"core:none".equals(c.shortText)) 337 .collect(Collectors.toList()); 338 } 339 340 /** None group: used with KeyEvent.CHAR_UNDEFINED if no shortcut is defined */ 341 public static final int NONE = 5000; 342 public static final int MNEMONIC = 5001; 343 /** Reserved group: for system shortcuts only */ 344 public static final int RESERVED = 5002; 345 /** Direct group: no modifier */ 346 public static final int DIRECT = 5003; 347 /** Alt group */ 348 public static final int ALT = 5004; 349 /** Shift group */ 350 public static final int SHIFT = 5005; 351 /** Command group. Matches CTRL modifier on Windows/Linux but META modifier on OS X */ 352 public static final int CTRL = 5006; 353 /** Alt-Shift group */ 354 public static final int ALT_SHIFT = 5007; 355 /** Alt-Command group. Matches ALT-CTRL modifier on Windows/Linux but ALT-META modifier on OS X */ 356 public static final int ALT_CTRL = 5008; 357 /** Command-Shift group. Matches CTRL-SHIFT modifier on Windows/Linux but META-SHIFT modifier on OS X */ 358 public static final int CTRL_SHIFT = 5009; 359 /** Alt-Command-Shift group. Matches ALT-CTRL-SHIFT modifier on Windows/Linux but ALT-META-SHIFT modifier on OS X */ 360 public static final int ALT_CTRL_SHIFT = 5010; 361 362 /* for reassignment */ 363 private static int[] mods = {ALT_CTRL, ALT_SHIFT, CTRL_SHIFT, ALT_CTRL_SHIFT}; 364 private static int[] keys = {KeyEvent.VK_F1, KeyEvent.VK_F2, KeyEvent.VK_F3, KeyEvent.VK_F4, 365 KeyEvent.VK_F5, KeyEvent.VK_F6, KeyEvent.VK_F7, KeyEvent.VK_F8, 366 KeyEvent.VK_F9, KeyEvent.VK_F10, KeyEvent.VK_F11, KeyEvent.VK_F12}; 367 368 // bootstrap 369 private static boolean initdone; 370 private static void doInit() { 371 if (initdone) return; 372 initdone = true; 373 int commandDownMask = Main.platform.getMenuShortcutKeyMaskEx(); 374 groups.put(NONE, -1); 375 groups.put(MNEMONIC, KeyEvent.ALT_DOWN_MASK); 376 groups.put(DIRECT, 0); 377 groups.put(ALT, KeyEvent.ALT_DOWN_MASK); 378 groups.put(SHIFT, KeyEvent.SHIFT_DOWN_MASK); 379 groups.put(CTRL, commandDownMask); 380 groups.put(ALT_SHIFT, KeyEvent.ALT_DOWN_MASK | KeyEvent.SHIFT_DOWN_MASK); 381 groups.put(ALT_CTRL, KeyEvent.ALT_DOWN_MASK | commandDownMask); 382 groups.put(CTRL_SHIFT, commandDownMask | KeyEvent.SHIFT_DOWN_MASK); 383 groups.put(ALT_CTRL_SHIFT, KeyEvent.ALT_DOWN_MASK | commandDownMask | KeyEvent.SHIFT_DOWN_MASK); 384 385 // (1) System reserved shortcuts 386 Main.platform.initSystemShortcuts(); 387 // (2) User defined shortcuts 388 Main.pref.getAllPrefixCollectionKeys("shortcut.entry.").stream() 389 .map(Shortcut::new) 390 .filter(sc -> !findShortcut(sc.getAssignedKey(), sc.getAssignedModifier()).isPresent()) 391 .sorted(Comparator.comparing(sc -> sc.isAssignedUser() ? 1 : sc.isAssignedDefault() ? 2 : 3)) 392 .forEachOrdered(shortcuts::replace); 393 } 394 395 private static int getGroupModifier(int group) { 396 return Optional.ofNullable(groups.get(group)).orElse(-1); 397 } 398 399 private static int findModifier(int group, Integer modifier) { 400 if (modifier == null) { 401 modifier = getGroupModifier(group); 402 if (modifier == null) { // garbage in, no shortcut out 403 modifier = getGroupModifier(NONE); 404 } 405 } 406 return modifier; 407 } 408 409 // shutdown handling 410 public static boolean savePrefs() { 411 return shortcuts.stream() 412 .map(Shortcut::save) 413 .reduce(Boolean.FALSE, Boolean::logicalOr); // has changed 414 } 415 416 /** 417 * FOR PLATFORMHOOK USE ONLY. 418 * <p> 419 * This registers a system shortcut. See PlatformHook for details. 420 * @param shortText an ID. re-use a {@code "system:*"} ID if possible, else use something unique. 421 * @param longText this will be displayed in the shortcut preferences dialog. Better 422 * use something the user will recognize... 423 * @param key the key. Use a {@link KeyEvent KeyEvent.VK_*} constant here. 424 * @param modifier the modifier. Use a {@link KeyEvent KeyEvent.*_MASK} constant here. 425 * @return the system shortcut 426 */ 427 public static Shortcut registerSystemShortcut(String shortText, String longText, int key, int modifier) { 428 final Optional<Shortcut> existing = findShortcutByKeyOrShortText(key, modifier, shortText); 429 if (existing.isPresent() && shortText.equals(existing.get().getShortText())) { 430 return existing.get(); 431 } else if (existing.isPresent()) { 432 // this always is a logic error in the hook 433 Logging.error("CONFLICT WITH SYSTEM KEY " + shortText + ": " + existing.get()); 434 return null; 435 } 436 final Shortcut shortcut = new Shortcut(shortText, longText, key, RESERVED, key, modifier, true, false); 437 shortcuts.add(shortcut); 438 return shortcut; 439 } 440 441 /** 442 * Register a shortcut linked to several characters. 443 * 444 * @param shortText an ID. re-use a {@code "system:*"} ID if possible, else use something unique. 445 * {@code "menu:*"} is reserved for menu mnemonics, {@code "core:*"} is reserved for 446 * actions that are part of JOSM's core. Use something like 447 * {@code <pluginname>+":"+<actionname>}. 448 * @param longText this will be displayed in the shortcut preferences dialog. Better 449 * use something the user will recognize... 450 * @param characters the characters you'd prefer 451 * @param requestedGroup the group this shortcut fits best. This will determine the 452 * modifiers your shortcut will get assigned. Use the constants defined above. 453 * @return the shortcut 454 */ 455 public static List<Shortcut> registerMultiShortcuts(String shortText, String longText, List<Character> characters, int requestedGroup) { 456 List<Shortcut> result = new ArrayList<>(); 457 int i = 1; 458 Map<Integer, Integer> regularKeyCodes = KeyboardUtils.getRegularKeyCodesMap(); 459 for (Character c : characters) { 460 Integer code = (int) c; 461 result.add(registerShortcut( 462 new StringBuilder(shortText).append(" (").append(i).append(')').toString(), longText, 463 // Add extended keyCode if not a regular one 464 regularKeyCodes.containsKey(code) ? regularKeyCodes.get(code) : 465 isDeadKey(code) ? code : c | KeyboardUtils.EXTENDED_KEYCODE_FLAG, 466 requestedGroup)); 467 i++; 468 } 469 return result; 470 } 471 472 static boolean isDeadKey(int keyCode) { 473 return KeyEvent.VK_DEAD_GRAVE <= keyCode && keyCode <= KeyEvent.VK_DEAD_SEMIVOICED_SOUND; 474 } 475 476 /** 477 * Register a shortcut. 478 * 479 * Here you get your shortcuts from. The parameters are: 480 * 481 * @param shortText an ID. re-use a {@code "system:*"} ID if possible, else use something unique. 482 * {@code "menu:*"} is reserved for menu mnemonics, {@code "core:*"} is reserved for 483 * actions that are part of JOSM's core. Use something like 484 * {@code <pluginname>+":"+<actionname>}. 485 * @param longText this will be displayed in the shortcut preferences dialog. Better 486 * use something the user will recognize... 487 * @param requestedKey the key you'd prefer. Use a {@link KeyEvent KeyEvent.VK_*} constant here. 488 * @param requestedGroup the group this shortcut fits best. This will determine the 489 * modifiers your shortcut will get assigned. Use the constants defined above. 490 * @return the shortcut 491 */ 492 public static Shortcut registerShortcut(String shortText, String longText, int requestedKey, int requestedGroup) { 493 return registerShortcut(shortText, longText, requestedKey, requestedGroup, null); 494 } 495 496 // and now the workhorse. same parameters as above, just one more 497 private static Shortcut registerShortcut(String shortText, String longText, int requestedKey, int requestedGroup, Integer modifier) { 498 doInit(); 499 Integer defaultModifier = findModifier(requestedGroup, modifier); 500 final Optional<Shortcut> existing = findShortcutByKeyOrShortText(requestedKey, defaultModifier, shortText); 501 if (existing.isPresent() && shortText.equals(existing.get().getShortText())) { 502 // a re-register? maybe a sc already read from the preferences? 503 final Shortcut sc = existing.get(); 504 sc.setLongText(longText); // or set by the platformHook, in this case the original longText doesn't match the real action 505 sc.saveDefault(); 506 return sc; 507 } else if (existing.isPresent()) { 508 final Shortcut conflict = existing.get(); 509 if (Main.isPlatformOsx()) { 510 // Try to reassign Meta to Ctrl 511 int newmodifier = findNewOsxModifier(requestedGroup); 512 if (!findShortcut(requestedKey, newmodifier).isPresent()) { 513 Logging.info("Reassigning OSX shortcut '" + shortText + "' from Meta to Ctrl because of conflict with " + conflict); 514 return reassignShortcut(shortText, longText, requestedKey, conflict, requestedGroup, requestedKey, newmodifier); 515 } 516 } 517 for (int m : mods) { 518 for (int k : keys) { 519 int newmodifier = getGroupModifier(m); 520 if (!findShortcut(k, newmodifier).isPresent()) { 521 Logging.info("Reassigning shortcut '" + shortText + "' from " + modifier + " to " + newmodifier + 522 " because of conflict with " + conflict); 523 return reassignShortcut(shortText, longText, requestedKey, conflict, m, k, newmodifier); 524 } 525 } 526 } 527 } else { 528 Shortcut newsc = new Shortcut(shortText, longText, requestedKey, requestedGroup, requestedKey, defaultModifier, true, false); 529 newsc.saveDefault(); 530 shortcuts.add(newsc); 531 return newsc; 532 } 533 534 return null; 535 } 536 537 private static int findNewOsxModifier(int requestedGroup) { 538 switch (requestedGroup) { 539 case CTRL: return KeyEvent.CTRL_DOWN_MASK; 540 case ALT_CTRL: return KeyEvent.ALT_DOWN_MASK | KeyEvent.CTRL_DOWN_MASK; 541 case CTRL_SHIFT: return KeyEvent.CTRL_DOWN_MASK | KeyEvent.SHIFT_DOWN_MASK; 542 case ALT_CTRL_SHIFT: return KeyEvent.ALT_DOWN_MASK | KeyEvent.CTRL_DOWN_MASK | KeyEvent.SHIFT_DOWN_MASK; 543 default: return 0; 544 } 545 } 546 547 private static Shortcut reassignShortcut(String shortText, String longText, int requestedKey, Shortcut conflict, 548 int m, int k, int newmodifier) { 549 Shortcut newsc = new Shortcut(shortText, longText, requestedKey, m, k, newmodifier, false, false); 550 Logging.info(tr("Silent shortcut conflict: ''{0}'' moved by ''{1}'' to ''{2}''.", 551 shortText, conflict.getShortText(), newsc.getKeyText())); 552 newsc.saveDefault(); 553 shortcuts.add(newsc); 554 return newsc; 555 } 556 557 /** 558 * Replies the platform specific key stroke for the 'Copy' command, i.e. 559 * 'Ctrl-C' on windows or 'Meta-C' on a Mac. null, if the platform specific 560 * copy command isn't known. 561 * 562 * @return the platform specific key stroke for the 'Copy' command 563 */ 564 public static KeyStroke getCopyKeyStroke() { 565 return getKeyStrokeForShortKey("system:copy"); 566 } 567 568 /** 569 * Replies the platform specific key stroke for the 'Paste' command, i.e. 570 * 'Ctrl-V' on windows or 'Meta-V' on a Mac. null, if the platform specific 571 * paste command isn't known. 572 * 573 * @return the platform specific key stroke for the 'Paste' command 574 */ 575 public static KeyStroke getPasteKeyStroke() { 576 return getKeyStrokeForShortKey("system:paste"); 577 } 578 579 /** 580 * Replies the platform specific key stroke for the 'Cut' command, i.e. 581 * 'Ctrl-X' on windows or 'Meta-X' on a Mac. null, if the platform specific 582 * 'Cut' command isn't known. 583 * 584 * @return the platform specific key stroke for the 'Cut' command 585 */ 586 public static KeyStroke getCutKeyStroke() { 587 return getKeyStrokeForShortKey("system:cut"); 588 } 589 590 private static KeyStroke getKeyStrokeForShortKey(String shortKey) { 591 return shortcuts.stream() 592 .filter(sc -> shortKey.equals(sc.getShortText())) 593 .findAny() 594 .map(Shortcut::getKeyStroke) 595 .orElse(null); 596 } 597}