1 /*
2 * Copyright (c) 1997, 2009, 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 package javax.swing;
26
27 import java.awt.Component;
28 import java.awt.Font;
29 import java.awt.Color;
30 import java.awt.Insets;
31 import java.awt.Dimension;
32 import java.awt.KeyboardFocusManager;
33 import java.awt.KeyEventPostProcessor;
34 import java.awt.Toolkit;
35
36 import java.awt.event.KeyEvent;
37
38 import java.security.AccessController;
39
40 import javax.swing.plaf.ComponentUI;
41 import javax.swing.border.Border;
42
43 import javax.swing.event.SwingPropertyChangeSupport;
44 import java.beans.PropertyChangeListener;
45
46 import java.io.Serializable;
47 import java.io.File;
48 import java.io.FileInputStream;
49
50 import java.util.ArrayList;
51 import java.util.Properties;
52 import java.util.StringTokenizer;
53 import java.util.Vector;
54 import java.util.Locale;
55
56 import sun.awt.SunToolkit;
57 import sun.awt.OSInfo;
58 import sun.security.action.GetPropertyAction;
59 import sun.swing.SwingUtilities2;
60 import java.lang.reflect.Method;
61 import java.util.HashMap;
62 import sun.awt.AppContext;
63 import sun.awt.AWTAccessor;
64
65
66 /**
67 * {@code UIManager} manages the current look and feel, the set of
68 * available look and feels, {@code PropertyChangeListeners} that
69 * are notified when the look and feel changes, look and feel defaults, and
70 * convenience methods for obtaining various default values.
71 *
72 * <h3>Specifying the look and feel</h3>
73 *
74 * The look and feel can be specified in two distinct ways: by
75 * specifying the fully qualified name of the class for the look and
76 * feel, or by creating an instance of {@code LookAndFeel} and passing
77 * it to {@code setLookAndFeel}. The following example illustrates
78 * setting the look and feel to the system look and feel:
79 * <pre>
80 * UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
81 * </pre>
82 * The following example illustrates setting the look and feel based on
83 * class name:
84 * <pre>
85 * UIManager.setLookAndFeel("javax.swing.plaf.metal.MetalLookAndFeel");
86 * </pre>
87 * Once the look and feel has been changed it is imperative to invoke
88 * {@code updateUI} on all {@code JComponents}. The method {@link
89 * SwingUtilities#updateComponentTreeUI} makes it easy to apply {@code
90 * updateUI} to a containment hierarchy. Refer to it for
91 * details. The exact behavior of not invoking {@code
92 * updateUI} after changing the look and feel is
93 * unspecified. It is very possible to receive unexpected exceptions,
94 * painting problems, or worse.
95 *
96 * <h3>Default look and feel</h3>
97 *
98 * The class used for the default look and feel is chosen in the following
99 * manner:
100 * <ol>
101 * <li>If the system property <code>swing.defaultlaf</code> is
102 * {@code non-null}, use its value as the default look and feel class
103 * name.
104 * <li>If the {@link java.util.Properties} file <code>swing.properties</code>
105 * exists and contains the key <code>swing.defaultlaf</code>,
106 * use its value as the default look and feel class name. The location
107 * that is checked for <code>swing.properties</code> may vary depending
108 * upon the implementation of the Java platform. In Sun's implementation
109 * the location is <code>${java.home}/lib/swing.properties</code>.
110 * Refer to the release notes of the implementation being used for
111 * further details.
112 * <li>Otherwise use the cross platform look and feel.
113 * </ol>
114 *
115 * <h3>Defaults</h3>
116 *
117 * {@code UIManager} manages three sets of {@code UIDefaults}. In order, they
118 * are:
119 * <ol>
120 * <li>Developer defaults. With few exceptions Swing does not
121 * alter the developer defaults; these are intended to be modified
122 * and used by the developer.
123 * <li>Look and feel defaults. The look and feel defaults are
124 * supplied by the look and feel at the time it is installed as the
125 * current look and feel ({@code setLookAndFeel()} is invoked). The
126 * look and feel defaults can be obtained using the {@code
127 * getLookAndFeelDefaults()} method.
128 * <li>Sytem defaults. The system defaults are provided by Swing.
129 * </ol>
130 * Invoking any of the various {@code get} methods
131 * results in checking each of the defaults, in order, returning
132 * the first {@code non-null} value. For example, invoking
133 * {@code UIManager.getString("Table.foreground")} results in first
134 * checking developer defaults. If the developer defaults contain
135 * a value for {@code "Table.foreground"} it is returned, otherwise
136 * the look and feel defaults are checked, followed by the system defaults.
137 * <p>
138 * It's important to note that {@code getDefaults} returns a custom
139 * instance of {@code UIDefaults} with this resolution logic built into it.
140 * For example, {@code UIManager.getDefaults().getString("Table.foreground")}
141 * is equivalent to {@code UIManager.getString("Table.foreground")}. Both
142 * resolve using the algorithm just described. In many places the
143 * documentation uses the word defaults to refer to the custom instance
144 * of {@code UIDefaults} with the resolution logic as previously described.
145 * <p>
146 * When the look and feel is changed, {@code UIManager} alters only the
147 * look and feel defaults; the developer and system defaults are not
148 * altered by the {@code UIManager} in any way.
149 * <p>
150 * The set of defaults a particular look and feel supports is defined
151 * and documented by that look and feel. In addition, each look and
152 * feel, or {@code ComponentUI} provided by a look and feel, may
153 * access the defaults at different times in their life cycle. Some
154 * look and feels may agressively look up defaults, so that changing a
155 * default may not have an effect after installing the look and feel.
156 * Other look and feels may lazily access defaults so that a change to
157 * the defaults may effect an existing look and feel. Finally, other look
158 * and feels might not configure themselves from the defaults table in
159 * any way. None-the-less it is usually the case that a look and feel
160 * expects certain defaults, so that in general
161 * a {@code ComponentUI} provided by one look and feel will not
162 * work with another look and feel.
163 * <p>
164 * <strong>Warning:</strong>
165 * Serialized objects of this class will not be compatible with
166 * future Swing releases. The current serialization support is
167 * appropriate for short term storage or RMI between applications running
168 * the same version of Swing. As of 1.4, support for long term storage
169 * of all JavaBeans<sup><font size="-2">TM</font></sup>
170 * has been added to the <code>java.beans</code> package.
171 * Please see {@link java.beans.XMLEncoder}.
172 *
173 * @author Thomas Ball
174 * @author Hans Muller
175 */
176 public class UIManager implements Serializable
177 {
178 /**
179 * This class defines the state managed by the <code>UIManager</code>. For
180 * Swing applications the fields in this class could just as well
181 * be static members of <code>UIManager</code> however we give them
182 * "AppContext"
183 * scope instead so that applets (and potentially multiple lightweight
184 * applications running in a single VM) have their own state. For example,
185 * an applet can alter its look and feel, see <code>setLookAndFeel</code>.
186 * Doing so has no affect on other applets (or the browser).
187 */
188 private static class LAFState
189 {
190 Properties swingProps;
191 private UIDefaults[] tables = new UIDefaults[2];
192
193 boolean initialized = false;
194 MultiUIDefaults multiUIDefaults = new MultiUIDefaults(tables);
195 LookAndFeel lookAndFeel;
196 LookAndFeel multiLookAndFeel = null;
197 Vector<LookAndFeel> auxLookAndFeels = null;
198 SwingPropertyChangeSupport changeSupport;
199
200 LookAndFeelInfo[] installedLAFs;
201
202 UIDefaults getLookAndFeelDefaults() { return tables[0]; }
203 void setLookAndFeelDefaults(UIDefaults x) { tables[0] = x; }
204
205 UIDefaults getSystemDefaults() { return tables[1]; }
206 void setSystemDefaults(UIDefaults x) { tables[1] = x; }
207
208 /**
209 * Returns the SwingPropertyChangeSupport for the current
210 * AppContext. If <code>create</code> is a true, a non-null
211 * <code>SwingPropertyChangeSupport</code> will be returned, if
212 * <code>create</code> is false and this has not been invoked
213 * with true, null will be returned.
214 */
215 public synchronized SwingPropertyChangeSupport
216 getPropertyChangeSupport(boolean create) {
217 if (create && changeSupport == null) {
218 changeSupport = new SwingPropertyChangeSupport(
219 UIManager.class);
220 }
221 return changeSupport;
222 }
223 }
224
225
226
227
228 /* Lock object used in place of class object for synchronization. (4187686)
229 */
230 private static final Object classLock = new Object();
231
232 /**
233 * Return the <code>LAFState</code> object, lazily create one if necessary.
234 * All access to the <code>LAFState</code> fields is done via this method,
235 * for example:
236 * <pre>
237 * getLAFState().initialized = true;
238 * </pre>
239 */
240 private static LAFState getLAFState() {
241 LAFState rv = (LAFState)SwingUtilities.appContextGet(
242 SwingUtilities2.LAF_STATE_KEY);
243 if (rv == null) {
244 synchronized (classLock) {
245 rv = (LAFState)SwingUtilities.appContextGet(
246 SwingUtilities2.LAF_STATE_KEY);
247 if (rv == null) {
248 SwingUtilities.appContextPut(
249 SwingUtilities2.LAF_STATE_KEY,
250 (rv = new LAFState()));
251 }
252 }
253 }
254 return rv;
255 }
256
257
258 /* Keys used for the properties file in <java.home>/lib/swing.properties.
259 * See loadUserProperties(), initialize().
260 */
261
262 private static final String defaultLAFKey = "swing.defaultlaf";
263 private static final String auxiliaryLAFsKey = "swing.auxiliarylaf";
264 private static final String multiplexingLAFKey = "swing.plaf.multiplexinglaf";
265 private static final String installedLAFsKey = "swing.installedlafs";
266 private static final String disableMnemonicKey = "swing.disablenavaids";
267
268 /**
269 * Return a swing.properties file key for the attribute of specified
270 * look and feel. The attr is either "name" or "class", a typical
271 * key would be: "swing.installedlaf.windows.name"
272 */
273 private static String makeInstalledLAFKey(String laf, String attr) {
274 return "swing.installedlaf." + laf + "." + attr;
275 }
276
277 /**
278 * The filename for swing.properties is a path like this (Unix version):
279 * <java.home>/lib/swing.properties. This method returns a bogus
280 * filename if java.home isn't defined.
281 */
282 private static String makeSwingPropertiesFilename() {
283 String sep = File.separator;
284 // No need to wrap this in a doPrivileged as it's called from
285 // a doPrivileged.
286 String javaHome = System.getProperty("java.home");
287 if (javaHome == null) {
288 javaHome = "<java.home undefined>";
289 }
290 return javaHome + sep + "lib" + sep + "swing.properties";
291 }
292
293
294 /**
295 * Provides a little information about an installed
296 * <code>LookAndFeel</code> for the sake of configuring a menu or
297 * for initial application set up.
298 *
299 * @see UIManager#getInstalledLookAndFeels
300 * @see LookAndFeel
301 */
302 public static class LookAndFeelInfo {
303 private String name;
304 private String className;
305
306 /**
307 * Constructs a <code>UIManager</code>s
308 * <code>LookAndFeelInfo</code> object.
309 *
310 * @param name a <code>String</code> specifying the name of
311 * the look and feel
312 * @param className a <code>String</code> specifiying the name of
313 * the class that implements the look and feel
314 */
315 public LookAndFeelInfo(String name, String className) {
316 this.name = name;
317 this.className = className;
318 }
319
320 /**
321 * Returns the name of the look and feel in a form suitable
322 * for a menu or other presentation
323 * @return a <code>String</code> containing the name
324 * @see LookAndFeel#getName
325 */
326 public String getName() {
327 return name;
328 }
329
330 /**
331 * Returns the name of the class that implements this look and feel.
332 * @return the name of the class that implements this
333 * <code>LookAndFeel</code>
334 * @see LookAndFeel
335 */
336 public String getClassName() {
337 return className;
338 }
339
340 /**
341 * Returns a string that displays and identifies this
342 * object's properties.
343 *
344 * @return a <code>String</code> representation of this object
345 */
346 public String toString() {
347 return getClass().getName() + "[" + getName() + " " + getClassName() + "]";
348 }
349 }
350
351
352 /**
353 * The default value of <code>installedLAFS</code> is used when no
354 * swing.properties
355 * file is available or if the file doesn't contain a "swing.installedlafs"
356 * property.
357 *
358 * @see #initializeInstalledLAFs
359 */
360 private static LookAndFeelInfo[] installedLAFs;
361
362 static {
363 ArrayList<LookAndFeelInfo> iLAFs = new ArrayList<LookAndFeelInfo>(4);
364 iLAFs.add(new LookAndFeelInfo(
365 "Metal", "javax.swing.plaf.metal.MetalLookAndFeel"));
366 iLAFs.add(new LookAndFeelInfo(
367 "Nimbus", "javax.swing.plaf.nimbus.NimbusLookAndFeel"));
368 iLAFs.add(new LookAndFeelInfo("CDE/Motif",
369 "com.sun.java.swing.plaf.motif.MotifLookAndFeel"));
370
371 // Only include windows on Windows boxs.
372 OSInfo.OSType osType = AccessController.doPrivileged(OSInfo.getOSTypeAction());
373 if (osType == OSInfo.OSType.WINDOWS) {
374 iLAFs.add(new LookAndFeelInfo("Windows",
375 "com.sun.java.swing.plaf.windows.WindowsLookAndFeel"));
376 if (Toolkit.getDefaultToolkit().getDesktopProperty(
377 "win.xpstyle.themeActive") != null) {
378 iLAFs.add(new LookAndFeelInfo("Windows Classic",
379 "com.sun.java.swing.plaf.windows.WindowsClassicLookAndFeel"));
380 }
381 }
382 else {
383 // GTK is not shipped on Windows.
384 iLAFs.add(new LookAndFeelInfo("GTK+",
385 "com.sun.java.swing.plaf.gtk.GTKLookAndFeel"));
386 }
387 installedLAFs = iLAFs.toArray(new LookAndFeelInfo[iLAFs.size()]);
388 }
389
390
391 /**
392 * Returns an array of {@code LookAndFeelInfo}s representing the
393 * {@code LookAndFeel} implementations currently available. The
394 * <code>LookAndFeelInfo</code> objects can be used by an
395 * application to construct a menu of look and feel options for
396 * the user, or to determine which look and feel to set at startup
397 * time. To avoid the penalty of creating numerous {@code
398 * LookAndFeel} objects, {@code LookAndFeelInfo} maintains the
399 * class name of the {@code LookAndFeel} class, not the actual
400 * {@code LookAndFeel} instance.
401 * <p>
402 * The following example illustrates setting the current look and feel
403 * from an instance of {@code LookAndFeelInfo}:
404 * <pre>
405 * UIManager.setLookAndFeel(info.getClassName());
406 * </pre>
407 *
408 * @return an array of <code>LookAndFeelInfo</code> objects
409 * @see #setLookAndFeel
410 */
411 public static LookAndFeelInfo[] getInstalledLookAndFeels() {
412 maybeInitialize();
413 LookAndFeelInfo[] ilafs = getLAFState().installedLAFs;
414 if (ilafs == null) {
415 ilafs = installedLAFs;
416 }
417 LookAndFeelInfo[] rv = new LookAndFeelInfo[ilafs.length];
418 System.arraycopy(ilafs, 0, rv, 0, ilafs.length);
419 return rv;
420 }
421
422
423 /**
424 * Sets the set of available look and feels. While this method does
425 * not check to ensure all of the {@code LookAndFeelInfos} are
426 * {@code non-null}, it is strongly recommended that only {@code non-null}
427 * values are supplied in the {@code infos} array.
428 *
429 * @param infos set of <code>LookAndFeelInfo</code> objects specifying
430 * the available look and feels
431 *
432 * @see #getInstalledLookAndFeels
433 * @throws NullPointerException if {@code infos} is {@code null}
434 */
435 public static void setInstalledLookAndFeels(LookAndFeelInfo[] infos)
436 throws SecurityException
437 {
438 maybeInitialize();
439 LookAndFeelInfo[] newInfos = new LookAndFeelInfo[infos.length];
440 System.arraycopy(infos, 0, newInfos, 0, infos.length);
441 getLAFState().installedLAFs = newInfos;
442 }
443
444
445 /**
446 * Adds the specified look and feel to the set of available look
447 * and feels. While this method allows a {@code null} {@code info},
448 * it is strongly recommended that a {@code non-null} value be used.
449 *
450 * @param info a <code>LookAndFeelInfo</code> object that names the
451 * look and feel and identifies the class that implements it
452 * @see #setInstalledLookAndFeels
453 */
454 public static void installLookAndFeel(LookAndFeelInfo info) {
455 LookAndFeelInfo[] infos = getInstalledLookAndFeels();
456 LookAndFeelInfo[] newInfos = new LookAndFeelInfo[infos.length + 1];
457 System.arraycopy(infos, 0, newInfos, 0, infos.length);
458 newInfos[infos.length] = info;
459 setInstalledLookAndFeels(newInfos);
460 }
461
462
463 /**
464 * Adds the specified look and feel to the set of available look
465 * and feels. While this method does not check the
466 * arguments in any way, it is strongly recommended that {@code
467 * non-null} values be supplied.
468 *
469 * @param name descriptive name of the look and feel
470 * @param className name of the class that implements the look and feel
471 * @see #setInstalledLookAndFeels
472 */
473 public static void installLookAndFeel(String name, String className) {
474 installLookAndFeel(new LookAndFeelInfo(name, className));
475 }
476
477
478 /**
479 * Returns the current look and feel or <code>null</code>.
480 *
481 * @return current look and feel, or <code>null</code>
482 * @see #setLookAndFeel
483 */
484 public static LookAndFeel getLookAndFeel() {
485 maybeInitialize();
486 return getLAFState().lookAndFeel;
487 }
488
489
490 /**
491 * Sets the current look and feel to {@code newLookAndFeel}.
492 * If the current look and feel is {@code non-null} {@code
493 * uninitialize} is invoked on it. If {@code newLookAndFeel} is
494 * {@code non-null}, {@code initialize} is invoked on it followed
495 * by {@code getDefaults}. The defaults returned from {@code
496 * newLookAndFeel.getDefaults()} replace those of the defaults
497 * from the previous look and feel. If the {@code newLookAndFeel} is
498 * {@code null}, the look and feel defaults are set to {@code null}.
499 * <p>
500 * A value of {@code null} can be used to set the look and feel
501 * to {@code null}. As the {@code LookAndFeel} is required for
502 * most of Swing to function, setting the {@code LookAndFeel} to
503 * {@code null} is strongly discouraged.
504 * <p>
505 * This is a JavaBeans bound property.
506 *
507 * @param newLookAndFeel {@code LookAndFeel} to install
508 * @throws UnsupportedLookAndFeelException if
509 * {@code newLookAndFeel} is {@code non-null} and
510 * {@code newLookAndFeel.isSupportedLookAndFeel()} returns
511 * {@code false}
512 * @see #getLookAndFeel
513 */
514 public static void setLookAndFeel(LookAndFeel newLookAndFeel)
515 throws UnsupportedLookAndFeelException
516 {
517 if ((newLookAndFeel != null) && !newLookAndFeel.isSupportedLookAndFeel()) {
518 String s = newLookAndFeel.toString() + " not supported on this platform";
519 throw new UnsupportedLookAndFeelException(s);
520 }
521
522 LAFState lafState = getLAFState();
523 LookAndFeel oldLookAndFeel = lafState.lookAndFeel;
524 if (oldLookAndFeel != null) {
525 oldLookAndFeel.uninitialize();
526 }
527
528 lafState.lookAndFeel = newLookAndFeel;
529 if (newLookAndFeel != null) {
530 sun.swing.DefaultLookup.setDefaultLookup(null);
531 newLookAndFeel.initialize();
532 lafState.setLookAndFeelDefaults(newLookAndFeel.getDefaults());
533 }
534 else {
535 lafState.setLookAndFeelDefaults(null);
536 }
537
538 SwingPropertyChangeSupport changeSupport = lafState.
539 getPropertyChangeSupport(false);
540 if (changeSupport != null) {
541 changeSupport.firePropertyChange("lookAndFeel", oldLookAndFeel,
542 newLookAndFeel);
543 }
544 }
545
546
547 /**
548 * Loads the {@code LookAndFeel} specified by the given class
549 * name, using the current thread's context class loader, and
550 * passes it to {@code setLookAndFeel(LookAndFeel)}.
551 *
552 * @param className a string specifying the name of the class that implements
553 * the look and feel
554 * @exception ClassNotFoundException if the <code>LookAndFeel</code>
555 * class could not be found
556 * @exception InstantiationException if a new instance of the class
557 * couldn't be created
558 * @exception IllegalAccessException if the class or initializer isn't accessible
559 * @exception UnsupportedLookAndFeelException if
560 * <code>lnf.isSupportedLookAndFeel()</code> is false
561 * @throws ClassCastException if {@code className} does not identify
562 * a class that extends {@code LookAndFeel}
563 */
564 public static void setLookAndFeel(String className)
565 throws ClassNotFoundException,
566 InstantiationException,
567 IllegalAccessException,
568 UnsupportedLookAndFeelException
569 {
570 if ("javax.swing.plaf.metal.MetalLookAndFeel".equals(className)) {
571 // Avoid reflection for the common case of metal.
572 setLookAndFeel(new javax.swing.plaf.metal.MetalLookAndFeel());
573 }
574 else {
575 Class lnfClass = SwingUtilities.loadSystemClass(className);
576 setLookAndFeel((LookAndFeel)(lnfClass.newInstance()));
577 }
578 }
579
580 /**
581 * Returns the name of the <code>LookAndFeel</code> class that implements
582 * the native system look and feel if there is one, otherwise
583 * the name of the default cross platform <code>LookAndFeel</code>
584 * class. This value can be overriden by setting the
585 * <code>swing.systemlaf</code> system property.
586 *
587 * @return the <code>String</code> of the <code>LookAndFeel</code>
588 * class
589 *
590 * @see #setLookAndFeel
591 * @see #getCrossPlatformLookAndFeelClassName
592 */
593 public static String getSystemLookAndFeelClassName() {
594 String systemLAF = AccessController.doPrivileged(
595 new GetPropertyAction("swing.systemlaf"));
596 if (systemLAF != null) {
597 return systemLAF;
598 }
599 OSInfo.OSType osType = AccessController.doPrivileged(OSInfo.getOSTypeAction());
600 if (osType == OSInfo.OSType.WINDOWS) {
601 return "com.sun.java.swing.plaf.windows.WindowsLookAndFeel";
602 } else {
603 String desktop = AccessController.doPrivileged(new GetPropertyAction("sun.desktop"));
604 Toolkit toolkit = Toolkit.getDefaultToolkit();
605 if ("gnome".equals(desktop) &&
606 toolkit instanceof SunToolkit &&
607 ((SunToolkit) toolkit).isNativeGTKAvailable()) {
608 // May be set on Linux and Solaris boxs.
609 return "com.sun.java.swing.plaf.gtk.GTKLookAndFeel";
610 }
611 if (osType == OSInfo.OSType.SOLARIS) {
612 return "com.sun.java.swing.plaf.motif.MotifLookAndFeel";
613 }
614 }
615 return getCrossPlatformLookAndFeelClassName();
616 }
617
618
619 /**
620 * Returns the name of the <code>LookAndFeel</code> class that implements
621 * the default cross platform look and feel -- the Java
622 * Look and Feel (JLF). This value can be overriden by setting the
623 * <code>swing.crossplatformlaf</code> system property.
624 *
625 * @return a string with the JLF implementation-class
626 * @see #setLookAndFeel
627 * @see #getSystemLookAndFeelClassName
628 */
629 public static String getCrossPlatformLookAndFeelClassName() {
630 String laf = AccessController.doPrivileged(
631 new GetPropertyAction("swing.crossplatformlaf"));
632 if (laf != null) {
633 return laf;
634 }
635 return "javax.swing.plaf.metal.MetalLookAndFeel";
636 }
637
638
639 /**
640 * Returns the defaults. The returned defaults resolve using the
641 * logic specified in the class documentation.
642 *
643 * @return a <code>UIDefaults</code> object containing the default values
644 */
645 public static UIDefaults getDefaults() {
646 maybeInitialize();
647 return getLAFState().multiUIDefaults;
648 }
649
650 /**
651 * Returns a font from the defaults. If the value for {@code key} is
652 * not a {@code Font}, {@code null} is returned.
653 *
654 * @param key an <code>Object</code> specifying the font
655 * @return the <code>Font</code> object
656 * @throws NullPointerException if {@code key} is {@code null}
657 */
658 public static Font getFont(Object key) {
659 return getDefaults().getFont(key);
660 }
661
662 /**
663 * Returns a font from the defaults that is appropriate
664 * for the given locale. If the value for {@code key} is
665 * not a {@code Font}, {@code null} is returned.
666 *
667 * @param key an <code>Object</code> specifying the font
668 * @param l the <code>Locale</code> for which the font is desired; refer
669 * to {@code UIDefaults} for details on how a {@code null}
670 * {@code Locale} is handled
671 * @return the <code>Font</code> object
672 * @throws NullPointerException if {@code key} is {@code null}
673 * @since 1.4
674 */
675 public static Font getFont(Object key, Locale l) {
676 return getDefaults().getFont(key,l);
677 }
678
679 /**
680 * Returns a color from the defaults. If the value for {@code key} is
681 * not a {@code Color}, {@code null} is returned.
682 *
683 * @param key an <code>Object</code> specifying the color
684 * @return the <code>Color</code> object
685 * @throws NullPointerException if {@code key} is {@code null}
686 */
687 public static Color getColor(Object key) {
688 return getDefaults().getColor(key);
689 }
690
691 /**
692 * Returns a color from the defaults that is appropriate
693 * for the given locale. If the value for {@code key} is
694 * not a {@code Color}, {@code null} is returned.
695 *
696 * @param key an <code>Object</code> specifying the color
697 * @param l the <code>Locale</code> for which the color is desired; refer
698 * to {@code UIDefaults} for details on how a {@code null}
699 * {@code Locale} is handled
700 * @return the <code>Color</code> object
701 * @throws NullPointerException if {@code key} is {@code null}
702 * @since 1.4
703 */
704 public static Color getColor(Object key, Locale l) {
705 return getDefaults().getColor(key,l);
706 }
707
708 /**
709 * Returns an <code>Icon</code> from the defaults. If the value for
710 * {@code key} is not an {@code Icon}, {@code null} is returned.
711 *
712 * @param key an <code>Object</code> specifying the icon
713 * @return the <code>Icon</code> object
714 * @throws NullPointerException if {@code key} is {@code null}
715 */
716 public static Icon getIcon(Object key) {
717 return getDefaults().getIcon(key);
718 }
719
720 /**
721 * Returns an <code>Icon</code> from the defaults that is appropriate
722 * for the given locale. If the value for
723 * {@code key} is not an {@code Icon}, {@code null} is returned.
724 *
725 * @param key an <code>Object</code> specifying the icon
726 * @param l the <code>Locale</code> for which the icon is desired; refer
727 * to {@code UIDefaults} for details on how a {@code null}
728 * {@code Locale} is handled
729 * @return the <code>Icon</code> object
730 * @throws NullPointerException if {@code key} is {@code null}
731 * @since 1.4
732 */
733 public static Icon getIcon(Object key, Locale l) {
734 return getDefaults().getIcon(key,l);
735 }
736
737 /**
738 * Returns a border from the defaults. If the value for
739 * {@code key} is not a {@code Border}, {@code null} is returned.
740 *
741 * @param key an <code>Object</code> specifying the border
742 * @return the <code>Border</code> object
743 * @throws NullPointerException if {@code key} is {@code null}
744 */
745 public static Border getBorder(Object key) {
746 return getDefaults().getBorder(key);
747 }
748
749 /**
750 * Returns a border from the defaults that is appropriate
751 * for the given locale. If the value for
752 * {@code key} is not a {@code Border}, {@code null} is returned.
753 *
754 * @param key an <code>Object</code> specifying the border
755 * @param l the <code>Locale</code> for which the border is desired; refer
756 * to {@code UIDefaults} for details on how a {@code null}
757 * {@code Locale} is handled
758 * @return the <code>Border</code> object
759 * @throws NullPointerException if {@code key} is {@code null}
760 * @since 1.4
761 */
762 public static Border getBorder(Object key, Locale l) {
763 return getDefaults().getBorder(key,l);
764 }
765
766 /**
767 * Returns a string from the defaults. If the value for
768 * {@code key} is not a {@code String}, {@code null} is returned.
769 *
770 * @param key an <code>Object</code> specifying the string
771 * @return the <code>String</code>
772 * @throws NullPointerException if {@code key} is {@code null}
773 */
774 public static String getString(Object key) {
775 return getDefaults().getString(key);
776 }
777
778 /**
779 * Returns a string from the defaults that is appropriate for the
780 * given locale. If the value for
781 * {@code key} is not a {@code String}, {@code null} is returned.
782 *
783 * @param key an <code>Object</code> specifying the string
784 * @param l the <code>Locale</code> for which the string is desired; refer
785 * to {@code UIDefaults} for details on how a {@code null}
786 * {@code Locale} is handled
787 * @return the <code>String</code>
788 * @since 1.4
789 * @throws NullPointerException if {@code key} is {@code null}
790 */
791 public static String getString(Object key, Locale l) {
792 return getDefaults().getString(key,l);
793 }
794
795 /**
796 * Returns a string from the defaults that is appropriate for the
797 * given locale. If the value for
798 * {@code key} is not a {@code String}, {@code null} is returned.
799 *
800 * @param key an <code>Object</code> specifying the string
801 * @param c {@code Component} used to determine the locale;
802 * {@code null} implies the default locale as
803 * returned by {@code Locale.getDefault()}
804 * @return the <code>String</code>
805 * @throws NullPointerException if {@code key} is {@code null}
806 */
807 static String getString(Object key, Component c) {
808 Locale l = (c == null) ? Locale.getDefault() : c.getLocale();
809 return getString(key, l);
810 }
811
812 /**
813 * Returns an integer from the defaults. If the value for
814 * {@code key} is not an {@code Integer}, or does not exist,
815 * {@code 0} is returned.
816 *
817 * @param key an <code>Object</code> specifying the int
818 * @return the int
819 * @throws NullPointerException if {@code key} is {@code null}
820 */
821 public static int getInt(Object key) {
822 return getDefaults().getInt(key);
823 }
824
825 /**
826 * Returns an integer from the defaults that is appropriate
827 * for the given locale. If the value for
828 * {@code key} is not an {@code Integer}, or does not exist,
829 * {@code 0} is returned.
830 *
831 * @param key an <code>Object</code> specifying the int
832 * @param l the <code>Locale</code> for which the int is desired; refer
833 * to {@code UIDefaults} for details on how a {@code null}
834 * {@code Locale} is handled
835 * @return the int
836 * @throws NullPointerException if {@code key} is {@code null}
837 * @since 1.4
838 */
839 public static int getInt(Object key, Locale l) {
840 return getDefaults().getInt(key,l);
841 }
842
843 /**
844 * Returns a boolean from the defaults which is associated with
845 * the key value. If the key is not found or the key doesn't represent
846 * a boolean value then {@code false} is returned.
847 *
848 * @param key an <code>Object</code> specifying the key for the desired boolean value
849 * @return the boolean value corresponding to the key
850 * @throws NullPointerException if {@code key} is {@code null}
851 * @since 1.4
852 */
853 public static boolean getBoolean(Object key) {
854 return getDefaults().getBoolean(key);
855 }
856
857 /**
858 * Returns a boolean from the defaults which is associated with
859 * the key value and the given <code>Locale</code>. If the key is not
860 * found or the key doesn't represent
861 * a boolean value then {@code false} will be returned.
862 *
863 * @param key an <code>Object</code> specifying the key for the desired
864 * boolean value
865 * @param l the <code>Locale</code> for which the boolean is desired; refer
866 * to {@code UIDefaults} for details on how a {@code null}
867 * {@code Locale} is handled
868 * @return the boolean value corresponding to the key
869 * @throws NullPointerException if {@code key} is {@code null}
870 * @since 1.4
871 */
872 public static boolean getBoolean(Object key, Locale l) {
873 return getDefaults().getBoolean(key,l);
874 }
875
876 /**
877 * Returns an <code>Insets</code> object from the defaults. If the value
878 * for {@code key} is not an {@code Insets}, {@code null} is returned.
879 *
880 * @param key an <code>Object</code> specifying the <code>Insets</code> object
881 * @return the <code>Insets</code> object
882 * @throws NullPointerException if {@code key} is {@code null}
883 */
884 public static Insets getInsets(Object key) {
885 return getDefaults().getInsets(key);
886 }
887
888 /**
889 * Returns an <code>Insets</code> object from the defaults that is
890 * appropriate for the given locale. If the value
891 * for {@code key} is not an {@code Insets}, {@code null} is returned.
892 *
893 * @param key an <code>Object</code> specifying the <code>Insets</code> object
894 * @param l the <code>Locale</code> for which the object is desired; refer
895 * to {@code UIDefaults} for details on how a {@code null}
896 * {@code Locale} is handled
897 * @return the <code>Insets</code> object
898 * @throws NullPointerException if {@code key} is {@code null}
899 * @since 1.4
900 */
901 public static Insets getInsets(Object key, Locale l) {
902 return getDefaults().getInsets(key,l);
903 }
904
905 /**
906 * Returns a dimension from the defaults. If the value
907 * for {@code key} is not a {@code Dimension}, {@code null} is returned.
908 *
909 * @param key an <code>Object</code> specifying the dimension object
910 * @return the <code>Dimension</code> object
911 * @throws NullPointerException if {@code key} is {@code null}
912 */
913 public static Dimension getDimension(Object key) {
914 return getDefaults().getDimension(key);
915 }
916
917 /**
918 * Returns a dimension from the defaults that is appropriate
919 * for the given locale. If the value
920 * for {@code key} is not a {@code Dimension}, {@code null} is returned.
921 *
922 * @param key an <code>Object</code> specifying the dimension object
923 * @param l the <code>Locale</code> for which the object is desired; refer
924 * to {@code UIDefaults} for details on how a {@code null}
925 * {@code Locale} is handled
926 * @return the <code>Dimension</code> object
927 * @throws NullPointerException if {@code key} is {@code null}
928 * @since 1.4
929 */
930 public static Dimension getDimension(Object key, Locale l) {
931 return getDefaults().getDimension(key,l);
932 }
933
934 /**
935 * Returns an object from the defaults.
936 *
937 * @param key an <code>Object</code> specifying the desired object
938 * @return the <code>Object</code>
939 * @throws NullPointerException if {@code key} is {@code null}
940 */
941 public static Object get(Object key) {
942 return getDefaults().get(key);
943 }
944
945 /**
946 * Returns an object from the defaults that is appropriate for
947 * the given locale.
948 *
949 * @param key an <code>Object</code> specifying the desired object
950 * @param l the <code>Locale</code> for which the object is desired; refer
951 * to {@code UIDefaults} for details on how a {@code null}
952 * {@code Locale} is handled
953 * @return the <code>Object</code>
954 * @throws NullPointerException if {@code key} is {@code null}
955 * @since 1.4
956 */
957 public static Object get(Object key, Locale l) {
958 return getDefaults().get(key,l);
959 }
960
961 /**
962 * Stores an object in the developer defaults. This is a cover method
963 * for {@code getDefaults().put(key, value)}. This only effects the
964 * developer defaults, not the system or look and feel defaults.
965 *
966 * @param key an <code>Object</code> specifying the retrieval key
967 * @param value the <code>Object</code> to store; refer to
968 * {@code UIDefaults} for details on how {@code null} is
969 * handled
970 * @return the <code>Object</code> returned by {@link UIDefaults#put}
971 * @throws NullPointerException if {@code key} is {@code null}
972 * @see UIDefaults#put
973 */
974 public static Object put(Object key, Object value) {
975 return getDefaults().put(key, value);
976 }
977
978 /**
979 * Returns the appropriate {@code ComponentUI} implementation for
980 * {@code target}. Typically, this is a cover for
981 * {@code getDefaults().getUI(target)}. However, if an auxiliary
982 * look and feel has been installed, this first invokes
983 * {@code getUI(target)} on the multiplexing look and feel's
984 * defaults, and returns that value if it is {@code non-null}.
985 *
986 * @param target the <code>JComponent</code> to return the
987 * {@code ComponentUI} for
988 * @return the <code>ComponentUI</code> object for {@code target}
989 * @throws NullPointerException if {@code target} is {@code null}
990 * @see UIDefaults#getUI
991 */
992 public static ComponentUI getUI(JComponent target) {
993 maybeInitialize();
994 ComponentUI ui = null;
995 LookAndFeel multiLAF = getLAFState().multiLookAndFeel;
996 if (multiLAF != null) {
997 // This can return null if the multiplexing look and feel
998 // doesn't support a particular UI.
999 ui = multiLAF.getDefaults().getUI(target);
1000 }
1001 if (ui == null) {
1002 ui = getDefaults().getUI(target);
1003 }
1004 return ui;
1005 }
1006
1007
1008 /**
1009 * Returns the {@code UIDefaults} from the current look and feel,
1010 * that were obtained at the time the look and feel was installed.
1011 * <p>
1012 * In general, developers should use the {@code UIDefaults} returned from
1013 * {@code getDefaults()}. As the current look and feel may expect
1014 * certain values to exist, altering the {@code UIDefaults} returned
1015 * from this method could have unexpected results.
1016 *
1017 * @return <code>UIDefaults</code> from the current look and feel
1018 * @see #getDefaults
1019 * @see #setLookAndFeel(LookAndFeel)
1020 * @see LookAndFeel#getDefaults
1021 */
1022 public static UIDefaults getLookAndFeelDefaults() {
1023 maybeInitialize();
1024 return getLAFState().getLookAndFeelDefaults();
1025 }
1026
1027 /**
1028 * Finds the Multiplexing <code>LookAndFeel</code>.
1029 */
1030 private static LookAndFeel getMultiLookAndFeel() {
1031 LookAndFeel multiLookAndFeel = getLAFState().multiLookAndFeel;
1032 if (multiLookAndFeel == null) {
1033 String defaultName = "javax.swing.plaf.multi.MultiLookAndFeel";
1034 String className = getLAFState().swingProps.getProperty(multiplexingLAFKey, defaultName);
1035 try {
1036 Class lnfClass = SwingUtilities.loadSystemClass(className);
1037 multiLookAndFeel = (LookAndFeel)lnfClass.newInstance();
1038 } catch (Exception exc) {
1039 System.err.println("UIManager: failed loading " + className);
1040 }
1041 }
1042 return multiLookAndFeel;
1043 }
1044
1045 /**
1046 * Adds a <code>LookAndFeel</code> to the list of auxiliary look and feels.
1047 * The auxiliary look and feels tell the multiplexing look and feel what
1048 * other <code>LookAndFeel</code> classes for a component instance are to be used
1049 * in addition to the default <code>LookAndFeel</code> class when creating a
1050 * multiplexing UI. The change will only take effect when a new
1051 * UI class is created or when the default look and feel is changed
1052 * on a component instance.
1053 * <p>Note these are not the same as the installed look and feels.
1054 *
1055 * @param laf the <code>LookAndFeel</code> object
1056 * @see #removeAuxiliaryLookAndFeel
1057 * @see #setLookAndFeel
1058 * @see #getAuxiliaryLookAndFeels
1059 * @see #getInstalledLookAndFeels
1060 */
1061 static public void addAuxiliaryLookAndFeel(LookAndFeel laf) {
1062 maybeInitialize();
1063
1064 if (!laf.isSupportedLookAndFeel()) {
1065 // Ideally we would throw an exception here, but it's too late
1066 // for that.
1067 return;
1068 }
1069 Vector<LookAndFeel> v = getLAFState().auxLookAndFeels;
1070 if (v == null) {
1071 v = new Vector<LookAndFeel>();
1072 }
1073
1074 if (!v.contains(laf)) {
1075 v.addElement(laf);
1076 laf.initialize();
1077 getLAFState().auxLookAndFeels = v;
1078
1079 if (getLAFState().multiLookAndFeel == null) {
1080 getLAFState().multiLookAndFeel = getMultiLookAndFeel();
1081 }
1082 }
1083 }
1084
1085 /**
1086 * Removes a <code>LookAndFeel</code> from the list of auxiliary look and feels.
1087 * The auxiliary look and feels tell the multiplexing look and feel what
1088 * other <code>LookAndFeel</code> classes for a component instance are to be used
1089 * in addition to the default <code>LookAndFeel</code> class when creating a
1090 * multiplexing UI. The change will only take effect when a new
1091 * UI class is created or when the default look and feel is changed
1092 * on a component instance.
1093 * <p>Note these are not the same as the installed look and feels.
1094 * @return true if the <code>LookAndFeel</code> was removed from the list
1095 * @see #removeAuxiliaryLookAndFeel
1096 * @see #getAuxiliaryLookAndFeels
1097 * @see #setLookAndFeel
1098 * @see #getInstalledLookAndFeels
1099 */
1100 static public boolean removeAuxiliaryLookAndFeel(LookAndFeel laf) {
1101 maybeInitialize();
1102
1103 boolean result;
1104
1105 Vector<LookAndFeel> v = getLAFState().auxLookAndFeels;
1106 if ((v == null) || (v.size() == 0)) {
1107 return false;
1108 }
1109
1110 result = v.removeElement(laf);
1111 if (result) {
1112 if (v.size() == 0) {
1113 getLAFState().auxLookAndFeels = null;
1114 getLAFState().multiLookAndFeel = null;
1115 } else {
1116 getLAFState().auxLookAndFeels = v;
1117 }
1118 }
1119 laf.uninitialize();
1120
1121 return result;
1122 }
1123
1124 /**
1125 * Returns the list of auxiliary look and feels (can be <code>null</code>).
1126 * The auxiliary look and feels tell the multiplexing look and feel what
1127 * other <code>LookAndFeel</code> classes for a component instance are
1128 * to be used in addition to the default LookAndFeel class when creating a
1129 * multiplexing UI.
1130 * <p>Note these are not the same as the installed look and feels.
1131 *
1132 * @return list of auxiliary <code>LookAndFeel</code>s or <code>null</code>
1133 * @see #addAuxiliaryLookAndFeel
1134 * @see #removeAuxiliaryLookAndFeel
1135 * @see #setLookAndFeel
1136 * @see #getInstalledLookAndFeels
1137 */
1138 static public LookAndFeel[] getAuxiliaryLookAndFeels() {
1139 maybeInitialize();
1140
1141 Vector<LookAndFeel> v = getLAFState().auxLookAndFeels;
1142 if ((v == null) || (v.size() == 0)) {
1143 return null;
1144 }
1145 else {
1146 LookAndFeel[] rv = new LookAndFeel[v.size()];
1147 for (int i = 0; i < rv.length; i++) {
1148 rv[i] = v.elementAt(i);
1149 }
1150 return rv;
1151 }
1152 }
1153
1154
1155 /**
1156 * Adds a <code>PropertyChangeListener</code> to the listener list.
1157 * The listener is registered for all properties.
1158 *
1159 * @param listener the <code>PropertyChangeListener</code> to be added
1160 * @see java.beans.PropertyChangeSupport
1161 */
1162 public static void addPropertyChangeListener(PropertyChangeListener listener)
1163 {
1164 synchronized (classLock) {
1165 getLAFState().getPropertyChangeSupport(true).
1166 addPropertyChangeListener(listener);
1167 }
1168 }
1169
1170
1171 /**
1172 * Removes a <code>PropertyChangeListener</code> from the listener list.
1173 * This removes a <code>PropertyChangeListener</code> that was registered
1174 * for all properties.
1175 *
1176 * @param listener the <code>PropertyChangeListener</code> to be removed
1177 * @see java.beans.PropertyChangeSupport
1178 */
1179 public static void removePropertyChangeListener(PropertyChangeListener listener)
1180 {
1181 synchronized (classLock) {
1182 getLAFState().getPropertyChangeSupport(true).
1183 removePropertyChangeListener(listener);
1184 }
1185 }
1186
1187
1188 /**
1189 * Returns an array of all the <code>PropertyChangeListener</code>s added
1190 * to this UIManager with addPropertyChangeListener().
1191 *
1192 * @return all of the <code>PropertyChangeListener</code>s added or an empty
1193 * array if no listeners have been added
1194 * @since 1.4
1195 */
1196 public static PropertyChangeListener[] getPropertyChangeListeners() {
1197 synchronized(classLock) {
1198 return getLAFState().getPropertyChangeSupport(true).
1199 getPropertyChangeListeners();
1200 }
1201 }
1202
1203 private static Properties loadSwingProperties()
1204 {
1205 /* Don't bother checking for Swing properties if untrusted, as
1206 * there's no way to look them up without triggering SecurityExceptions.
1207 */
1208 if (UIManager.class.getClassLoader() != null) {
1209 return new Properties();
1210 }
1211 else {
1212 final Properties props = new Properties();
1213
1214 java.security.AccessController.doPrivileged(
1215 new java.security.PrivilegedAction<Object>() {
1216 public Object run() {
1217 try {
1218 File file = new File(makeSwingPropertiesFilename());
1219
1220 if (file.exists()) {
1221 // InputStream has been buffered in Properties
1222 // class
1223 FileInputStream ins = new FileInputStream(file);
1224 props.load(ins);
1225 ins.close();
1226 }
1227 }
1228 catch (Exception e) {
1229 // No such file, or file is otherwise non-readable.
1230 }
1231
1232 // Check whether any properties were overridden at the
1233 // command line.
1234 checkProperty(props, defaultLAFKey);
1235 checkProperty(props, auxiliaryLAFsKey);
1236 checkProperty(props, multiplexingLAFKey);
1237 checkProperty(props, installedLAFsKey);
1238 checkProperty(props, disableMnemonicKey);
1239 // Don't care about return value.
1240 return null;
1241 }
1242 });
1243 return props;
1244 }
1245 }
1246
1247 private static void checkProperty(Properties props, String key) {
1248 // No need to do catch the SecurityException here, this runs
1249 // in a doPrivileged.
1250 String value = System.getProperty(key);
1251 if (value != null) {
1252 props.put(key, value);
1253 }
1254 }
1255
1256
1257 /**
1258 * If a swing.properties file exist and it has a swing.installedlafs property
1259 * then initialize the <code>installedLAFs</code> field.
1260 *
1261 * @see #getInstalledLookAndFeels
1262 */
1263 private static void initializeInstalledLAFs(Properties swingProps)
1264 {
1265 String ilafsString = swingProps.getProperty(installedLAFsKey);
1266 if (ilafsString == null) {
1267 return;
1268 }
1269
1270 /* Create a vector that contains the value of the swing.installedlafs
1271 * property. For example given "swing.installedlafs=motif,windows"
1272 * lafs = {"motif", "windows"}.
1273 */
1274 Vector<String> lafs = new Vector<String>();
1275 StringTokenizer st = new StringTokenizer(ilafsString, ",", false);
1276 while (st.hasMoreTokens()) {
1277 lafs.addElement(st.nextToken());
1278 }
1279
1280 /* Look up the name and class for each name in the "swing.installedlafs"
1281 * list. If they both exist then add a LookAndFeelInfo to
1282 * the installedLafs array.
1283 */
1284 Vector<LookAndFeelInfo> ilafs = new Vector<LookAndFeelInfo>(lafs.size());
1285 for (String laf : lafs) {
1286 String name = swingProps.getProperty(makeInstalledLAFKey(laf, "name"), laf);
1287 String cls = swingProps.getProperty(makeInstalledLAFKey(laf, "class"));
1288 if (cls != null) {
1289 ilafs.addElement(new LookAndFeelInfo(name, cls));
1290 }
1291 }
1292
1293 LookAndFeelInfo[] installedLAFs = new LookAndFeelInfo[ilafs.size()];
1294 for(int i = 0; i < ilafs.size(); i++) {
1295 installedLAFs[i] = ilafs.elementAt(i);
1296 }
1297 getLAFState().installedLAFs = installedLAFs;
1298 }
1299
1300
1301 /**
1302 * If the user has specified a default look and feel, use that.
1303 * Otherwise use the look and feel that's native to this platform.
1304 * If this code is called after the application has explicitly
1305 * set it's look and feel, do nothing.
1306 *
1307 * @see #maybeInitialize
1308 */
1309 private static void initializeDefaultLAF(Properties swingProps)
1310 {
1311 if (getLAFState().lookAndFeel != null) {
1312 return;
1313 }
1314
1315 // Try to get default LAF from system property, then from AppContext
1316 // (6653395), then use cross-platform one by default.
1317 String lafName = null;
1318 HashMap lafData =
1319 (HashMap) AppContext.getAppContext().remove("swing.lafdata");
1320 if (lafData != null) {
1321 lafName = (String) lafData.remove("defaultlaf");
1322 }
1323 if (lafName == null) {
1324 lafName = getCrossPlatformLookAndFeelClassName();
1325 }
1326 lafName = swingProps.getProperty(defaultLAFKey, lafName);
1327
1328 try {
1329 setLookAndFeel(lafName);
1330 } catch (Exception e) {
1331 throw new Error("Cannot load " + lafName);
1332 }
1333
1334 // Set any properties passed through AppContext (6653395).
1335 if (lafData != null) {
1336 for (Object key: lafData.keySet()) {
1337 UIManager.put(key, lafData.get(key));
1338 }
1339 }
1340 }
1341
1342
1343 private static void initializeAuxiliaryLAFs(Properties swingProps)
1344 {
1345 String auxLookAndFeelNames = swingProps.getProperty(auxiliaryLAFsKey);
1346 if (auxLookAndFeelNames == null) {
1347 return;
1348 }
1349
1350 Vector<LookAndFeel> auxLookAndFeels = new Vector<LookAndFeel>();
1351
1352 StringTokenizer p = new StringTokenizer(auxLookAndFeelNames,",");
1353 String factoryName;
1354
1355 /* Try to load each LookAndFeel subclass in the list.
1356 */
1357
1358 while (p.hasMoreTokens()) {
1359 String className = p.nextToken();
1360 try {
1361 Class lnfClass = SwingUtilities.loadSystemClass(className);
1362 LookAndFeel newLAF = (LookAndFeel)lnfClass.newInstance();
1363 newLAF.initialize();
1364 auxLookAndFeels.addElement(newLAF);
1365 }
1366 catch (Exception e) {
1367 System.err.println("UIManager: failed loading auxiliary look and feel " + className);
1368 }
1369 }
1370
1371 /* If there were problems and no auxiliary look and feels were
1372 * loaded, make sure we reset auxLookAndFeels to null.
1373 * Otherwise, we are going to use the MultiLookAndFeel to get
1374 * all component UI's, so we need to load it now.
1375 */
1376 if (auxLookAndFeels.size() == 0) {
1377 auxLookAndFeels = null;
1378 }
1379 else {
1380 getLAFState().multiLookAndFeel = getMultiLookAndFeel();
1381 if (getLAFState().multiLookAndFeel == null) {
1382 auxLookAndFeels = null;
1383 }
1384 }
1385
1386 getLAFState().auxLookAndFeels = auxLookAndFeels;
1387 }
1388
1389
1390 private static void initializeSystemDefaults(Properties swingProps) {
1391 getLAFState().swingProps = swingProps;
1392 }
1393
1394
1395 /*
1396 * This method is called before any code that depends on the
1397 * <code>AppContext</code> specific LAFState object runs. When the AppContext
1398 * corresponds to a set of applets it's possible for this method
1399 * to be re-entered, which is why we grab a lock before calling
1400 * initialize().
1401 */
1402 private static void maybeInitialize() {
1403 synchronized (classLock) {
1404 if (!getLAFState().initialized) {
1405 getLAFState().initialized = true;
1406 initialize();
1407 }
1408 }
1409 }
1410
1411
1412 /*
1413 * Only called by maybeInitialize().
1414 */
1415 private static void initialize() {
1416 Properties swingProps = loadSwingProperties();
1417 initializeSystemDefaults(swingProps);
1418 initializeDefaultLAF(swingProps);
1419 initializeAuxiliaryLAFs(swingProps);
1420 initializeInstalledLAFs(swingProps);
1421
1422 // Enable the Swing default LayoutManager.
1423 String toolkitName = Toolkit.getDefaultToolkit().getClass().getName();
1424 // don't set default policy if this is XAWT.
1425 if (!"sun.awt.X11.XToolkit".equals(toolkitName)) {
1426 if (FocusManager.isFocusManagerEnabled()) {
1427 KeyboardFocusManager.getCurrentKeyboardFocusManager().
1428 setDefaultFocusTraversalPolicy(
1429 new LayoutFocusTraversalPolicy());
1430 }
1431 }
1432
1433 // Install Swing's PaintEventDispatcher
1434 if (RepaintManager.HANDLE_TOP_LEVEL_PAINT) {
1435 sun.awt.PaintEventDispatcher.setPaintEventDispatcher(
1436 new SwingPaintEventDispatcher());
1437 }
1438 // Install a hook that will be invoked if no one consumes the
1439 // KeyEvent. If the source isn't a JComponent this will process
1440 // key bindings, if the source is a JComponent it implies that
1441 // processKeyEvent was already invoked and thus no need to process
1442 // the bindings again, unless the Component is disabled, in which
1443 // case KeyEvents will no longer be dispatched to it so that we
1444 // handle it here.
1445 KeyboardFocusManager.getCurrentKeyboardFocusManager().
1446 addKeyEventPostProcessor(new KeyEventPostProcessor() {
1447 public boolean postProcessKeyEvent(KeyEvent e) {
1448 Component c = e.getComponent();
1449
1450 if ((!(c instanceof JComponent) ||
1451 (c != null && !c.isEnabled())) &&
1452 JComponent.KeyboardState.shouldProcess(e) &&
1453 SwingUtilities.processKeyBindings(e)) {
1454 e.consume();
1455 return true;
1456 }
1457 return false;
1458 }
1459 });
1460 AWTAccessor.getComponentAccessor().
1461 setRequestFocusController(JComponent.focusController);
1462 }
1463 }