1 /*

     2  * Copyright 2007 Sun Microsystems, Inc.  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.  Sun designates this

     8  * particular file as subject to the "Classpath" exception as provided

     9  * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

    22  * CA 95054 USA or visit www.sun.com if you need additional information or

    23  * have any questions.

    24  */

    25 

    26 package sun.awt;

    27 

    28 import java.awt.Window;

    29 

    30 import java.lang.reflect.Field;

    31 

    32 import sun.util.logging.PlatformLogger;

    33 

    34 import java.security.AccessController;

    35 import java.security.PrivilegedAction;

    36 

    37 public class WindowAccessor {

    38 

    39     private static Class windowClass;

    40     private static Field fieldIsAutoRequestFocus;

    41     private static Field fieldIsTrayIconWindow;

    42 

    43     private static final PlatformLogger log = PlatformLogger.getLogger("sun.awt.WindowAccessor");

    44 

    45     private WindowAccessor() {

    46     }

    47 

    48     static {

    49         AccessController.doPrivileged( new PrivilegedAction() {

    50                 public Object run() {

    51                     try {

    52                         windowClass = Class.forName("java.awt.Window");

    53                         fieldIsAutoRequestFocus = windowClass.getDeclaredField("autoRequestFocus");

    54                         fieldIsAutoRequestFocus.setAccessible(true);

    55                         fieldIsTrayIconWindow = windowClass.getDeclaredField("isTrayIconWindow");

    56                         fieldIsTrayIconWindow.setAccessible(true);

    57 

    58                     } catch (NoSuchFieldException e) {

    59                         log.fine("Unable to initialize WindowAccessor: ", e);

    60                     } catch (ClassNotFoundException e) {

    61                         log.fine("Unable to initialize WindowAccessor: ", e);

    62                     }

    63                     return null;

    64                 }

    65             });

    66     }

    67 

    68     public static boolean isAutoRequestFocus(Window w) {

    69         try {

    70             return fieldIsAutoRequestFocus.getBoolean(w);

    71 

    72         } catch (IllegalAccessException e) {

    73             log.fine("Unable to access the Window object", e);

    74         }

    75         return true;

    76     }

    77 

    78     public static boolean isTrayIconWindow(Window w) {

    79         try {

    80             return fieldIsTrayIconWindow.getBoolean(w);

    81 

    82         } catch (IllegalAccessException e) {

    83             log.fine("Unable to access the Window object", e);

    84         }

    85         return false;

    86     }

    87 

    88     public static void setTrayIconWindow(Window w, boolean isTrayIconWindow) {

    89         try {

    90             fieldIsTrayIconWindow.set(w, isTrayIconWindow);

    91 

    92         } catch (IllegalAccessException e) {

    93             log.fine("Unable to access the Window object", e);

    94         }

    95     }

    96 }