1 /*

     2  * Copyright (c) 2007, 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.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  */

    23 

    24 import java.awt.Component;

    25 import java.awt.IllegalComponentStateException;

    26 

    27 public class Flag {

    28 

    29     public static final int ATTEMPTS = 50;

    30 

    31     private volatile boolean flag;

    32     private final Object monitor = new Object();

    33     private final long delay;

    34 

    35     public Flag() {

    36         this.delay = 500;

    37     }

    38 

    39     public void reset() {

    40         flag = false;

    41     }

    42 

    43     public void flagTriggered() {

    44         synchronized (monitor) {

    45             flag = true;

    46             monitor.notifyAll();

    47         }

    48     }

    49 

    50     public boolean flag() {

    51         return flag;

    52     }

    53 

    54     public void waitForFlagTriggered() throws InterruptedException {

    55         waitForFlagTriggered(delay, ATTEMPTS);

    56     }

    57 

    58     public void waitForFlagTriggered(int attempts) throws InterruptedException {

    59         waitForFlagTriggered(delay, attempts);

    60     }

    61 

    62     public void waitForFlagTriggered(long delay) throws InterruptedException {

    63         waitForFlagTriggered(delay, ATTEMPTS);

    64     }

    65 

    66     private void waitForFlagTriggered(long delay, int attempts) throws InterruptedException {

    67         int a = 0;

    68         synchronized (monitor) {

    69             while (!flag && (a++ < attempts)) {

    70                 monitor.wait(delay);

    71             }

    72         }

    73     }

    74 

    75     public static void waitTillShown(final Component comp) throws InterruptedException {

    76         while (true) {

    77             try {

    78                 Thread.sleep(100);

    79                 comp.getLocationOnScreen();

    80                 break;

    81             } catch (IllegalComponentStateException e) {}

    82         }

    83     }

    84 }