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 }