uimaj-2.2.0-incubating/uimaj-tools/src/main/java/org/apache/uima/tools/jcasgen/Waiter.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.apache.uima.tools.jcasgen;

public class Waiter {
  private boolean wokeUpIntentionally = false;

  private final Object waitObject = new Object();

  void waitforGUI() {
    synchronized (waitObject) {
      wokeUpIntentionally = false;
      while (wokeUpIntentionally == false) {
        try {
          waitObject.wait();
        } catch (InterruptedException e) {
          // this will never occur
          e.printStackTrace();
        }
      }
    }
  }

  void finished() {
    synchronized (waitObject) {
      wokeUpIntentionally = true;
      waitObject.notifyAll();
    }
  }
}