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1   /*
2    * Copyright (c) 2006 Stiftung Deutsches Elektronen-Synchroton,
3    * Member of the Helmholtz Association, (DESY), HAMBURG, GERMANY.
4    *
5    * THIS SOFTWARE IS PROVIDED UNDER THIS LICENSE ON AN "../AS IS" BASIS.
6    * WITHOUT WARRANTY OF ANY KIND, EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED
7    * TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR PARTICULAR PURPOSE AND
8    * NON-INFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
9    * FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
10   * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR
11   * THE USE OR OTHER DEALINGS IN THE SOFTWARE. SHOULD THE SOFTWARE PROVE DEFECTIVE
12   * IN ANY RESPECT, THE USER ASSUMES THE COST OF ANY NECESSARY SERVICING, REPAIR OR
13   * CORRECTION. THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL PART OF THIS LICENSE.
14   * NO USE OF ANY SOFTWARE IS AUTHORIZED HEREUNDER EXCEPT UNDER THIS DISCLAIMER.
15   * DESY HAS NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS,
16   * OR MODIFICATIONS.
17   * THE FULL LICENSE SPECIFYING FOR THE SOFTWARE THE REDISTRIBUTION, MODIFICATION,
18   * USAGE AND OTHER RIGHTS AND OBLIGATIONS IS INCLUDED WITH THE DISTRIBUTION OF THIS
19   * PROJECT IN THE FILE LICENSE.HTML. IF THE LICENSE IS NOT INCLUDED YOU MAY FIND A COPY
20   * AT HTTP://WWW.DESY.DE/LEGAL/LICENSE.HTM
21   */
22  
23  package de.desy.acop.displayers.tools;
24  
25  import java.util.EventListener;
26  
27  import de.desy.acop.displayers.AcopTrendChart;
28  
29  /**
30   * <code>AcopTrendChartListener</code> receives notifications from the 
31   * <code>AcopTrendChart</code>. The listener receives reports about the 
32   * progress or errors that occured during the trend chart operation.
33   * 
34   * @author <a href="mailto:jaka.bobnar@cosylab.com">Jaka Bobnar</a>
35   * @version $Id: Templates.xml,v 1.10 2004/01/13 16:17:13 jbobnar Exp $
36   * @see AcopTrendChart
37   */
38  public interface AcopTrendChartListener extends EventListener {
39  	
40  	/**
41  	 * Reports progress on </code>AcopTrendChart</code> operations.
42  	 * @param e an </code>AcopTrendChartEvent</code>
43  	 */
44  	public void reportProgress(AcopTrendChartEvent e);
45  	
46  	/**
47  	 * Reports errors. If returned boolean is </code>true</code>, then current action 
48  	 * is repeated.
49  	 * @param e an </code>AcopTrendChartEvent</code>
50  	 * @return </code>true</code> if current action should be repeated
51  	 */
52  	public boolean reportError(AcopTrendChartEvent e);
53  }