ProgressEventSupport


1   /*
2    * The contents of this file are subject to the terms of the Common Development
3    * and Distribution License (the License). You may not use this file except in
4    * compliance with the License.
5    *
6    * You can obtain a copy of the License at http://www.netbeans.org/cddl.html
7    * or http://www.netbeans.org/cddl.txt.
8    *
9    * When distributing Covered Code, include this CDDL Header Notice in each file
10   * and include the License file at http://www.netbeans.org/cddl.txt.
11   * If applicable, add the following below the CDDL Header, with the fields
12   * enclosed by brackets [] replaced by your own identifying information:
13   * "Portions Copyrighted [year] [name of copyright owner]"
14   *
15   * The Original Software is NetBeans. The Initial Developer of the Original
16   * Software is Sun Microsystems, Inc. Portions Copyright 1997-2006 Sun
17   * Microsystems, Inc. All Rights Reserved.
18   */
19  
20  package org.netbeans.modules.tomcat5.progress;
21  
22  import javax.enterprise.deploy.spi.TargetModuleID  ;
23  import javax.enterprise.deploy.spi.status.DeploymentStatus  ;
24  import javax.enterprise.deploy.spi.status.ProgressEvent  ;
25  import javax.enterprise.deploy.spi.status.ProgressListener  ;
26  import org.netbeans.modules.tomcat5.TomcatFactory;
27  import org.openide.ErrorManager;
28  
29  /**
30   * This is a utility class that can be used by ProgressObject's,
31   * You can use an instance of this class as a member field
32   * of your ProgressObject and delegate various work to it.
33   *
34   * @author  Radim Kubacki
35   */
36  public class ProgressEventSupport {
37  
38      /** Source object. */
39      private Object   obj;
40      
41      private java.util.Vector   listeners;
42      
43      private DeploymentStatus   status;
44      
45      /**
46       * Constructs a <code>ProgressEventSupport</code> object.
47       *
48       * @param o Source for any events.
49       */
50      public ProgressEventSupport (Object   o) {
51          if (o == null) {
52              throw new NullPointerException   ();
53          }
54          obj = o;
55      }
56      
57      /** Add a ProgressListener to the listener list. */
58      public synchronized void addProgressListener (ProgressListener   lsnr) {
59          if (listeners == null) {
60              listeners = new java.util.Vector  ();
61          }
62          listeners.addElement(lsnr);
63      }
64      
65      /** Remove a ProgressListener from the listener list. */
66      public synchronized void removeProgressListener (ProgressListener   lsnr) {
67          if (listeners == null) {
68              return;
69          }
70          listeners.removeElement(lsnr);
71      }
72  
73      /** Report event to any registered listeners. */
74      public void fireHandleProgressEvent (TargetModuleID   targetModuleID, DeploymentStatus   sCode) {
75          if (TomcatFactory.getEM ().isLoggable (ErrorManager.INFORMATIONAL)) {
76              TomcatFactory.getEM ().log ("progress event from "+obj+" status "+sCode); // NOI18N
77          }
78          synchronized (this) {
79              status = sCode;
80          }
81          ProgressEvent   evt = new ProgressEvent   (obj, targetModuleID, sCode);
82      java.util.Vector   targets = null;
83      synchronized (this) {
84          if (listeners != null) {
85              targets = (java.util.Vector  ) listeners.clone();
86          }
87      }
88  
89      if (targets != null) {
90          for (int i = 0; i < targets.size(); i++) {
91              ProgressListener   target = (ProgressListener  )targets.elementAt(i);
92              target.handleProgressEvent (evt);
93          }
94      }
95      }
96      
97      /** Returns last DeploymentStatus notified by {@link fireHandleProgressEvent}
98       */
99      public synchronized DeploymentStatus   getDeploymentStatus () {
100         return status;
101     }
102 }
103
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