1   /**
2    * Distribution License:
3    * JSword is free software; you can redistribute it and/or modify it under
4    * the terms of the GNU Lesser General Public License, version 2.1 or later
5    * as published by the Free Software Foundation. This program is distributed
6    * in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even
7    * the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
8    * See the GNU Lesser General Public License for more details.
9    *
10   * The License is available on the internet at:
11   *      http://www.gnu.org/copyleft/lgpl.html
12   * or by writing to:
13   *      Free Software Foundation, Inc.
14   *      59 Temple Place - Suite 330
15   *      Boston, MA 02111-1307, USA
16   *
17   * © CrossWire Bible Society, 2005 - 2016
18   *
19   */
20  package org.crosswire.jsword.book.install;
21  
22  import java.util.EventListener;
23  
24  /**
25   * InstallerListener are able to be notified about changes to the numbers of
26   * Installers known to the system.
27   * 
28   * @see gnu.lgpl.License The GNU Lesser General Public License for details.
29   * @author Joe Walker
30   */
31  public interface InstallerListener extends EventListener {
32      /**
33       * Called whenever a new Installer is added to the system.
34       * 
35       * @param ev
36       *            A description of the change
37       */
38      void installerAdded(InstallerEvent ev);
39  
40      /**
41       * Called whenever an Installer is removed from the system.
42       * 
43       * @param ev
44       *            A description of the change
45       */
46      void installerRemoved(InstallerEvent ev);
47  }
48