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.basic;
21  
22  import org.crosswire.jsword.JSOtherMsg;
23  import org.crosswire.jsword.book.Book;
24  import org.crosswire.jsword.book.BookDriver;
25  import org.crosswire.jsword.book.BookException;
26  
27  /**
28   * The AbstractBookDriver class implements some BibleDriver methods, making a
29   * simple read-only BibleDriver.
30   * 
31   * @see gnu.lgpl.License The GNU Lesser General Public License for details.
32   * @author Joe Walker
33   */
34  public abstract class AbstractBookDriver implements BookDriver {
35      /*
36       * (non-Javadoc)
37       * 
38       * @see org.crosswire.jsword.book.BookDriver#isWritable()
39       */
40      public boolean isWritable() {
41          return false;
42      }
43  
44      /*
45       * (non-Javadoc)
46       * 
47       * @see
48       * org.crosswire.jsword.book.BookDriver#create(org.crosswire.jsword.book
49       * .Book, org.crosswire.jsword.book.events.WorkListener)
50       */
51      public Book create(Book source) throws BookException {
52          throw new BookException(JSOtherMsg.lookupText("This Book is read-only."));
53      }
54  
55      /*
56       * (non-Javadoc)
57       * 
58       * @see
59       * org.crosswire.jsword.book.BookDriver#isDeletable(org.crosswire.jsword
60       * .book.Book)
61       */
62      public boolean isDeletable(Book dead) {
63          return false;
64      }
65  
66      /*
67       * (non-Javadoc)
68       * 
69       * @see
70       * org.crosswire.jsword.book.BookDriver#delete(org.crosswire.jsword.book
71       * .Book)
72       */
73      public void delete(Book dead) throws BookException {
74          throw new BookException(JSOtherMsg.lookupText("This Book is read-only."));
75      }
76  
77      /*
78       * (non-Javadoc)
79       * 
80       * @see org.crosswire.jsword.book.BookProvider#getFirstBook()
81       */
82      public Book getFirstBook() {
83          Book[] books = getBooks();
84          return books == null || books.length == 0 ? null : books[0];
85      }
86  }
87