View Javadoc

1   /* This file is part of the project "Hilbert II" - http://www.qedeq.org" target="alexandria_uri">http://www.qedeq.org
2    *
3    * Copyright 2000-2014,  Michael Meyling <mime@qedeq.org>.
4    *
5    * "Hilbert II" is free software; you can redistribute
6    * it and/or modify it under the terms of the GNU General Public
7    * License as published by the Free Software Foundation; either
8    * version 2 of the License, or (at your option) any later version.
9    *
10   * This program is distributed in the hope that it will be useful,
11   * but WITHOUT ANY WARRANTY; without even the implied warranty of
12   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13   * GNU General Public License for more details.
14   */
15  
16  package org.qedeq.kernel.se.dto.module;
17  
18  import java.util.ArrayList;
19  import java.util.List;
20  
21  import org.qedeq.base.utility.EqualsUtility;
22  import org.qedeq.kernel.se.base.module.Latex;
23  import org.qedeq.kernel.se.base.module.LatexList;
24  
25  
26  /**
27   * List of LaTeX text parts.
28   *
29   * @author  Michael Meyling
30   */
31  public class LatexListVo implements LatexList {
32  
33      /** Contains all list elements. */
34      private final List list;
35  
36      /**
37       * Constructs an empty list of LaTeX text parts.
38       */
39      public LatexListVo() {
40          this.list = new ArrayList();
41      }
42  
43      /**
44       * Add language dependent LaTeX text to list.
45       *
46       * @param   latex   LaTeX text.
47       */
48      public final void add(final LatexVo latex) {
49          list.add(latex);
50      }
51  
52      public final int size() {
53          return list.size();
54      }
55  
56      public final Latex get(final int index) {
57          return (Latex) list.get(index);
58      }
59  
60      public boolean equals(final Object obj) {
61          if (!(obj instanceof LatexListVo)) {
62              return false;
63          }
64          final LatexListVo otherList = (LatexListVo) obj;
65          if (size() != otherList.size()) {
66              return false;
67          }
68          for (int i = 0; i < size(); i++) {
69              if (!EqualsUtility.equals(get(i), otherList.get(i))) {
70                  return false;
71              }
72          }
73          return true;
74      }
75  
76      public int hashCode() {
77          int hash = 0;
78          for (int i = 0; i < size(); i++) {
79              hash = hash ^ (i + 1);
80              if (get(i) != null) {
81                  hash = hash ^ get(i).hashCode();
82              }
83          }
84          return hash;
85      }
86  
87      public String toString() {
88          final StringBuffer buffer = new StringBuffer("Latex:\n");
89          for (int i = 0; i < size(); i++) {
90              if (i != 0) {
91                  buffer.append("\n");
92              }
93              buffer.append((i + 1) + ":\t");
94              buffer.append(get(i) != null ? get(i).toString() : null);
95          }
96          return buffer.toString();
97      }
98  
99  }