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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.xml.handler.module;
17  
18  import org.qedeq.kernel.se.dto.module.ChangedRuleVo;
19  import org.qedeq.kernel.xml.common.XmlSyntaxException;
20  import org.qedeq.kernel.xml.handler.common.AbstractSimpleHandler;
21  import org.qedeq.kernel.xml.handler.common.SimpleAttributes;
22  
23  
24  /**
25   * Parse a rule change.
26   *
27   * @author  Michael Meyling
28   */
29  public class ChangedRuleHandler extends LatexListHandler {
30  
31      /** Rule value object. */
32      private ChangedRuleVo rule;
33  
34      /**
35       * Deals with definitions.
36       *
37       * @param   handler Parent handler.
38       */
39      public ChangedRuleHandler(final AbstractSimpleHandler handler) {
40          super(handler, "CHANGED_RULE");
41      }
42  
43      public final void init() {
44          super.init();
45          rule = null;
46      }
47  
48      /**
49       * Get changed rule.
50       *
51       * @return  Rule.
52       */
53      public final ChangedRuleVo getChangedRule() {
54          return rule;
55      }
56  
57      public final void startElement(final String name, final SimpleAttributes attributes)
58              throws XmlSyntaxException {
59          if (getStartTag().equals(name)) {
60              rule = new ChangedRuleVo();
61              if (null != attributes.getString("name")) {
62                  rule.setName(attributes.getString("name"));
63              } else {
64                  throw XmlSyntaxException.createMissingAttributeException(name, "name");
65              }
66              if (null != attributes.getString("version")) {
67                  rule.setVersion(attributes.getString("version"));
68              } else {
69                  throw XmlSyntaxException.createMissingAttributeException(name, "version");
70              }
71          } else {
72              super.startElement(name, attributes);
73          }
74      }
75  
76      public final void endElement(final String name) throws XmlSyntaxException {
77          if (getStartTag().equals(name)) {
78              rule.setDescription(getLatexList());
79          } else {
80              super.endElement(name);
81          }
82      }
83  
84  
85  }