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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.FormalProofVo;
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 proposition.
26   *
27   * @author  Michael Meyling
28   */
29  public class FormalProofHandler extends AbstractSimpleHandler {
30  
31      /** Handle formal proofs. */
32      private final FormalProofLineListHandler formalProofLineListHandler;
33  
34      /** Value object. */
35      private FormalProofVo proof;
36  
37      /**
38       * Deals with propositions.
39       *
40       * @param   handler Parent handler.
41       */
42      public FormalProofHandler(final AbstractSimpleHandler handler) {
43          super(handler, "FORMAL_PROOF");
44          formalProofLineListHandler = new FormalProofLineListHandler(this);
45      }
46  
47      public final void init() {
48          proof = null;
49      }
50  
51      /**
52       * Get proof.
53       *
54       * @return  Proof.
55       */
56      public final FormalProofVo getProof() {
57          return proof;
58      }
59  
60      public final void startElement(final String name, final SimpleAttributes attributes)
61              throws XmlSyntaxException {
62          if (getStartTag().equals(name)) {
63              proof = new FormalProofVo();
64          } else if (formalProofLineListHandler.getStartTag().equals(name)) {
65              changeHandler(formalProofLineListHandler, name, attributes);
66          } else {
67              throw XmlSyntaxException.createUnexpectedTagException(name);
68          }
69      }
70  
71      public final void endElement(final String name) throws XmlSyntaxException {
72          if (getStartTag().equals(name)) {
73              // nothing to do
74          } else if (formalProofLineListHandler.getStartTag().equals(name)) {
75              proof.setFormalProofLineList(formalProofLineListHandler.getFormalProofLineList());
76          } else {
77              throw XmlSyntaxException.createUnexpectedTagException(name);
78          }
79      }
80  
81  }