001 /* This file is part of the project "Hilbert II" - http://www.qedeq.org
002 *
003 * Copyright 2000-2014, Michael Meyling <mime@qedeq.org>.
004 *
005 * "Hilbert II" is free software; you can redistribute
006 * it and/or modify it under the terms of the GNU General Public
007 * License as published by the Free Software Foundation; either
008 * version 2 of the License, or (at your option) any later version.
009 *
010 * This program is distributed in the hope that it will be useful,
011 * but WITHOUT ANY WARRANTY; without even the implied warranty of
012 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
013 * GNU General Public License for more details.
014 */
015
016 package org.qedeq.kernel.xml.handler.module;
017
018 import org.qedeq.kernel.se.base.module.Node;
019 import org.qedeq.kernel.se.dto.module.NodeVo;
020 import org.qedeq.kernel.xml.common.XmlSyntaxException;
021 import org.qedeq.kernel.xml.handler.common.AbstractSimpleHandler;
022 import org.qedeq.kernel.xml.handler.common.SimpleAttributes;
023
024
025 /**
026 * Handles node data.
027 *
028 * @author Michael Meyling
029 */
030 public class NodeHandler extends AbstractSimpleHandler {
031
032 /** Handler for node name. The node name is a visible, language specific node reference,
033 * e.g. "Axiom of Choice" or "is set". */
034 private final LatexListHandler nameHandler;
035
036 /** Handler for title. This is simply the title of this subsection. */
037 private final LatexListHandler titleHandler;
038
039 /** Handler for the formula preceding text. */
040 private final LatexListHandler precedingHandler;
041
042 /** Handler for the formula succeeding text. */
043 private final LatexListHandler succeedingHandler;
044
045 /** Handler for an axiom. */
046 private final AxiomHandler axiomHandler;
047
048 /** Handler for an initial predicate definition. */
049 private final InitialPredicateDefinitionHandler initialPredicateDefinitionHandler;
050
051 /** Handler for a predicate definition. */
052 private final PredicateDefinitionHandler predicateDefinitionHandler;
053
054 /** Handler for a function definition. */
055 private final FunctionDefinitionHandler functionDefinitionHandler;
056
057 /** Handler for a initial function definition. */
058 private final InitialFunctionDefinitionHandler initialFunctionDefinitionHandler;
059
060 /** Handler for a proposition. */
061 private final PropositionHandler propositionHandler;
062
063 /** Handler for a rule. */
064 private final RuleHandler ruleHandler;
065
066 /** Node value object. */
067 private NodeVo node;
068
069
070 /**
071 * Constructor.
072 *
073 * @param handler Parent handler.
074 */
075 public NodeHandler(final AbstractSimpleHandler handler) {
076 super(handler, "NODE");
077 nameHandler = new LatexListHandler(this, "NAME");
078 titleHandler = new LatexListHandler(this, "TITLE");
079 precedingHandler = new LatexListHandler(this, "PRECEDING");
080 succeedingHandler = new LatexListHandler(this, "SUCCEEDING");
081 axiomHandler = new AxiomHandler(this);
082 initialPredicateDefinitionHandler = new InitialPredicateDefinitionHandler(this);
083 predicateDefinitionHandler = new PredicateDefinitionHandler(this);
084 functionDefinitionHandler = new FunctionDefinitionHandler(this);
085 initialFunctionDefinitionHandler = new InitialFunctionDefinitionHandler(this);
086 propositionHandler = new PropositionHandler(this);
087 ruleHandler = new RuleHandler(this);
088 }
089
090 public final void init() {
091 node = null;
092 }
093
094 /**
095 * Get node.
096 *
097 * @return Node.
098 */
099 public final Node getNode() {
100 return node;
101 }
102
103 public final void startElement(final String name, final SimpleAttributes attributes)
104 throws XmlSyntaxException {
105 if (getStartTag().equals(name)) {
106 node = new NodeVo();
107 node.setId(attributes.getString("id"));
108 node.setLevel(attributes.getString("level"));
109 } else if (nameHandler.getStartTag().equals(name)) {
110 changeHandler(nameHandler, name, attributes);
111 } else if (titleHandler.getStartTag().equals(name)) {
112 changeHandler(titleHandler, name, attributes);
113 } else if (precedingHandler.getStartTag().equals(name)) {
114 changeHandler(precedingHandler, name, attributes);
115 } else if (succeedingHandler.getStartTag().equals(name)) {
116 changeHandler(succeedingHandler, name, attributes);
117 } else if (axiomHandler.getStartTag().equals(name)) {
118 changeHandler(axiomHandler, name, attributes);
119 } else if (initialPredicateDefinitionHandler.getStartTag().equals(name)) {
120 changeHandler(initialPredicateDefinitionHandler, name, attributes);
121 } else if (predicateDefinitionHandler.getStartTag().equals(name)) {
122 changeHandler(predicateDefinitionHandler, name, attributes);
123 } else if (functionDefinitionHandler.getStartTag().equals(name)) {
124 changeHandler(functionDefinitionHandler, name, attributes);
125 } else if (initialFunctionDefinitionHandler.getStartTag().equals(name)) {
126 changeHandler(initialFunctionDefinitionHandler, name, attributes);
127 } else if (propositionHandler.getStartTag().equals(name)) {
128 changeHandler(propositionHandler, name, attributes);
129 } else if (ruleHandler.getStartTag().equals(name)) {
130 changeHandler(ruleHandler, name, attributes);
131 } else {
132 throw XmlSyntaxException.createUnexpectedTagException(name);
133 }
134 }
135
136 public void endElement(final String name) throws XmlSyntaxException {
137 if (getStartTag().equals(name)) {
138 // thats why we handle it
139 } else if (nameHandler.getStartTag().equals(name)) {
140 node.setName(nameHandler.getLatexList());
141 } else if (titleHandler.getStartTag().equals(name)) {
142 node.setTitle(titleHandler.getLatexList());
143 } else if (precedingHandler.getStartTag().equals(name)) {
144 node.setPrecedingText(precedingHandler.getLatexList());
145 } else if (succeedingHandler.getStartTag().equals(name)) {
146 node.setSucceedingText(succeedingHandler.getLatexList());
147 } else if (axiomHandler.getStartTag().equals(name)) {
148 node.setNodeType(axiomHandler.getAxiom());
149 } else if (initialPredicateDefinitionHandler.getStartTag().equals(name)) {
150 node.setNodeType(initialPredicateDefinitionHandler.getInitialDefinition());
151 } else if (predicateDefinitionHandler.getStartTag().equals(name)) {
152 node.setNodeType(predicateDefinitionHandler.getDefinition());
153 } else if (functionDefinitionHandler.getStartTag().equals(name)) {
154 node.setNodeType(functionDefinitionHandler.getDefinition());
155 } else if (initialFunctionDefinitionHandler.getStartTag().equals(name)) {
156 node.setNodeType(initialFunctionDefinitionHandler.getDefinition());
157 } else if (propositionHandler.getStartTag().equals(name)) {
158 node.setNodeType(propositionHandler.getProposition());
159 } else if (ruleHandler.getStartTag().equals(name)) {
160 node.setNodeType(ruleHandler.getRule());
161 } else {
162 throw XmlSyntaxException.createUnexpectedTagException(name);
163 }
164 }
165
166 }
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