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51 package org.apache.fop.fo;
52
53 import org.apache.fop.messaging.MessageHandler;
54
55 import org.apache.fop.apps.FOPException;
56
57 import org.xml.sax.Attributes  ;
58
59 import java.util.HashMap ;
60
61 public class PropertyListBuilder {
62
63
66 private static final String FONTSIZEATTR = "font-size";
67
68 private HashMap propertyListTable;
69 private HashMap elementTable;
70
71 public PropertyListBuilder() {
72 this.propertyListTable = new HashMap ();
73 this.elementTable = new HashMap ();
74 }
75
76 public void addList(HashMap list) {
77 propertyListTable.putAll(list);
78 }
79
80 public void addElementList(String element, HashMap list) {
81 elementTable.put(element, list);
82 }
83
84 public Property computeProperty(PropertyList propertyList, String space,
85 String element, String propertyName) {
86
87 Property p = null;
88 Property.Maker propertyMaker = findMaker(space, element,
89 propertyName);
90 if (propertyMaker != null) {
91 try {
92 p = propertyMaker.compute(propertyList);
93 } catch (FOPException e) {
94 MessageHandler.errorln("exception occurred while computing"
95 + " value of property '"
96 + propertyName + "': "
97 + e.getMessage());
98 }
99 } else {
100 MessageHandler.errorln("property " + propertyName
101 + " ignored");
102 }
103 return p;
104 }
105
106 public boolean isInherited(String space, String element,
107 String propertyName) {
108 boolean b;
109
110 Property.Maker propertyMaker = findMaker(space, element,
111 propertyName);
112 if (propertyMaker != null) {
113 b = propertyMaker.isInherited();
114 } else {
115 b = true;
117 }
118 return b;
119 }
120
121 public PropertyList makeList(String ns, String elementName, Attributes attributes,
122 PropertyList parentPropertyList,
123 FObj parentFO) throws FOPException {
124 String space = "http://www.w3.org/TR/1999/XSL/Format";
125 if (ns != null) {
126 space = ns;
127 }
128
129 PropertyList par = null;
130 if (parentPropertyList != null
131 && space.equals(parentPropertyList.getNameSpace())) {
132 par = parentPropertyList;
133 }
134 PropertyList p = new PropertyList(par, space,
135 elementName);
136 p.setBuilder(this);
137 HashMap table;
138 table = (HashMap )elementTable.get(elementName);
139
140
141 StringBuffer propsDone = new StringBuffer (256);
142 propsDone.append(' ');
143
144
150 String fontsizeval = attributes.getValue(FONTSIZEATTR);
151 if (fontsizeval != null) {
152 Property.Maker propertyMaker = findMaker(table, FONTSIZEATTR);
153 if (propertyMaker != null) {
154 try {
155 p.put(FONTSIZEATTR,
156 propertyMaker.make(p, fontsizeval, parentFO));
157 } catch (FOPException e) {}
158 }
159 propsDone.append(FONTSIZEATTR + ' ');
161 }
162
163 for (int i = 0; i < attributes.getLength(); i++) {
164 String attributeName = attributes.getQName(i);
165
166 int sepchar = attributeName.indexOf('.');
167 String propName = attributeName;
168 String subpropName = null;
169 Property propVal = null;
170 if (sepchar > -1) {
171 propName = attributeName.substring(0, sepchar);
172 subpropName = attributeName.substring(sepchar + 1);
173 } else if (propsDone.toString().indexOf(' ' + propName + ' ')
174 != -1) {
175 continue;
178 }
179
180 Property.Maker propertyMaker = findMaker(table, propName);
181
182 if (propertyMaker != null) {
183 try {
184 if (subpropName != null) {
185 Property baseProp = p.getExplicitBaseProp(propName);
186 if (baseProp == null) {
187 String baseValue = attributes.getValue(propName);
189 if (baseValue != null) {
190 baseProp = propertyMaker.make(p, baseValue,
191 parentFO);
192 propsDone.append(propName + ' ');
193 }
194 }
196 propVal = propertyMaker.make(baseProp, subpropName,
197 p,
198 attributes.getValue(i),
199 parentFO);
200 } else {
201 propVal = propertyMaker.make(p,
202 attributes.getValue(i),
203 parentFO);
204 }
205 if (propVal != null) {
206 p.put(propName, propVal);
207 }
208 } catch (FOPException e) {
209 MessageHandler.errorln(e.getMessage());
210 }
211 } else {
212 if (!attributeName.startsWith("xmlns"))
213 MessageHandler.errorln("property '"
214 + attributeName + "' ignored");
215 }
216 }
217
218 return p;
219 }
220
221 public Property getSubpropValue(String space, String element,
222 String propertyName, Property p,
223 String subpropName) {
224 Property.Maker maker = findMaker(space, element, propertyName);
225 if (maker != null) {
226 return maker.getSubpropValue(p, subpropName);
227 } else
228 return null;
229 }
230
231
232 public boolean isCorrespondingForced(PropertyList propertyList,
233 String space, String element,
234 String propertyName) {
235 Property.Maker propertyMaker = findMaker(space, element,
236 propertyName);
237 if (propertyMaker != null) {
238 return propertyMaker.isCorrespondingForced(propertyList);
239 } else {
240 MessageHandler.errorln("no Maker for " + propertyName);
241 }
242 return false;
243 }
244
245 public Property getShorthand(PropertyList propertyList, String space,
246 String element, String propertyName) {
247 Property.Maker propertyMaker = findMaker(space, element,
248 propertyName);
249 if (propertyMaker != null) {
250 return propertyMaker.getShorthand(propertyList);
251 } else {
252 MessageHandler.errorln("no Maker for " + propertyName);
253 return null;
254 }
255 }
256
257
258 public Property makeProperty(PropertyList propertyList, String space,
259 String element,
260 String propertyName) throws FOPException {
261
262 Property p = null;
263
264 Property.Maker propertyMaker = findMaker(space, element,
265 propertyName);
266 if (propertyMaker != null) {
267 p = propertyMaker.make(propertyList);
268 } else {
269 MessageHandler.errorln("property " + propertyName
270 + " ignored");
271 }
272 return p;
273 }
274
275 protected Property.Maker findMaker(String space, String elementName,
276 String propertyName) {
277 return findMaker((HashMap )elementTable.get(elementName),
278 propertyName);
279 }
280
281
289 private Property.Maker findMaker(HashMap elemTable,
290 String propertyName) {
291 Property.Maker propertyMaker = null;
292 if (elemTable != null) {
293 propertyMaker = (Property.Maker)elemTable.get(propertyName);
294 }
295 if (propertyMaker == null) {
296 propertyMaker =
297 (Property.Maker)propertyListTable.get(propertyName);
298 }
299 return propertyMaker;
300 }
301
302 }
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