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19
20 package org.apache.fop.layoutengine;
21
22 import java.util.Iterator  ;
23 import java.util.List ;
24
25 import org.apache.fop.layoutmgr.KnuthBox;
26 import org.apache.fop.layoutmgr.KnuthElement;
27 import org.apache.fop.layoutmgr.KnuthGlue;
28 import org.apache.fop.layoutmgr.KnuthPenalty;
29 import org.w3c.dom.CDATASection ;
30 import org.w3c.dom.Element ;
31 import org.w3c.dom.Node ;
32 import org.w3c.dom.NodeList ;
33 import org.w3c.dom.Text ;
34
35
38 public class ElementListCheck implements LayoutEngineCheck {
39
40 private String category;
41 private String id;
42 private int index = -1;
43 private Element checkElement;
44
45
49 public ElementListCheck(Node node) {
50 this.category = node.getAttributes().getNamedItem("category").getNodeValue();
51 if (node.getAttributes().getNamedItem("id") != null) {
52 this.id = node.getAttributes().getNamedItem("id").getNodeValue();
53 }
54 if (!haveID()) {
55 if (node.getAttributes().getNamedItem("index") != null) {
56 String s = node.getAttributes().getNamedItem("index").getNodeValue();
57 this.index = Integer.parseInt(s);
58 }
59 }
60 this.checkElement = (Element)node;
61 }
62
63
66 public void check(LayoutResult result) {
67 ElementListCollector.ElementList elementList = findElementList(result);
68 NodeList children = checkElement.getChildNodes();
69 int pos = -1;
70 for (int i = 0; i < children.getLength(); i++) {
71 Node node = children.item(i);
72 if (node instanceof Element) {
73 pos++;
74 Element domEl = (Element)node;
75 KnuthElement knuthEl = (KnuthElement)elementList.getElementList().get(pos);
76 if ("skip".equals(domEl.getLocalName())) {
77 pos += Integer.parseInt(getElementText(domEl)) - 1;
78 } else if ("box".equals(domEl.getLocalName())) {
79 if (!(knuthEl instanceof KnuthBox)) {
80 fail("Expected KnuthBox"
81 + " at position " + pos
82 + " but got: " + knuthEl.getClass().getName());
83 }
84 if (domEl.getAttribute("w").length() > 0) {
85 int w = Integer.parseInt(domEl.getAttribute("w"));
86 if (w != knuthEl.getW()) {
87 fail("Expected w=" + w
88 + " at position " + pos
89 + " but got: " + knuthEl.getW());
90 }
91 }
92 if ("true".equals(domEl.getAttribute("aux"))) {
93 if (!knuthEl.isAuxiliary()) {
94 fail("Expected auxiliary box"
95 + " at position " + pos);
96 }
97 }
98 if ("false".equals(domEl.getAttribute("aux"))) {
99 if (knuthEl.isAuxiliary()) {
100 fail("Expected a normal, not an auxiliary box"
101 + " at position " + pos);
102 }
103 }
104 } else if ("penalty".equals(domEl.getLocalName())) {
105 if (!(knuthEl instanceof KnuthPenalty)) {
106 fail("Expected KnuthPenalty "
107 + " at position " + pos
108 + " but got: " + knuthEl.getClass().getName());
109 }
110 KnuthPenalty pen = (KnuthPenalty)knuthEl;
111 if (domEl.getAttribute("w").length() > 0) {
112 int w = Integer.parseInt(domEl.getAttribute("w"));
113 if (w != knuthEl.getW()) {
114 fail("Expected w=" + w
115 + " at position " + pos
116 + " but got: " + knuthEl.getW());
117 }
118 }
119 if (domEl.getAttribute("p").length() > 0) {
120 if ("<0".equals(domEl.getAttribute("p"))) {
121 if (knuthEl.getP() >= 0) {
122 fail("Expected p<0"
123 + " at position " + pos
124 + " but got: " + knuthEl.getP());
125 }
126 } else if (">0".equals(domEl.getAttribute("p"))) {
127 if (knuthEl.getP() <= 0) {
128 fail("Expected p>0"
129 + " at position " + pos
130 + " but got: " + knuthEl.getP());
131 }
132 } else {
133 int p;
134 if ("INF".equalsIgnoreCase(domEl.getAttribute("p"))) {
135 p = KnuthPenalty.INFINITE;
136 } else if ("INFINITE".equalsIgnoreCase(domEl.getAttribute("p"))) {
137 p = KnuthPenalty.INFINITE;
138 } else if ("-INF".equalsIgnoreCase(domEl.getAttribute("p"))) {
139 p = -KnuthPenalty.INFINITE;
140 } else if ("-INFINITE".equalsIgnoreCase(domEl.getAttribute("p"))) {
141 p = -KnuthPenalty.INFINITE;
142 } else {
143 p = Integer.parseInt(domEl.getAttribute("p"));
144 }
145 if (p != knuthEl.getP()) {
146 fail("Expected p=" + p
147 + " at position " + pos
148 + " but got: " + knuthEl.getP());
149 }
150 }
151 }
152 if ("true".equals(domEl.getAttribute("flagged"))) {
153 if (!pen.isFlagged()) {
154 fail("Expected flagged penalty"
155 + " at position " + pos);
156 }
157 } else if ("false".equals(domEl.getAttribute("flagged"))) {
158 if (pen.isFlagged()) {
159 fail("Expected non-flagged penalty"
160 + " at position " + pos);
161 }
162 }
163 if ("true".equals(domEl.getAttribute("aux"))) {
164 if (!pen.isAuxiliary()) {
165 fail("Expected auxiliary penalty"
166 + " at position " + pos);
167 }
168 } else if ("false".equals(domEl.getAttribute("aux"))) {
169 if (pen.isAuxiliary()) {
170 fail("Expected non-auxiliary penalty"
171 + " at position " + pos);
172 }
173 }
174 } else if ("glue".equals(domEl.getLocalName())) {
175 if (!(knuthEl instanceof KnuthGlue)) {
176 fail("Expected KnuthGlue"
177 + " at position " + pos
178 + " but got: " + knuthEl.getClass().getName());
179 }
180 KnuthGlue glue = (KnuthGlue)knuthEl;
181 if (domEl.getAttribute("w").length() > 0) {
182 int w = Integer.parseInt(domEl.getAttribute("w"));
183 if (w != knuthEl.getW()) {
184 fail("Expected w=" + w
185 + " at position " + pos
186 + " but got: " + knuthEl.getW());
187 }
188 }
189 if (domEl.getAttribute("y").length() > 0) {
190 int stretch = Integer.parseInt(domEl.getAttribute("y"));
191 if (stretch != knuthEl.getY()) {
192 fail("Expected y=" + stretch
193 + " (stretch) at position " + pos
194 + " but got: " + knuthEl.getY());
195 }
196 }
197 if (domEl.getAttribute("z").length() > 0) {
198 int shrink = Integer.parseInt(domEl.getAttribute("z"));
199 if (shrink != knuthEl.getZ()) {
200 fail("Expected z=" + shrink
201 + " (shrink) at position " + pos
202 + " but got: " + knuthEl.getZ());
203 }
204 }
205 } else {
206 throw new IllegalArgumentException ("Invalid child node for 'element-list': "
207 + domEl.getLocalName()
208 + " at position " + pos + " (" + this + ")");
209 }
210
211 }
212 }
213 pos++;
214 if (elementList.getElementList().size() > pos) {
215 fail("There are "
216 + (elementList.getElementList().size() - pos)
217 + " unchecked elements at the end of the list");
218 }
219 }
220
221 private void fail(String msg) {
222 throw new RuntimeException (msg + " (" + this + ")");
223 }
224
225 private boolean haveID() {
226 return (this.id != null && this.id.length() > 0);
227 }
228
229 private ElementListCollector.ElementList findElementList(LayoutResult result) {
230 List candidates = new java.util.ArrayList ();
231 Iterator iter = result.getElementListCollector().getElementLists().iterator();
232 while (iter.hasNext()) {
233 ElementListCollector.ElementList el = (ElementListCollector.ElementList)iter.next();
234 if (el.getCategory().equals(category)) {
235 if (haveID() && this.id.equals(el.getID())) {
236 candidates.add(el);
237 break;
238 } else if (!haveID()) {
239 candidates.add(el);
240 }
241 }
242 }
243 if (candidates.size() == 0) {
244 throw new ArrayIndexOutOfBoundsException ("Requested element list not found");
245 } else if (index >= 0) {
246 return (ElementListCollector.ElementList)candidates.get(index);
247 } else {
248 return (ElementListCollector.ElementList)candidates.get(0);
249 }
250 }
251
252 private static String getElementText(Element el) {
253 StringBuffer sb = new StringBuffer ();
254 NodeList children = el.getChildNodes();
255 for (int i = 0; i < children.getLength(); i++) {
256 Node node = children.item(i);
257 if (node instanceof Text ) {
258 sb.append(((Text )node).getData());
259 } else if (node instanceof CDATASection ) {
260 sb.append(((CDATASection )node).getData());
261 }
262 }
263 return sb.toString();
264 }
265
266
267 public String toString() {
268 StringBuffer sb = new StringBuffer ("element-list");
269 sb.append(" category=").append(category);
270 if (haveID()) {
271 sb.append(" id=").append(id);
272 } else if (index >= 0) {
273 sb.append(" index=").append(index);
274 }
275 return sb.toString();
276 }
277 }
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