123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278 |
- /*
- * Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements. See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The ASF licenses this file to You under the Apache License, Version 2.0
- * (the "License"); you may not use this file except in compliance with
- * the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
- /* $Id$ */
-
- package org.apache.fop.layoutengine;
-
- import java.util.Iterator;
- import java.util.List;
-
- import org.w3c.dom.CDATASection;
- import org.w3c.dom.Element;
- import org.w3c.dom.Node;
- import org.w3c.dom.NodeList;
- import org.w3c.dom.Text;
-
- import org.apache.fop.layoutmgr.KnuthBox;
- import org.apache.fop.layoutmgr.KnuthElement;
- import org.apache.fop.layoutmgr.KnuthGlue;
- import org.apache.fop.layoutmgr.KnuthPenalty;
-
- /**
- * Check implementation that checks a Knuth element list.
- */
- public class ElementListCheck implements LayoutEngineCheck {
-
- private String category;
- private String id;
- private int index = -1;
- private Element checkElement;
-
- /**
- * Creates a new instance from a DOM node.
- * @param node DOM node that defines this check
- */
- public ElementListCheck(Node node) {
- this.category = node.getAttributes().getNamedItem("category").getNodeValue();
- if (node.getAttributes().getNamedItem("id") != null) {
- this.id = node.getAttributes().getNamedItem("id").getNodeValue();
- }
- if (!haveID()) {
- if (node.getAttributes().getNamedItem("index") != null) {
- String s = node.getAttributes().getNamedItem("index").getNodeValue();
- this.index = Integer.parseInt(s);
- }
- }
- this.checkElement = (Element)node;
- }
-
- /**
- * @see org.apache.fop.layoutengine.LayoutEngineCheck
- */
- public void check(LayoutResult result) {
- ElementListCollector.ElementList elementList = findElementList(result);
- NodeList children = checkElement.getChildNodes();
- int pos = -1;
- for (int i = 0; i < children.getLength(); i++) {
- Node node = children.item(i);
- if (node instanceof Element) {
- pos++;
- Element domEl = (Element)node;
- KnuthElement knuthEl = (KnuthElement)elementList.getElementList().get(pos);
- if ("skip".equals(domEl.getLocalName())) {
- pos += Integer.parseInt(getElementText(domEl)) - 1;
- } else if ("box".equals(domEl.getLocalName())) {
- if (!(knuthEl instanceof KnuthBox)) {
- fail("Expected KnuthBox"
- + " at position " + pos
- + " but got: " + knuthEl.getClass().getName());
- }
- if (domEl.getAttribute("w").length() > 0) {
- int w = Integer.parseInt(domEl.getAttribute("w"));
- if (w != knuthEl.getWidth()) {
- fail("Expected w=" + w
- + " at position " + pos
- + " but got: " + knuthEl.getWidth());
- }
- }
- if ("true".equals(domEl.getAttribute("aux"))) {
- if (!knuthEl.isAuxiliary()) {
- fail("Expected auxiliary box"
- + " at position " + pos);
- }
- }
- if ("false".equals(domEl.getAttribute("aux"))) {
- if (knuthEl.isAuxiliary()) {
- fail("Expected a normal, not an auxiliary box"
- + " at position " + pos);
- }
- }
- } else if ("penalty".equals(domEl.getLocalName())) {
- if (!(knuthEl instanceof KnuthPenalty)) {
- fail("Expected KnuthPenalty "
- + " at position " + pos
- + " but got: " + knuthEl.getClass().getName());
- }
- KnuthPenalty pen = (KnuthPenalty)knuthEl;
- if (domEl.getAttribute("w").length() > 0) {
- int w = Integer.parseInt(domEl.getAttribute("w"));
- if (w != knuthEl.getWidth()) {
- fail("Expected w=" + w
- + " at position " + pos
- + " but got: " + knuthEl.getWidth());
- }
- }
- if (domEl.getAttribute("p").length() > 0) {
- if ("<0".equals(domEl.getAttribute("p"))) {
- if (knuthEl.getPenalty() >= 0) {
- fail("Expected p<0"
- + " at position " + pos
- + " but got: " + knuthEl.getPenalty());
- }
- } else if (">0".equals(domEl.getAttribute("p"))) {
- if (knuthEl.getPenalty() <= 0) {
- fail("Expected p>0"
- + " at position " + pos
- + " but got: " + knuthEl.getPenalty());
- }
- } else {
- int p;
- if ("INF".equalsIgnoreCase(domEl.getAttribute("p"))) {
- p = KnuthPenalty.INFINITE;
- } else if ("INFINITE".equalsIgnoreCase(domEl.getAttribute("p"))) {
- p = KnuthPenalty.INFINITE;
- } else if ("-INF".equalsIgnoreCase(domEl.getAttribute("p"))) {
- p = -KnuthPenalty.INFINITE;
- } else if ("-INFINITE".equalsIgnoreCase(domEl.getAttribute("p"))) {
- p = -KnuthPenalty.INFINITE;
- } else {
- p = Integer.parseInt(domEl.getAttribute("p"));
- }
- if (p != knuthEl.getPenalty()) {
- fail("Expected p=" + p
- + " at position " + pos
- + " but got: " + knuthEl.getPenalty());
- }
- }
- }
- if ("true".equals(domEl.getAttribute("flagged"))) {
- if (!pen.isPenaltyFlagged()) {
- fail("Expected flagged penalty"
- + " at position " + pos);
- }
- } else if ("false".equals(domEl.getAttribute("flagged"))) {
- if (pen.isPenaltyFlagged()) {
- fail("Expected non-flagged penalty"
- + " at position " + pos);
- }
- }
- if ("true".equals(domEl.getAttribute("aux"))) {
- if (!pen.isAuxiliary()) {
- fail("Expected auxiliary penalty"
- + " at position " + pos);
- }
- } else if ("false".equals(domEl.getAttribute("aux"))) {
- if (pen.isAuxiliary()) {
- fail("Expected non-auxiliary penalty"
- + " at position " + pos);
- }
- }
- } else if ("glue".equals(domEl.getLocalName())) {
- if (!(knuthEl instanceof KnuthGlue)) {
- fail("Expected KnuthGlue"
- + " at position " + pos
- + " but got: " + knuthEl.getClass().getName());
- }
- KnuthGlue glue = (KnuthGlue)knuthEl;
- if (domEl.getAttribute("w").length() > 0) {
- int w = Integer.parseInt(domEl.getAttribute("w"));
- if (w != knuthEl.getWidth()) {
- fail("Expected w=" + w
- + " at position " + pos
- + " but got: " + knuthEl.getWidth());
- }
- }
- if (domEl.getAttribute("y").length() > 0) {
- int stretch = Integer.parseInt(domEl.getAttribute("y"));
- if (stretch != knuthEl.getStretch()) {
- fail("Expected y=" + stretch
- + " (stretch) at position " + pos
- + " but got: " + knuthEl.getStretch());
- }
- }
- if (domEl.getAttribute("z").length() > 0) {
- int shrink = Integer.parseInt(domEl.getAttribute("z"));
- if (shrink != knuthEl.getShrink()) {
- fail("Expected z=" + shrink
- + " (shrink) at position " + pos
- + " but got: " + knuthEl.getShrink());
- }
- }
- } else {
- throw new IllegalArgumentException("Invalid child node for 'element-list': "
- + domEl.getLocalName()
- + " at position " + pos + " (" + this + ")");
- }
-
- }
- }
- pos++;
- if (elementList.getElementList().size() > pos) {
- fail("There are "
- + (elementList.getElementList().size() - pos)
- + " unchecked elements at the end of the list");
- }
- }
-
- private void fail(String msg) {
- throw new RuntimeException(msg + " (" + this + ")");
- }
-
- private boolean haveID() {
- return (this.id != null && this.id.length() > 0);
- }
-
- private ElementListCollector.ElementList findElementList(LayoutResult result) {
- List candidates = new java.util.ArrayList();
- Iterator iter = result.getElementListCollector().getElementLists().iterator();
- while (iter.hasNext()) {
- ElementListCollector.ElementList el = (ElementListCollector.ElementList)iter.next();
- if (el.getCategory().equals(category)) {
- if (haveID() && this.id.equals(el.getID())) {
- candidates.add(el);
- break;
- } else if (!haveID()) {
- candidates.add(el);
- }
- }
- }
- if (candidates.size() == 0) {
- throw new ArrayIndexOutOfBoundsException("Requested element list not found");
- } else if (index >= 0) {
- return (ElementListCollector.ElementList)candidates.get(index);
- } else {
- return (ElementListCollector.ElementList)candidates.get(0);
- }
- }
-
- private static String getElementText(Element el) {
- StringBuffer sb = new StringBuffer();
- NodeList children = el.getChildNodes();
- for (int i = 0; i < children.getLength(); i++) {
- Node node = children.item(i);
- if (node instanceof Text) {
- sb.append(((Text)node).getData());
- } else if (node instanceof CDATASection) {
- sb.append(((CDATASection)node).getData());
- }
- }
- return sb.toString();
- }
-
- /** @see java.lang.Object#toString() */
- public String toString() {
- StringBuffer sb = new StringBuffer("element-list");
- sb.append(" category=").append(category);
- if (haveID()) {
- sb.append(" id=").append(id);
- } else if (index >= 0) {
- sb.append(" index=").append(index);
- }
- return sb.toString();
- }
- }
|