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- /*
- * 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.fo.pagination;
-
- // Java
- import java.util.ArrayList;
- import java.util.List;
-
- import org.xml.sax.Locator;
-
- import org.apache.fop.apps.FOPException;
- import org.apache.fop.fo.FONode;
- import org.apache.fop.fo.FObj;
- import org.apache.fop.fo.PropertyList;
- import org.apache.fop.fo.ValidationException;
- import org.apache.fop.fo.properties.Property;
- import org.apache.fop.layoutmgr.BlockLevelEventProducer;
-
- /**
- * Class modelling the <a href="http://www.w3.org/TR/xsl/#fo_repeatable-page-master-alternatives">
- * <code>fo:repeatable-page-master-alternatives</code></a> object.
- * This contains a list of conditional-page-master-reference
- * and the page master is found from the reference that
- * matches the page number and emptyness.
- */
- public class RepeatablePageMasterAlternatives extends FObj
- implements SubSequenceSpecifier {
- // The value of properties relevant for fo:repeatable-page-master-alternatives.
- private Property maximumRepeats;
- // End of property values
-
- private static final int INFINITE = -1;
-
- private int numberConsumed;
-
- private List<ConditionalPageMasterReference> conditionalPageMasterRefs;
- private boolean hasPagePositionLast;
- private boolean hasPagePositionOnly;
-
- /**
- * Base constructor
- *
- * @param parent {@link FONode} that is the parent of this object
- */
- public RepeatablePageMasterAlternatives(FONode parent) {
- super(parent);
- }
-
- /** {@inheritDoc} */
- public void bind(PropertyList pList) throws FOPException {
- maximumRepeats = pList.get(PR_MAXIMUM_REPEATS);
- }
-
- /** {@inheritDoc} */
- public void startOfNode() throws FOPException {
- conditionalPageMasterRefs = new java.util.ArrayList<ConditionalPageMasterReference>();
-
- assert parent.getName().equals("fo:page-sequence-master"); //Validation by the parent
- PageSequenceMaster pageSequenceMaster = (PageSequenceMaster)parent;
- pageSequenceMaster.addSubsequenceSpecifier(this);
- }
-
- /** {@inheritDoc} */
- public void endOfNode() throws FOPException {
- if (firstChild == null) {
- missingChildElementError("(conditional-page-master-reference+)");
- }
- }
-
- /**
- * {@inheritDoc}
- * <br>XSL/FOP: (conditional-page-master-reference+)
- */
- protected void validateChildNode(Locator loc, String nsURI, String localName)
- throws ValidationException {
- if (FO_URI.equals(nsURI)) {
- if (!localName.equals("conditional-page-master-reference")) {
- invalidChildError(loc, nsURI, localName);
- }
- }
- }
-
- /**
- * Get the value of the <code>maximum-repeats</code> property?
- * @return the "maximum-repeats" property
- */
- public int getMaximumRepeats() {
- if (maximumRepeats.getEnum() == EN_NO_LIMIT) {
- return INFINITE;
- } else {
- int mr = maximumRepeats.getNumeric().getValue();
- if (mr < 0) {
- log.debug("negative maximum-repeats: "
- + this.maximumRepeats);
- mr = 0;
- }
- return mr;
- }
- }
-
- /** {@inheritDoc} */
- public SimplePageMaster getNextPageMaster(boolean isOddPage,
- boolean isFirstPage,
- boolean isLastPage,
- boolean isBlankPage) {
-
- if (!isInfinite() && numberConsumed >= getMaximumRepeats()) {
- return null;
- }
-
- numberConsumed++;
-
- for (ConditionalPageMasterReference cpmr : conditionalPageMasterRefs) {
- if (cpmr.isValid(isOddPage, isFirstPage, isLastPage, isBlankPage)) {
- return cpmr.getMaster();
- }
- }
-
-
- return null;
- }
-
- public SimplePageMaster getLastPageMaster(boolean isOddPage, boolean isFirstPage, boolean isBlankPage,
- BlockLevelEventProducer blockLevelEventProducer) {
- for (ConditionalPageMasterReference cpmr : conditionalPageMasterRefs) {
- if (cpmr.isValid(isOddPage, isFirstPage, true, isBlankPage)) {
- return cpmr.getMaster();
- }
- }
- blockLevelEventProducer.lastPageMasterReferenceMissing(this, getLocator());
- for (ConditionalPageMasterReference cpmr : conditionalPageMasterRefs) {
- if (cpmr.isValid(isOddPage, isFirstPage, false, isBlankPage)) {
- return cpmr.getMaster();
- }
- }
- throw new PageProductionException("Last page master not found: oddpage=" + isOddPage
- + " firstpage=" + isFirstPage + " blankpage=" + isBlankPage);
- }
-
- /**
- * Adds a new conditional page master reference.
- * @param cpmr the new conditional reference
- */
- public void addConditionalPageMasterReference(ConditionalPageMasterReference cpmr) {
- this.conditionalPageMasterRefs.add(cpmr);
- if (cpmr.getPagePosition() == EN_LAST) {
- this.hasPagePositionLast = true;
- }
- if (cpmr.getPagePosition() == EN_ONLY) {
- this.hasPagePositionOnly = true;
- }
- }
-
- /** {@inheritDoc} */
- public void reset() {
- this.numberConsumed = 0;
- }
-
- /** {@inheritDoc} */
- public boolean goToPrevious() {
- if (numberConsumed == 0) {
- return false;
- } else {
- numberConsumed--;
- return true;
- }
- }
-
- /** {@inheritDoc} */
- public boolean hasPagePositionLast() {
- return this.hasPagePositionLast;
- }
-
- /** {@inheritDoc} */
- public boolean hasPagePositionOnly() {
- return this.hasPagePositionOnly;
- }
-
- /** {@inheritDoc} */
- public String getLocalName() {
- return "repeatable-page-master-alternatives";
- }
-
- /**
- * {@inheritDoc}
- * @return {@link org.apache.fop.fo.Constants#FO_REPEATABLE_PAGE_MASTER_ALTERNATIVES}
- */
- public int getNameId() {
- return FO_REPEATABLE_PAGE_MASTER_ALTERNATIVES;
- }
-
-
-
- /** {@inheritDoc} */
- public void resolveReferences(LayoutMasterSet layoutMasterSet) throws ValidationException {
- for (ConditionalPageMasterReference conditionalPageMasterReference
- : conditionalPageMasterRefs) {
- conditionalPageMasterReference.resolveReferences(layoutMasterSet);
- }
-
- }
-
- /** {@inheritDoc} */
- public boolean canProcess(String flowName) {
-
- boolean willTerminate = true;
-
-
- //Look for rest spm that cannot terminate
- ArrayList<ConditionalPageMasterReference> rest
- = new ArrayList<ConditionalPageMasterReference>();
- for (ConditionalPageMasterReference cpmr
- : conditionalPageMasterRefs) {
- if (cpmr.isValid(true, false, false, false)
- || cpmr.isValid(false, false, false, false)) {
- rest.add(cpmr);
- }
- }
- if (!rest.isEmpty()) {
- willTerminate = false;
- for (ConditionalPageMasterReference cpmr : rest) {
- willTerminate |= cpmr.getMaster().getRegion(FO_REGION_BODY).getRegionName()
- .equals(flowName);
- }
- }
-
-
- return willTerminate;
- }
-
- /** {@inheritDoc} */
- public boolean isInfinite() {
- return getMaximumRepeats() == INFINITE;
- }
-
- /** {@inheritDoc} */
- public boolean isReusable() {
- return false;
- }
-
- }
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