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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.Map;
-
- import org.xml.sax.Locator;
-
- import org.apache.fop.apps.FOPException;
- import org.apache.fop.datatypes.Numeric;
- import org.apache.fop.fo.FONode;
- import org.apache.fop.fo.FObj;
- import org.apache.fop.fo.PropertyList;
- import org.apache.fop.fo.ValidationException;
-
- /**
- * Implementation of the fo:page-sequence formatting object.
- */
- public class PageSequence extends FObj {
-
- // The value of properties relevant for fo:page-sequence.
- private String country;
- private String format;
- private String language;
- private int letterValue;
- private char groupingSeparator;
- private int groupingSize;
- private String id;
- private Numeric initialPageNumber;
- private int forcePageCount;
- private String masterReference;
- // End of property values
-
- /** The parent root object */
- private Root root;
-
- // There doesn't seem to be anything in the spec requiring flows
- // to be in the order given, only that they map to the regions
- // defined in the page sequence, so all we need is this one hashmap
- // the set of flows includes StaticContent flows also
-
- /** Map of flows to their flow name (flow-name, Flow) */
- private Map flowMap;
-
- private int startingPageNumber = 0;
- private PageNumberGenerator pageNumberGenerator;
-
- /**
- * The currentSimplePageMaster is either the page master for the
- * whole page sequence if master-reference refers to a simple-page-master,
- * or the simple page master produced by the page sequence master otherwise.
- * The pageSequenceMaster is null if master-reference refers to a
- * simple-page-master.
- */
- private SimplePageMaster simplePageMaster;
- private PageSequenceMaster pageSequenceMaster;
-
- /**
- * The fo:title object for this page-sequence.
- */
- private Title titleFO;
-
- /**
- * The fo:flow object for this page-sequence.
- */
- private Flow mainFlow = null;
-
- /**
- * Create a page sequence FO node.
- *
- * @param parent the parent FO node
- */
- public PageSequence(FONode parent) {
- super(parent);
- }
-
- /**
- * @see org.apache.fop.fo.FObj#bind(PropertyList)
- */
- public void bind(PropertyList pList) throws FOPException {
- country = pList.get(PR_COUNTRY).getString();
- format = pList.get(PR_FORMAT).getString();
- language = pList.get(PR_LANGUAGE).getString();
- letterValue = pList.get(PR_LETTER_VALUE).getEnum();
- groupingSeparator = pList.get(PR_GROUPING_SEPARATOR).getCharacter();
- groupingSize = pList.get(PR_GROUPING_SIZE).getNumber().intValue();
- id = pList.get(PR_ID).getString();
- initialPageNumber = pList.get(PR_INITIAL_PAGE_NUMBER).getNumeric();
- forcePageCount = pList.get(PR_FORCE_PAGE_COUNT).getEnum();
- masterReference = pList.get(PR_MASTER_REFERENCE).getString();
-
- if (masterReference == null || masterReference.equals("")) {
- missingPropertyError("master-reference");
- }
- }
-
- /**
- * @see org.apache.fop.fo.FONode#startOfNode()
- */
- protected void startOfNode() throws FOPException {
- this.root = (Root) parent;
- flowMap = new java.util.HashMap();
-
- this.simplePageMaster = root.getLayoutMasterSet().getSimplePageMaster(masterReference);
- if (this.simplePageMaster == null) {
- this.pageSequenceMaster
- = root.getLayoutMasterSet().getPageSequenceMaster(masterReference);
- if (this.pageSequenceMaster == null) {
- throw new ValidationException("master-reference '" + masterReference
- + "' for fo:page-sequence matches no"
- + " simple-page-master or page-sequence-master", locator);
- } else {
- pageSequenceMaster.reset();
- }
- }
-
- this.pageNumberGenerator = new PageNumberGenerator(
- format, groupingSeparator, groupingSize, letterValue);
-
- checkId(id);
- getFOEventHandler().startPageSequence(this);
- }
-
- /** @see org.apache.fop.fo.FONode#endOfNode() */
- protected void endOfNode() throws FOPException {
- if (mainFlow == null) {
- missingChildElementError("(title?,static-content*,flow)");
- }
-
- getFOEventHandler().endPageSequence(this);
- }
-
- /**
- * @see org.apache.fop.fo.FONode#validateChildNode(Locator, String, String)
- XSL Content Model: (title?,static-content*,flow)
- */
- protected void validateChildNode(Locator loc, String nsURI, String localName)
- throws ValidationException {
- if (FO_URI.equals(nsURI)) {
- if (localName.equals("title")) {
- if (titleFO != null) {
- tooManyNodesError(loc, "fo:title");
- } else if (flowMap.size() > 0) {
- nodesOutOfOrderError(loc, "fo:title", "fo:static-content");
- } else if (mainFlow != null) {
- nodesOutOfOrderError(loc, "fo:title", "fo:flow");
- }
- } else if (localName.equals("static-content")) {
- if (mainFlow != null) {
- nodesOutOfOrderError(loc, "fo:static-content", "fo:flow");
- }
- } else if (localName.equals("flow")) {
- if (mainFlow != null) {
- tooManyNodesError(loc, "fo:flow");
- }
- } else {
- invalidChildError(loc, nsURI, localName);
- }
- } else {
- invalidChildError(loc, nsURI, localName);
- }
- }
-
- /**
- * @see org.apache.fop.fo.FONode#addChildNode(FONode)
- * @todo see if addChildNode() should also be called for fo's other than
- * fo:flow.
- */
- public void addChildNode(FONode child) throws FOPException {
- int childId = child.getNameId();
-
- if (childId == FO_TITLE) {
- this.titleFO = (Title) child;
- } else if (childId == FO_FLOW) {
- this.mainFlow = (Flow) child;
- addFlow(mainFlow);
- } else if (childId == FO_STATIC_CONTENT) {
- addFlow((StaticContent) child);
- String flowName = ((StaticContent) child).getFlowName();
- flowMap.put(flowName, child);
- }
- }
-
- /**
- * Add a flow or static content, mapped by its flow-name.
- * The flow-name is used to associate the flow with a region on a page,
- * based on the region-names given to the regions in the page-master
- * used to generate that page.
- */
- private void addFlow(Flow flow) throws ValidationException {
- String flowName = flow.getFlowName();
-
- if (hasFlowName(flowName)) {
- throw new ValidationException("duplicate flow-name \""
- + flowName
- + "\" found within fo:page-sequence", flow.getLocator());
- }
-
- if (!root.getLayoutMasterSet().regionNameExists(flowName)
- && !flowName.equals("xsl-before-float-separator")
- && !flowName.equals("xsl-footnote-separator")) {
- throw new ValidationException("flow-name \""
- + flowName
- + "\" could not be mapped to a region-name in the"
- + " layout-master-set", flow.getLocator());
- }
- }
-
- /**
- * Initialize the current page number for the start of the page sequence.
- */
- public void initPageNumber() {
- int pageNumberType = 0;
-
- if (initialPageNumber.getEnum() != 0) {
- // auto | auto-odd | auto-even.
- startingPageNumber = root.getEndingPageNumberOfPreviousSequence() + 1;
- pageNumberType = initialPageNumber.getEnum();
- if (pageNumberType == EN_AUTO_ODD) {
- if (startingPageNumber % 2 == 0) {
- startingPageNumber++;
- }
- } else if (pageNumberType == EN_AUTO_EVEN) {
- if (startingPageNumber % 2 == 1) {
- startingPageNumber++;
- }
- }
- } else { // <integer> for explicit page number
- int pageStart = initialPageNumber.getValue();
- startingPageNumber = (pageStart > 0) ? pageStart : 1; // spec rule
- }
- }
-
- // /**
- // * Returns true when there is more flow elements left to lay out.
- // */
- // private boolean flowsAreIncomplete() {
- // boolean isIncomplete = false;
-
- // for (Iterator e = flowMap.values().iterator(); e.hasNext(); ) {
- // Flow flow = (Flow)e.next();
- // if (flow instanceof StaticContent) {
- // continue;
- // }
-
- // Status status = flow.getStatus();
- // isIncomplete |= status.isIncomplete();
- // }
- // return isIncomplete;
- // }
-
- // /**
- // * Returns the flow that maps to the given region class for the current
- // * page master.
- // */
- // private Flow getCurrentFlow(String regionClass) {
- // Region region = getCurrentSimplePageMaster().getRegion(regionClass);
- // if (region != null) {
- // Flow flow = (Flow)flowMap.get(region.getRegionName());
- // return flow;
-
- // } else {
-
- // getLogger().error("flow is null. regionClass = '" + regionClass
- // + "' currentSPM = "
- // + getCurrentSimplePageMaster());
-
- // return null;
- // }
-
- // }
-
- // private boolean isFlowForMasterNameDone(String masterName) {
- // // parameter is master-name of PMR; we need to locate PM
- // // referenced by this, and determine whether flow(s) are OK
- // if (isForcing)
- // return false;
- // if (masterName != null) {
-
- // SimplePageMaster spm =
- // root.getLayoutMasterSet().getSimplePageMaster(masterName);
- // Region region = spm.getRegion(FO_REGION_BODY);
-
-
- // Flow flow = (Flow)flowMap.get(region.getRegionName());
- // /*if ((null == flow) || flow.getStatus().isIncomplete())
- // return false;
- // else
- // return true;*/
- // }
- // return false;
- // }
-
- /**
- * Get the starting page number for this page sequence.
- *
- * @return the starting page number
- */
- public int getStartingPageNumber() {
- return startingPageNumber;
- }
-
- // private void forcePage(AreaTree areaTree, int firstAvailPageNumber) {
- // boolean makePage = false;
- // if (this.forcePageCount == ForcePageCount.AUTO) {
- // PageSequence nextSequence =
- // this.root.getSucceedingPageSequence(this);
- // if (nextSequence != null) {
- // if (nextSequence.getIpnValue().equals("auto")) {
- // // do nothing special
- // }
- // else if (nextSequence.getIpnValue().equals("auto-odd")) {
- // if (firstAvailPageNumber % 2 == 0) {
- // makePage = true;
- // }
- // } else if (nextSequence.getIpnValue().equals("auto-even")) {
- // if (firstAvailPageNumber % 2 != 0) {
- // makePage = true;
- // }
- // } else {
- // int nextSequenceStartPageNumber =
- // nextSequence.getCurrentPageNumber();
- // if ((nextSequenceStartPageNumber % 2 == 0)
- // && (firstAvailPageNumber % 2 == 0)) {
- // makePage = true;
- // } else if ((nextSequenceStartPageNumber % 2 != 0)
- // && (firstAvailPageNumber % 2 != 0)) {
- // makePage = true;
- // }
- // }
- // }
- // } else if ((this.forcePageCount == ForcePageCount.EVEN)
- // && (this.pageCount % 2 != 0)) {
- // makePage = true;
- // } else if ((this.forcePageCount == ForcePageCount.ODD)
- // && (this.pageCount % 2 == 0)) {
- // makePage = true;
- // } else if ((this.forcePageCount == ForcePageCount.END_ON_EVEN)
- // && (firstAvailPageNumber % 2 == 0)) {
- // makePage = true;
- // } else if ((this.forcePageCount == ForcePageCount.END_ON_ODD)
- // && (firstAvailPageNumber % 2 != 0)) {
- // makePage = true;
- // } else if (this.forcePageCount == ForcePageCount.NO_FORCE) {
- // // do nothing
- // }
-
- // if (makePage) {
- // try {
- // this.isForcing = true;
- // this.currentPageNumber++;
- // firstAvailPageNumber = this.currentPageNumber;
- // currentPage = makePage(areaTree, firstAvailPageNumber, false,
- // true);
- // String formattedPageNumber =
- // pageNumberGenerator.makeFormattedPageNumber(this.currentPageNumber);
- // currentPage.setFormattedNumber(formattedPageNumber);
- // currentPage.setPageSequence(this);
- // formatStaticContent(areaTree);
- // log.debug("[forced-" + firstAvailPageNumber + "]");
- // areaTree.addPage(currentPage);
- // this.root.setRunningPageNumberCounter(this.currentPageNumber);
- // this.isForcing = false;
- // } catch (FOPException fopex) {
- // log.debug("'force-page-count' failure");
- // }
- // }
- // }
-
- /**
- * Get the static content FO node from the flow map.
- * This gets the static content flow for the given flow name.
- *
- * @param name the flow name to find
- * @return the static content FO node
- */
- public StaticContent getStaticContent(String name) {
- return (StaticContent) flowMap.get(name);
- }
-
- /** @return the "id" property. */
- public String getId() {
- return id;
- }
-
- /**
- * Accessor method for titleFO
- * @return titleFO for this object
- */
- public Title getTitleFO() {
- return titleFO;
- }
-
- /**
- * Public accessor for getting the MainFlow to which this PageSequence is
- * attached.
- * @return the MainFlow object to which this PageSequence is attached.
- */
- public Flow getMainFlow() {
- return mainFlow;
- }
-
- /**
- * Determine if this PageSequence already has a flow with the given flow-name
- * Used for validation of incoming fo:flow or fo:static-content objects
- * @param flowName The flow-name to search for
- * @return true if flow-name already defined within this page sequence,
- * false otherwise
- */
- public boolean hasFlowName(String flowName) {
- return flowMap.containsKey(flowName);
- }
-
- /** @return the flow map for this page-sequence */
- public Map getFlowMap() {
- return this.flowMap;
- }
-
- /**
- * Public accessor for determining the next page master to use within this page sequence.
- * @param page the page number of the page to be created
- * @param isFirstPage indicator whether this page is the first page of the
- * page sequence
- * @param isLastPage indicator whether this page is the last page of the
- * page sequence
- * @param isBlank indicator whether the page will be blank
- * @return the SimplePageMaster to use for this page
- * @throws FOPException if there's a problem determining the page master
- */
- public SimplePageMaster getNextSimplePageMaster(int page,
- boolean isFirstPage,
- boolean isLastPage,
- boolean isBlank) throws FOPException {
-
- if (pageSequenceMaster == null) {
- return simplePageMaster;
- }
- boolean isOddPage = ((page % 2) == 1);
- if (getLogger().isDebugEnabled()) {
- getLogger().debug("getNextSimplePageMaster(page=" + page
- + " isOdd=" + isOddPage
- + " isFirst=" + isFirstPage
- + " isLast=" + isLastPage
- + " isBlank=" + isBlank + ")");
- }
- return pageSequenceMaster.getNextSimplePageMaster(isOddPage,
- isFirstPage, isLastPage, isBlank);
- }
-
- /**
- * Used to set the "cursor position" for the page masters to the previous item.
- * @return true if there is a previous item, false if the current one was the first one.
- */
- public boolean goToPreviousSimplePageMaster() {
- if (pageSequenceMaster == null) {
- return true;
- } else {
- return pageSequenceMaster.goToPreviousSimplePageMaster();
- }
- }
-
- /** @return true if the page-sequence has a page-master with page-position="last" */
- public boolean hasPagePositionLast() {
- if (pageSequenceMaster == null) {
- return false;
- } else {
- return pageSequenceMaster.hasPagePositionLast();
- }
- }
-
- /**
- * Retrieves the string representation of a page number applicable
- * for this page sequence
- * @param pageNumber the page number
- * @return string representation of the page number
- */
- public String makeFormattedPageNumber(int pageNumber) {
- return pageNumberGenerator.makeFormattedPageNumber(pageNumber);
- }
-
- /**
- * Public accessor for the ancestor Root.
- * @return the ancestor Root
- */
- public Root getRoot() {
- return root;
- }
-
- /** @return the "master-reference" property. */
- public String getMasterReference() {
- return masterReference;
- }
-
- /** @see org.apache.fop.fo.FONode#getLocalName() */
- public String getLocalName() {
- return "page-sequence";
- }
-
- /** @see org.apache.fop.fo.FObj#getNameId() */
- public int getNameId() {
- return FO_PAGE_SEQUENCE;
- }
-
- /** @return the force-page-count value */
- public int getForcePageCount() {
- return forcePageCount;
- }
-
- /** @return the initial-page-number property value */
- public Numeric getInitialPageNumber() {
- return initialPageNumber;
- }
-
- /** @return the country property value */
- public String getCountry() {
- return this.country;
- }
-
- /** @return the language property value */
- public String getLanguage() {
- return this.language;
- }
-
- /**
- * Releases a page-sequence's children after the page-sequence has been fully processed.
- */
- public void releasePageSequence() {
- this.mainFlow = null;
- this.flowMap.clear();
- }
-
- }
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