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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;
-
- // XML
- 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;
-
- /**
- * Class modelling the <a href="http://www.w3.org/TR/xsl/#fo_single-page-master-reference">
- * <code>fo:single-page-master-reference</code></a> object.
- * This is a reference for a single page. It returns the
- * master name only once until reset.
- */
- public class SinglePageMasterReference extends FObj
- implements SubSequenceSpecifier {
-
- // The value of properties relevant for fo:single-page-master-reference.
- private String masterReference;
- // End of property values
-
- private static final int FIRST = 0;
- private static final int DONE = 1;
-
- private int state;
-
- /**
- * Creates a new SinglePageMasterReference instance that is
- * a child of the given {@link FONode}.
- * @param parent {@link FONode} that is the parent of this object
- */
- public SinglePageMasterReference(FONode parent) {
- super(parent);
- this.state = FIRST;
- }
-
- /** {@inheritDoc} */
- public void bind(PropertyList pList) throws FOPException {
- masterReference = pList.get(PR_MASTER_REFERENCE).getString();
-
- if (masterReference == null || masterReference.equals("")) {
- missingPropertyError("master-reference");
- }
- }
-
- /** {@inheritDoc} */
- protected void startOfNode() throws FOPException {
- PageSequenceMaster pageSequenceMaster = (PageSequenceMaster) parent;
- pageSequenceMaster.addSubsequenceSpecifier(this);
- }
-
- /**
- * {@inheritDoc}
- * <br>XSL Content Model: empty
- */
- protected void validateChildNode(Locator loc, String nsURI, String localName)
- throws ValidationException {
- if (FO_URI.equals(nsURI)) {
- invalidChildError(loc, nsURI, localName);
- }
- }
-
- /** {@inheritDoc} */
- public String getNextPageMasterName(boolean isOddPage,
- boolean isFirstPage,
- boolean isLastPage,
- boolean isBlankPage) {
- if (this.state == FIRST) {
- this.state = DONE;
- return masterReference;
- } else {
- return null;
- }
- }
-
- /** {@inheritDoc} */
- public void reset() {
- this.state = FIRST;
- }
-
- /** {@inheritDoc} */
- public boolean goToPrevious() {
- if (state == FIRST) {
- return false;
- } else {
- this.state = FIRST;
- return true;
- }
- }
-
- /** {@inheritDoc} */
- public boolean hasPagePositionLast() {
- return false;
- }
-
- /** {@inheritDoc} */
- public boolean hasPagePositionOnly() {
- return false;
- }
-
- /** {@inheritDoc} */
- public String getLocalName() {
- return "single-page-master-reference";
- }
-
- /**
- * {@inheritDoc}
- * @return {@link org.apache.fop.fo.Constants#FO_SINGLE_PAGE_MASTER_REFERENCE}
- */
- public int getNameId() {
- return FO_SINGLE_PAGE_MASTER_REFERENCE;
- }
-
- }
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