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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.flow;
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.StringProperty;
/**
* Class modelling the <a href="http://www.w3.org/TR/xsl/#fo_multi-toggle">
* <code>fo:multi-toggle<code></a> property.
*/
public class MultiToggle extends FObj implements MultiCaseHandler {
// The value of properties relevant for fo:multi-toggle (commented out for performance).
// private CommonAccessibility commonAccessibility;
public StringProperty prSwitchTo;
// End of property values
private static boolean notImplementedWarningGiven = false;
/**
* Base constructor
*
* @param parent {@link FONode} that is the parent of this object
*/
public MultiToggle(FONode parent) {
super(parent);
if (!notImplementedWarningGiven) {
getFOValidationEventProducer().unimplementedFeature(this, getName(),
getName(), getLocator());
notImplementedWarningGiven = true;
}
}
/** {@inheritDoc} */
@Override
public void bind(PropertyList pList) throws FOPException {
super.bind(pList);
prSwitchTo = (StringProperty) pList.get(PR_SWITCH_TO);
}
/**
* {@inheritDoc}
* <br>XSL Content Model: (#PCDATA|%inline;|%block;)*
*/
@Override
protected void validateChildNode(Locator loc, String nsURI, String localName)
throws ValidationException {
if (FO_URI.equals(nsURI)) {
if (!isBlockOrInlineItem(nsURI, localName)) {
invalidChildError(loc, nsURI, localName);
}
}
}
/** {@inheritDoc} */
@Override
public String getLocalName() {
return "multi-toggle";
}
/**
* {@inheritDoc}
* @return {@link org.apache.fop.fo.Constants#FO_MULTI_TOGGLE}
*/
@Override
public int getNameId() {
return FO_MULTI_TOGGLE;
}
public void filter(MultiSwitch multiSwitch) throws FOPException {
if (multiSwitch.getCurrentlyVisibleNode() == null) {
multiSwitch.setCurrentlyVisibleNode(parent);
}
FONode currentlyVisibleMultiCase = multiSwitch.getCurrentlyVisibleNode();
if (prSwitchTo.getString().equals("xsl-any")) {
// NoOp
} else if (prSwitchTo.getString().equals("xsl-preceding")) {
FONodeIterator nodeIter = multiSwitch.getChildNodes(currentlyVisibleMultiCase);
if (nodeIter != null) {
if (!nodeIter.hasPrevious()) {
currentlyVisibleMultiCase = nodeIter.lastNode();
} else {
currentlyVisibleMultiCase = nodeIter.previousNode();
}
}
} else if (prSwitchTo.getString().equals("xsl-following")) {
FONodeIterator nodeIter = multiSwitch.getChildNodes(currentlyVisibleMultiCase);
if (nodeIter != null) {
//Ignore the first node
nodeIter.next();
if (!nodeIter.hasNext()) {
currentlyVisibleMultiCase = nodeIter.firstNode();
} else {
currentlyVisibleMultiCase = nodeIter.nextNode();
}
}
} else {
// Pick an fo:multi-case that matches a case-name...
}
multiSwitch.setCurrentlyVisibleNode(currentlyVisibleMultiCase);
}
}
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