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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.apache.fop.apps.FOPException;
import org.apache.fop.fo.FONode;
import org.apache.fop.fo.FObjMixed;
import org.apache.fop.fo.PropertyList;
import org.apache.fop.fo.ValidationException;
import org.xml.sax.Locator;
/**
* Class modelling the fo:wrapper object.
* The wrapper object serves as a property holder for
* its child node objects.
*/
public class Wrapper extends FObjMixed {
// The value of properties relevant for fo:wrapper.
// End of property values
// used for FO validation
private boolean blockOrInlineItemFound = false;
private boolean inlineChildrenAllowed = false;
/**
* @param parent FONode that is the parent of this object
*/
public Wrapper(FONode parent) {
super(parent);
/* Check if the fo:wrapper is a child of a FO that allows mixed content
* (or a descendant in nested fo:wrapper sequence, the first of which
* is a child of a FO that allows mixed content) */
FONode ancestor = this.parent;
while (ancestor instanceof Wrapper) {
ancestor = ancestor.getParent();
}
if (ancestor instanceof FObjMixed ) {
inlineChildrenAllowed = true;
}
}
/**
* {@inheritDoc}
* <br>XSL Content Model: marker* (#PCDATA|%inline;|%block;)*
* <br><i>Additionally (unimplemented): "An fo:wrapper that is a child of an
* fo:multi-properties is only permitted to have children that would
* be permitted in place of the fo:multi-properties."</i>
*
*/
protected void validateChildNode(Locator loc, String nsURI, String localName)
throws ValidationException {
if (FO_URI.equals(nsURI) && "marker".equals(localName)) {
if (blockOrInlineItemFound) {
nodesOutOfOrderError(loc, "fo:marker",
"(#PCDATA|%inline;|%block;)");
}
} else if (isBlockOrInlineItem(nsURI, localName)) {
//delegate validation to parent
FONode.validateChildNode(this.parent, loc, nsURI, localName);
blockOrInlineItemFound = true;
} else {
invalidChildError(loc, nsURI, localName);
}
}
/** {@inheritDoc} */
protected void addCharacters(
char[] data,
int start,
int end,
PropertyList pList,
Locator locator) throws FOPException {
/* Only add text if the fo:wrapper's parent allows inline children */
if (this.inlineChildrenAllowed) {
super.addCharacters(data, start, end, pList, locator);
}
}
/** {@inheritDoc} */
public String getLocalName() {
return "wrapper";
}
/** {@inheritDoc} */
public int getNameId() {
return FO_WRAPPER;
}
}
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