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/*
* Copyright 1999-2004 The Apache Software Foundation.
*
* Licensed 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;
// XML
import org.xml.sax.Attributes;
import org.xml.sax.Locator;
import org.xml.sax.SAXParseException;
// FOP
import org.apache.fop.fo.CharIterator;
import org.apache.fop.fo.FONode;
import org.apache.fop.fo.FObjMixed;
import org.apache.fop.fo.InlineCharIterator;
/**
* Class modelling the fo:inline formatting object.
*/
public class Inline extends FObjMixed {
// used for FO validation
private boolean blockOrInlineItemFound = false;
private boolean canHaveBlockLevelChildren = true;
/**
* @param parent FONode that is the parent of this object
*/
public Inline(FONode parent) {
super(parent);
}
/**
* @see org.apache.fop.fo.FObj#addProperties
*/
protected void addProperties(Attributes attlist) throws SAXParseException {
super.addProperties(attlist);
/* Check to see if this node can have block-level children.
* See validateChildNode() below.
*/
int lvlLeader = findAncestor(FO_LEADER);
int lvlFootnote = findAncestor(FO_FOOTNOTE);
int lvlInCntr = findAncestor(FO_INLINE_CONTAINER);
if (lvlLeader > 0) {
if (lvlInCntr < 0 ||
(lvlInCntr > 0 && lvlInCntr > lvlLeader)) {
canHaveBlockLevelChildren = false;
}
} else if (lvlFootnote > 0) {
if (lvlInCntr < 0 || lvlInCntr > lvlFootnote) {
canHaveBlockLevelChildren = false;
}
}
getFOEventHandler().startInline(this);
}
/**
* @see org.apache.fop.fo.FONode#validateChildNode(Locator, String, String)
* XSL Content Model: marker* (#PCDATA|%inline;|%block;)*
* Additionally: " An fo:inline that is a descendant of an fo:leader
* or fo:footnote may not have block-level children, unless it has a
* nearer ancestor that is an fo:inline-container." (paraphrased)
*/
protected void validateChildNode(Locator loc, String nsURI, String localName)
throws SAXParseException {
if (nsURI == FO_URI && localName.equals("marker")) {
if (blockOrInlineItemFound) {
nodesOutOfOrderError(loc, "fo:marker",
"(#PCDATA|%inline;|%block;)");
}
} else if (!isBlockOrInlineItem(nsURI, localName)) {
invalidChildError(loc, nsURI, localName);
} else if (!canHaveBlockLevelChildren && isBlockItem(nsURI, localName)) {
String ruleViolated =
" An fo:inline that is a descendant of an fo:leader" +
" or fo:footnote may not have block-level children," +
" unless it has a nearer ancestor that is an" +
" fo:inline-container.";
invalidChildError(loc, nsURI, localName, ruleViolated);
} else {
blockOrInlineItemFound = true;
}
}
/**
* @see org.apache.fop.fo.FONode#endOfNode
*/
protected void endOfNode() throws SAXParseException {
getFOEventHandler().endInline(this);
}
/**
* @see org.apache.fop.fo.FObjMixed#charIterator
*/
public CharIterator charIterator() {
return new InlineCharIterator(this, propMgr.getBorderAndPadding());
}
/**
* @see org.apache.fop.fo.FObj#getName()
*/
public String getName() {
return "fo:inline";
}
/**
* @see org.apache.fop.fo.FObj#getNameId()
*/
public int getNameId() {
return FO_INLINE;
}
}
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