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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.FObjMixed;
import org.apache.fop.fo.PropertyList;
import org.apache.fop.fo.ValidationException;
import org.apache.fop.fo.properties.SpaceProperty;
/**
* Class modelling the <a href="http://www.w3.org/TR/xsl/#fo_bidi-override">
* <code>fo:bidi-override</code></a> object.
*/
public class BidiOverride extends FObjMixed {
// used for FO validation
private boolean blockOrInlineItemFound = false;
private boolean canHaveBlockLevelChildren = true;
// The value of properties relevant for fo:bidi-override.
// private ToBeImplementedProperty prDirection;
// private ToBeImplementedProperty prLetterSpacing;
private SpaceProperty lineHeight;
// private ToBeImplementedProperty prScoreSpaces;
// private ToBeImplementedProperty prUnicodeBidi;
// Unused but valid items, commented out for performance:
// private CommonAural commonAural;
// private CommonFont commonFont;
// private CommonRelativePosition commonRelativePosition;
// private Color prColor;
// private SpaceProperty prWordSpacing;
// End of property values
/**
* Base constructor
*
* @param parent FONode that is the parent of this object
*/
public BidiOverride(FONode parent) {
super(parent);
/* Check to see if this node can have block-level children.
* See validateChildNode() below.
*/
int lvlLeader = findAncestor(FO_LEADER);
int lvlInCntr = findAncestor(FO_INLINE_CONTAINER);
int lvlInline = findAncestor(FO_INLINE);
int lvlFootnote = findAncestor(FO_FOOTNOTE);
if (lvlLeader > 0) {
if (lvlInCntr < 0 || (lvlInCntr > 0 && lvlInCntr > lvlLeader)) {
canHaveBlockLevelChildren = false;
}
} else if (lvlInline > 0 && lvlFootnote == (lvlInline + 1)) {
if (lvlInCntr < 0 || (lvlInCntr > 0 && lvlInCntr > lvlInline)) {
canHaveBlockLevelChildren = false;
}
}
}
/** {@inheritDoc} */
public void bind(PropertyList pList) throws FOPException {
// prDirection = pList.get(PR_DIRECTION);
// prLetterSpacing = pList.get(PR_LETTER_SPACING);
lineHeight = pList.get(PR_LINE_HEIGHT).getSpace();
// prScoreSpaces = pList.get(PR_SCORE_SPACES);
// prUnicodeBidi = pList.get(PR_UNICODE_BIDI);
}
/**
* {@inheritDoc}
* <br>XSL Content Model: marker* (#PCDATA|%inline;|%block;)*
* <br><i>Additionally: "An fo:bidi-override that is a descendant of an fo:leader
* or of the fo:inline child of an fo:footnote may not have block-level
* children, unless it has a nearer ancestor that is an
* fo:inline-container."</i>
*/
protected void validateChildNode(Locator loc, String nsURI, String localName)
throws ValidationException {
if (FO_URI.equals(nsURI)) {
if (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)) {
invalidChildError(loc, getParent().getName(), nsURI, getName(),
"rule.bidiOverrideContent");
} else {
blockOrInlineItemFound = true;
}
}
}
/** @return the "line-height" property */
public SpaceProperty getLineHeight() {
return lineHeight;
}
/** {@inheritDoc} */
public String getLocalName() {
return "bidi-override";
}
/**
* {@inheritDoc}
* @return {@link org.apache.fop.fo.Constants#FO_BIDI_OVERRIDE}
*/
public int getNameId() {
return FO_BIDI_OVERRIDE;
}
}
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