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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;
// Java
import java.util.ArrayList;
import java.util.List;
import org.xml.sax.Locator;
import org.apache.fop.apps.FOPException;
import org.apache.fop.datatypes.Length;
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.ColorTypeProperty;
import org.apache.fop.fo.properties.CommonAural;
import org.apache.fop.fo.properties.CommonFont;
import org.apache.fop.fo.properties.CommonRelativePosition;
import org.apache.fop.fo.properties.SpaceProperty;
import org.apache.fop.layoutmgr.BidiLayoutManager;
import org.apache.fop.layoutmgr.InlineLayoutManager;
import org.apache.fop.layoutmgr.LayoutManager;
/**
* fo:bidi-override element.
*/
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 CommonAural commonAural;
private CommonFont commonFont;
private CommonRelativePosition commonRelativePosition;
private ColorTypeProperty prColor;
// private ToBeImplementedProperty prDirection;
// private ToBeImplementedProperty prLetterSpacing;
private Length prLineHeight;
// private ToBeImplementedProperty prScoreSpaces;
// private ToBeImplementedProperty prUnicodeBidi;
private SpaceProperty prWordSpacing;
// End of property values
/**
* @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;
}
}
}
/**
* @see org.apache.fop.fo.FObj#bind(PropertyList)
*/
public void bind(PropertyList pList) throws FOPException {
commonAural = pList.getAuralProps();
commonFont = pList.getFontProps();
commonRelativePosition = pList.getRelativePositionProps();
prColor = pList.get(PR_COLOR).getColorType();
// prDirection = pList.get(PR_DIRECTION);
// prLetterSpacing = pList.get(PR_LETTER_SPACING);
prLineHeight = pList.get(PR_LINE_HEIGHT).getLength();
// prScoreSpaces = pList.get(PR_SCORE_SPACES);
// prUnicodeBidi = pList.get(PR_UNICODE_BIDI);
prWordSpacing = pList.get(PR_WORD_SPACING).getSpace();
}
/**
* @see org.apache.fop.fo.FONode#validateChildNode(Locator, String, String)
* XSL Content Model: marker* (#PCDATA|%inline;|%block;)*
* 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."
*/
protected void validateChildNode(Locator loc, String nsURI, String localName)
throws ValidationException {
if (FO_URI.equals(nsURI) && 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: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.";
invalidChildError(loc, nsURI, localName, ruleViolated);
} else {
blockOrInlineItemFound = true;
}
}
/**
* @see org.apache.fop.fo.FObj#getName()
*/
public String getName() {
return "fo:bidi-override";
}
/**
* @see org.apache.fop.fo.FObj#getNameId()
*/
public int getNameId() {
return FO_BIDI_OVERRIDE;
}
}
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