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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 java.util.Iterator;
import java.util.Stack;
import org.apache.fop.apps.FOPException;
import org.apache.fop.complexscripts.bidi.DelimitedTextRange;
import org.apache.fop.fo.Constants;
import org.apache.fop.fo.FONode;
import org.apache.fop.fo.PropertyList;
import org.apache.fop.fo.properties.Property;
import org.apache.fop.util.CharUtilities;
/**
* 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 Inline {
// The value of FO traits (refined properties) that apply to fo:bidi-override
// (that are not implemented by InlineLevel).
private Property letterSpacing;
private Property wordSpacing;
private int direction;
private int unicodeBidi;
// private int scoreSpaces;
// End of trait values
/**
* Base constructor
*
* @param parent FONode that is the parent of this object
*/
public BidiOverride(FONode parent) {
super(parent);
}
/** {@inheritDoc} */
public void bind(PropertyList pList) throws FOPException {
super.bind(pList);
letterSpacing = pList.get(PR_LETTER_SPACING);
wordSpacing = pList.get(PR_WORD_SPACING);
direction = pList.get(PR_DIRECTION).getEnum();
unicodeBidi = pList.get(PR_UNICODE_BIDI).getEnum();
}
/** @return the "letter-spacing" trait */
public Property getLetterSpacing() {
return letterSpacing;
}
/** @return the "word-spacing" trait */
public Property getWordSpacing() {
return wordSpacing;
}
/** @return the "direction" trait */
public int getDirection() {
return direction;
}
/** @return the "unicodeBidi" trait */
public int getUnicodeBidi() {
return unicodeBidi;
}
/** {@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;
}
@Override
protected Stack collectDelimitedTextRanges(Stack ranges, DelimitedTextRange currentRange) {
char pfx = 0;
char sfx = 0;
int unicodeBidi = getUnicodeBidi();
int direction = getDirection();
if (unicodeBidi == Constants.EN_BIDI_OVERRIDE) {
pfx = (direction == Constants.EN_RTL) ? CharUtilities.RLO : CharUtilities.LRO;
sfx = CharUtilities.PDF;
} else if (unicodeBidi == Constants.EN_EMBED) {
pfx = (direction == Constants.EN_RTL) ? CharUtilities.RLE : CharUtilities.LRE;
sfx = CharUtilities.PDF;
}
if (currentRange != null) {
if (pfx != 0) {
currentRange.append(pfx, this);
}
for (Iterator it = getChildNodes(); (it != null) && it.hasNext();) {
ranges = ((FONode) it.next()).collectDelimitedTextRanges(ranges);
}
if (sfx != 0) {
currentRange.append(sfx, this);
}
}
return ranges;
}
}
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