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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.layoutmgr;
import java.util.ArrayList;
import java.util.List;
import org.apache.fop.layoutmgr.MultiSwitchLayoutManager.WhitespaceManagementPosition;
/**
* A special penalty used to specify content having multiple variants. At most
* only one variant will be inserted into the final document. If none of the
* variants fit into the remaining space on the current page, the dynamic
* content will be completely ignored.
*/
public class WhitespaceManagementPenalty extends KnuthPenalty {
public class Variant {
public final List<ListElement> knuthList;
public final int width;
private final KnuthPenalty penalty;
public Variant(List<ListElement> knuthList, int width) {
this.knuthList = knuthList;
this.width = width;
this.penalty = new KnuthPenalty(width, 0, false, null, false);
}
public KnuthElement getPenalty() {
return penalty;
}
public WhitespaceManagementPenalty getWhitespaceManagementPenalty() {
return WhitespaceManagementPenalty.this;
}
}
private final WhitespaceManagementPosition whitespaceManagementPosition;
private final List<Variant> variantList;
public WhitespaceManagementPenalty(WhitespaceManagementPosition pos) {
super(0, 0, false, pos, false);
this.whitespaceManagementPosition = pos;
variantList = new ArrayList<Variant>();
}
public void addVariant(Variant variant) {
variantList.add(variant);
}
public void setActiveVariant(Variant bestVariant) {
whitespaceManagementPosition.setKnuthList(bestVariant.knuthList);
}
public boolean hasActiveVariant() {
return whitespaceManagementPosition.getKnuthList() != null;
}
public List<Variant> getVariants() {
return variantList;
}
@Override
public String toString() {
String str = super.toString();
StringBuffer buffer = new StringBuffer(64);
buffer.append(" number of variants = " + variantList.size());
return str + buffer.toString();
}
}
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