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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.inline;
import org.apache.fop.area.inline.InlineArea;
import org.apache.fop.area.Block;
import org.apache.fop.fo.flow.Wrapper;
import org.apache.fop.layoutmgr.BlockLayoutManager;
import org.apache.fop.layoutmgr.BlockStackingLayoutManager;
import org.apache.fop.layoutmgr.LayoutContext;
import org.apache.fop.layoutmgr.PositionIterator;
import org.apache.fop.layoutmgr.TraitSetter;
import java.util.LinkedList;
/**
* This is the layout manager for the fo:wrapper formatting object.
*/
public class WrapperLayoutManager extends LeafNodeLayoutManager {
/**
* Creates a new LM for fo:wrapper.
* @param node the fo:wrapper
*/
public WrapperLayoutManager(Wrapper node) {
super(node);
}
/** {@inheritDoc} */
public InlineArea get(LayoutContext context) {
// Create a zero-width, zero-height dummy area so this node can
// participate in the ID handling. Otherwise, addId() wouldn't
// be called. The area must also be added to the tree, because
// determination of the X,Y position is done in the renderer.
InlineArea area = new InlineArea();
if (fobj.hasId()) {
TraitSetter.setProducerID(area, fobj.getId());
}
return area;
}
/**
* Add the area for this layout manager.
* This adds the dummy area to the parent, *if* it has an id
* - otherwise it serves no purpose.
*
* @param posIter the position iterator
* @param context the layout context for adding the area
*/
public void addAreas(PositionIterator posIter, LayoutContext context) {
if (fobj.hasId()) {
addId();
if (parentLM instanceof BlockStackingLayoutManager
&& !(parentLM instanceof BlockLayoutManager)) {
Block helperBlock = new Block();
TraitSetter.setProducerID(helperBlock, fobj.getId());
parentLM.addChildArea(helperBlock);
} else {
InlineArea area = getEffectiveArea();
parentLM.addChildArea(area);
}
}
while (posIter.hasNext()) {
posIter.next();
}
}
/** {@inheritDoc} */
protected void addId() {
getPSLM().addIDToPage(fobj.getId());
}
}
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