/*
 * Copyright 1999-2005 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.area;

/**
 * The normal-flow-reference-area class.
 * Each span-reference-area contains one or more of these objects
 * See fo:region-body definition in the XSL Rec for more information.
 */
public class NormalFlow extends BlockParent {
    /**
     * Constructor.
     * @param ipd of Normal flow object
     */
    public NormalFlow(int ipd) {
        addTrait(Trait.IS_REFERENCE_AREA, Boolean.TRUE);
        setIPD(ipd);
    }
    
    /** @see org.apache.fop.area.BlockParent#addBlock(org.apache.fop.area.Block) */
    public void addBlock(Block block) {
        super.addBlock(block);
        bpd += block.getAllocBPD();
    }
}