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Java > Open Source Codes > org > apache > fop > area > inline > InlineBlockParent


1 /*
2  * Licensed to the Apache Software Foundation (ASF) under one or more
3  * contributor license agreements. See the NOTICE file distributed with
4  * this work for additional information regarding copyright ownership.
5  * The ASF licenses this file to You under the Apache License, Version 2.0
6  * (the "License"); you may not use this file except in compliance with
7  * the License. You may obtain a copy of the License at
8  *
9  * http://www.apache.org/licenses/LICENSE-2.0
10  *
11  * Unless required by applicable law or agreed to in writing, software
12  * distributed under the License is distributed on an "AS IS" BASIS,
13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14  * See the License for the specific language governing permissions and
15  * limitations under the License.
16  */
17
18 /* $Id: InlineBlockParent.java 426576 2006-07-28 15:44:37Z jeremias $ */
19
20 package org.apache.fop.area.inline;
21
22 import org.apache.fop.area.Area;
23 import org.apache.fop.area.Block;
24
25
26 /**
27  * Inline block parent area.
28  * This is an inline area that can have one block area as a child
29  */
30 public class InlineBlockParent extends InlineArea {
31
32     /**
33      * The list of inline areas added to this inline parent.
34      */
35     protected Block child = null;
36
37     /**
38      * Create a new inline block parent to add areas to.
39      */
40     public InlineBlockParent() {
41     }
42
43     /**
44      * Override generic Area method.
45      *
46      * @param childArea the child area to add
47      */
48     public void addChildArea(Area childArea) {
49         if (child != null) {
50             throw new IllegalStateException JavaDoc("InlineBlockParent may have only one child area.");
51         }
52         if (childArea instanceof Block) {
53             child = (Block) childArea;
54             //Update extents from the child
55 setIPD(childArea.getAllocIPD());
56             setBPD(childArea.getAllocBPD());
57         } else {
58             throw new IllegalArgumentException JavaDoc("The child of an InlineBlockParent must be a"
59                     + " Block area");
60         }
61     }
62
63     /**
64      * Get the child areas for this inline parent.
65      *
66      * @return the list of child areas
67      */
68     public Block getChildArea() {
69         return child;
70     }
71
72 }
73
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