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Java > Open Source Codes > org > apache > fop > render > rtf > rtflib > rtfdoc > RtfParagraphKeepTogether


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: RtfParagraphKeepTogether.java 426576 2006-07-28 15:44:37Z jeremias $ */
19
20 package org.apache.fop.render.rtf.rtflib.rtfdoc;
21
22 /*
23  * This file is part of the RTF library of the FOP project, which was originally
24  * created by Bertrand Delacretaz <bdelacretaz@codeconsult.ch> and by other
25  * contributors to the jfor project (www.jfor.org), who agreed to donate jfor to
26  * the FOP project.
27  */
28
29 import java.io.Writer JavaDoc;
30 import java.io.IOException JavaDoc;
31
32 /**
33  * Models the keep together attributes of paragraphs
34  */
35 public class RtfParagraphKeepTogether extends RtfContainer {
36
37     /** constant for unset status */
38     public static final int STATUS_NULL = 0;
39     /** constant for open paragraph */
40     public static final int STATUS_OPEN_PARAGRAPH = 1;
41     /** constant for close paragraph */
42     public static final int STATUS_CLOSE_PARAGRAPH = 2;
43
44     private int status = STATUS_NULL;
45
46
47     /** RtfParagraphKeepTogether*/
48     RtfParagraphKeepTogether(IRtfParagraphContainer parent, Writer JavaDoc w) throws IOException JavaDoc {
49         super((RtfContainer)parent, w);
50     }
51
52     /**
53      * Write the content
54      * @throws IOException for I/O problems
55      */
56     protected void writeRtfContent() throws IOException JavaDoc {
57
58         //First reet paragraph properties
59 // create a new one with keepn
60 if (status == STATUS_OPEN_PARAGRAPH) {
61             writeControlWord("pard");
62             writeControlWord("par");
63             writeControlWord("keepn");
64             writeGroupMark(true);
65             status = STATUS_NULL;
66         }
67
68
69         if (status == STATUS_CLOSE_PARAGRAPH) {
70             writeGroupMark(false);
71             status = STATUS_NULL;
72         }
73
74     }
75
76
77     /**
78      * set the status
79      * @param status the status to be set
80      */
81     public void setStatus(int status) {
82         this.status = status;
83     }
84
85     /**
86      * @return true if this element would generate no "useful" RTF content
87      */
88     public boolean isEmpty() {
89         return false;
90     }
91
92 }
93
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