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


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: RtfPageNumber.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  * @author Christopher Scott, scottc@westinghouse.com
34  */
35 public class RtfPageNumber extends RtfContainer {
36     /* RtfText attributes: fields
37        must be carefull of group markings and star control
38        ie page field:
39            "{\field {\*\fldinst {PAGE}} {\fldrslt}}"
40     */
41
42     /** constant for field */
43     public static final String JavaDoc RTF_FIELD = "field";
44     /** constant for field on page */
45     public static final String JavaDoc RTF_FIELD_PAGE = "fldinst { PAGE }";
46     /** constant for field result */
47     public static final String JavaDoc RTF_FIELD_RESULT = "fldrslt";
48
49     /** Create an RTF paragraph as a child of given container with default attributes */
50     RtfPageNumber(IRtfPageNumberContainer parent, Writer JavaDoc w) throws IOException JavaDoc {
51         super((RtfContainer)parent, w);
52     }
53
54     /** Create an RTF page number as a child of given container with given attributes */
55      RtfPageNumber(RtfContainer parent, Writer JavaDoc w, RtfAttributes attrs) throws IOException JavaDoc {
56          // Adds the attributes of the parent paragraph
57 super(parent, w, attrs);
58      }
59
60     /** Create an RTF page number as a child of given paragraph,
61      * copying the paragraph attributes
62      */
63      RtfPageNumber(RtfParagraph parent, Writer JavaDoc w) throws IOException JavaDoc {
64          // Adds the attributes of the parent paragraph
65 super((RtfContainer)parent, w, parent.attrib);
66
67          // copy parent's text attributes
68 if (parent.getTextAttributes() != null) {
69              attrib.set(parent.getTextAttributes());
70          }
71      }
72
73     /**
74      * Write our attributes and content
75      * @throws IOException for I/O problems
76      */
77     protected void writeRtfContent() throws IOException JavaDoc {
78         /*
79         writeGroupMark(true);
80         writeControlWord(RTF_FIELD);
81         writeGroupMark(true);
82         writeAttributes(attrib, RtfText.ATTR_NAMES); // Added by Boris Poudérous
83         writeStarControlWord(RTF_FIELD_PAGE);
84         writeGroupMark(false);
85         writeGroupMark(true);
86         writeControlWord(RTF_FIELD_RESULT);
87         writeGroupMark(false);
88         writeGroupMark(false);
89         */
90         writeGroupMark(true);
91         writeAttributes(attrib, RtfText.ATTR_NAMES);
92         writeControlWord("chpgn");
93         writeGroupMark(false);
94     }
95
96     /**
97      * @return true if this element would generate no "useful" RTF content
98      */
99     public boolean isEmpty() {
100         return false;
101     }
102 }
103
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