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Java > Open Source Codes > org > apache > poi > hssf > record > DateWindow1904Record


1
2 /* ====================================================================
3    Copyright 2002-2004 Apache Software Foundation
4
5    Licensed under the Apache License, Version 2.0 (the "License");
6    you may not use this file except in compliance with the License.
7    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
19 package org.apache.poi.hssf.record;
20
21 import org.apache.poi.util.LittleEndian;
22
23 /**
24  * Title: Date Window 1904 Flag record <P>
25  * Description: Flag specifying whether 1904 date windowing is used.
26  * (tick toc tick toc...BOOM!) <P>
27  * REFERENCE: PG 280 Microsoft Excel 97 Developer's Kit (ISBN: 1-57231-498-2)<P>
28  * @author Andrew C. Oliver (acoliver at apache dot org)
29  * @version 2.0-pre
30  */
31
32 public class DateWindow1904Record
33     extends Record
34 {
35     public final static short sid = 0x22;
36     private short field_1_window;
37
38     public DateWindow1904Record()
39     {
40     }
41
42     /**
43      * Constructs a DateWindow1904 record and sets its fields appropriately.
44      *
45      * @param id id must be 0x22 or an exception will be throw upon validation
46      * @param size the size of the data area of the record
47      * @param data data of the record (should not contain sid/len)
48      */
49
50     public DateWindow1904Record(short id, short size, byte [] data)
51     {
52         super(id, size, data);
53     }
54
55     /**
56      * Constructs a DateWindow1904 record and sets its fields appropriately.
57      *
58      * @param id id must be 0x22 or an exception will be throw upon validation
59      * @param size the size of the data area of the record
60      * @param data data of the record (should not contain sid/len)
61      * @param offset of the record's data
62      */
63
64     public DateWindow1904Record(short id, short size, byte [] data,
65                                 int offset)
66     {
67         super(id, size, data, offset);
68     }
69
70     protected void validateSid(short id)
71     {
72         if (id != sid)
73         {
74             throw new RecordFormatException("NOT A 1904 RECORD");
75         }
76     }
77
78     protected void fillFields(byte [] data, short size, int offset)
79     {
80         field_1_window = LittleEndian.getShort(data, 0 + offset);
81     }
82
83     /**
84      * sets whether or not to use 1904 date windowing (which means you'll be screwed in 2004)
85      * @param window flag - 0/1 (false,true)
86      */
87
88     public void setWindowing(short window)
89     { // I hate using numbers in method names so I wont!
90 field_1_window = window;
91     }
92
93     /**
94      * gets whether or not to use 1904 date windowing (which means you'll be screwed in 2004)
95      * @return window flag - 0/1 (false,true)
96      */
97
98     public short getWindowing()
99     {
100         return field_1_window;
101     }
102
103     public String JavaDoc toString()
104     {
105         StringBuffer JavaDoc buffer = new StringBuffer JavaDoc();
106
107         buffer.append("[1904]\n");
108         buffer.append(" .is1904 = ")
109             .append(Integer.toHexString(getWindowing())).append("\n");
110         buffer.append("[/1904]\n");
111         return buffer.toString();
112     }
113
114     public int serialize(int offset, byte [] data)
115     {
116         LittleEndian.putShort(data, 0 + offset, sid);
117         LittleEndian.putShort(data, 2 + offset,
118                               (( short ) 0x02)); // 2 bytes (6 total)
119 LittleEndian.putShort(data, 4 + offset, getWindowing());
120         return getRecordSize();
121     }
122
123     public int getRecordSize()
124     {
125         return 6;
126     }
127
128     public short getSid()
129     {
130         return this.sid;
131     }
132 }
133
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