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Java > Open Source Codes > com > jsptags > navigation > pager > IndexTagExtraInfo


1 /*
2  * Pager Tag Library
3  *
4  * Copyright (C) 2002 James Klicman <james@jsptags.com>
5  *
6  * This library is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * This library is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with this library; if not, write to the Free Software
18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19  */

20
21 package com.jsptags.navigation.pager;
22
23 import javax.servlet.jsp.*;
24 import javax.servlet.jsp.tagext.*;
25 import com.jsptags.navigation.pager.parser.*;
26
27 public final class IndexTagExtraInfo extends TagExtraInfo {
28
29     public VariableInfo[] getVariableInfo(TagData tagData) {
30         String JavaDoc export = tagData.getAttributeString("export");
31         if (export != null) {
32             try {
33                 IndexTagExport indexTagExport =
34                     TagExportParser.parseIndexTagExport(export);
35                 int len = 0;
36                 if (indexTagExport.getItemCount() != null)
37                     len++;
38                 if (indexTagExport.getPageCount() != null)
39                     len++;
40
41                 VariableInfo[] varinfo = new VariableInfo[len];
42                 int i = 0;
43
44                 String JavaDoc name;
45                 if ((name = indexTagExport.getItemCount()) != null)
46                     varinfo[i++] = new VariableInfo(name,
47                             java.lang.Integer JavaDoc.class.getName(),
48                             true, VariableInfo.NESTED);
49                 if ((name = indexTagExport.getPageCount()) != null)
50                     varinfo[i++] = new VariableInfo(name,
51                             java.lang.Integer JavaDoc.class.getName(),
52                             true, VariableInfo.NESTED);
53
54                 return varinfo;
55             } catch (ParseException ex) {
56                 return new VariableInfo[0];
57             }
58         } else {
59             return new VariableInfo[0];
60         }
61     }
62
63     public boolean isValid(TagData tagData) {
64         String JavaDoc export = tagData.getAttributeString("export");
65         if (export != null) {
66             try {
67                 TagExportParser.parseIndexTagExport(export);
68             } catch (ParseException ex) {
69                 return false;
70             }
71         }
72         return true;
73     }
74 }
75
76 /* vim:set ts=4 sw=4: */
77
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