1 /**
2 * Licensed under the Artistic License; you may not use this file
3 * except in compliance with the License.
4 * You may obtain a copy of the License at
5 *
6 * http://displaytag.sourceforge.net/license.html
7 *
8 * THIS PACKAGE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR
9 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
10 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
11 */
12 package org.displaytag.pagination;
13
14 import java.util.ArrayList;
15 import java.util.List;
16
17 import org.displaytag.properties.SortOrderEnum;
18 import org.displaytag.test.NumberedItem;
19
20
21 /**
22 * @author Fabrizio Giustina
23 * @version $Revision$ ($Author$)
24 */
25 public class SimplePaginatedList implements PaginatedList
26 {
27
28 /**
29 * wrapped list
30 */
31 private List fullList = new ArrayList();
32
33 /**
34 * Number of objects per page.
35 */
36 private int objectsPerPage;
37
38 /**
39 * Current page (starting from 1)
40 */
41 private int currentPage;
42
43 /**
44 * Instantiates a new paginated list.
45 */
46 public SimplePaginatedList(int objectsPerPage, int currentPage)
47 {
48 for (int j = 1; j < 11; j++)
49 {
50 fullList.add(new NumberedItem(j));
51 }
52 this.objectsPerPage = objectsPerPage;
53 this.currentPage = currentPage;
54 }
55
56 /**
57 * @see org.displaytag.pagination.PaginatedList#getList()
58 */
59 public List getList()
60 {
61 int startOffset = objectsPerPage * (currentPage - 1);
62 List sublist = fullList.subList(startOffset, Math.min(fullList.size(), startOffset + objectsPerPage));
63 return sublist;
64 }
65
66 /**
67 * @see org.displaytag.pagination.PaginatedList#getPageNumber()
68 */
69 public int getPageNumber()
70 {
71 return currentPage;
72 }
73
74 /**
75 * @see org.displaytag.pagination.PaginatedList#getObjectsPerPage()
76 */
77 public int getObjectsPerPage()
78 {
79 return objectsPerPage;
80 }
81
82 /**
83 * @see org.displaytag.pagination.PaginatedList#getFullListSize()
84 */
85 public int getFullListSize()
86 {
87 return fullList.size();
88 }
89
90 /**
91 * @see org.displaytag.pagination.PaginatedList#getSortCriterion()
92 */
93 public String getSortCriterion()
94 {
95 return "number";
96 }
97
98 /**
99 * @see org.displaytag.pagination.PaginatedList#getSortDirection()
100 */
101 public SortOrderEnum getSortDirection()
102 {
103 return SortOrderEnum.DESCENDING;
104 }
105
106 /**
107 * @see org.displaytag.pagination.PaginatedList#getSearchId()
108 */
109 public String getSearchId()
110 {
111 return Integer.toHexString(objectsPerPage * 10000 + currentPage);
112 }
113
114 }
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