1 /*
2 * $Id: IteratorStatus.java 471756 2006-11-06 15:01:43Z husted $
3 *
4 * Licensed to the Apache Software Foundation (ASF) under one
5 * or more contributor license agreements. See the NOTICE file
6 * distributed with this work for additional information
7 * regarding copyright ownership. The ASF licenses this file
8 * to you under the Apache License, Version 2.0 (the
9 * "License"); you may not use this file except in compliance
10 * with the License. You may obtain a copy of the License at
11 *
12 * http://www.apache.org/licenses/LICENSE-2.0
13 *
14 * Unless required by applicable law or agreed to in writing,
15 * software distributed under the License is distributed on an
16 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17 * KIND, either express or implied. See the License for the
18 * specific language governing permissions and limitations
19 * under the License.
20 */
21 package org.apache.struts2.views.jsp;
22
23
24 /***
25 * The iterator tag can export an IteratorStatus object so that
26 * one can get information about the status of the iteration, such as
27 * the size, current index, and whether any more items are available.
28 *
29 */
30 public class IteratorStatus {
31 protected StatusState state;
32
33 public IteratorStatus(StatusState aState) {
34 state = aState;
35 }
36
37 public int getCount() {
38 return state.index + 1;
39 }
40
41 public boolean isEven() {
42 return ((state.index + 1) % 2) == 0;
43 }
44
45 public boolean isFirst() {
46 return state.index == 0;
47 }
48
49 public int getIndex() {
50 return state.index;
51 }
52
53 public boolean isLast() {
54 return state.last;
55 }
56
57 public boolean isOdd() {
58 return ((state.index + 1) % 2) == 1;
59 }
60
61 public int modulus(int operand) {
62 return (state.index + 1) % operand;
63 }
64
65 public static class StatusState {
66 boolean last = false;
67 int index = 0;
68
69 public void setLast(boolean isLast) {
70 last = isLast;
71 }
72
73 public void next() {
74 index++;
75 }
76 }
77 }