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comparison flys-client/src/main/java/de/intevation/flys/client/shared/model/DataList.java @ 51:a2923d63f530

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Introduced a data structure DataList to manage to list of Data objects of a single state. flys-client/trunk@1505 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Thu, 17 Mar 2011 16:44:51 +0000
parents
children 1d0be51ab93b
comparison
equal deleted inserted replaced
50:827eb4e06ebf 51:a2923d63f530
1 package de.intevation.flys.client.shared.model;
2
3 import java.io.Serializable;
4 import java.util.ArrayList;
5 import java.util.List;
6
7 /**
8 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
9 */
10 public class DataList implements Serializable {
11
12 /** The list of Data objects managed by this list.*/
13 protected List<Data> data;
14
15 /** The name of the state that this list belongs to.*/
16 protected String state;
17
18 /** The name of a UIProvider that is recommended to render this DataList.*/
19 protected String uiprovider;
20
21 /** The label that should be used to label data objects.*/
22 protected String label;
23
24
25 /**
26 * The default constructor that creates a new DataList without Data objects
27 * and no UIProvider.
28 */
29 public DataList() {
30 data = new ArrayList<Data>();
31 }
32
33
34 public DataList(String state, int size) {
35 this.state = state;
36 this.data = new ArrayList<Data>(size);
37 }
38
39
40 /**
41 * A constructor that creates a new DataList without Data objects and no
42 * UIProvider. Size defines the initial size of the list.
43 *
44 * @param size The initial size of the list.
45 */
46 public DataList(String state, int size, String uiprovider) {
47 this(state, size);
48 this.uiprovider = uiprovider;
49 }
50
51
52 /**
53 * Adds a new Data object to the list.
54 *
55 * @param obj The Data object.
56 */
57 public void add(Data obj) {
58 if (obj != null) {
59 data.add(obj);
60 }
61 }
62
63
64 /**
65 * Adds a new Data objects to the list.
66 *
67 * @param obj The Data object.
68 */
69 public void add(Data[] obj) {
70 if (obj != null) {
71 for (Data o: obj) {
72 data.add(o);
73 }
74 }
75 }
76
77
78 /**
79 * Returns the Data element at position <i>idx</i>.
80 *
81 * @param idx The position of an element that should be returned.
82 *
83 * @return the Data element at position <i>idx</i>.
84 */
85 public Data get(int idx) {
86 if (idx < size()) {
87 return data.get(idx);
88 }
89
90 return null;
91 }
92
93
94 /**
95 * Returns the number of Data objects in the list.
96 *
97 * @param the number of Data objects in the list.
98 */
99 public int size() {
100 return data.size();
101 }
102
103
104 /**
105 * Returns the name of the state that this list belongs to.
106 *
107 * @return the name of the state that this list belongs to.
108 */
109 public String getState() {
110 return state;
111 }
112
113
114 /**
115 * Returns the label for this list.
116 *
117 * @return the label of this list.
118 */
119 public String getLabel() {
120 return label;
121 }
122
123
124 /**
125 * Retrieves the name of a UIProvider or null if no one is recommended.
126 *
127 * @return the name of a UIProvider or null if no one is recommended.
128 */
129 public String getUIProvider() {
130 return uiprovider;
131 }
132 }
133 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
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