Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||||||
BeanPropertySelectionModel |
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| 2.25;2.25 |
1 | // Copyright 2004, 2005 The Apache Software Foundation |
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2 | // |
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3 | // Licensed under the Apache License, Version 2.0 (the "License"); |
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4 | // you may not use this file except in compliance with the License. |
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5 | // You may obtain a copy of the License at |
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6 | // |
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7 | // http://www.apache.org/licenses/LICENSE-2.0 |
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8 | // |
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9 | // Unless required by applicable law or agreed to in writing, software |
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10 | // distributed under the License is distributed on an "AS IS" BASIS, |
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11 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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12 | // See the License for the specific language governing permissions and |
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13 | // limitations under the License. |
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14 | package org.apache.tapestry.form; |
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15 | ||
16 | import org.apache.commons.beanutils.BeanUtils; |
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17 | ||
18 | import java.io.Serializable; |
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19 | import java.util.ArrayList; |
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20 | import java.util.Arrays; |
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21 | import java.util.Collection; |
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22 | import java.util.List; |
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23 | ||
24 | /** |
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25 | * This class is a property selection model for an object list. This is used in {@link PropertySelection}, |
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26 | * MultiplePropertySelection or Palette tapestry components. For example, to use for a Hospital |
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27 | * class, and have the labels be the hospital names. |
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28 | * |
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29 | * <p> |
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30 | * <code> |
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31 | * List<Hospital> list = ...; |
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32 | * return new BeanPropertySelectionModel(hospitals, "name"); |
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33 | * </code> |
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34 | * </p> |
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35 | * <p>This will use getName() on the Hospital object, as its display.</p> |
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36 | * |
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37 | * @author Gabriel Handford |
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38 | */ |
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39 | public class BeanPropertySelectionModel implements IPropertySelectionModel, Serializable |
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40 | { |
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41 | ||
42 | /** Comment for <code>serialVersionUID</code>. */ |
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43 | private static final long serialVersionUID = 3763091973006766644L; |
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44 | protected List _list; |
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45 | protected String _labelField; |
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46 | ||
47 | /** |
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48 | * Build an empty property selection model. |
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49 | */ |
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50 | public BeanPropertySelectionModel() |
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51 | { |
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52 | 2 | this(Arrays.asList(new Object[0]), null); |
53 | 2 | } |
54 | ||
55 | /** |
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56 | * Build a bean property selection model. |
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57 | * |
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58 | * @param list |
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59 | * The list |
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60 | * @param labelField |
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61 | * The label field |
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62 | */ |
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63 | public BeanPropertySelectionModel(List list, String labelField) |
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64 | 3 | { |
65 | 3 | _list = list; |
66 | 3 | _labelField = labelField; |
67 | 3 | } |
68 | ||
69 | /** |
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70 | * Build a bean property selection model. |
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71 | * |
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72 | * @param c |
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73 | * Collection |
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74 | * @param labelField |
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75 | * The label field |
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76 | */ |
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77 | public BeanPropertySelectionModel(Collection c, String labelField) |
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78 | 0 | { |
79 | 0 | _list = new ArrayList(c); |
80 | 0 | _labelField = labelField; |
81 | 0 | } |
82 | ||
83 | /** |
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84 | * Get the number of options. |
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85 | * |
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86 | * @return option count |
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87 | */ |
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88 | public int getOptionCount() |
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89 | { |
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90 | 3 | return _list.size(); |
91 | } |
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92 | ||
93 | /** |
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94 | * Get the option at index. |
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95 | * |
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96 | * @param index |
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97 | * Index |
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98 | * @return object Object at index |
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99 | */ |
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100 | public Object getOption(int index) |
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101 | { |
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102 | 3 | if (index > (_list.size() - 1)) |
103 | { |
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104 | 1 | return null; |
105 | } |
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106 | ||
107 | 2 | return _list.get(index); |
108 | } |
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109 | ||
110 | /** |
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111 | * Get the label at index. |
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112 | * |
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113 | * @param index |
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114 | * Index |
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115 | * @return label Label at index |
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116 | */ |
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117 | public String getLabel(int index) |
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118 | { |
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119 | 1 | Object obj = _list.get(index); |
120 | ||
121 | try |
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122 | { |
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123 | 1 | return BeanUtils.getProperty(obj, _labelField); |
124 | 0 | } catch (Exception e) |
125 | { |
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126 | 0 | throw new RuntimeException("Error getting property", e); |
127 | } |
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128 | } |
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129 | ||
130 | /** |
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131 | * Get the value at index. |
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132 | * |
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133 | * @param index |
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134 | * Index |
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135 | * @return value Value at index |
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136 | */ |
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137 | public String getValue(int index) |
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138 | { |
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139 | 0 | return String.valueOf(index); |
140 | } |
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141 | ||
142 | public boolean isDisabled(int index) |
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143 | { |
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144 | 0 | return false; |
145 | } |
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146 | ||
147 | /** |
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148 | * Translate value to object. |
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149 | * |
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150 | * @param value |
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151 | * Value |
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152 | * @return object Object from value |
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153 | */ |
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154 | public Object translateValue(String value) |
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155 | { |
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156 | 1 | if (value == null) |
157 | { |
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158 | 0 | return null; |
159 | } |
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160 | ||
161 | 1 | return getOption( Integer.parseInt(value)); |
162 | } |
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163 | ||
164 | public String toString() |
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165 | { |
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166 | 0 | return "BeanPropertySelectionModel[" + |
167 | "_list=" + _list + |
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168 | '\n' + |
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169 | ", _labelField='" + _labelField + '\'' + |
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170 | '\n' + |
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171 | ']'; |
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172 | } |
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173 | ||
174 | public boolean equals(Object o) |
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175 | { |
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176 | 0 | if (this == o) return true; |
177 | 0 | if (!(o instanceof BeanPropertySelectionModel)) return false; |
178 | ||
179 | 0 | BeanPropertySelectionModel that = (BeanPropertySelectionModel) o; |
180 | ||
181 | 0 | if (_labelField != null ? !_labelField.equals(that._labelField) : that._labelField != null) return false; |
182 | 0 | if (_list != null ? !_list.equals(that._list) : that._list != null) return false; |
183 | ||
184 | 0 | return true; |
185 | } |
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186 | ||
187 | public int hashCode() |
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188 | { |
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189 | int result; |
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190 | 0 | result = (_list != null ? _list.hashCode() : 0); |
191 | 0 | result = 31 * result + (_labelField != null ? _labelField.hashCode() : 0); |
192 | 0 | return result; |
193 | } |
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194 | } |