001 package org.apache.turbine.util.template;
002
003
004 /*
005 * Licensed to the Apache Software Foundation (ASF) under one
006 * or more contributor license agreements. See the NOTICE file
007 * distributed with this work for additional information
008 * regarding copyright ownership. The ASF licenses this file
009 * to you under the Apache License, Version 2.0 (the
010 * "License"); you may not use this file except in compliance
011 * with the License. You may obtain a copy of the License at
012 *
013 * http://www.apache.org/licenses/LICENSE-2.0
014 *
015 * Unless required by applicable law or agreed to in writing,
016 * software distributed under the License is distributed on an
017 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
018 * KIND, either express or implied. See the License for the
019 * specific language governing permissions and limitations
020 * under the License.
021 */
022
023
024 import org.apache.ecs.html.Option;
025 import org.apache.ecs.html.Select;
026
027 /**
028 * This class is for generating a SelectorBox. It is good when used
029 * with WM because you can stuff it into the context and then just
030 * call it to generate the HTML. It can be used in other cases as
031 * well, but WM is the best case for it right now.
032 *
033 * <p>For example code showing the usage for this module, please see
034 * the toString() method below to see how it would be refered to from
035 * WM.
036 *
037 * <pre>
038 * // get the roles for a user
039 * RoleSet userRoles = new DefaultAccessControl().getRoles(loginid, null);
040 * if ( userRoles != null )
041 * {
042 * context.put("hasRoleSet", Boolean.TRUE);
043 *
044 * // get an array of the users roles
045 * Role[] usersRoles = userRoles.getRolesArray();
046 * // get an array of all the roles in the system
047 * Role[] allRoles = ((RoleSet)RolePeer.retrieveSet()).getRolesArray();
048 *
049 * Object[] names = new Object[allRoles.length];
050 * Object[] values = new Object[allRoles.length];
051 * for ( int i=0;i<allRoles.length; i++ )
052 * {
053 * names[i] = new Integer(allRoles[i].getPrimaryKey()).toString();
054 * values[i] = allRoles[i].getName();
055 * }
056 *
057 * SelectorBox sb = new SelectorBox("roleSetBox", names, values);
058 * sb.buildBooleans(usersRoles, allRoles);
059 * context.put("roleSetBox", sb);
060 * }
061 * else
062 * {
063 * context.put("hasRoleSet", Boolean.FALSE);
064 * }
065 * </pre>
066 *
067 * @author <a href="mailto:jon@latchkey.com">Jon S. Stevens</a>
068 * @version $Id: SelectorBox.java 615328 2008-01-25 20:25:05Z tv $
069 */
070 public class SelectorBox
071 {
072 /** This is the Select ECS element. */
073 private Select sel = null;
074
075 /** This is the size of the Select statement. */
076 private int size = 1;
077
078 /** This is the name= value. */
079 private String name = null;
080
081 /** This is the value= portion of the option element. */
082 private Object[] names = null;
083
084 /** This is the data after the option element. */
085 private Object[] values = null;
086
087 /** This is an array of which items are selected. */
088 private boolean[] selected = null;
089
090 /**
091 * Generic constructor, builds a select box with a default size of
092 * 1 and no selected items.
093 *
094 * @param name A String with the name for the select box.
095 * @param names An Object[] with the names.
096 * @param values An Object[] with the values.
097 */
098 public SelectorBox(String name, Object[] names, Object[] values)
099 {
100 this(name, names, values, 1, null);
101 }
102
103 /**
104 * Generic constructor builds a select box.
105 *
106 * @param name A String with the name for the select box.
107 * @param names An Object[] with the names.
108 * @param values An Object[] with the values.
109 * @param size An int specifying the size.
110 */
111 public SelectorBox(String name, Object[] names, Object[] values, int size)
112 {
113 this(name, names, values, size, null);
114 }
115
116 /**
117 * Generic constructor builds a select box.
118 *
119 * @param name A String with the name for the select box.
120 * @param names An Object[] with the names.
121 * @param values An Object[] with the values.
122 * @param selected A boolean[] with the selected items.
123 */
124 public SelectorBox(String name, Object[] names, Object[] values,
125 boolean[] selected)
126 {
127 this(name, names, values, 1, selected);
128 }
129
130 /**
131 * Primary constructor for everything.
132 *
133 * @param name A String with the name for the select box.
134 * @param names An Object[] with the names.
135 * @param values An Object[] with the values.
136 * @param size An int specifying the size.
137 * @param selected A boolean[] with the selected items.
138 */
139 public SelectorBox(String name, Object[] names, Object[] values, int size,
140 boolean[] selected)
141 {
142 this.name = name;
143 this.names = names;
144 this.values = values;
145 this.size = size;
146 this.selected = selected;
147
148 sel = new Select(name, size);
149 sel.setName(name);
150 sel.setSize(size);
151 }
152
153 /**
154 * Pass in an array of selected items and the entire set of items
155 * and it will determine which items in the selected set are also
156 * in the entireset and then build a boolean[] up that is the same
157 * size as the entireSet with markings to tell whether or not the
158 * items are marked or not. It uses toString().equalsIgnoreCase()
159 * on the Object in the Object[] to determine if the items are
160 * equal.
161 *
162 * @param selectedSet An Object[].
163 * @param entireSet An Object[].
164 */
165 public void buildBooleans(Object[] selectedSet, Object[] entireSet)
166 {
167 selected = new boolean[entireSet.length];
168 for (int j = 0; j < entireSet.length; j++)
169 {
170 Object r2 = entireSet[j];
171 for (int i = 0; i < selectedSet.length; i++)
172 {
173 Object r1 = selectedSet[i];
174 if (r1 != null && r2 != null &&
175 r1.toString().equalsIgnoreCase(r2.toString()))
176 {
177 selected[j] = true;
178 }
179 }
180 }
181 }
182
183 /**
184 * This builds out the select box at a certain size. To use this
185 * element in WM, you simply build this object in your java code,
186 * put it into the context and then call $selectBox.toString(5).
187 *
188 * @param size An int with the size.
189 * @return A String with the HTML code.
190 */
191 public String toString(int size)
192 {
193 sel.setSize(size);
194 sel.setName(name);
195 for (int f = 0; f < values.length; f++)
196 {
197 Option opt = new Option((String) values[f]);
198 opt.addElement((String) names[f]);
199 if (selected != null && selected[f] == true)
200 {
201 opt.setSelected(true);
202 }
203 sel.addElement(opt);
204 }
205 String output = sel.toString();
206 reset();
207 return output;
208 }
209
210 /**
211 * Resets the internal state of the SelectorBox.
212 */
213 public void reset()
214 {
215 sel = new Select(name, size);
216 }
217
218 /**
219 * This builds out the select box at a certain size. To use this
220 * element in WM, you simply build this object in your java code,
221 * put it into the context and then call $selectBox and it will
222 * build it with the default size of 1.
223 *
224 * @return A String with the HTML code.
225 */
226 public String toString()
227 {
228 return this.toString(size);
229 }
230
231 /**
232 * This allows you to set the multiple attribute to the select
233 * element. Example usage from within WM is like this:
234 *
235 * <p>
236 * $selectBox.setMultiple(true).toString(4)
237 *
238 * @param val True if multiple selection should be allowed.
239 * @return A SelectorBox (self).
240 */
241 public SelectorBox setMultiple(boolean val)
242 {
243 sel.setMultiple(val);
244 return this;
245 }
246
247 /**
248 * This allows one to set the name= attribute to the select
249 * element.
250 *
251 * @param name A String with the name.
252 * @return A SelectorBox (self).
253 */
254 public SelectorBox setName(String name)
255 {
256 this.name = name;
257 sel.setName(name);
258 return this;
259 }
260
261 /**
262 * This allows one to set the size of the select element.
263 *
264 * @param size An int with the size.
265 * @return A SelectorBox (self).
266 */
267 public SelectorBox setSize(int size)
268 {
269 this.size = size;
270 sel.setSize(size);
271 return this;
272 }
273
274 /**
275 * This allows one to set an onChange attribute on the select tag
276 *
277 * @param script A string with the script to put in onChange
278 * @return A SelectorBox (self).
279 */
280 public SelectorBox setOnChange(String script)
281 {
282 sel.setOnChange(script);
283 return this;
284 }
285
286 /**
287 * This allows one to set the array of selected booleans.
288 *
289 * @param an array of booleans
290 * @return A SelectorBox (self).
291 */
292 public SelectorBox setSelected(boolean[] bools)
293 {
294 this.selected = bools;
295 return this;
296 }
297
298 /**
299 * This will set all elements as unselected, except for the
300 * element(s) with the given name.
301 *
302 * @param name The name to appear as selected.
303 * @return A SelectorBox (self).
304 */
305 public SelectorBox setSelected(Object name)
306 {
307 if (name != null)
308 {
309 selected = new boolean[names.length];
310 for (int i = 0; i < names.length; i++)
311 {
312 Object o = names[i];
313 if (o != null && o.toString().equalsIgnoreCase(name.toString()))
314 {
315 selected[i] = true;
316 }
317 }
318 }
319 return this;
320 }
321 }