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16 package org.apache.cocoon.forms.formmodel;
17
18 import java.util.ArrayList  ;
19 import java.util.HashMap ;
20 import java.util.Iterator ;
21 import java.util.List ;
22 import java.util.Map ;
23
24 import org.apache.cocoon.forms.FormsConstants;
25 import org.apache.cocoon.forms.FormContext;
26 import org.apache.cocoon.forms.formmodel.AggregateFieldDefinition.SplitMapping;
27 import org.apache.cocoon.forms.util.I18nMessage;
28 import org.apache.cocoon.forms.validation.ValidationError;
29 import org.apache.excalibur.xml.sax.XMLizable;
30 import org.apache.oro.text.regex.MatchResult;
31 import org.apache.oro.text.regex.PatternMatcher;
32 import org.apache.oro.text.regex.Perl5Matcher;
33 import org.outerj.expression.ExpressionException;
34
35
54 public class AggregateField extends Field implements ContainerWidget {
55
56 private static final String AGGREGATEFIELD_EL = "aggregatefield";
57
58
61 private List fields = new ArrayList ();
62
63
66 private Map fieldsById = new HashMap ();
67
68
69 public AggregateField(AggregateFieldDefinition definition) {
70 super(definition);
71 }
72
73 public final AggregateFieldDefinition getAggregateFieldDefinition() {
74 return (AggregateFieldDefinition)getDefinition();
75 }
76
77 public void initialize() {
78 this.selectionList = getAggregateFieldDefinition().getSelectionList();
79 }
80
81 public void addChild(Widget widget) {
82 if (!(widget instanceof Field)) {
83 throw new IllegalArgumentException ("AggregateField can only contain fields.");
84 }
85 addField((Field)widget);
86 }
87
88 protected void addField(Field field) {
89 field.setParent(this);
90 fields.add(field);
91 fieldsById.put(field.getId(), field);
92 }
93
94
95 public boolean hasChild(String id) {
96 return this.fieldsById.containsKey(id);
97 }
98
99 public Iterator getChildren() {
100 return fields.iterator();
101 }
102
103 public void readFromRequest(FormContext formContext) {
104 if (!getCombinedState().isAcceptingInputs()) {
105 return;
106 }
107
108 String newEnteredValue = formContext.getRequest().getParameter(getRequestParameterName());
109 if (newEnteredValue != null) {
110 super.readFromRequest(formContext);
112 if (this.valueState == VALUE_UNPARSED) {
113 setFieldsValues(enteredValue);
114 }
115 } else {
116 for (Iterator i = fields.iterator(); i.hasNext();) {
118 Field field = (Field)i.next();
119 field.readFromRequest(formContext);
120 if (field.valueState == VALUE_UNPARSED) {
121 this.valueState = VALUE_UNPARSED;
122 }
123 }
124 if (this.valueState == VALUE_UNPARSED) {
125 combineFields();
126 }
127 }
128 }
129
130 public void setValue(Object newValue) {
131 super.setValue(newValue);
132 if (this.valueState == VALUE_PARSED) {
133 setFieldsValues(enteredValue);
134 }
135 }
136
137
140 private boolean fieldsHaveValues() {
141 for (Iterator i = fields.iterator(); i.hasNext();) {
142 Field field = (Field)i.next();
143 if (field.getValue() != null) {
144 return true;
145 }
146 }
147 return false;
148 }
149
150
154 private void setFieldsValues(String value) {
155 if (value == null) {
156 resetFieldsValues();
157 } else {
158 PatternMatcher matcher = new Perl5Matcher();
159 if (matcher.matches(value, getAggregateFieldDefinition().getSplitPattern())) {
160 MatchResult matchResult = matcher.getMatch();
161 Iterator iterator = getAggregateFieldDefinition().getSplitMappingsIterator();
162 while (iterator.hasNext()) {
163 SplitMapping splitMapping = (SplitMapping)iterator.next();
164 String result = matchResult.group(splitMapping.getGroup());
165
166 Field field = (Field)fieldsById.get(splitMapping.getFieldId());
168 field.readFromRequest(result);
169 }
170 } else {
171 resetFieldsValues();
172 }
173 }
174 }
175
176 public void combineFields() {
177 try {
178 Object value = getAggregateFieldDefinition().getCombineExpression().evaluate(new ExpressionContextImpl(this, true));
179 super.setValue(value);
180 } catch (CannotYetResolveWarning e) {
181 super.setValue(null);
182 } catch (ExpressionException e) {
183 super.setValue(null);
184 } catch (ClassCastException e) {
185 super.setValue(null);
186 }
187 }
188
189
192 private void resetFieldsValues() {
193 for (Iterator i = fields.iterator(); i.hasNext();) {
194 Field field = (Field)i.next();
195 field.setValue(null);
196 }
197 }
198
199 public boolean validate() {
200 if (!getCombinedState().isValidatingValues()) {
201 this.wasValid = true;
202 return true;
203 }
204
205 if (enteredValue != null && !fieldsHaveValues()) {
206 XMLizable failMessage = getAggregateFieldDefinition().getSplitFailMessage();
207 if (failMessage != null) {
208 validationError = new ValidationError(failMessage);
209 } else {
210 validationError = new ValidationError(new I18nMessage("aggregatedfield.split-failed",
211 new String [] { getAggregateFieldDefinition().getSplitRegexp() },
212 FormsConstants.I18N_CATALOGUE));
213 }
214 valueState = VALUE_DISPLAY_VALIDATION;
215 this.wasValid = false;
216 return false;
217 }
218
219 boolean valid = true;
221 for (Iterator i = fields.iterator(); i.hasNext();) {
222 Field field = (Field)i.next();
223 if (!field.validate()) {
224 validationError = field.getValidationError();
225 valid = false;
226 }
227 }
228 if (!valid) {
229 valueState = VALUE_DISPLAY_VALIDATION;
230 this.wasValid = false;
231 return false;
232 }
233
234 return super.validate();
235 }
236
237
240 public String getXMLElementName() {
241 return AGGREGATEFIELD_EL;
242 }
243
244 public Widget getChild(String id) {
245 return (Widget)fieldsById.get(id);
246 }
247 }
248 |
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