01: /*
02: * Licensed to the Apache Software Foundation (ASF) under one or more
03: * contributor license agreements. See the NOTICE file distributed with
04: * this work for additional information regarding copyright ownership.
05: * The ASF licenses this file to You under the Apache License, Version 2.0
06: * (the "License"); you may not use this file except in compliance with
07: * the License. You may obtain a copy of the License at
08: *
09: * http://www.apache.org/licenses/LICENSE-2.0
10: *
11: * Unless required by applicable law or agreed to in writing, software
12: * distributed under the License is distributed on an "AS IS" BASIS,
13: * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14: * See the License for the specific language governing permissions and
15: * limitations under the License.
16: */
17: package org.apache.cocoon.woody.formmodel;
18:
19: import java.util.Iterator;
20:
21: import org.w3c.dom.Element;
22: import org.apache.cocoon.woody.util.DomHelper;
23: import org.apache.cocoon.woody.Constants;
24: import org.apache.cocoon.woody.datatype.Datatype;
25: import org.apache.cocoon.woody.event.ValueChangedListener;
26:
27: /**
28: * Builds {@link MultiValueFieldDefinition}s.
29: *
30: * @version $Id: MultiValueFieldDefinitionBuilder.java 433543 2006-08-22 06:22:54Z crossley $
31: */
32: public class MultiValueFieldDefinitionBuilder extends
33: AbstractDatatypeWidgetDefinitionBuilder {
34: public WidgetDefinition buildWidgetDefinition(Element widgetElement)
35: throws Exception {
36: MultiValueFieldDefinition definition = new MultiValueFieldDefinition();
37: setLocation(widgetElement, definition);
38: setId(widgetElement, definition);
39: setDisplayData(widgetElement, definition);
40: setValidators(widgetElement, definition);
41:
42: Element datatypeElement = DomHelper.getChildElement(
43: widgetElement, Constants.WD_NS, "datatype");
44: if (datatypeElement == null)
45: throw new Exception(
46: "A nested datatype element is required for the widget specified at "
47: + DomHelper.getLocation(widgetElement));
48:
49: Datatype datatype = datatypeManager.createDatatype(
50: datatypeElement, true);
51: definition.setDatatype(datatype);
52:
53: boolean hasSelectionList = buildSelectionList(widgetElement,
54: definition);
55: if (!hasSelectionList)
56: throw new Exception(
57: "Error: multivaluefields always require a selectionlist at "
58: + DomHelper.getLocation(widgetElement));
59:
60: boolean required = DomHelper.getAttributeAsBoolean(
61: widgetElement, "required", false);
62: definition.setRequired(required);
63:
64: Iterator iter = buildEventListeners(widgetElement,
65: "on-value-changed", ValueChangedListener.class)
66: .iterator();
67: while (iter.hasNext()) {
68: definition
69: .addValueChangedListener((ValueChangedListener) iter
70: .next());
71: }
72: return definition;
73: }
74: }
|