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.forms.formmodel;
18:
19: import org.apache.cocoon.forms.FormsException;
20: import org.apache.cocoon.forms.event.ActionEvent;
21: import org.apache.cocoon.forms.event.ActionListener;
22: import org.apache.cocoon.forms.event.WidgetEventMulticaster;
23:
24: /**
25: * The {@link WidgetDefinition} part of a Action widget, see {@link Action} for more information.
26: *
27: * @version $Id: ActionDefinition.java 449149 2006-09-23 03:58:05Z crossley $
28: */
29: public class ActionDefinition extends AbstractWidgetDefinition {
30: private String actionCommand;
31: private ActionListener listener;
32:
33: public void setActionCommand(String actionCommand) {
34: this .actionCommand = actionCommand;
35: }
36:
37: /**
38: * initialize this definition with the other, sort of like a copy constructor
39: */
40: public void initializeFrom(WidgetDefinition definition)
41: throws Exception {
42: super .initializeFrom(definition);
43:
44: if (!(definition instanceof ActionDefinition)) {
45: throw new FormsException("Ancestor definition "
46: + definition.getClass().getName()
47: + " is not an ActionDefinition.", getLocation());
48: }
49:
50: ActionDefinition other = (ActionDefinition) definition;
51:
52: this .actionCommand = other.actionCommand;
53: this .listener = other.listener;
54: }
55:
56: public String getActionCommand() {
57: return actionCommand;
58: }
59:
60: public Widget createInstance() {
61: return new Action(this );
62: }
63:
64: public void addActionListener(ActionListener listener) {
65: checkMutable();
66: this .listener = WidgetEventMulticaster.add(this .listener,
67: listener);
68: }
69:
70: public void fireActionEvent(ActionEvent event) {
71: if (this .listener != null) {
72: this .listener.actionPerformed(event);
73: }
74: }
75:
76: public boolean hasActionListeners() {
77: return this.listener != null;
78: }
79: }
|