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.event;
18:
19: /**
20: * Abstract implementation of {@link FormHandler}, which checks the type
21: * of the WidgetEvent and calls the more specific {@link #handleActionEvent(ActionEvent)}
22: * or {@link #handleValueChangedEvent(ValueChangedEvent)} methods.
23: *
24: * @version $Id: AbstractFormHandler.java 449149 2006-09-23 03:58:05Z crossley $
25: */
26: public abstract class AbstractFormHandler implements FormHandler {
27:
28: public void handleEvent(WidgetEvent widgetEvent) {
29: if (widgetEvent instanceof ActionEvent)
30: handleActionEvent((ActionEvent) widgetEvent);
31: else if (widgetEvent instanceof ValueChangedEvent)
32: handleValueChangedEvent((ValueChangedEvent) widgetEvent);
33: }
34:
35: /**
36: * Called when an ActionEvent occured.
37: */
38: public abstract void handleActionEvent(ActionEvent actionEvent);
39:
40: /**
41: * Called when an ValueChangedEvent occured.
42: */
43: public abstract void handleValueChangedEvent(
44: ValueChangedEvent valueChangedEvent);
45:
46: }
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