1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * 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.jetspeed.portlets.layout;
18
19 /***
20 *
21 * Interface to be implemented by classes that want to handle
22 * LayoutEvents
23 *
24 * @author <href a="mailto:weaver@apache.org">Scott T. Weaver</a>
25 * @see LayoutEvent
26 * @see org.apache.jetspeed.portlets.layout.ColumnLayout
27 */
28 public interface LayoutEventListener
29 {
30 /***
31 * Invoked anytime a LayoutEvent is dispatched.
32 *
33 * @param event LayoutEvent that has been dispatched.
34 * @throws LayoutEventException if an error occurs will processing the event.
35 */
36 void handleEvent(LayoutEvent event) throws LayoutEventException;
37 }