Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||||||
ListenerInvokerTerminator |
|
| 2.0;2 |
1 | // Copyright 2005 The Apache Software Foundation |
|
2 | // |
|
3 | // Licensed under the Apache License, Version 2.0 (the "License"); |
|
4 | // you may not use this file except in compliance with the License. |
|
5 | // You may obtain a copy of the License at |
|
6 | // |
|
7 | // http://www.apache.org/licenses/LICENSE-2.0 |
|
8 | // |
|
9 | // Unless required by applicable law or agreed to in writing, software |
|
10 | // distributed under the License is distributed on an "AS IS" BASIS, |
|
11 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
|
12 | // See the License for the specific language governing permissions and |
|
13 | // limitations under the License. |
|
14 | ||
15 | package org.apache.tapestry.listener; |
|
16 | ||
17 | import org.apache.hivemind.util.Defense; |
|
18 | import org.apache.tapestry.IActionListener; |
|
19 | import org.apache.tapestry.IComponent; |
|
20 | import org.apache.tapestry.IRequestCycle; |
|
21 | ||
22 | /** |
|
23 | * Terminator implementation for the tapestry.listener.InvokeListener pipeline; |
|
24 | * this is what finally turns around and invokes |
|
25 | * {@link org.apache.tapestry.IActionListener#actionTriggered(IComponent, IRequestCycle)}. |
|
26 | * |
|
27 | * @author Howard M. Lewis Ship |
|
28 | * @since 4.0 |
|
29 | */ |
|
30 | 5 | public class ListenerInvokerTerminator implements ListenerInvoker |
31 | { |
|
32 | ||
33 | /** |
|
34 | * @param listener |
|
35 | * to be invoked, may be null if no listener is found (a |
|
36 | * convienience for all the places where listeners are optional) |
|
37 | * @param source |
|
38 | * the component generating the listener "event", to be passed to |
|
39 | * the listener. Not generally used, but may not be null. |
|
40 | * @param cycle |
|
41 | * the current request cycle, to be passed to the listener. |
|
42 | */ |
|
43 | public void invokeListener(IActionListener listener, IComponent source, |
|
44 | IRequestCycle cycle) |
|
45 | { |
|
46 | 6 | Defense.notNull(source, "source"); |
47 | 6 | Defense.notNull(cycle, "cycle"); |
48 | ||
49 | 6 | if (listener != null) |
50 | 6 | listener.actionTriggered(source, cycle); |
51 | 6 | } |
52 | ||
53 | } |