01 /*
02 * Copyright 2010-2012 the original author or authors.
03 *
04 * Licensed under the Apache License, Version 2.0 (the "License");
05 * you may not use this file except in compliance with the License.
06 * You may obtain a copy of the License at
07 *
08 * http://www.apache.org/licenses/LICENSE-2.0
09 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16 package griffon.core;
17
18 /**
19 * A ShutdownHandler may prevent the application from exiting.
20 *
21 * @author Andres Almiray
22 * @since 0.3.1
23 */
24 public interface ShutdownHandler {
25 /**
26 * Asks this handler if the application's shutdown sequence can proceed or not.<p>
27 * Return <tt>false</tt> if the shutdown sequence must be aborted.
28 *
29 * @param application the current running application
30 * @return true if the shutdown sequence can proceed, false otherwise
31 */
32 boolean canShutdown(GriffonApplication application);
33
34 /**
35 * Called when the shutdown sequence continues
36 *
37 * @param application the current running application
38 */
39 void onShutdown(GriffonApplication application);
40 }
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