01 /*
02 * Copyright 2008-2014 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 import javax.annotation.Nonnull;
19
20 /**
21 * A ShutdownHandler may prevent the application from exiting.
22 *
23 * @author Andres Almiray
24 * @since 2.0.0
25 */
26 public interface ShutdownHandler {
27 /**
28 * Asks this handler if the application's shutdown sequence can proceed or not.<p>
29 * Return <tt>false</tt> if the shutdown sequence must be aborted.
30 *
31 * @param application the current running application
32 * @return true if the shutdown sequence can proceed, false otherwise
33 */
34 boolean canShutdown(@Nonnull GriffonApplication application);
35
36 /**
37 * Called when the shutdown sequence continues
38 *
39 * @param application the current running application
40 */
41 void onShutdown(@Nonnull GriffonApplication application);
42 }
|