01 /*
02 * SPDX-License-Identifier: Apache-2.0
03 *
04 * Copyright 2008-2017 the original author or authors.
05 *
06 * Licensed under the Apache License, Version 2.0 (the "License");
07 * you may not use this file except in compliance with the License.
08 * You may obtain a copy of the License at
09 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
17 */
18 package griffon.core;
19
20 import javax.annotation.Nonnull;
21
22 /**
23 * A ShutdownHandler may prevent the application from exiting.
24 *
25 * @author Andres Almiray
26 * @since 2.0.0
27 */
28 public interface ShutdownHandler {
29 /**
30 * Asks this handler if the application's shutdown sequence can proceed or not.<p>
31 * Return <tt>false</tt> if the shutdown sequence must be aborted.
32 *
33 * @param application the current running application
34 * @return true if the shutdown sequence can proceed, false otherwise
35 */
36 boolean canShutdown(@Nonnull GriffonApplication application);
37
38 /**
39 * Called when the shutdown sequence continues
40 *
41 * @param application the current running application
42 */
43 void onShutdown(@Nonnull GriffonApplication application);
44 }
|