1 /**
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
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 org.apache.hadoop.hbase.hbtop.screen.top;
19
20 import java.util.Objects;
21 import org.apache.hadoop.hbase.classification.InterfaceAudience;
22 import org.apache.hadoop.hbase.hbtop.screen.ScreenView;
23
24 /**
25 * The presentation logic for the message mode.
26 *
27 * Exit after 2 seconds or if any key is pressed.
28 */
29 @InterfaceAudience.Private
30 public class MessageModeScreenPresenter {
31
32 private final MessageModeScreenView messageModeScreenView;
33 private final String message;
34 private final ScreenView nextScreenView;
35
36 public MessageModeScreenPresenter(MessageModeScreenView messageModeScreenView, String message,
37 ScreenView nextScreenView) {
38 this.messageModeScreenView = Objects.requireNonNull(messageModeScreenView);
39 this.message = Objects.requireNonNull(message);
40 this.nextScreenView = Objects.requireNonNull(nextScreenView);
41 }
42
43 public void init() {
44 messageModeScreenView.showMessage(message);
45 messageModeScreenView.refreshTerminal();
46 }
47
48 public ScreenView returnToNextScreen() {
49 return nextScreenView;
50 }
51 }