001/*
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *     http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018package org.apache.hadoop.hbase.hbtop.screen.top;
019
020import java.util.Objects;
021import org.apache.hadoop.hbase.hbtop.screen.ScreenView;
022import org.apache.yetus.audience.InterfaceAudience;
023
024/**
025 * The presentation logic for the message mode. Exit after 2 seconds or if any key is pressed.
026 */
027@InterfaceAudience.Private
028public class MessageModeScreenPresenter {
029
030  private final MessageModeScreenView messageModeScreenView;
031  private final String message;
032  private final ScreenView nextScreenView;
033
034  public MessageModeScreenPresenter(MessageModeScreenView messageModeScreenView, String message,
035    ScreenView nextScreenView) {
036    this.messageModeScreenView = Objects.requireNonNull(messageModeScreenView);
037    this.message = Objects.requireNonNull(message);
038    this.nextScreenView = Objects.requireNonNull(nextScreenView);
039  }
040
041  public void init() {
042    messageModeScreenView.showMessage(message);
043    messageModeScreenView.refreshTerminal();
044  }
045
046  public ScreenView returnToNextScreen() {
047    return nextScreenView;
048  }
049}