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/**
026 * The presentation logic for the message mode.
027 *
028 * Exit after 2 seconds or if any key is pressed.
029 */
030@InterfaceAudience.Private
031public class MessageModeScreenPresenter {
032
033  private final MessageModeScreenView messageModeScreenView;
034  private final String message;
035  private final ScreenView nextScreenView;
036
037  public MessageModeScreenPresenter(MessageModeScreenView messageModeScreenView, String message,
038    ScreenView nextScreenView) {
039    this.messageModeScreenView = Objects.requireNonNull(messageModeScreenView);
040    this.message = Objects.requireNonNull(message);
041    this.nextScreenView = Objects.requireNonNull(nextScreenView);
042  }
043
044  public void init() {
045    messageModeScreenView.showMessage(message);
046    messageModeScreenView.refreshTerminal();
047  }
048
049  public ScreenView returnToNextScreen() {
050    return nextScreenView;
051  }
052}