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.ArrayList;
021import java.util.Collections;
022import java.util.List;
023import java.util.Objects;
024import org.apache.hadoop.hbase.hbtop.RecordFilter;
025import org.apache.hadoop.hbase.hbtop.screen.ScreenView;
026import org.apache.yetus.audience.InterfaceAudience;
027
028/**
029 * The presentation logic for the filter display mode.
030 */
031@InterfaceAudience.Private
032public class FilterDisplayModeScreenPresenter {
033
034  private final FilterDisplayModeScreenView filterDisplayModeScreenView;
035  private final List<RecordFilter> filters;
036  private final ScreenView nextScreenView;
037
038  public FilterDisplayModeScreenPresenter(FilterDisplayModeScreenView filterDisplayModeScreenView,
039    List<RecordFilter> filters, ScreenView nextScreenView) {
040    this.filterDisplayModeScreenView = Objects.requireNonNull(filterDisplayModeScreenView);
041    this.filters = Collections.unmodifiableList(new ArrayList<>(Objects.requireNonNull(filters)));
042    this.nextScreenView = Objects.requireNonNull(nextScreenView);
043  }
044
045  public void init() {
046    filterDisplayModeScreenView.showFilters(filters);
047    filterDisplayModeScreenView.refreshTerminal();
048  }
049
050  public ScreenView returnToNextScreen() {
051    return nextScreenView;
052  }
053}