/**
    * Licensed to the Apache Software Foundation (ASF) under one
    * or more contributor license agreements.  See the NOTICE file
    * distributed with this work for additional information
    * regarding copyright ownership.  The ASF licenses this file
    * to you under the Apache License, Version 2.0 (the
    * "License"); you may not use this file except in compliance
    * with the License.  You may obtain a copy of the License at
    *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package org.apache.hadoop.hbase.hbtop.screen.top;
  
  import java.util.ArrayList;
  import java.util.List;
  
  import org.apache.commons.lang3.StringUtils;
  import org.apache.hadoop.hbase.classification.InterfaceAudience;
  import org.apache.hadoop.hbase.hbtop.RecordFilter;
  import org.apache.hadoop.hbase.hbtop.screen.AbstractScreenView;
  import org.apache.hadoop.hbase.hbtop.screen.Screen;
  import org.apache.hadoop.hbase.hbtop.screen.ScreenView;
  import org.apache.hadoop.hbase.hbtop.terminal.KeyPress;
  import org.apache.hadoop.hbase.hbtop.terminal.Terminal;
  
  /**
   * The filter display mode in the top screen.
   *
   * Exit if Enter key is pressed.
   */
  @InterfaceAudience.Private
  public class FilterDisplayModeScreenView extends AbstractScreenView {
  
    private final int row;
    private final FilterDisplayModeScreenPresenter filterDisplayModeScreenPresenter;
  
    public FilterDisplayModeScreenView(Screen screen, Terminal terminal, int row,
      List<RecordFilter> filters, ScreenView nextScreenView) {
      super(screen, terminal);
      this.row = row;
      this.filterDisplayModeScreenPresenter =
        new FilterDisplayModeScreenPresenter(this, filters, nextScreenView);
    }
  
    @Override
    public void init() {
      filterDisplayModeScreenPresenter.init();
    }
  
    @Override
    public ScreenView handleKeyPress(KeyPress keyPress) {
      if (keyPress.getType() == KeyPress.Type.Enter) {
        return filterDisplayModeScreenPresenter.returnToNextScreen();
      }
      return this;
    }
  
    public void showFilters(List<RecordFilter> filters) {
      String filtersString = "none";
      if (!filters.isEmpty()) {
        List<String> filterStrings = new ArrayList<>();
        for (RecordFilter filter : filters) {
          filterStrings.add(String.format("'%s'", filter));
        }
        filtersString = StringUtils.join(filterStrings, " + ");
      }
  
      getTerminalPrinter(row).startBold().print("<Enter> to resume, filters: " + filtersString)
        .stopBold().endOfLine();
    }
  }