/**
    * 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.terminal.impl;
  
  import java.util.Objects;
  
  import org.apache.hadoop.hbase.classification.InterfaceAudience;
  import org.apache.hadoop.hbase.hbtop.terminal.Attributes;
  import org.apache.hadoop.hbase.hbtop.terminal.Color;
  
  /**
   * Represents a single text cell of the terminal.
   */
  @InterfaceAudience.Private
  public class Cell {
    private static final char UNSET_VALUE = (char) 65535;
    private static final char END_OF_LINE = '\0';
  
    private final Attributes attributes;
    private char ch;
  
    public Cell() {
      attributes = new Attributes();
      ch = ' ';
    }
  
    public char getChar() {
      return ch;
    }
  
    public void setChar(char ch) {
      this.ch = ch;
    }
  
    public void reset() {
      attributes.reset();
      ch = ' ';
    }
  
    public void unset() {
      attributes.reset();
      ch = UNSET_VALUE;
    }
  
    public void endOfLine() {
      attributes.reset();
      ch = END_OF_LINE;
    }
  
    public boolean isEndOfLine() {
      return ch == END_OF_LINE;
    }
  
    public void set(Cell cell) {
      attributes.set(cell.attributes);
      this.ch = cell.ch;
    }
  
    public Attributes getAttributes() {
      return new Attributes(attributes);
    }
  
    public void setAttributes(Attributes attributes) {
      this.attributes.set(attributes);
    }
  
    public boolean isBold() {
      return attributes.isBold();
    }
  
    public boolean isBlink() {
      return attributes.isBlink();
    }
  
    public boolean isReverse() {
      return attributes.isReverse();
    }
  
    public boolean isUnderline() {
      return attributes.isUnderline();
    }
  
    public Color getForegroundColor() {
      return attributes.getForegroundColor();
   }
 
   public Color getBackgroundColor() {
     return attributes.getBackgroundColor();
   }
 
   @Override
   public boolean equals(Object o) {
     if (this == o) {
       return true;
     }
     if (!(o instanceof Cell)) {
       return false;
     }
     Cell cell = (Cell) o;
     return ch == cell.ch && attributes.equals(cell.attributes);
   }
 
   @Override
   public int hashCode() {
     return Objects.hash(attributes, ch);
   }
 }