/*******************************************************************************
 * You may amend and distribute as you like, but don't remove this header!
 *
 * EPPlus provides server-side generation of Excel 2007/2010 spreadsheets.
 * See http://www.codeplex.com/EPPlus for details.
 *
 * Copyright (C) 2011  Jan Källman
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.

 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU Lesser General Public License for more details.
 *
 * The GNU Lesser General Public License can be viewed at http://www.opensource.org/licenses/lgpl-license.php
 * If you unfamiliar with this license or have questions about it, here is an http://www.gnu.org/licenses/gpl-faq.html
 *
 * All code and executables are provided "as is" with no warranty either express or implied.
 * The author accepts no liability for any damage or loss of business that this product may cause.
 *
 * Code change notes:
 *
 * Author							Change						Date
 * ******************************************************************************
 * Jan Källman		                Initial Release		        2009-10-01
 * Jan Källman		License changed GPL-->LGPL 2011-12-16
 *******************************************************************************/

namespace OfficeOpenXml.Style;

/// <summary>
/// Cell Border style
/// </summary>
public sealed class Border : StyleBase {
  internal Border(ExcelStyles styles, int positionId, string address, int index)
      : base(styles, positionId, address) {
    Index = index;
  }

  /// <summary>
  /// Left border style
  /// </summary>
  public ExcelBorderItem Left => new(_styles, _positionID, _address, eStyleClass.BorderLeft, this);

  /// <summary>
  /// Right border style
  /// </summary>
  public ExcelBorderItem Right =>
    new(_styles, _positionID, _address, eStyleClass.BorderRight, this);

  /// <summary>
  /// Top border style
  /// </summary>
  public ExcelBorderItem Top => new(_styles, _positionID, _address, eStyleClass.BorderTop, this);

  /// <summary>
  /// Bottom border style
  /// </summary>
  public ExcelBorderItem Bottom =>
    new(_styles, _positionID, _address, eStyleClass.BorderBottom, this);

  /// <summary>
  /// 0Diagonal border style
  /// </summary>
  public ExcelBorderItem Diagonal =>
    new(_styles, _positionID, _address, eStyleClass.BorderDiagonal, this);

  /// <summary>
  /// A diagonal from the bottom left to top right of the cell
  /// </summary>
  public bool DiagonalUp {
    get {
      if (Index >= 0) {
        return _styles.Borders[Index].DiagonalUp;
      }
      return false;
    }
  }

  /// <summary>
  /// A diagonal from the top left to bottom right of the cell
  /// </summary>
  public bool DiagonalDown {
    get {
      if (Index >= 0) {
        return _styles.Borders[Index].DiagonalDown;
      }
      return false;
    }
  }

  internal override string Id =>
    Top.Id + Bottom.Id + Left.Id + Right.Id + Diagonal.Id + DiagonalUp + DiagonalDown;
}