﻿/*******************************************************************************
 * 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>
/// Border line style
/// </summary>
public enum ExcelBorderStyle {
  None,
  Hair,
  Dotted,
  DashDot,
  Thin,
  DashDotDot,
  Dashed,
  MediumDashDotDot,
  MediumDashed,
  MediumDashDot,
  Thick,
  Medium,
  Double,
}

/// <summary>
/// Horizontal text alignment
/// </summary>
public enum ExcelHorizontalAlignment {
  General,
  Left,
  Center,
  CenterContinuous,
  Right,
  Fill,
  Distributed,
  Justify,
}

/// <summary>
/// Vertical text alignment
/// </summary>
public enum ExcelVerticalAlignment {
  Top,
  Center,
  Bottom,
  Distributed,
  Justify,
}

/// <summary>
/// Font-Vertical Align
/// </summary>
public enum ExcelVerticalAlignmentFont {
  None,
  Subscript,
  Superscript,
}

/// <summary>
/// Font-Underlinestyle for
/// </summary>
public enum ExcelUnderLineType {
  None,
  Single,
  Double,
  SingleAccounting,
  DoubleAccounting,
}

/// <summary>
/// Fill pattern
/// </summary>
public enum ExcelFillStyle {
  None,
  Solid,
  DarkGray,
  MediumGray,
  LightGray,
  Gray125,
  Gray0625,
  DarkVertical,
  DarkHorizontal,
  DarkDown,
  DarkUp,
  DarkGrid,
  DarkTrellis,
  LightVertical,
  LightHorizontal,
  LightDown,
  LightUp,
  LightGrid,
  LightTrellis,
}

/// <summary>
/// Type of gradient fill
/// </summary>
public enum ExcelFillGradientType {
  /// <summary>
  /// No gradient fill.
  /// </summary>
  None,

  /// <summary>
  /// This gradient fill is of linear gradient type. Linear gradient type means that the transition from one color to the next is along a line (e.g., horizontal, vertical,diagonal, etc.)
  /// </summary>
  Linear,

  /// <summary>
  /// This gradient fill is of path gradient type. Path gradient type means the that the boundary of transition from one color to the next is a rectangle, defined by top,bottom, left, and right attributes on the gradientFill element.
  /// </summary>
  Path,
}

/// <summary>
/// The reading order
/// </summary>
public enum ExcelReadingOrder {
  /// <summary>
  /// Reading order is determined by scanning the text for the first non-whitespace character: if it is a strong right-to-left character, the reading order is right-to-left; otherwise, the reading order left-to-right.
  /// </summary>
  ContextDependent = 0,

  /// <summary>
  /// Left to Right
  /// </summary>
  LeftToRight = 1,

  /// <summary>
  /// Right to Left
  /// </summary>
  RightToLeft = 2,
}

public abstract class StyleBase {
  protected ExcelStyles _styles;
  internal XmlHelper.ChangedEventHandler _ChangedEvent;
  protected int _positionID;
  protected string _address;

  internal StyleBase(
      ExcelStyles styles,
      XmlHelper.ChangedEventHandler changedEvent,
      int positionId,
      string address) {
    _styles = styles;
    _ChangedEvent = changedEvent;
    _address = address;
    _positionID = positionId;
  }

  internal int Index { get; set; }

  internal abstract string Id { get; }

  internal virtual void SetIndex(int index) {
    Index = index;
  }
}