/*******************************************************************************
 * 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
 * ******************************************************************************
 * Mats Alm   		                Added       		        2011-01-01
 * Jan Källman		                License changed GPL-->LGPL  2011-12-27
 *******************************************************************************/

using System;
using System.Xml;

namespace AppsheetEpplus;

/// <summary>
/// A validation containing a formula
/// </summary>
/// <typeparam name="T"></typeparam>
public class ExcelDataValidationWithFormula<T> : ExcelDataValidation
    where T : IExcelDataValidationFormula {
  /// <summary>
  /// Constructor
  /// </summary>
  /// <param name="worksheet"></param>
  /// <param name="address"></param>
  /// <param name="validationType"></param>
  internal ExcelDataValidationWithFormula(
      ExcelWorksheet worksheet,
      string address,
      ExcelDataValidationType validationType)
      : this(worksheet, address, validationType, null) {}

  /// <summary>
  /// Constructor
  /// </summary>
  /// <param name="worksheet">Worksheet that owns the validation</param>
  /// <param name="itemElementNode">Xml top node (dataValidations)</param>
  /// <param name="validationType">Data validation type</param>
  /// <param name="address">address for data validation</param>
  internal ExcelDataValidationWithFormula(
      ExcelWorksheet worksheet,
      string address,
      ExcelDataValidationType validationType,
      XmlNode itemElementNode)
      : base(worksheet, address, validationType, itemElementNode) {}

  /// <summary>
  /// Constructor
  /// </summary>
  /// <param name="worksheet">Worksheet that owns the validation</param>
  /// <param name="itemElementNode">Xml top node (dataValidations)</param>
  /// <param name="validationType">Data validation type</param>
  /// <param name="address">address for data validation</param>
  /// <param name="namespaceManager">for test purposes</param>
  internal ExcelDataValidationWithFormula(
      ExcelWorksheet worksheet,
      string address,
      ExcelDataValidationType validationType,
      XmlNode itemElementNode,
      XmlNamespaceManager namespaceManager)
      : base(worksheet, address, validationType, itemElementNode, namespaceManager) {}

  /// <summary>
  /// Formula - Either a {T} value (except for custom validation) or a spreadsheet formula
  /// </summary>
  public T Formula { get; protected set; }

  public override void Validate() {
    base.Validate();
    if (Operator == ExcelDataValidationOperator.Between
        || Operator == ExcelDataValidationOperator.NotBetween) {
      if (string.IsNullOrEmpty(Formula2Internal)) {
        throw new InvalidOperationException(
            "Validation of "
                + Address.Address
                + " failed: Formula2 must be set if operator is 'between' or 'notBetween'");
      }
    }
  }
}