AppsheetEpplus/DataValidation/Formulas/ExcelDataValidationFormulaValue.cs

/*******************************************************************************
 * 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       		        2011-01-08
 * Jan Källman		                License changed GPL-->LGPL  2011-12-27
 *******************************************************************************/

using System.Xml;

namespace AppsheetEpplus;

/// <summary>
/// This class represents a validation formula. Its value can be specified as a value of the specified datatype or as a formula.
/// </summary>
/// <typeparam name="T"></typeparam>
internal abstract class ExcelDataValidationFormulaValue<T> : ExcelDataValidationFormula {
  /// <summary>
  /// Constructor
  /// </summary>
  /// <param name="namespaceManager">Namespacemanger of the worksheet</param>
  /// <param name="topNode">validation top node</param>
  /// <param name="formulaPath">xml path of the current formula</param>
  public ExcelDataValidationFormulaValue(
      XmlNamespaceManager namespaceManager,
      XmlNode topNode,
      string formulaPath)
      : base(namespaceManager, topNode, formulaPath) {}

  private T _value;

  /// <summary>
  /// Typed value
  /// </summary>
  public T Value {
    get => _value;
    set {
      State = FormulaState.Value;
      _value = value;
      SetXmlNodeString(FormulaPath, GetValueAsString());
    }
  }

  internal override void ResetValue() {
    Value = default(T);
  }
}