﻿/*******************************************************************************
 * 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.Collections.Generic;
using System.Linq;
using System.Text;
using OfficeOpenXml.DataValidation.Formulas.Contracts;
using System.Xml;

namespace OfficeOpenXml.DataValidation
{
    /// <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'");
                }
            }
        }
    }
}