/*
* Copyright � 2005, Mathew Hall
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*/
using System;
using System.Collections;
using System.Windows.Forms;
using XPTable.Models;
namespace XPTable.Sorting
{
/// <summary>
/// An IComparer for sorting Cells that contain strings
/// </summary>
public class TextComparer : ComparerBase
{
#region Constructor
/// <summary>
/// Initializes a new instance of the TextComparer class with the specified
/// TableModel, Column index and SortOrder
/// </summary>
/// <param name="tableModel">The TableModel that contains the data to be sorted</param>
/// <param name="column">The index of the Column to be sorted</param>
/// <param name="sortOrder">Specifies how the Column is to be sorted</param>
public TextComparer(TableModel tableModel, int column, SortOrder sortOrder) : base(tableModel, column, sortOrder)
{
}
#endregion
#region Methods
/// <summary>
/// Compares two cells and returns a value indicating whether one is less
/// than, equal to or greater than the other.
/// </summary>
/// <param name="cell1"></param>
/// <param name="cell2"></param>
/// <returns></returns>
protected override int CompareCells(Cell cell1, Cell cell2)
{
string s1 = cell1.Text;
string s2 = cell2.Text;
// check for null cells
if (s1 == null && s2 == null)
{
return 0;
}
else if (s1 == null)
{
return -1;
}
else if (s2 == null)
{
return 1;
}
else
{
return s1.CompareTo(s2);
}
}
#endregion
}
}