Click here to Skip to main content
15,867,765 members
Articles / Multimedia / GDI

XPTable - .NET ListView meets Java's JTable

Rate me:
Please Sign up or sign in to vote.
4.97/5 (445 votes)
17 Sep 200512 min read 6.7M   55.3K   888  
A fully customisable ListView style control based on Java's JTable.
/*
 * 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.Drawing;
using System.Windows.Forms;

using XPTable.Models;


namespace XPTable.Sorting
{
	/// <summary>
	/// An IComparer for sorting Cells that contain Images
	/// </summary>
	public class ImageComparer : ComparerBase
	{
		#region Constructor
		
		/// <summary>
		/// Initializes a new instance of the ImageComparer 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 ImageComparer(TableModel tableModel, int column, SortOrder sortOrder) : base(tableModel, column, sortOrder)
		{
			
		}

		#endregion


		#region Methods
		
		/// <summary>
		/// Compares two objects and returns a value indicating whether one is less 
		/// than, equal to or greater than the other
		/// </summary>
		/// <param name="a">First object to compare</param>
		/// <param name="b">Second object to compare</param>
		/// <returns>-1 if a is less than b, 1 if a is greater than b, or 0 if a equals b</returns>
		public override int Compare(object a, object b)
		{
			Cell cell1 = (Cell) a;
			Cell cell2 = (Cell) b;
			
			// check for null cells
			if (cell1 == null && cell2 == null)
			{
				return 0;
			}
			else if (cell1 == null)
			{
				return -1;
			}
			else if (cell2 == null)
			{
				return 1;
			}

			int retVal = 0;

			// check for null data
			if (cell1.Data == null && cell2.Data == null)
			{
				retVal = 0;
			}
			else if (cell1.Data == null)
			{
				retVal = -1;
			}
			else if (cell2.Data == null)
			{
				retVal = 1;
			}

			// since images aren't comparable, if retVal = 0 and the ImageColumn 
			// they belong to allows text drawing, compare the text properties 
			// to determine order
			if (retVal == 0 && ((ImageColumn) this.TableModel.Table.ColumnModel.Columns[this.SortColumn]).DrawText)
			{
				// check for null data
				if (cell1.Text == null && cell2.Text == null)
				{
					return 0;
				}
				else if (cell1.Text == null)
				{
					return -1;
				}
			
				retVal = cell1.Text.CompareTo(cell2.Text);
			}

			return retVal;
		}

		#endregion
	}
}

By viewing downloads associated with this article you agree to the Terms of Service and the article's licence.

If a file you wish to view isn't highlighted, and is a text file (not binary), please let us know and we'll add colourisation support for it.

License

This article has no explicit license attached to it but may contain usage terms in the article text or the download files themselves. If in doubt please contact the author via the discussion board below.

A list of licenses authors might use can be found here


Written By
Web Developer
Australia Australia
This member has not yet provided a Biography. Assume it's interesting and varied, and probably something to do with programming.

Comments and Discussions