/**
 * Namespace: System.Web.UI.WebControls
 * Class:     TableRow
 *
 * Author:  Gaurav Vaish
 * Maintainer: gvaish@iitk.ac.in
 * Contact: <my_scripts2001@yahoo.com>, <gvaish@iitk.ac.in>
 * Implementation: yes
 * Status:  100%
 *
 * (C) Gaurav Vaish (2002)
 */

using System;
using System.ComponentModel;
using System.Web;
using System.Web.UI;

namespace System.Web.UI.WebControls
{
	[DefaultProperty("Cells")]
	[ParseChildren(true, "Cells")]
	public class TableRow: WebControl
	{
		private TableCellCollection cells;

		public TableRow() : base (HtmlTextWriterTag.Tr)
		{
			PreventAutoID ();
		}

		public virtual TableCellCollection Cells
		{
			get {
				if (cells == null)
					cells = new TableCellCollection (this);
				return cells;
			}
		}

		public virtual HorizontalAlign HorizontalAlign
		{
			get {
				object o = ViewState ["HorizontalAlign"];
				return (o == null) ? HorizontalAlign.NotSet : (HorizontalAlign) o;
			}

			set { ViewState ["HorizontalAlign"] = value; }
		}

		public virtual VerticalAlign VerticalAlign
		{
			get {
				object o = ViewState ["VerticalAlign"];
				return (o == null) ? VerticalAlign.NotSet : (VerticalAlign) o;
			}

			set { ViewState ["VerticalAlign"] = value; }
		}

		protected override Style CreateControlStyle ()
		{
			return new TableItemStyle (ViewState);
		}

		protected override ControlCollection CreateControlCollection ()
		{
			return new CellControlCollection (this);
		}

		protected class CellControlCollection : ControlCollection
		{
			internal CellControlCollection (Control owner) : base (owner)
			{
			}

			public override void Add (Control child)
			{
				if (!(child is TableCell))
					throw new ArgumentException (HttpRuntime.FormatResourceString (
								     "Cannot_Have_Children_Of_Type",
								     "TableRow",
								     GetType ().Name.ToString ()));
				base.Add (child);
			}

			public override void AddAt(int index, Control child)
			{
				if (!(child is TableCell))
					throw new ArgumentException (HttpRuntime.FormatResourceString (
								     "Cannot_Have_Children_Of_Type",
								     "TableRow",
								     GetType ().Name.ToString ()));
				base.AddAt (index, child);
			}
		}
	}
}