//
// System.Web.UI.WebControls.AutoGeneratedField.cs
//
// Authors:
//	Lluis Sanchez Gual (lluis@novell.com)
//
// (C) 2005 Novell, Inc (http://www.novell.com)
//

//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
// 
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//

#if NET_2_0
using System.Collections;
using System.Collections.Specialized;
using System.Web.UI;
using System.ComponentModel;
using System.Security.Permissions;

namespace System.Web.UI.WebControls {

	[EditorBrowsableAttribute (EditorBrowsableState.Never)]
	[AspNetHostingPermissionAttribute (SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
	[AspNetHostingPermissionAttribute (SecurityAction.InheritanceDemand, Level = AspNetHostingPermissionLevel.Minimal)]
	public sealed class AutoGeneratedField : BoundField
	{
		Type dataType = typeof(string);
		
		internal AutoGeneratedField ()
		{
		}
		
		public AutoGeneratedField (string dataField)
		{
			DataField = dataField;
		}
		
		internal AutoGeneratedField (AutoGeneratedFieldProperties fieldProperties)
		{
			DataField = fieldProperties.DataField;
			DataType = fieldProperties.Type;
			SortExpression = fieldProperties.Name;
			HeaderText = fieldProperties.Name;
			ReadOnly = fieldProperties.IsReadOnly;
		}
		
		public Type DataType {
			get { return dataType; }
			set { dataType = value; }
		}
		
		public override bool ConvertEmptyStringToNull {
			get { return true; }
			set { throw new NotSupportedException (); }
		}

		public override string DataFormatString {
			get { return string.Empty; }
			set { throw new NotSupportedException (); }
		}

		public override bool InsertVisible {
			get { return true; }
			set { throw new NotSupportedException (); }
		}
		
		[MonoTODO ("Support other data types")]
		public override void ExtractValuesFromCell (IOrderedDictionary dictionary,
			DataControlFieldCell cell, DataControlRowState rowState, bool includeReadOnly)
		{
			if (dataType == typeof(bool)) {
				bool editable = IsEditable (rowState);
				if (editable || includeReadOnly) {
					CheckBox box = (CheckBox) cell.Controls [0];
					dictionary [DataField] = box.Checked;
				}
			} else
				base.ExtractValuesFromCell (dictionary, cell, rowState, includeReadOnly);
		}
		
		
		[MonoTODO ("Support other data types")]
		protected override void InitializeDataCell (DataControlFieldCell cell, DataControlRowState rowState)
		{
			if (dataType == typeof(bool)) {
				bool editable = IsEditable (rowState);
				CheckBox box = new CheckBox ();
				box.Enabled = editable;
				box.ToolTip = HeaderText;
				cell.Controls.Add (box);
			} else
				base.InitializeDataCell (cell, rowState);
		}
		
		[MonoTODO ("Support other data types")]
		protected override void OnDataBindField (object sender, EventArgs e)
		{
			DataControlFieldCell cell = (DataControlFieldCell) sender;
			if (dataType == typeof(bool)) {
				CheckBox box = (CheckBox) cell.Controls [0];
				object val = GetValue (cell.BindingContainer);
				if (val != null && val != DBNull.Value)
					box.Checked = (bool)val;
				else
					if (string.IsNullOrEmpty (DataField)) {
						box.Visible = false;
						return;
					}
				
				if (!box.Visible)
					box.Visible = true;
			}
			else
				base.OnDataBindField (sender, e);
		}
		
		public override void ValidateSupportsCallback ()
		{
		}
		
		protected override DataControlField CreateField ()
		{
			return new AutoGeneratedField ();
		}

		protected override void CopyProperties (DataControlField newField)
		{
			base.CopyProperties (newField);
			AutoGeneratedField field = (AutoGeneratedField) newField;
			field.DataType = DataType;
		}

		protected override object GetDesignTimeValue()
		{
			return base.GetDesignTimeValue ();
		}
	}
}
#endif