// 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.
//
// Copyright (c) 2005 Novell, Inc. (http://www.novell.com)
//
// Authors:
//	Peter Bartok	(pbartok@novell.com)
//
//

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

namespace System.Web.UI.WebControls {
	[DefaultEvent("ServerValidate")]
	[ToolboxData("<{0}:CustomValidator runat=server ErrorMessage=\"CustomValidator\"></{0}:CustomValidator>")]
	public class CustomValidator : BaseValidator {
		#region Public Constructors
		public CustomValidator() {
		}
		#endregion	// Public Constructors

		#region Public Instance Properties
		[DefaultValue("")]
		[WebSysDescription ("")]
		[WebCategory ("Behavior")]
		public string ClientValidationFunction {
			get {
				return ViewState.GetString("ClientValidationFunction", string.Empty);
			}

			set {
				ViewState["ClientValidationFunction"] = value;
			}
		}
		#endregion	// Public Instance Properties

		#region Public Instance Methods
		protected override void AddAttributesToRender(HtmlTextWriter writer) {
			base.AddAttributesToRender (writer);

			if (base.RenderUplevel) {
				string s;

				writer.AddAttribute("evaluationfunction", "CustomValidatorEvaluateIsValid");

				s = ClientValidationFunction;
				if (s != string.Empty) {
					writer.AddAttribute("clientvalidationfunction", s);
				}
			}
		}

		protected override bool ControlPropertiesValid() {
			return base.ControlPropertiesValid ();
		}

		protected override bool EvaluateIsValid() {
			if (ControlToValidate.Length > 0) {
				return OnServerValidate(GetControlValidationValue(ControlToValidate));
			}
			return OnServerValidate(string.Empty);
		}

		protected virtual bool OnServerValidate(string value) {
			if (ServerValidate != null) {
				ServerValidateEventArgs	e;

				e = new ServerValidateEventArgs(value, true);
				ServerValidate(this, e);
				return e.IsValid;
			}
			return true;
		}
		#endregion	// Public Instance Methods

		#region Events
		[WebSysDescription ("")]
		[WebCategory ("Behavior")]
		public event ServerValidateEventHandler ServerValidate;
		#endregion	// Events
	}
}