// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
 
//
// Description: Filter event arguments
//
// Specs:       CollectionViewSource.mht
//
 
using System;
 
namespace System.Windows.Data
{
    /// <summary>
    /// Arguments for the Filter event.
    /// </summary>
    /// <remarks>
    /// <p>The event receiver should set Accepted to true if the item
    /// passes the filter, or false if it fails.</p>
    /// </remarks>
    public class FilterEventArgs : EventArgs
    {
        //------------------------------------------------------
        //
        //  Constructors
        //
        //------------------------------------------------------
 
        internal FilterEventArgs(object item)
        {
            _item = item;
            _accepted = true;
        }
 
        //------------------------------------------------------
        //
        //  Public Properties
        //
        //------------------------------------------------------
 
        /// <summary>
        /// The object to be tested by the filter.
        /// </summary>
        public object Item
        {
            get { return _item; }
        }
 
        /// <summary>
        /// The return value of the filter.
        /// </summary>
        public bool Accepted
        {
            get { return _accepted; }
            set { _accepted = value; }
        }
 
        //------------------------------------------------------
        //
        //  Private Fields
        //
        //------------------------------------------------------
 
        private object _item;
        private bool _accepted;
    }
 
    /// <summary>
    ///     The delegate to use for handlers that receive FilterEventArgs.
    /// </summary>
    public delegate void FilterEventHandler(object sender, FilterEventArgs e);
}