// 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: Class to create a queue on its own thread.
 
using System.Windows.Automation;
using System.Windows.Automation.Provider;
using System;
using System.Threading;
using System.Collections;
using MS.Internal.Automation;
using MS.Win32;
 
namespace MS.Internal.Automation
{
    // Worker class used to handle WinEvents
    internal class WinEventQueueItem : QueueItem
    {
        //------------------------------------------------------
        //
        //  Constructors
        //
        //------------------------------------------------------
 
        #region Constructors
 
        internal WinEventQueueItem(WinEventWrap winEventWrap, int state)
        {
            _winEventWrap = winEventWrap;
            _state = state;
        }
 
        #endregion Constructors
 
 
        //------------------------------------------------------
        //
        //  Public Constants / Readonly Fields
        //
        //------------------------------------------------------
 
        #region Public Constants and Readonly Fields
 
        internal const int StartListening = 1;
        internal const int StopListening = 2;
 
        #endregion Public Constants and Readonly Fields
 
 
        //------------------------------------------------------
        //
        //  Internal Methods
        //
        //------------------------------------------------------
 
        #region Internal Methods
 
        internal override void Process()
        {
            if (_state == StartListening)
            {
                _winEventWrap.StartListening();
            }
            else
            {
                _winEventWrap.StopListening();
            }
        }
 
        #endregion Internal Methods
 
 
        //------------------------------------------------------
        //
        //  Private Fields
        //
        //------------------------------------------------------
 
        #region Private Fields
 
        private WinEventWrap _winEventWrap;
        private int _state;
 
        #endregion Private Fields
    }
}