Silverlight DoubleClickHelper 双击事件模拟类

using System;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Ink;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;

namespace SFiresoft.Util
{
    /// <summary>
    /// 鼠标双击监测辅助类
    /// </summary>
    public class DoubleClickHelper
    {
        private System.Windows.Threading.DispatcherTimer _doubleClickTimer;

        public static DoubleClickHelper _DoubleClickHelper = null;

        public static DoubleClickHelper getInstance()
        {
            if (_DoubleClickHelper == null)
            {
                _DoubleClickHelper = new DoubleClickHelper();
            }

            return _DoubleClickHelper;
        }

        public object TargetObject { get; set; }

        private DoubleClickHelper()
        {
            _doubleClickTimer = new System.Windows.Threading.DispatcherTimer();
            _doubleClickTimer.Interval = new TimeSpan(0, 0, 0, 0, 300);
            _doubleClickTimer.Tick += new EventHandler(DoubleClick_Timer); _doubleClickTimer.Stop();
        }

        void DoubleClick_Timer(object sender, EventArgs e)
        {
            _doubleClickTimer.Stop();
        }

        /// <summary>        
        /// 检测当前是否为双击事件
        /// /// </summary>        
        /// <returns></returns>
        public bool IsDoubleClick(object targetObject)
        {
            if (object.ReferenceEquals(targetObject, this.TargetObject))
            {
                if (_doubleClickTimer.IsEnabled)
                {
                    _doubleClickTimer.Stop();
                    return true;
                }
                else
                {
                    _doubleClickTimer.Start();
                    return false;
                }
            }
            else
            {
                _doubleClickTimer.Start();
                this.TargetObject = targetObject;
                return false;
            }
            
        }
    }
}

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