using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using System.Threading;
using System.Windows.Threading;

namespace WPF_DelayCall
{
    /// <summary>
    /// MainWindow.xaml 的互動邏輯
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, RoutedEventArgs e)
        {
            swipeGIF.Visibility = System.Windows.Visibility.Visible;


            //方法一：
            DelayCall(2000, () =>
            {
                swipeGIF.Visibility = System.Windows.Visibility.Collapsed;
            });

            //方法二：
            //StartCloseTimer();
        }

        public void DelayCall(int msec, Action fn)
        {
            // Grab the dispatcher from the current executing thread
            Dispatcher d = Dispatcher.CurrentDispatcher;

            // Tasks execute in a thread pool thread
            new System.Threading.Tasks.Task(() =>
            {
                System.Threading.Thread.Sleep(msec);   // delay

                // use the dispatcher to asynchronously invoke the action 
                // back on the original thread
                d.BeginInvoke(fn);
            }).Start();
        }

        private void StartCloseTimer()
        {
            DispatcherTimer timer = new DispatcherTimer();
            timer.Interval = TimeSpan.FromSeconds(2); // 2秒
            timer.Tick += TimerTick;
            timer.Start();
        }

        private void TimerTick(object sender, EventArgs e)
        {
            DispatcherTimer timer = (DispatcherTimer)sender;
            timer.Stop();
            timer.Tick -= TimerTick;

            swipeGIF.Visibility = System.Windows.Visibility.Collapsed;
        }
    }
}