Flow.Launcher/Flow.Launcher/MsgWithButton.xaml.cs

using System;
using System.IO;
using System.Windows;
using System.Windows.Input;
using System.Windows.Media.Animation;
using Flow.Launcher.Infrastructure;
using Flow.Launcher.Plugin.SharedModels;

namespace Flow.Launcher
{
    public partial class MsgWithButton : Window
    {
        private readonly Storyboard fadeOutStoryboard = new();
        private bool closing;

        public MsgWithButton()
        {
            InitializeComponent();
            var screen = MonitorInfo.GetCursorDisplayMonitor();
            var dipWorkingArea = Win32Helper.TransformPixelsToDIP(this,
                screen.WorkingArea.Width,
                screen.WorkingArea.Height);
            Left = dipWorkingArea.X - Width;
            Top = dipWorkingArea.Y;
            showAnimation.From = dipWorkingArea.Y;
            showAnimation.To = dipWorkingArea.Y - Height;

            // Create the fade out storyboard
            fadeOutStoryboard.Completed += fadeOutStoryboard_Completed;
            DoubleAnimation fadeOutAnimation = new DoubleAnimation(dipWorkingArea.Y - Height, dipWorkingArea.Y, new Duration(TimeSpan.FromSeconds(5)))
            {
                AccelerationRatio = 0.2
            };
            Storyboard.SetTarget(fadeOutAnimation, this);
            Storyboard.SetTargetProperty(fadeOutAnimation, new PropertyPath(TopProperty));
            fadeOutStoryboard.Children.Add(fadeOutAnimation);

            _ = LoadImageAsync();
            
            imgClose.MouseUp += imgClose_MouseUp;
        }

        private async System.Threading.Tasks.Task LoadImageAsync()
        {
            imgClose.Source = await App.API.LoadImageAsync(Path.Combine(Constant.ProgramDirectory, "Images\\close.png"));
        }

        void imgClose_MouseUp(object sender, MouseButtonEventArgs e)
        {
            if (!closing)
            {
                closing = true;
                fadeOutStoryboard.Begin();
            }
        }

        private void fadeOutStoryboard_Completed(object sender, EventArgs e)
        {
            Close();
        }

        [System.Diagnostics.CodeAnalysis.SuppressMessage("Usage", "VSTHRD100:Avoid async void methods", Justification = "<Pending>")]
        public async void Show(string title, string buttonText, Action buttonAction, string subTitle, string iconPath)
        {
            tbTitle.Text = title;
            tbSubTitle.Text = subTitle;
            btn.Content = buttonText;
            btn.Click += (s, e) => buttonAction();
            if (string.IsNullOrEmpty(subTitle))
            {
                tbSubTitle.Visibility = Visibility.Collapsed;
            }
            
            if (!File.Exists(iconPath))
            {
                imgIco.Source = await App.API.LoadImageAsync(Path.Combine(Constant.ProgramDirectory, "Images\\app.png"));
            }
            else 
            {
                imgIco.Source = await App.API.LoadImageAsync(iconPath);
            }

            Show();

            await Dispatcher.InvokeAsync(async () =>
            {
                if (!closing)
                {
                    closing = true;
                    await Dispatcher.InvokeAsync(fadeOutStoryboard.Begin);
                }
            });
        }
    }
}