Shaker/Avalonia/ShakerApp/ViewModels/DataReview/SelectTestDataViewModel.cs

using Avalonia.Controls.ApplicationLifetimes;
using Avalonia.Controls;
using Avalonia.Platform.Storage;
using CommunityToolkit.Mvvm.Input;
using Shaker.Models;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Input;
using Avalonia;
using Avalonia.Data.Converters;

namespace ShakerApp.ViewModels
{
    internal class SelectTestDataViewModel:DisplayViewModelBase<IModel>
    {
        public override string OKContent => "Confirm";
        public override bool CanResize => false;
        public override double Height => 320;
        public override double Width => 620;
        private string selectedFile = string.Empty;

        private SelectTestDataViewModel()
        {
            Content = typeof(Views.LoadTestDataView);
        }
        static SelectTestDataViewModel()
        {

        }
        public string SelectedFile { get => selectedFile; set => SetProperty(ref selectedFile, value); }
        public override void InitData()
        {
            base.InitData();
            SelectedFile = string.Empty;
        }
        protected override async void Save()
        {
            base.Save();
            if(!string.IsNullOrEmpty(SelectedFile) && System.IO.File.Exists(SelectedFile))
            {
                await Task.Delay(1);
                if (Application.Current?.ApplicationLifetime is IClassicDesktopStyleApplicationLifetime desktop)
                {
                    DataReviewViewModel.Instance.InitData();
                    DataReviewViewModel.Instance.Title = "DataReview";
                    BaseDialogWindow window = new BaseDialogWindow();
                    window.DataContext = DataReviewViewModel.Instance;
                    DeviceMangerViewModel.Instance.CloseWindowAction = () => window?.Close();
                    DataReviewViewModel.Instance.OpenFile(SelectedFile);
                    await window.ShowDialog(desktop.MainWindow!);
                }
            }
        }

        public ICommand SelectFileCommand => new RelayCommand<string?>(SelectFile);
        private async void SelectFile(string? p)
        {
            if (Application.Current?.ApplicationLifetime is IClassicDesktopStyleApplicationLifetime desktop)
            {
                var folder = await TopLevel.GetTopLevel(desktop.MainWindow)!.StorageProvider.OpenFilePickerAsync(new Avalonia.Platform.Storage.FilePickerOpenOptions()
                {
                    AllowMultiple = false,
                    Title = p == null ? "" : App.Current?.FindResource(p) + "",
                    FileTypeFilter = new FilePickerFileType[]
                    {
                        new FilePickerFileType($"{(p ==null ?"": App.Current?.FindResource(p) + "")}"){ Patterns = new []{"*.tdms" } }
                    }
                });
                if (folder != null && folder.Count > 0)
                {
                    SelectedFile = folder.First().Path.LocalPath;
                }
            }
        }
        public static SelectTestDataViewModel Instance { get; } = new SelectTestDataViewModel();
    }
}