nxDumpFuse/src/nxDumpFuse/Services/DialogService.cs

using System.Collections.Generic;
using System.Threading.Tasks;
using Avalonia.Controls;
using nxDumpFuse.ViewModels.Interfaces;

namespace nxDumpFuse.Services
{
    public class DialogService : IDialogService
    {
        private readonly IMainWindowProvider _mainWindowProvider;

        public DialogService(IMainWindowProvider mainWindowProvider)
        {
            _mainWindowProvider = mainWindowProvider;
        }

        public async Task<string> ShowOpenFileDialogAsync(string title, FileDialogFilter filter)
        {
            var openFileDialog = new OpenFileDialog
            {
                Title = title,
                AllowMultiple = false
            };
            openFileDialog.Filters!.Add(filter);

            var result = await openFileDialog.ShowAsync(_mainWindowProvider.GetMainWindow());
            if (result == null)
            {
                return string.Empty;
            }
            return result.Length == 0 ? string.Empty : result[0];
        }

        public async Task<string> ShowOpenFolderDialogAsync(string title)
        {
            var openFolderDialog = new OpenFolderDialog()
            {
                Title = title
            };
            var result = await openFolderDialog.ShowAsync(_mainWindowProvider.GetMainWindow());
            return result ?? string.Empty;
        }
    }
}