RobustToolbox/Robust.Client/UserInterface/DummyFileDialogManager.cs

using System.IO;
using System.Threading.Tasks;

namespace Robust.Client.UserInterface
{
    /// <summary>
    ///     Treats ever file dialog operation as cancelled.
    /// </summary>
    internal sealed class DummyFileDialogManager : IFileDialogManager
    {
        public Task<Stream?> OpenFile(
            FileDialogFilters? filters = null,
            FileAccess access = FileAccess.ReadWrite,
            FileShare? share = null)
        {
            return Task.FromResult<Stream?>(null);
        }

        public Task<(Stream fileStream, bool alreadyExisted)?> SaveFile(
            FileDialogFilters? filters = null,
            bool truncate = true,
            FileAccess access = FileAccess.ReadWrite,
            FileShare share = FileShare.None)
        {
            return Task.FromResult<(Stream fileStream, bool alreadyExisted)?>(null);
        }
    }
}