/// <summary>
/// show as an asynchronous operation.
/// </summary>
/// <param name="d">The d.</param>
/// <param name="parent">The parent.</param>
/// <param name="options">The options.</param>
/// <returns>System.String[].</returns>
private async Task <string[]> ShowAsync(SystemDialog d, Window parent, ManagedFileDialogOptions options = null)
{
var model = new ManagedDialogViewModel((FileSystemDialog)d,
options ?? new ManagedFileDialogOptions());
var langService = DIResolver.Get <ILanguagesService>();
var language = langService.GetSelected();
var fontResolver = DIResolver.Get <IFontFamilyManager>();
var font = fontResolver.ResolveFontFamily(language.Font);
var dialog = new T
{
Icon = StaticResources.GetAppIcon(),
Content = new ManagedDialog(),
Title = d.Title,
DataContext = model,
SizeToContent = SizeToContent.Width,
WindowStartupLocation = WindowStartupLocation.CenterOwner,
FontFamily = font.GetFontFamily(),
Height = 700
};
dialog.Closed += delegate { model.Cancel(); };
string[] result = null;
model.CompleteRequested += items =>
{
result = items;
dialog.Close();
};
model.CancelRequested += dialog.Close;
await dialog.ShowDialog <object>(parent);
return(result);
}
/// <summary>
/// Initializes a new instance of the <see cref="ManagedDialogViewModel" /> class.
/// </summary>
/// <param name="dialog">The dialog.</param>
/// <param name="options">The options.</param>
/// <exception cref="ArgumentException">dialog</exception>
public ManagedDialogViewModel(FileSystemDialog dialog, ManagedFileDialogOptions options)
{
_options = options;
_disposables = new CompositeDisposable();
var quickSources = AvaloniaLocator.Current
.GetService <ManagedDialogSources>()
?? new ManagedDialogSources();
var sub1 = AvaloniaLocator.Current
.GetService <IMountedVolumeInfoProvider>()
.Listen(ManagedDialogSources.MountedVolumes);
var sub2 = Observable.FromEventPattern(ManagedDialogSources.MountedVolumes,
nameof(ManagedDialogSources.MountedVolumes.CollectionChanged))
.ObserveOn(AvaloniaScheduler.Instance)
.Subscribe(x => RefreshQuickLinks(quickSources));
_disposables.Add(sub1);
_disposables.Add(sub2);
CompleteRequested += delegate { _disposables?.Dispose(); };
CancelRequested += delegate { _disposables?.Dispose(); };
RefreshQuickLinks(quickSources);
Title = dialog.Title ?? (
dialog is OpenFileDialog ? "Open file"
: dialog is SaveFileDialog ? "Save file"
: dialog is OpenFolderDialog ? "Select directory"
: throw new ArgumentException(nameof(dialog)));
var directory = dialog.Directory;
if (directory == null || !Directory.Exists(directory))
{
directory = Directory.GetCurrentDirectory();
}
if (dialog is FileDialog fd)
{
if (fd.Filters?.Count > 0)
{
Filters.AddRange(fd.Filters.Select(f => new ManagedDialogFilterViewModel(f)));
_selectedFilter = Filters[0];
ShowFilters = true;
}
if (dialog is OpenFileDialog ofd)
{
if (ofd.AllowMultiple)
{
SelectionMode = SelectionMode.Multiple;
}
FileName = ofd.InitialFileName;
}
}
SelectingFolder = dialog is OpenFolderDialog;
if (dialog is SaveFileDialog sfd)
{
_savingFile = true;
_defaultExtension = sfd.DefaultExtension;
FileName = sfd.InitialFileName;
}
Navigate(directory, (dialog as FileDialog)?.InitialFileName);
SelectedItems.CollectionChanged += OnSelectionChangedAsync;
}
