public override async Task <IReadOnlyList <IStorageFolder> > OpenFolderPickerAsync(FolderPickerOpenOptions options)
{
var model = new ManagedFileChooserViewModel(options, _managedOptions);
var results = await Show(model, _parent);
return(results.Select(f => new BclStorageFolder(new DirectoryInfo(f))).ToArray());
}
public override async Task <IStorageFile?> SaveFilePickerAsync(FilePickerSaveOptions options)
{
var model = new ManagedFileChooserViewModel(options, _managedOptions);
var results = await Show(model, _parent);
return(results.FirstOrDefault() is { } result
? new BclStorageFile(new FileInfo(result))
: null);
}
private async Task <string[]> Show(ManagedFileChooserViewModel model, Window parent)
{
var dialog = new T
{
Content = new ManagedFileChooser(),
Title = model.Title,
DataContext = model
};
dialog.Closed += delegate { model.Cancel(); };
string[]? result = null;
model.CompleteRequested += items =>
{
result = items;
dialog.Close();
};
model.OverwritePrompt += async(filename) =>
{
var overwritePromptDialog = new Window()
{
Title = "Confirm Save As",
SizeToContent = SizeToContent.WidthAndHeight,
WindowStartupLocation = WindowStartupLocation.CenterOwner,
Padding = new Thickness(10),
MinWidth = 270
};
string name = Path.GetFileName(filename);
var panel = new DockPanel()
{
HorizontalAlignment = Layout.HorizontalAlignment.Stretch
};
var label = new Label()
{
Content = $"{name} already exists.\nDo you want to replace it?"
};
panel.Children.Add(label);
DockPanel.SetDock(label, Dock.Top);
var buttonPanel = new StackPanel()
{
HorizontalAlignment = Layout.HorizontalAlignment.Right,
Orientation = Layout.Orientation.Horizontal,
Spacing = 10
};
var button = new Button()
{
Content = "Yes",
HorizontalAlignment = Layout.HorizontalAlignment.Right
};
button.Click += (sender, args) =>
{
result = new string[1] {
filename
};
overwritePromptDialog.Close();
dialog.Close();
};
buttonPanel.Children.Add(button);
button = new Button()
{
Content = "No",
HorizontalAlignment = Layout.HorizontalAlignment.Right
};
button.Click += (sender, args) =>
{
overwritePromptDialog.Close();
};
buttonPanel.Children.Add(button);
panel.Children.Add(buttonPanel);
DockPanel.SetDock(buttonPanel, Dock.Bottom);
overwritePromptDialog.Content = panel;
await overwritePromptDialog.ShowDialog(dialog);
};
model.CancelRequested += dialog.Close;
await dialog.ShowDialog <object>(parent);
return(result ?? Array.Empty <string>());
}
