private static void StartEditing(ListView list, ListViewItem item, DocumentGroup group, Action <TextBox, bool> endEditingFn)
{
var edit = item.FindDescendant <TextBox>();
var visibility = Observable.FromEventPattern <DependencyPropertyChangedEventArgs>(edit, "IsVisibleChanged");
var disposables = new CompositeDisposable();
visibility.Where(re => re.EventArgs.NewValue as bool? == false)
.Take(1)
.Subscribe(re => disposables.Dispose());
visibility.Where(ivc => ivc.EventArgs.NewValue as bool? == true)
.Take(1)
.Subscribe(re =>
{
edit.SelectionStart = 0;
edit.SelectionLength = edit.Text.Length;
edit.Focus();
});
disposables.Add(Observable.FromEventPattern <RoutedEventArgs>(edit, "LostFocus")
.Take(1)
.Subscribe(re => endEditingFn(edit, false)));
disposables.Add(Observable.FromEventPattern <KeyEventArgs>(edit, "PreviewKeyUp")
.Where(re => re.EventArgs.Key == Key.Escape || re.EventArgs.Key == Key.Enter)
.Take(1)
.Subscribe(re =>
{
re.EventArgs.Handled = true;
endEditingFn(edit, re.EventArgs.Key == Key.Escape);
}));
disposables.Add(Observable.FromEventPattern <MouseEventArgs>(list, "MouseLeftButtonDown")
.Take(1)
.Subscribe(re => endEditingFn(edit, false)));
group.StartEditing();
}
