protected override void OnKeyUp(KeyEventArgs e)
{
if (SelectionModel != null)
{
if (e.Key == Key.Escape)
{
SelectionModel.ClearSelection();
}
else if (e.Key == Key.Space)
{
Select();
}
else if (!SelectionModel.SingleSelect)
{
var isShiftPressed = Keyboard.Modifiers.HasFlag(ModifierKeys.Shift);
var isCtrlPressed = Keyboard.Modifiers.HasFlag(ModifierKeys.Control);
if (e.Key == Key.A && isCtrlPressed)
{
SelectionModel.SelectAll();
}
else if (isShiftPressed)
{
SelectionModel.SelectRangeFromAnchor(GetGroupIndex(), RepeatedIndex);
}
}
}
base.OnKeyUp(e);
}
public ListBoxPageViewModel()
{
Items = new ObservableCollection <string>(Enumerable.Range(1, 10000).Select(i => GenerateItem()));
Selection = new SelectionModel();
Selection.Select(1);
AddItemCommand = ReactiveCommand.Create(() => Items.Add(GenerateItem()));
RemoveItemCommand = ReactiveCommand.Create(() =>
{
while (Selection.SelectedItems.Count > 0)
{
Items.Remove((string)Selection.SelectedItems.First());
}
});
SelectRandomItemCommand = ReactiveCommand.Create(() =>
{
var random = new Random();
using (Selection.Update())
{
Selection.ClearSelection();
Selection.Select(random.Next(Items.Count - 1));
}
});
}
protected override void OnKeyUp(KeyEventArgs e)
{
var indexPath = GetIndexPath();
Debug.WriteLine("OnKeyUp:" + indexPath.ToString());
if (SelectionModel != null)
{
if (e.Key == Key.Escape)
{
SelectionModel.ClearSelection();
}
else if (e.Key == Key.Space)
{
SelectionModel.SelectAt(indexPath);
}
else if (!SelectionModel.SingleSelect)
{
var isShiftPressed = Keyboard.Modifiers.HasFlag(ModifierKeys.Shift);
var isCtrlPressed = Keyboard.Modifiers.HasFlag(ModifierKeys.Control);
if (e.Key == Key.A && isCtrlPressed)
{
SelectionModel.SelectAll();
}
else if (isCtrlPressed && e.Key == Key.Space)
{
if (SelectionModel.IsSelectedAt(indexPath).Value)
{
SelectionModel.DeselectAt(indexPath);
}
else
{
SelectionModel.SelectAt(indexPath);
}
}
else if (isShiftPressed)
{
SelectionModel.SelectRangeFromAnchorTo(GetIndexPath());
}
}
}
base.OnKeyUp(e);
}