public async Task <List <IPickableItem> > PickMany()
{
if (_candidateList.Count == 0)
{
return(null);
}
if (_candidateList.Count == 1)
{
return(_candidateList);
}
await QueuedTask.Run(() =>
{
_viewModel = new PickerViewModel(_candidateList, false);
});
if (_candidateList.Count == 0)
{
return(new List <IPickableItem>());
}
RunOnUIThread(() => { ShowPickerControl(_viewModel); });
_viewModel.DisposeOverlays();
return(_viewModel.SelectedItems.ToList() ?? null);
}
public PickerWindow(PickerViewModel vm)
{
InitializeComponent();
if (vm is PickerViewModel pickerViewModel)
{
DataContext = pickerViewModel;
}
}
private void ShowPickerControl(PickerViewModel vm)
{
PickerWindow window = new PickerWindow(vm);
ManageWindowLocation(window);
bool?accepted = window.ShowDialog();
if (accepted == false)
{
vm.SelectedItem = null;
}
vm.DisposeOverlays();
}
public async Task <IPickableItem> PickSingle()
{
if (_candidateList.Count == 0)
{
return(null);
}
if (_candidateList.Count == 1)
{
return(_candidateList.First());
}
await QueuedTask.Run(() =>
{
_viewModel =
new PickerViewModel(_candidateList, true);
});
RunOnUIThread(() => { ShowPickerControl(_viewModel); });
_viewModel.DisposeOverlays();
return(_viewModel.SelectedItem ?? null);
}