private void OnItemClick(object sender, ItemClickEventArgs args)
{
if (IsItemClickEnabled)
{
ExecuteCommandOnItem(ItemClickCommand, args.Position);
}
ItemClick?.Invoke(this, new Windows.UI.Xaml.Controls.ItemClickEventArgs {
ClickedItem = ListViewAdapter.GetItemAt(args.Position)
});
HandleItemSelection(args);
}
private void HandleItemSelection(ItemClickEventArgs args)
{
if (SelectionMode != ListViewSelectionMode.None)
{
var newSelection = ListViewAdapter.GetItemAt(args.Position);
switch (SelectionMode)
{
case ListViewSelectionMode.Single:
var selectedItem = ListViewAdapter.SelectedItems.FirstOrDefault();
// Unselect the current item only if a new selection is made or
// the option to unselect the current item is activated.
if (selectedItem != null && (selectedItem != newSelection || UnselectOnClick))
{
ListViewAdapter.SetItemSelection(selectedItem, null, false);
}
if (selectedItem != newSelection)
{
ListViewAdapter.SetItemSelection(
newSelection,
(args.View as ItemContainerHolder)?.Child as SelectorItem,
true
);
}
SelectedItem = newSelection;
if (selectedItem != newSelection)
{
SelectionChanged?.Invoke(this, new SelectionChangedEventArgs(this, new[] { selectedItem }, new[] { newSelection }));
}
break;
case ListViewSelectionMode.Multiple:
ListViewAdapter.SetItemSelection(
ListViewAdapter.GetItemAt(args.Position),
args.View as SelectorItem,
!ListViewAdapter.SelectedItems.Contains(newSelection)
);
break;
}
SelectedItems = ListViewAdapter.SelectedItems.ToArray();
}
}
protected void ExecuteCommandOnItem(ICommand command, int position)
{
if (command == null)
{
return;
}
var item = ListViewAdapter.GetItemAt(position);
if (item == null)
{
return;
}
if (!command.CanExecute(item))
{
return;
}
command.Execute(item);
}
