private void SelectionModelSelectionChanged(object sender, SelectionModelSelectionChangedEventArgs e)
{
if (_updatingModel)
{
return;
}
if (_items == null)
{
throw new AvaloniaInternalException("SelectionModelChanged raised but we don't have items.");
}
try
{
var deselected = e.DeselectedItems.ToList();
var selected = e.SelectedItems.ToList();
_updatingItems = true;
foreach (var i in deselected)
{
_items.Remove(i);
}
foreach (var i in selected)
{
_items.Add(i);
}
}
finally
{
_updatingItems = false;
}
}
private void OnSelectionChanged(SelectionModel sender, SelectionModelSelectionChangedEventArgs args)
{
if (AutomationPeer.ListenerExists(AutomationEvents.SelectionPatternOnInvalidated))
{
var peer = (SelectionContainerAutomationPeer)FrameworkElementAutomationPeer.CreatePeerForElement(this);
peer.SelectionChanged(args);
}
}
internal void SelectionChanged(SelectionModelSelectionChangedEventArgs args)
{
RaiseAutomationEvent(AutomationEvents.SelectionPatternOnInvalidated);
}
protected virtual void OwnerSelectionChanged(object?sender, SelectionModelSelectionChangedEventArgs e)
{
RaiseSelectionChanged();
}
