private void TimeLine_PreviewMouseDown(object sender, MouseButtonEventArgs e)
{
FrameworkElement element = null;
try
{
element = ((FrameworkElement)e.OriginalSource).TemplatedParent as FrameworkElement;
}
catch (InvalidCastException)
{
return;
}
AllItems.ForEach(i => i.IsSelected = false);
SelectedItem = null;
if (element is TrackItem trackItem)
{
trackItem.IsSelected = true;
SelectedItem = trackItem;
ItemSelected?.Invoke(trackItem, new EventArgs());
}
else
{
ItemDeselected?.Invoke(null, new EventArgs());
}
}
protected virtual void OnDeselected()
{
if (ExpandOnSelect)
{
Collapse();
}
ItemDeselected?.Invoke(this);
}
private void UserControl_Tapped(object sender, TappedRoutedEventArgs e)
{
if (IsSelected && ItemDeselected != null)
{
ItemDeselected?.Invoke(sender, null);
}
if (!IsSelected && ItemSelected != null)
{
ItemSelected?.Invoke(sender, null);
}
IsSelected = !IsSelected;
}
private void ToggleItemIsSelected(SelectedAndTextAndTag clickedItem)
{
// toggle selection
if (clickedItem == null)
{
return;
}
if (!clickedItem.IsSelected)
{
clickedItem.IsSelected = true;
ItemSelected?.Invoke(this, clickedItem.TextAndTag);
}
else if (IsMultiSelectCheckBoxEnabled)
{
clickedItem.IsSelected = false;
ItemDeselected?.Invoke(this, clickedItem.TextAndTag);
}
}