private static void OnParentDataGridControlChanged(DependencyObject sender, DependencyPropertyChangedEventArgs e)
{
HierarchicalGroupLevelIndicatorPane self = sender as HierarchicalGroupLevelIndicatorPane;
if (self != null)
{
DataGridControl grid = e.OldValue as DataGridControl;
//unsubsribe from the old DataGridControl (the GLIP was disconnected)
if (grid != null)
{
DetailsChangedEventManager.RemoveListener(grid, self);
}
grid = e.NewValue as DataGridControl;
//register to the parent grid control's Items Collection GroupDescriptions Changed event
if (grid != null)
{
self.PrepareDefaultStyleKey(grid.GetView());
DetailsChangedEventManager.AddListener(grid, self);
self.InvalidateMeasure();
}
}
}
private static void OnDataGridContextChanged(DependencyObject sender, DependencyPropertyChangedEventArgs e)
{
HierarchicalGroupLevelIndicatorPane self = ( HierarchicalGroupLevelIndicatorPane )sender;
Panel panel = self.GroupLevelIndicatorPaneHost;
if (panel != null)
{
panel.Children.Clear();
}
}