private static void OnExpandedChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
CustomTreeViewItem treeViewItem = d as CustomTreeViewItem;
if ((bool)e.NewValue)
{
RoutedEventArgs args = new RoutedEventArgs(ExpandedEvent, treeViewItem);
treeViewItem.RaiseEvent(args);
}
else
{
RoutedEventArgs args = new RoutedEventArgs(CollapsedEvent, treeViewItem);
treeViewItem.RaiseEvent(args);
}
}
internal void SetIsSelect(CustomTreeViewItem treeViewItem, bool?isSelected)
{
if (treeViewItem == null)
{
return;
}
CustomTreeView tree = GetParentTreeView();
ItemsControl parent = ItemsControl.ItemsControlFromItemContainer(treeViewItem);
if (tree != null && parent != null)
{
object data = parent.ItemContainerGenerator.ItemFromContainer(treeViewItem);
tree.ChangeSelection(data, treeViewItem, isSelected);
if (IsSelected.HasValue)
{
if (IsSelected.Value)
{
RoutedEventArgs args = new RoutedEventArgs(SelectedEvent, treeViewItem);
treeViewItem.RaiseEvent(args);
}
else
{
RoutedEventArgs args = new RoutedEventArgs(UnselectedEvent, treeViewItem);
treeViewItem.RaiseEvent(args);
}
}
}
if (tree.SelectMode != SelectionMode.Single)
{
treeViewItem.IsExpanded = true;
treeViewItem.UpdateLayout();
for (int i = 0; i < treeViewItem.Items.Count; i++)
{
CustomTreeViewItem subItem = (CustomTreeViewItem)treeViewItem.ItemContainerGenerator.ContainerFromIndex(i);
SetIsSelect(subItem, isSelected);
}
CascadingSetParentIsSelected(parent as CustomTreeViewItem);
}
}