// Token: 0x060058F7 RID: 22775 RVA: 0x00189CAC File Offset: 0x00187EAC
private static void OnIsExpandedChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
TreeViewItem treeViewItem = (TreeViewItem)d;
bool flag = (bool)e.NewValue;
TreeView parentTreeView = treeViewItem.ParentTreeView;
if (parentTreeView != null && !flag)
{
parentTreeView.HandleSelectionAndCollapsed(treeViewItem);
}
ItemsPresenter itemsHostPresenter = treeViewItem.ItemsHostPresenter;
if (itemsHostPresenter != null)
{
treeViewItem.InvalidateMeasure();
Helper.InvalidateMeasureOnPath(itemsHostPresenter, treeViewItem, false);
}
TreeViewItemAutomationPeer treeViewItemAutomationPeer = UIElementAutomationPeer.FromElement(treeViewItem) as TreeViewItemAutomationPeer;
if (treeViewItemAutomationPeer != null)
{
treeViewItemAutomationPeer.RaiseExpandCollapseAutomationEvent((bool)e.OldValue, flag);
}
if (flag)
{
treeViewItem.OnExpanded(new RoutedEventArgs(TreeViewItem.ExpandedEvent, treeViewItem));
}
else
{
treeViewItem.OnCollapsed(new RoutedEventArgs(TreeViewItem.CollapsedEvent, treeViewItem));
}
treeViewItem.UpdateVisualState();
}
private static void OnIsExpandedChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
TreeViewItem item = (TreeViewItem)d;
bool isExpanded = (bool)e.NewValue;
TreeView tv = item.ParentTreeView;
if (tv != null)
{
if (!isExpanded)
{
tv.HandleSelectionAndCollapsed(item);
}
}
ItemsPresenter itemsHostPresenter = item.ItemsHostPresenter;
if (itemsHostPresenter != null)
{
// In case a TreeViewItem that wasn't previously expanded is now
// recycled to represent an entity that is expanded or viceversa, we
// face a situation where we need to synchronously remeasure the
// sub tree through the ItemsPresenter leading up to the ItemsHost
// panel. If we didnt do this the offsets could get skewed.
item.InvalidateMeasure();
Helper.InvalidateMeasureOnPath(itemsHostPresenter, item, false /*duringMeasure*/);
}
TreeViewItemAutomationPeer peer = UIElementAutomationPeer.FromElement(item) as TreeViewItemAutomationPeer;
if (peer != null)
{
peer.RaiseExpandCollapseAutomationEvent((bool)e.OldValue, isExpanded);
}
if (isExpanded)
{
item.OnExpanded(new RoutedEventArgs(ExpandedEvent, item));
}
else
{
item.OnCollapsed(new RoutedEventArgs(CollapsedEvent, item));
}
item.UpdateVisualState();
}