// Token: 0x06005918 RID: 22808 RVA: 0x00189F90 File Offset: 0x00188190
private void Select(bool selected)
{
TreeView parentTreeView = this.ParentTreeView;
ItemsControl parentItemsControl = this.ParentItemsControl;
if (parentTreeView != null && parentItemsControl != null && !parentTreeView.IsSelectionChangeActive)
{
object itemOrContainerFromContainer = parentItemsControl.GetItemOrContainerFromContainer(this);
parentTreeView.ChangeSelection(itemOrContainerFromContainer, this, selected);
if (selected && parentTreeView.IsKeyboardFocusWithin && !base.IsKeyboardFocusWithin)
{
base.Focus();
}
}
}
/// <summary>Provides class handling for the <see cref="E:System.Windows.Controls.ItemContainerGenerator.ItemsChanged" /> event that occurs when there is a change in the <see cref="P:System.Windows.Controls.ItemsControl.Items" /> collection.</summary>
/// <param name="e">The event data.</param>
// Token: 0x06005933 RID: 22835 RVA: 0x0018A578 File Offset: 0x00188778
protected override void OnItemsChanged(NotifyCollectionChangedEventArgs e)
{
switch (e.Action)
{
case NotifyCollectionChangedAction.Add:
case NotifyCollectionChangedAction.Move:
break;
case NotifyCollectionChangedAction.Remove:
case NotifyCollectionChangedAction.Reset:
if (this.ContainsSelection)
{
TreeView parentTreeView = this.ParentTreeView;
if (parentTreeView != null && !parentTreeView.IsSelectedContainerHookedUp)
{
this.ContainsSelection = false;
this.Select(true);
return;
}
}
break;
case NotifyCollectionChangedAction.Replace:
if (this.ContainsSelection)
{
TreeView parentTreeView2 = this.ParentTreeView;
if (parentTreeView2 != null)
{
object selectedItem = parentTreeView2.SelectedItem;
if (selectedItem != null && selectedItem.Equals(e.OldItems[0]))
{
parentTreeView2.ChangeSelection(selectedItem, parentTreeView2.SelectedContainer, false);
return;
}
}
}
break;
default:
throw new NotSupportedException(SR.Get("UnexpectedCollectionChangeAction", new object[]
{
e.Action
}));
}
}
private void Select(bool selected)
{
TreeView tree = ParentTreeView;
ItemsControl parent = ParentItemsControl;
if ((tree != null) && (parent != null) && !tree.IsSelectionChangeActive)
{
// Give the TreeView a reference to this container and its data
object data = parent.GetItemOrContainerFromContainer(this);
tree.ChangeSelection(data, this, selected);
// Making focus of TreeViewItem synchronize with selection if needed.
if (selected && tree.IsKeyboardFocusWithin && !IsKeyboardFocusWithin)
{
Focus();
}
}
}
/// <summary>
/// This method is invoked when the Items property changes.
/// </summary>
protected override void OnItemsChanged(NotifyCollectionChangedEventArgs e)
{
switch (e.Action)
{
case NotifyCollectionChangedAction.Remove:
case NotifyCollectionChangedAction.Reset:
if (ContainsSelection)
{
TreeView tree = ParentTreeView;
if ((tree != null) && !tree.IsSelectedContainerHookedUp)
{
ContainsSelection = false;
Select(true);
}
}
break;
case NotifyCollectionChangedAction.Replace:
if (ContainsSelection)
{
TreeView tree = ParentTreeView;
if (tree != null)
{
// When Selected item is replaced - remove the selection
// Revisit the condition when we support duplicate items in Items collection: if e.OldItems[0] is the same as selected items we will unselect the selected item
object selectedItem = tree.SelectedItem;
if ((selectedItem != null) && selectedItem.Equals(e.OldItems[0]))
{
tree.ChangeSelection(selectedItem, tree.SelectedContainer, false);
}
}
}
break;
case NotifyCollectionChangedAction.Add:
case NotifyCollectionChangedAction.Move:
break;
default:
throw new NotSupportedException(SR.Get(SRID.UnexpectedCollectionChangeAction, e.Action));
}
}
