private void Tree_Collapsed(MUXC.TreeView sender, MUXC.TreeViewCollapsedEventArgs args)
{
if (args.Node is CancellableTreeViewNode ctvn)
{
ctvn.TokenSource.Cancel();
ctvn.IsExpanded = false;
}
args.Node.Children.Clear();
args.Node.HasUnrealizedChildren = true;
}
private void Tree_Collapsed(MUXC.TreeView sender, MUXC.TreeViewCollapsedEventArgs args)
{
if (args.Item is ListWrapper listWrapper)
{
listWrapper.TokenSource.Cancel();
listWrapper.Expanded = false;
listWrapper.Children.Clear();
listWrapper.HasUnrealizedChildren = true;
}
}
private void OnNodeCollapsed(TreeViewNode sender, object args)
{
var treeViewCollapsedEventArgs = new TreeViewCollapsedEventArgs(sender);
if (ListControl != null)
{
if (ContainerFromNode(sender) is TreeViewItem collapsedTvi)
{
//Update TVI properties
if (collapsedTvi.IsExpanded)
{
collapsedTvi.IsExpanded = false;
}
//Update TemplateSettings properties
var templateSettings = collapsedTvi.TreeViewItemTemplateSettings;
templateSettings.ExpandedGlyphVisibility = Visibility.Collapsed;
templateSettings.CollapsedGlyphVisibility = Visibility.Visible;
}
Collapsed?.Invoke(this, treeViewCollapsedEventArgs);
}
}
private void UnrealizedTreeViewSelection_Collapsed(Microsoft.UI.Xaml.Controls.TreeView sender, Microsoft.UI.Xaml.Controls.TreeViewCollapsedEventArgs args)
{
VirtualizingDataSource.EmptyTreeNode(args.Node);
}
