/// <summary>
///
/// </summary>
/// <param name="TreeView"></param>
/// <param name="TreeViewItem"></param>
public static void SelectItemsRandomly(this TreeView TreeView, TreeViewItem TreeViewItem)
{
TreeViewItemExtensions.SetIsSelected(TreeViewItem, !TreeViewItemExtensions.GetIsSelected(TreeViewItem));
if (TreeViewExtensions.GetStartItem(TreeView) == null || Keyboard.Modifiers == ModifierKeys.Control)
{
if (TreeViewItemExtensions.GetIsSelected(TreeViewItem))
{
TreeViewExtensions.SetStartItem(TreeView, TreeViewItem);
}
}
else
{
if (TreeViewExtensions.GetSelectedItems(TreeView).Count == 0)
{
TreeViewExtensions.SetStartItem(TreeView, null);
}
}
}
/// <summary>
///
/// </summary>
/// <param name="TreeView"></param>
/// <param name="TreeViewItem"></param>
/// <param name="ShiftControl"></param>
public static void SelectItemsContinuously(this TreeView TreeView, TreeViewItem TreeViewItem, bool ShiftControl = false)
{
var StartItem = TreeViewExtensions.GetStartItem(TreeView);
if (StartItem != null)
{
if (StartItem == TreeViewItem)
{
SelectItem(TreeView, TreeViewItem);
return;
}
var AllItems = new List <TreeViewItem>();
GetAllItems(TreeView, AllItems);
bool IsBetween = false;
foreach (var Item in AllItems)
{
if (Item == TreeViewItem || Item == StartItem)
{
//Toggle to true if first element is found and back to false if last element is found
IsBetween = !IsBetween;
//Set boundary element
TreeViewItemExtensions.SetIsSelected(Item, true);
continue;
}
if (IsBetween)
{
TreeViewItemExtensions.SetIsSelected(Item, true);
continue;
}
if (!ShiftControl)
{
TreeViewItemExtensions.SetIsSelected(Item, false);
}
}
}
}