/// <summary>
///
/// </summary>
/// <param name="Control"></param>
public static void SelectNone(this ItemsControl Control)
{
if (Control != null)
{
for (int i = 0; i < Control.Items.Count; i++)
{
var Item = Control.ItemContainerGenerator.ContainerFromIndex(i) as TreeViewItem;
if (Item != null)
{
TreeViewItemExtensions.SetIsSelected(Item, false);
SelectNone(Item);
}
}
}
}
/// <summary>
/// Select the given element, if supported; element is valid if supports <see cref="Selector.SetIsSelected(DependencyObject, bool)"/> or is <see cref="TreeViewItem"/>.
/// </summary>
/// <param name="Value"></param>
/// <param name="IsSelected"></param>
public static void Select(this DependencyObject Value, bool IsSelected)
{
if (Value.IsAny(typeof(ListBoxItem), typeof(DataGridRow)))
{
Selector.SetIsSelected(Value, IsSelected);
}
else if (Value is TreeViewItem)
{
TreeViewItemExtensions.SetIsSelected(Value as TreeViewItem, IsSelected);
}
else
{
throw new ArgumentException("Object doesn't support selection.");
}
}
/// <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="Control"></param>
/// <param name="Item"></param>
public static void Select(this ItemsControl Control, object Item)
{
if (Control != null)
{
foreach (var i in Control.Items)
{
var j = (TreeViewItem)Control.ItemContainerGenerator.ContainerFromItem(i);
if (Item == i)
{
if (j is TreeViewItem)
{
TreeViewItemExtensions.SetIsSelected(j as TreeViewItem, true);
}
}
else
{
TreeViewItemExtensions.SetIsSelected(j as TreeViewItem, false);
Select(j, Item);
}
}
}
}
/// <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);
}
}
}
}
/// <summary>
///
/// </summary>
/// <param name="TreeView"></param>
/// <param name="Item"></param>
public static void SelectItem(this TreeView TreeView, TreeViewItem Item)
{
SelectNone(TreeView);
TreeViewItemExtensions.SetIsSelected(Item, true);
TreeViewExtensions.SetStartItem(TreeView, Item);
}