private static void SelectItems(TreeViewItem treeViewItem, MultiSelectTreeView treeView)
{
if (treeViewItem != null && treeView != null)
{
bool isFunctionKeyDown = Keyboard.IsKeyDown(Key.F1) || Keyboard.IsKeyDown(Key.F2) || Keyboard.IsKeyDown(Key.F3) ||
Keyboard.IsKeyDown(Key.F4) || Keyboard.IsKeyDown(Key.F5) || Keyboard.IsKeyDown(Key.F6) ||
Keyboard.IsKeyDown(Key.F7) || Keyboard.IsKeyDown(Key.F7) || Keyboard.IsKeyDown(Key.F9) ||
Keyboard.IsKeyDown(Key.F10) || Keyboard.IsKeyDown(Key.F11) || Keyboard.IsKeyDown(Key.F12);
if (treeView.MultiSelectRootLevelOnly)
{
bool isRoot = ItemsControl.ItemsControlFromItemContainer(treeViewItem) == treeView;
if (isRoot)
{
treeView.DeselectAllChildItems();
if (Keyboard.Modifiers.HasFlag(ModifierKeys.Control | ModifierKeys.Shift) && !isFunctionKeyDown)
{
SelectMultipleItemsContinuously(treeView, treeViewItem, true);
}
else if (Keyboard.Modifiers.HasFlag(ModifierKeys.Control) && !isFunctionKeyDown)
{
SelectMultipleItemsRandomly(treeView, treeViewItem);
}
else if (Keyboard.Modifiers.HasFlag(ModifierKeys.Shift) && !isFunctionKeyDown)
{
SelectMultipleItemsContinuously(treeView, treeViewItem);
}
else
{
SelectSingleItem(treeView, treeViewItem);
}
}
else
{
SelectSingleItem(treeView, treeViewItem);
}
}
else
{
if (Keyboard.Modifiers.HasFlag(ModifierKeys.Control | ModifierKeys.Shift) && !isFunctionKeyDown)
{
SelectMultipleItemsContinuously(treeView, treeViewItem, true);
}
else if (Keyboard.Modifiers.HasFlag(ModifierKeys.Control) && !isFunctionKeyDown)
{
SelectMultipleItemsRandomly(treeView, treeViewItem);
}
else if (Keyboard.Modifiers.HasFlag(ModifierKeys.Shift) && !isFunctionKeyDown)
{
SelectMultipleItemsContinuously(treeView, treeViewItem);
}
else
{
SelectSingleItem(treeView, treeViewItem);
}
}
}
}
private static void SelectItems(TreeViewItem treeViewItem, MultiSelectTreeView treeView)
{
if (treeViewItem != null && treeView != null)
{
if (treeView.MultiSelectRootLevelOnly)
{
bool isRoot = ItemsControl.ItemsControlFromItemContainer(treeViewItem) == treeView;
if (isRoot)
{
treeView.DeselectAllChildItems();
if ((Keyboard.Modifiers & (ModifierKeys.Control | ModifierKeys.Shift)) == (ModifierKeys.Control | ModifierKeys.Shift))
{
SelectMultipleItemsContinuously(treeView, treeViewItem, true);
}
else if (Keyboard.Modifiers == ModifierKeys.Control)
{
SelectMultipleItemsRandomly(treeView, treeViewItem);
}
else if (Keyboard.Modifiers == ModifierKeys.Shift)
{
SelectMultipleItemsContinuously(treeView, treeViewItem);
}
else
{
SelectSingleItem(treeView, treeViewItem);
}
}
else
{
SelectSingleItem(treeView, treeViewItem);
}
}
else
{
if ((Keyboard.Modifiers & (ModifierKeys.Control | ModifierKeys.Shift)) == (ModifierKeys.Control | ModifierKeys.Shift))
{
SelectMultipleItemsContinuously(treeView, treeViewItem, true);
}
else if (Keyboard.Modifiers == ModifierKeys.Control)
{
SelectMultipleItemsRandomly(treeView, treeViewItem);
}
else if (Keyboard.Modifiers == ModifierKeys.Shift)
{
SelectMultipleItemsContinuously(treeView, treeViewItem);
}
else
{
SelectSingleItem(treeView, treeViewItem);
}
}
}
}
