static void ItemClicked(object sender, MouseButtonEventArgs e)
{
TreeListViewItem item = FindTreeViewItem(e.OriginalSource);
if (item == null)
{
return;
}
TreeListView tree = (TreeListView)sender;
var mouseButton = e.ChangedButton;
if (mouseButton != MouseButton.Left)
{
if ((mouseButton == MouseButton.Right) && ((Keyboard.Modifiers & (ModifierKeys.Shift | ModifierKeys.Control)) == ModifierKeys.None))
{
if (GetIsSelected(item))
{
UpdateAnchorAndActionItem(tree, item);
return;
}
MakeSingleSelection(tree, item);
}
return;
}
if ((Keyboard.Modifiers & (ModifierKeys.Shift | ModifierKeys.Control)) != (ModifierKeys.Shift | ModifierKeys.Control))
{
if (GetIsSelected(item) && Keyboard.Modifiers != ModifierKeys.Shift && Keyboard.Modifiers != ModifierKeys.Control)
{
return;
}
else if (Keyboard.Modifiers != ModifierKeys.Shift && Keyboard.Modifiers != ModifierKeys.Control)
{
SelectedTreeItems.Clear();
}
if ((Keyboard.Modifiers & ModifierKeys.Control) == ModifierKeys.Control)
{
MakeToggleSelection(tree, item);
return;
}
if ((Keyboard.Modifiers & ModifierKeys.Shift) == ModifierKeys.Shift)
{
MakeAnchorSelection(tree, item, true);
return;
}
MakeSingleSelection(tree, item);
return;
}
}
public static void SetIsSelected(DependencyObject obj, bool value)
{
TreeListViewItem tlvi = obj as TreeListViewItem;
//if (IsKeyCtrl && tlvi.IsSelected)
//{
// return;
//}
if (value)
{
GradientStopCollection gradientStopCollection = new GradientStopCollection();
gradientStopCollection.Add(new GradientStop()
{
Color = (Color)ColorConverter.ConvertFromString("#FFC7DFFC"),
Offset = 1
});
gradientStopCollection.Add(new GradientStop()
{
Color = (Color)ColorConverter.ConvertFromString("#FF3832B8"),
Offset = 1
});
LinearGradientBrush brush = new LinearGradientBrush(gradientStopCollection, new Point(0.5, 0), new Point(0.5, 1));
tlvi.Background = brush;
if (SelectedTreeItems == null)
{
SelectedTreeItems = new List <object>();
}
if (!SelectedTreeItems.Contains(tlvi.DataContext))
{
SelectedTreeItems.Add(tlvi.DataContext);
}
}
else
{
tlvi.Background = Brushes.Transparent;
if (SelectedTreeItems != null)
{
if (SelectedTreeItems.Contains(tlvi.DataContext))
{
SelectedTreeItems.Remove(tlvi.DataContext);
}
}
}
obj.SetValue(IsSelectedProperty, value);
}