protected override void OnKeyDown(System.Windows.Input.KeyEventArgs e)
{
if (ParentTreeListView != null)
{
ParentTreeListView.SelectSource = SelectionSource.Keyboard;
}
bool wasSelected = IsSelected;
base.OnKeyDown(e);
if (wasSelected && !IsSelected)
{
if (SupportsMultiSelect && IsShiftPressed)
{
IsMultiSelected = true;
}
else
{
ParentTreeListView.CleanupMultiSelects();
}
}
if (ParentTreeListView != null)
{
ParentTreeListView.SelectSource = SelectionSource.Unknown;
}
}
protected override void OnMouseLeftButtonDown(System.Windows.Input.MouseButtonEventArgs e)
{
bool wasMultiSelected = IsMultiSelected;
bool multiSelect = SupportsMultiSelect && (IsShiftPressed || IsCtrlPressed) && ParentTreeListView != null;
if (multiSelect)
{
ParentTreeListView.BeginMultiSelect();
}
if (ParentTreeListView != null)
{
ParentTreeListView.SelectSource = SelectionSource.Mouse;
}
base.OnMouseLeftButtonDown(e);
if (multiSelect)
{
if (IsShiftPressed)
{
ParentTreeListView.MultiSelectTo(this);
}
ParentTreeListView.EndMultiSelect();
}
if (!multiSelect && !wasMultiSelected)
{
ParentTreeListView.CleanupMultiSelects();
}
if (ParentTreeListView != null)
{
ParentTreeListView.SelectSource = SelectionSource.Unknown;
}
}
protected override void OnMouseLeftButtonUp(MouseButtonEventArgs e)
{
base.OnMouseLeftButtonUp(e);
if (!IsShiftPressed && !IsCtrlPressed && ParentTreeListView != null)
{
ParentTreeListView.CleanupMultiSelects();
}
}
protected override void OnUnselected(RoutedEventArgs e)
{
if (ParentTreeListView == null || (!ParentTreeListView.InMultiSelect && ParentTreeListView.SelectSource != SelectionSource.Mouse))
{
IsMultiSelected = false;
}
base.OnUnselected(e);
if (ParentTreeListView != null && ParentTreeListView.SelectSource == SelectionSource.Unknown)
{
ParentTreeListView.CleanupMultiSelects();
}
}