private void ShiftSelectItems(ITreeItem startItem, ITreeItem endItem)
{
//Unselect
SelectedItemSet.UnselectItems();
//Select
SelectedItemSet.AddSelectedItem(startItem);
ITreeItem[] items = CollectItems();
int startIndex = Array.IndexOf(items, startItem);
int endIndex = Array.IndexOf(items, endItem);
if (startIndex > endIndex)
{
int tempValue = endIndex;
endIndex = startIndex;
startIndex = tempValue;
}
for (int i = startIndex; i <= endIndex; ++i)
{
ITreeItem targetItem = items[i];
if (targetItem != startItem)
{
if (SelectedItemSet.Contains(targetItem))
{
SelectedItemSet.RemoveSelectedItem(targetItem);
}
else
{
SelectedItemSet.AddSelectedItem(targetItem);
}
}
}
}
private void Background_MouseDown(object sender, MouseButtonEventArgs e)
{
SelectedItemSet.UnselectItems();
}