private void SelectAllFromStart(TreeNodeAdv node)
{
Tree.ClearSelection();
int a = node.Row;
int b = Tree.SelectionStart.Row;
for (int i = Math.Min(a, b); i <= Math.Max(a, b); i++)
{
if (Tree.SelectionMode == TreeSelectionMode.Multi || Tree.RowMap[i].Parent == node.Parent)
Tree.RowMap[i].IsSelected = true;
}
}
protected override void FocusRow(TreeNodeAdv node)
{
Tree.SuspendSelectionEvent = true;
try
{
if (Tree.SelectionMode == TreeSelectionMode.Single || Tree.SelectionStart == null)
base.FocusRow(node);
else if (CanSelect(node))
{
SelectAllFromStart(node);
Tree.CurrentNode = node;
Tree.ScrollTo(node);
}
}
finally
{
Tree.SuspendSelectionEvent = false;
}
}
public TreeViewAdvCancelEventArgs(TreeNodeAdv node)
: base(node)
{
}
protected virtual void FocusRow(TreeNodeAdv node)
{
Tree.SuspendSelectionEvent = true;
try
{
Tree.ClearSelection();
Tree.CurrentNode = node;
Tree.SelectionStart = node;
node.IsSelected = true;
Tree.ScrollTo(node);
}
finally
{
Tree.SuspendSelectionEvent = false;
}
}
protected bool CanSelect(TreeNodeAdv node)
{
if (Tree.SelectionMode == TreeSelectionMode.MultiSameParent)
{
return (Tree.SelectionStart == null || node.Parent == Tree.SelectionStart.Parent);
}
else
return true;
}
public TreeViewAdvEventArgs(TreeNodeAdv node)
{
_node = node;
}