Ejemplo n.º 1
0
 public void ExpandBase()
 {
     if (_rootExists)
     {
         _treeView.ExpandRow(_treeRoot.CurrentPosition, false);
     }
 }
Ejemplo n.º 2
0
        void Load(List <NodeInfo> info, TreePosition it)
        {
            bool oneSelected = false;
            var  infoCopy    = new List <NodeInfo> (info);
            Dictionary <NodeInfo, TreePosition> nodes = new Dictionary <NodeInfo, TreePosition> ();

            int num = tree.DataSource.GetChildrenCount(it);

            for (int n = 0; n < num; n++)
            {
                var      child = tree.DataSource.GetChild(it, n);
                object   id    = tree.DataSource.GetValue(child, idColumn);
                NodeInfo ni    = ExtractNodeInfo(info, id);
                if (ni != null)
                {
                    nodes [ni] = child;
                    if (ni.Expanded)
                    {
                        tree.ExpandRow(child, false);
                    }
                    else
                    {
                        tree.CollapseRow(child);
                    }

                    if (ni.Selected)
                    {
                        oneSelected = true;
                        tree.SelectRow(child);
                    }
                    else
                    {
                        tree.UnselectRow(child);
                    }

                    if (ni.ChildInfo != null)
                    {
                        Load(ni.ChildInfo, child);
                    }
                }
            }

            // If this tree level had a selected node and this node has been deleted, then
            // try to select and adjacent node
            if (!oneSelected)
            {
                // 'info' contains the nodes that have not been inserted
                if (info.Any(n => n.Selected))
                {
                    NodeInfo an = FindAdjacentNode(infoCopy, nodes, info[0]);
                    if (an != null)
                    {
                        it = nodes [an];
                        tree.SelectRow(it);
                    }
                }
            }
        }