private void ExpandNode(TreeListViewNode node, bool expand)
{
if (expand)
{
if ((node.IsExpanded) || (node.Nodes.Count == 0))
{
return;
}
node.Expand();
}
else
{
if (!node.IsExpanded)
{
return;
}
node.Collapse();
}
var top_item_index = 0;
/* 現在のスクロール位置と選択ノードをバックアップ */
if (Items.Count > 0)
{
top_item_index = TopItem.Index;
}
UpdateListView();
TopItem = Items[top_item_index];
}
private Image GetNodeIcon(TreeListViewNode node)
{
if (node.Nodes.Count > 0)
{
return((node.IsExpanded) ? (ICON_TREE_NODE_CONTAINER_EXPAND) : (ICON_TREE_NODE_CONTAINER_COLLAPSE));
}
else
{
return(null);
}
}
private ListViewItem CreateListViewItem(TreeListViewNode node)
{
var item = new ListViewItem();
item.Text = (new string(' ', node.Level)) + node.Text;
item.Tag = node;
for (var value_index = 0;
(value_index < (Columns.Count - 1)) && (value_index < node.Values.Count);
value_index++
)
{
var item_value = node.Values[value_index];
var item_sub = new ListViewItem.ListViewSubItem();
item_sub.Text = item_value.ToString();
item_sub.Tag = item_value;
item.SubItems.Add(item_sub);
}
return(item);
}
private int GetNodeDrawOffset(TreeListViewNode node)
{
return(node.Level * GetNodeLevelOffset());
}
