public virtual void AddChild(TListViewItem parentItem, TListViewItem newItem)
{
if (parentItem == newItem)
{
return;
}
if (parentItem == null || !_items.Contains(parentItem))
{
return;
}
if (newItem == null || _items.Contains(newItem) || parentItem._children.Contains(newItem))
{
return;
}
newItem._level = parentItem._level + 1;
newItem._parent = parentItem;
newItem._controler = this;
parentItem._children.Add(newItem);
_items.Add(newItem);
parentItem.Refresh();
if (parentItem.IsExpanded())
{
parentItem.Collaps();
parentItem.Expand();
}
}
private void _listView_DoubleClick(object sender, EventArgs e)
{
if (_listView.SelectedItems.Count < 1)
{
return;
}
TListViewItem item = _listView.SelectedItems[0] as TListViewItem;
if (item == null)
{
return;
}
if (item.IsExpanded())
{
item.Collaps();
}
else
{
item.Expand();
}
}
public virtual void Remove(TListViewItem currentItem)
{
if (currentItem == null || !_items.Contains(currentItem))
{
return;
}
bool visible = currentItem._visible;
currentItem._visible = false;
if (currentItem.HasChildren())
{
currentItem.Collaps();
foreach (TListViewItem child in currentItem.Children)
{
Remove(child);
}
}
TListViewItem parent = currentItem._parent;
if (parent != null)
{
parent._children.Remove(currentItem);
if (parent._children.Count < 1)
{
parent.Refresh();
}
}
if (visible)
{
_listView.Items.Remove(currentItem);
}
_items.Remove(currentItem);
}