static private void OnMenuOpening(object sender, CancelEventArgs e)
{
ContextMenuStrip menu = sender as ContextMenuStrip;
MenuContext menuContext = menu.Tag as MenuContext;
List <MySQL.Base.MenuItem> itemsBE = null;
menuContext.nodes = null;
menuContext.rows = null;
menuContext.column = -1;
if (null != menuContext.GetSelectedNodes)
{
menuContext.nodes = menuContext.GetSelectedNodes();
if (null == menuContext.nodes)
{
menuContext.nodes = new List <NodeIdWrapper>();
}
itemsBE = menuContext.GetNodesMenuItems(menuContext.nodes);
}
else if (null != menuContext.GetSelectedRowsCol)
{
menuContext.rows = menuContext.GetSelectedRowsCol(ref menuContext.column);
if (null == menuContext.rows)
{
menuContext.rows = new List <int>();
}
itemsBE = menuContext.GetRowsColMenuItems(menuContext.rows, menuContext.column);
}
menu.Items.Clear();
if (null == itemsBE)
{
e.Cancel = true;
}
else
{
FillMenuItems(itemsBE, menu.Items);
e.Cancel = false;
}
}