protected override bool IsValidSubType(IHTMLItem item)
{
// may appear only once and only as first element
if (item is TableCaption)
{
if (Subitems.Count > 0)
{
return(false);
}
IHTMLItem seekItem = Subitems.Find(x => x is TableCaption);
if (seekItem != null)
{
return(false);
}
return(item.IsValid());
}
if (item is ColElement)
{
return(item.IsValid());
}
if (item is ColGroup)
{
return(item.IsValid());
}
if (item is TableBody)
{
IHTMLItem seekItem = Subitems.Find(x => x is TableBody);
if (seekItem != null)
{
return(false);
}
seekItem = Subitems.Find(x => x is TableRow);
if (seekItem != null)
{
return(false);
}
return(item.IsValid());
}
if (item is TableRow)
{
IHTMLItem seekItem = Subitems.Find(x => x is TableBody);
if (seekItem != null)
{
return(false);
}
seekItem = Subitems.Find(x => x is TableHead);
if (seekItem != null)
{
return(false);
}
seekItem = Subitems.Find(x => x is TableFooter);
if (seekItem != null)
{
return(false);
}
return(item.IsValid());
}
return(false);
}