int VarTree::getIndex( const Iterator& item )
{
int index = 0;
Iterator it;
for( it = m_flat ? firstLeaf() : m_children.begin();
it != m_children.end();
it = m_flat ? getNextLeaf( it ) : getNextVisibleItem( it ) )
{
if( it == item )
break;
index++;
}
return (it == item) ? index : -1;
}
// iterating all nodes
inline Ref<Node> first() const { return firstLeaf(); }
/// Beginning of the children's list
IteratorVisible begin()
{
return IteratorVisible(
m_flat ? firstLeaf() : m_children.begin(), this );
}
