/// <summary>
/// This will insert a node at the given position
/// </summary>
/// <param name="index">The position at which to insert the node.</param>
/// <param name="node">The node to insert.</param>
public void Insert(int index,HtmlNode node)
{
if( mParent != null ) node.SetParent( mParent );
base.InnerList.Insert( index , node );
}
/// <summary>
/// This is used to identify the index of this node as it appears in the collection.
/// </summary>
/// <param name="node">The node to test</param>
/// <returns>The index of the node, or -1 if it is not in this collection</returns>
public int IndexOf(HtmlNode node)
{
return base.List.IndexOf( node );
}
/// <summary>
/// This will add a node to the collection.
/// </summary>
/// <param name="node"></param>
/// <returns></returns>
public int Add(HtmlNode node)
{
if( mParent != null ) node.SetParent( mParent );
return base.List.Add( node );
}
public HtmlNode GetCommonAncestor(HtmlNode node)
{
HtmlNode thisParent = this;
while( thisParent != null )
{
HtmlNode thatParent = node;
while( thatParent != null )
{
if( thisParent == thatParent )
{
return thisParent;
}
thatParent = thatParent.Parent;
}
thisParent = thisParent.Parent;
}
return null;
}
public bool IsAncestorOf(HtmlNode node)
{
return node.IsDescendentOf( this );
}
public bool IsDescendentOf(HtmlNode node)
{
HtmlNode parent = mParent;
while( parent != null )
{
if( parent == node )
{
return true;
}
parent = parent.Parent;
}
return false;
}
