public virtual INode InsertBefore(INode newChild, INode refChild)
{
// TODO - handle newChild already in tree
if (newChild == null)
{
return(null);
}
if (!(newChild is DomNodeImpl))
{
throw new DomException(DomException.WrongDocument, "newChild not instanceof DomNodeImpl");
}
DomNodeImpl newCh = (DomNodeImpl)newChild;
if (this.Adaptee.Type == Node.RootNode)
{
if (newCh.Adaptee.Type != Node.DocTypeTag && newCh.Adaptee.Type != Node.ProcInsTag)
{
throw new DomException(DomException.HierarchyRequest, "newChild cannot be a child of this node");
}
}
else if (this.Adaptee.Type == Node.StartTag)
{
if (newCh.Adaptee.Type != Node.StartTag && newCh.Adaptee.Type != Node.StartEndTag && newCh.Adaptee.Type != Node.CommentTag && newCh.Adaptee.Type != Node.TextNode && newCh.Adaptee.Type != Node.CDATATag)
{
throw new DomException(DomException.HierarchyRequest, "newChild cannot be a child of this node");
}
}
if (refChild == null)
{
Node.InsertNodeAtEnd(this.Adaptee, newCh.Adaptee);
if (this.Adaptee.Type == Node.StartEndTag)
{
this.Adaptee.Type = Node.StartTag;
}
}
else
{
Node refNode = this.Adaptee.Content;
while (refNode != null)
{
if (refNode.Adapter == refChild)
{
break;
}
refNode = refNode.Next;
}
if (refNode == null)
{
throw new DomException(DomException.NotFound, "refChild not found");
}
Node.InsertNodeBeforeElement(refNode, newCh.Adaptee);
}
return(newChild);
}
public virtual INode AppendChild(INode newChild)
{
// TODO - handle newChild already in tree
if (newChild == null)
{
return(null);
}
if (!(newChild is DomNodeImpl))
{
throw new DomException(DomException.WrongDocument, "newChild not instanceof DomNodeImpl");
}
DomNodeImpl newCh = (DomNodeImpl)newChild;
if (this.Adaptee.Type == Node.RootNode)
{
if (newCh.Adaptee.Type != Node.DocTypeTag && newCh.Adaptee.Type != Node.ProcInsTag)
{
throw new DomException(DomException.HierarchyRequest, "newChild cannot be a child of this node");
}
}
else if (this.Adaptee.Type == Node.StartTag)
{
if (newCh.Adaptee.Type != Node.StartTag && newCh.Adaptee.Type != Node.StartEndTag && newCh.Adaptee.Type != Node.CommentTag && newCh.Adaptee.Type != Node.TextNode && newCh.Adaptee.Type != Node.CDATATag)
{
throw new DomException(DomException.HierarchyRequest, "newChild cannot be a child of this node");
}
}
Node.InsertNodeAtEnd(Adaptee, newCh.Adaptee);
if (Adaptee.Type == Node.StartEndTag)
{
Adaptee.Type = Node.StartTag;
}
return(newChild);
}
public virtual INode ReplaceChild(INode newChild, INode oldChild)
{
// TODO - handle newChild already in tree
if (newChild == null)
{
return(null);
}
if (!(newChild is DomNodeImpl))
{
throw new DomException(DomException.WrongDocument, "newChild not instanceof DomNodeImpl");
}
DomNodeImpl newCh = (DomNodeImpl)newChild;
if (this.Adaptee.Type == Node.RootNode)
{
if (newCh.Adaptee.Type != Node.DocTypeTag && newCh.Adaptee.Type != Node.ProcInsTag)
{
throw new DomException(DomException.HierarchyRequest, "newChild cannot be a child of this node");
}
}
else if (this.Adaptee.Type == Node.StartTag)
{
if (newCh.Adaptee.Type != Node.StartTag && newCh.Adaptee.Type != Node.StartEndTag && newCh.Adaptee.Type != Node.CommentTag && newCh.Adaptee.Type != Node.TextNode && newCh.Adaptee.Type != Node.CDATATag)
{
throw new DomException(DomException.HierarchyRequest, "newChild cannot be a child of this node");
}
}
if (oldChild == null)
{
throw new DomException(DomException.NotFound, "oldChild not found");
}
else
{
Node n;
Node refNode = this.Adaptee.Content;
while (refNode != null)
{
if (refNode.Adapter == oldChild)
{
break;
}
refNode = refNode.Next;
}
if (refNode == null)
{
throw new DomException(DomException.NotFound, "oldChild not found");
}
newCh.Adaptee.Next = refNode.Next;
newCh.Adaptee.Prev = refNode.Prev;
newCh.Adaptee.Last = refNode.Last;
newCh.Adaptee.Parent = refNode.Parent;
newCh.Adaptee.Content = refNode.Content;
if (refNode.Parent != null)
{
if (refNode.Parent.Content == refNode)
{
refNode.Parent.Content = newCh.Adaptee;
}
if (refNode.Parent.Last == refNode)
{
refNode.Parent.Last = newCh.Adaptee;
}
}
if (refNode.Prev != null)
{
refNode.Prev.Next = newCh.Adaptee;
}
if (refNode.Next != null)
{
refNode.Next.Prev = newCh.Adaptee;
}
for (n = refNode.Content; n != null; n = n.Next)
{
if (n.Parent == refNode)
{
n.Parent = newCh.Adaptee;
}
}
}
return(oldChild);
}