public void appendChild(Node node)
{
if(node==this)
throw new ArgumentException();
node.parentNode=this;
node.ownerDocument=(this is IDocument) ? (IDocument)this : ownerDocument;
childNodes.Add(node);
}
private Text getTextNodeToInsert(Node node)
{
IList<Node> childNodes=node.getChildNodesInternal();
Node lastChild=(childNodes.Count==0) ? null : childNodes[childNodes.Count-1];
if(lastChild==null || lastChild.getNodeType()!=NodeType.TEXT_NODE){
Text textNode=new Text();
node.appendChild(textNode);
return textNode;
} else
return ((Text)lastChild);
}
public void removeChild(Node node)
{
node.parentNode=null;
childNodes.Remove(node);
}
public void insertBefore(Node child, Node sibling)
{
if(sibling==null){
appendChild(child);
return;
}
if(childNodes.Count==0)
throw new InvalidOperationException();
int childNodesSize=childNodes.Count;
for(int j=0;j<childNodesSize;j++){
if(childNodes[j].Equals(sibling)){
child.parentNode=this;
child.ownerDocument=(child is IDocument) ? (IDocument)this : ownerDocument;
childNodes.Insert(j,child);
return;
}
}
throw new ArgumentException();
}
