/// <summary>
/// Runs the mutation macro as defined in 5.2.2 Mutation methods
/// of http://www.w3.org/TR/domcore/.
/// </summary>
/// <param name="nodes">The nodes array to add.</param>
/// <returns>A (single) node.</returns>
public static INode MutationMacro(this INode[] nodes)
{
if (nodes.Length > 1)
{
var node = new DocumentFragment();
for (int i = 0; i < nodes.Length; i++)
{
node.AppendChild(nodes[i]);
}
return(node);
}
return(nodes[0]);
}
public IDocumentFragment CopyContent()
{
var fragment = new DocumentFragment {
Owner = _start.Node.Owner as Document
};
if (_start.Equals(_end))
{
return(fragment);
}
var originalStart = _start;
var originalEnd = _end;
if (originalStart.Node == originalEnd.Node && _start.Node is ICharacterData)
{
var text = (ICharacterData)originalStart.Node;
var strt = originalStart.Offset;
var span = originalEnd.Offset - originalStart.Offset;
var clone = (ICharacterData)text.Clone();
clone.Data = text.Substring(strt, span);
fragment.AppendChild(clone);
return(fragment);
}
var commonAncestor = originalStart.Node;
while (!commonAncestor.IsInclusiveAncestorOf(originalEnd.Node))
{
commonAncestor = commonAncestor.Parent;
}
var firstPartiallyContainedChild = !originalStart.Node.IsInclusiveAncestorOf(originalEnd.Node) ?
commonAncestor.GetElements <INode>(predicate: IsPartiallyContained).FirstOrDefault() : null;
var lastPartiallyContainedchild = !originalEnd.Node.IsInclusiveAncestorOf(originalStart.Node) ?
commonAncestor.GetElements <INode>(predicate: IsPartiallyContained).LastOrDefault() : null;
var containedChildren = commonAncestor.GetElements <INode>(predicate: Intersects).ToList();
if (containedChildren.OfType <IDocumentType>().Any())
{
throw new DomException(ErrorCode.HierarchyRequest);
}
if (firstPartiallyContainedChild is ICharacterData)
{
var text = (ICharacterData)originalStart.Node;
var strt = originalStart.Offset;
var span = text.Length - originalStart.Offset;
var clone = (ICharacterData)text.Clone();
clone.Data = text.Substring(strt, span);
fragment.AppendChild(clone);
}
else if (firstPartiallyContainedChild != null)
{
var clone = firstPartiallyContainedChild.Clone();
fragment.AppendChild(clone);
var subrange = new Range(originalStart, new Boundary {
Node = firstPartiallyContainedChild, Offset = firstPartiallyContainedChild.ChildNodes.Length
});
var subfragment = subrange.CopyContent();
fragment.AppendChild(subfragment);
}
foreach (var child in containedChildren)
{
fragment.AppendChild(child.Clone());
}
if (lastPartiallyContainedchild is ICharacterData)
{
var text = (ICharacterData)originalEnd.Node;
var clone = (ICharacterData)text.Clone();
clone.Data = text.Substring(0, originalEnd.Offset);
fragment.AppendChild(clone);
}
else if (lastPartiallyContainedchild != null)
{
var clone = lastPartiallyContainedchild.Clone();
fragment.AppendChild(clone);
var subrange = new Range(new Boundary {
Node = lastPartiallyContainedchild, Offset = 0
}, originalEnd);
var subfragment = subrange.CopyContent();
fragment.AppendChild(subfragment);
}
return(fragment);
}
