public override bool IsAtBookmark(Bookmark bookmark)
{
if (bookmark.data == null)
return OrdinalPosition == null;
var elem = bookmark.data as ElementDefinition;
return this.Current == elem;
}
public override bool ReturnToBookmark(Bookmark bookmark)
{
if (bookmark.data == null)
{
OrdinalPosition = null;
return true;
}
else
{
var elem = bookmark.data as ElementDefinition;
if (elem == null) return false;
var index = Elements.IndexOf(elem);
if (index != -1)
{
OrdinalPosition = index;
return true;
}
else
return false;
}
}
public bool DuplicateAfter(Bookmark target)
{
if (OrdinalPosition == null) return false;
var start = OrdinalPosition.Value;
var end = positionAfter();
if (!ReturnToBookmark(target)) return false;
var dest = positionAfter();
var source = Elements.Skip(start).Take(end-start).ToList();
foreach (var elem in source.Reverse<ElementDefinition>())
Elements.Insert(dest, (ElementDefinition)elem.DeepCopy());
OrdinalPosition = dest;
return true;
}
public abstract bool ReturnToBookmark(Bookmark bookmark);
public abstract bool IsAtBookmark(Bookmark bookmark);
public abstract bool ReturnToBookmark(Bookmark bookmark);
public abstract bool IsAtBookmark(Bookmark bookmark);
