public ElementIdentifier RelativeTo(ElementIdentifier baseElement)
{
if (baseElement != null)
{
ElementIdentifier relative = new ElementIdentifier();
Dictionary <string, string> baseAnchorDictionary = baseElement.ToAnchorDictionary();
Dictionary <string, string> targetAnchorDictionary = this.ToAnchorDictionary();
foreach (string baseAnchor in baseAnchorDictionary.Keys)
{
string basePath = baseAnchorDictionary[baseAnchor];
string targetPath;
if (targetAnchorDictionary.TryGetValue(baseAnchor, out targetPath))
{
string[] baseParts = basePath.Split('/');
string[] targetParts = targetPath.Split('/');
string relativePath;
if (baseParts.Length == targetParts.Length)
{
relativePath = ".";
}
else
{
relativePath = String.Join("/", targetParts, baseParts.Length, targetParts.Length - baseParts.Length);
}
relativePath = String.Format("/{0}", relativePath);
relative.Identifiers.Add(relativePath);
//We only need one path here relative to the base because all paths relative to base paths of matching anchors will be the same.
return(relative);
}
}
}
return(null);
}
