static IEnumerable <TreeNavigator> FindChildNavigators <T> (TreeNavigator navigator, T fieldValue, IDataField <T> field)
{
if (!navigator.MoveToChild())
{
yield break;
}
foreach (var treeNavigator in FindNavigators(fieldValue, field, navigator))
{
yield return(treeNavigator);
}
navigator.MoveToParent();
}
public IEnumerable <TreeNavigator> FindNavigators <T> (T fieldValue, IDataField <T> field)
{
if (fieldValue == null)
{
return(Enumerable.Empty <TreeNavigator> ());
}
TreeNavigator navigator = GetFirstNode();
if (navigator.CurrentPosition == null)
{
return(Enumerable.Empty <TreeNavigator> ());
}
return(FindNavigators(fieldValue, field, navigator));
}
static bool IsNavigator <T> (TreeNavigator navigator, T fieldValue, IDataField <T> field)
{
T value = navigator.GetValue(field);
return(fieldValue.Equals(value));
}
static IEnumerable <TreeNavigator> FindNavigators <T> (T fieldValue, IDataField <T> field, TreeNavigator navigator)
{
do
{
if (IsNavigator(navigator, fieldValue, field))
{
yield return(navigator.Clone());
}
foreach (TreeNavigator foundChild in FindChildNavigators(navigator, fieldValue, field))
{
yield return(foundChild.Clone());
}
} while (navigator.MoveNext());
}