private IResource SearchEnumerator(bool forward, JetListViewNode node, JetListViewNode stopNode,
LocateMatchCallback callback, bool skipFirst)
{
IEnumerator enumerator = forward? EnumerateItemsForward(node) : EnumerateItemsBackward(node);
if (skipFirst)
{
enumerator.MoveNext();
}
while (enumerator.MoveNext())
{
JetListViewNode childNode = (JetListViewNode)enumerator.Current;
if (childNode == stopNode)
{
return(null);
}
IResource childResource = (IResource)childNode.Data;
if (callback(childResource))
{
return(childResource);
}
}
return(null);
}
private IResource LocateNextResourceInDirection(bool isForward, IResource start, LocateMatchCallback callback,
bool skipFirst, bool searchBackAlso)
{
IResource result = null;
JetListViewNode node = NodeFromItem(start);
if (node != null)
{
lock (JetListView.NodeCollection)
{
result = SearchEnumerator(isForward, node, null, callback, skipFirst);
if (result == null && searchBackAlso)
{
result = SearchEnumerator(isForward, null, node, callback, false);
}
}
}
return(result);
}
public IResource LocatePrevResource(IResource startResource, LocateMatchCallback callback,
bool skipFirst, bool searchBackAlso)
{
return(LocateNextResourceInDirection(false, startResource, callback, skipFirst, searchBackAlso));
}
