public IVisibleNodeEnumerator GetDirectionalEnumerator(IViewNode startNode, MoveDirection direction)
{
Guard.NullArgument(startNode, "startNode");
JetListViewNode startLvNode = startNode as JetListViewNode;
if (startLvNode != null)
{
return(new GroupedItemEnumerator(this,
_nodeCollection.GetDirectionalEnumerator(startLvNode, direction), direction,
(direction == MoveDirection.Down)));
}
GroupHeaderNode startHeaderNode = startNode as GroupHeaderNode;
Debug.Assert(startHeaderNode.TopNode != null);
if (startHeaderNode.TopNode == null)
{
return(new GroupedItemEnumerator(this, new EmptyEnumerator(), direction, false));
}
GroupedItemEnumerator enumerator = new GroupedItemEnumerator(this,
_nodeCollection.GetDirectionalEnumerator(startHeaderNode.TopNode, direction),
direction, false);
if (direction == MoveDirection.Up)
{
// move from first node of current group to last node of previous group
enumerator.MoveNext();
}
return(enumerator);
}
public bool IncrementalSearchNext(string text, MoveDirection dir)
{
JetListViewNode curNode = _selection.ActiveNode;
IEnumerator enumerator = (dir == MoveDirection.Down)
? _nodeCollection.EnumerateNodesForward(curNode)
: _nodeCollection.EnumerateNodesBackward(curNode);
enumerator.MoveNext();
if (SearchEnumerator(text, enumerator, null))
{
return(true);
}
JetListViewNode startNode = (dir == MoveDirection.Down)
? _nodeCollection.Nodes [0]
: _nodeCollection.LastNode;
if (curNode == startNode)
{
return(false);
}
enumerator = _nodeCollection.GetDirectionalEnumerator(startNode, dir);
return(SearchEnumerator(text, enumerator, curNode));
}
