void nodes_AfterCheck(object sender, ComboTreeNodeEventArgs e)
{
if (_cascadeCheckState)
{
_recurseDepth++;
if (_recurseDepth == 1)
{
IEnumerator <ComboTreeNode> enumerator = ComboTreeNodeCollection.GetNodesRecursive(e.Node.Nodes, false);
while (enumerator.MoveNext())
{
if (_threeState)
{
enumerator.Current.CheckState = e.Node.CheckState;
}
else
{
enumerator.Current.Checked = e.Node.Checked;
}
}
ComboTreeNode parent = e.Node.Parent;
while (parent != null)
{
parent.CheckState = parent.GetAggregateCheckState();
parent = parent.Parent;
}
}
_recurseDepth--;
}
Invalidate();
OnAfterCheck(e);
}
/// <summary>
/// Returns the previous selectable node, relative to the selected node.
/// </summary>
/// <returns></returns>
public ComboTreeNode GetPrevSelectableNode()
{
bool started = false;
IEnumerator <ComboTreeNode> e = ComboTreeNodeCollection.GetNodesRecursive(_nodes, true);
while (e.MoveNext())
{
if (started || (_selectedNode == null))
{
if (IsNodeVisible(e.Current) && e.Current.Selectable)
{
return(e.Current);
}
}
else if (e.Current == _selectedNode)
{
started = true;
}
}
return(null);
}
/// <summary>
/// Returns the next displayable node, relative to the selected node.
/// </summary>
/// <returns></returns>
private ComboTreeNode GetNextDisplayedNode()
{
bool started = false;
IEnumerator <ComboTreeNode> e = ComboTreeNodeCollection.GetNodesRecursive(_nodes, false);
while (e.MoveNext())
{
if (started || (_selectedNode == null))
{
if (IsNodeVisible(e.Current))
{
return(e.Current);
}
}
else if (e.Current == _selectedNode)
{
started = true;
}
}
return(null);
}