/// <summary>
/// Function to add a directory to the tree.
/// </summary>
/// <param name="nodes">Source collection.</param>
/// <param name="directory">Directory to add.</param>
/// <param name="autoExpand">TRUE to expand the new node (if it has children) after it's been added, FALSE to leave collapsed.</param>
/// <returns>The new node.</returns>
public static TreeNodeDirectory AddDirectory(this TreeNodeCollection nodes, GorgonFileSystemDirectory directory, bool autoExpand)
{
if (directory == null)
{
throw new ArgumentNullException("directory");
}
// Find check to ensure the node is unique.
TreeNodeDirectory result = (from node in nodes.Cast <TreeNode>()
let dirNode = node as TreeNodeDirectory
where dirNode != null &&
string.Equals(node.Name, directory.FullPath, StringComparison.OrdinalIgnoreCase)
select dirNode).FirstOrDefault();
if (result != null)
{
return(result);
}
result = new TreeNodeDirectory(directory)
{
ForeColor = Color.White,
Text = directory.Name
};
if ((directory.Directories.Count > 0) || (directory.Files.Count > 0))
{
// Add a dummy node to indicate that there are children.
result.Nodes.Add("DummyNode");
}
nodes.Add(result);
// Expand the parent.
if ((result.Parent != null) &&
(!result.Parent.IsExpanded))
{
TreeNode parent = result.Parent;
parent.Expand();
result = (TreeNodeDirectory)parent.Nodes[result.Name];
}
// Expand the node if necessary.
if ((autoExpand) &&
(result.Nodes.Count > 0))
{
result.Expand();
}
return(result);
}
/// <summary>
/// Initializes a new instance of the <see cref="DragDirectory"/> class.
/// </summary>
/// <param name="directoryNode">The directory node.</param>
/// <param name="mouseButton">The mouse button used to drag.</param>
public DragDirectory(TreeNodeDirectory directoryNode, MouseButtons mouseButton)
: base(mouseButton)
{
DirectoryNode = directoryNode;
}
