/// <summary>
///
/// </summary>
/// <param name="nod"></param>
private void InitializeNode(FileTreeNode node)
{
DirectoryInfo directory = node.FileSystemInfo as DirectoryInfo;
try
{
// Filter - Only Directories
List <FileSystemInfo> files =
FileMask.IncludeAttributes(directory.GetFileSystemInfos(), FileAttributes.Directory);
BeginUpdate();
node.Nodes.Clear();
// create new nodes for each sub node
int len = files.Count;
for (int i = 0; i < len; ++i)
{
string name = files[i].Name;
FileSystemInfo fi = (FileSystemInfo)files[i];
FileTreeNode child = new FileTreeNode(name, name, fi, 0, 1);
node.Nodes.Add(child);
}
//Sort();
EndUpdate();
//node.Expand();
}
catch (UnauthorizedAccessException)
{
//MessageBox.Show( "Can not access " + directory.FullName );
//node.ImageIndex = 8;
//node.SelectedImageIndex = 8;
//// goto parent node
//SelectedNode = SelectedNode.Parent;
return;
}
}
/// <summary>
/// allow control to prepare to be updated
/// </summary>
/// <param name="drives"></param>
/// <param name="files"></param>
public void RefreshTree(FileTreeNode node)
{
DateTime dt = node.FileSystemInfo.LastWriteTime;
node.FileSystemInfo.Refresh();
if (dt != node.FileSystemInfo.LastWriteTime)
{
InitializeNode(node);
}
}
//todo
//protected override void OnBeforeExpand( TreeViewCancelEventArgs e )
//{
// base.OnBeforeExpand( e );
// change the focus
// FileTreeNode node = (FileTreeNode)e.Node;
// if(CanReadFile( node.FileSystemInfo ))
// {
// foreach(FileTreeNode n in node.Nodes)
// {
// Debug.WriteLine( n.Name );
// if(!n.Intialized)
// InitializeNode( n );
// else
// this.RefreshTree( n );
// }
// }
//}
/// <summary>
/// creates all sub nodes "only" before being selected
/// </summary>
/// <param name="e"></param>
protected void Node_AfterSelect(object sender, TreeViewEventArgs e)
{
// change the focus
FileTreeNode node = (FileTreeNode)e.Node;
if (CanReadFile(node.FileSystemInfo))
{
if (!node.Intialized)
{
InitializeNode(node);
}
else
{
this.RefreshTree(node);
}
}
}
/// <summary>
///
/// </summary>
/// <param name="path"></param>
public void Open(string path)
{
if (!string.IsNullOrEmpty(path))
{
string[] dirs = path.Split(Path.DirectorySeparatorChar);
TreeNodeCollection cur_nodes = this.Nodes;
foreach (string dir in dirs)
{
TreeNode[] nodes = cur_nodes.Find(dir, false);
if (nodes.Length == 1)
{
FileTreeNode node = (FileTreeNode)nodes[0];
if (!node.Intialized)
{
InitializeNode(node);
}
this.SelectedNode = node;
this.SelectedNode.Expand();
cur_nodes = this.SelectedNode.Nodes;
}
}
}
}
