public IFileSystemNode GetChild(string path)
{
var parts = IoHelpers.SplitPath(path);
if (children != null && children.TryGetValue(parts[0], out var child))
{
if (parts.Length == 1)
{
return(child);
}
return(child.GetChild(parts[1]));
}
return(null);
}
internal FileSystemNode GetOrCreateChild([NotNull] string path)
{
var parts = IoHelpers.SplitPath(path);
children = children ?? new ConcurrentDictionary <string, FileSystemNode>();
var child = children.GetOrAdd(parts[0], v => new FileSystemNode()
{
name = v,
parent = this
});
if (parts.Length == 1)
{
return(child);
}
return(child.GetOrCreateChild(parts[1]));
}
public TreeGridNodeViewModel GetChild(string path)
{
IsExpanded = true;
var parts = IoHelpers.SplitPath(path);
var child = Children?.Cast <TreeGridNodeViewModel>().FirstOrDefault(n => n.Name == parts[0]);
if (child != null)
{
if (parts.Length == 1)
{
return(child);
}
return(child.GetChild(parts[1]));
}
return(null);
}
private void ListViewItem_PreviewMouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
var listViewItem = sender as ListViewItem;
if (listViewItem == null)
{
return;
}
var topItem = listViewItem.Content as StatisticsItem;
if (topItem == null)
{
return;
}
var fileNode = ((TreeGridNodeViewModel)TreeGrid.Root).GetChild(IoHelpers.SplitPath(topItem.Path)[1]);
if (fileNode == null)
{
return;
}
var item = TreeGrid.ItemContainerGenerator.ContainerFromItem(fileNode) as ListViewItem;
if (item == null)
{
return;
}
TreeGrid.SelectedItems.Clear();
TreeGrid.Focus();
item.Focus();
item.IsSelected = true;
Keyboard.Focus(item);
TreeGrid.ScrollIntoView(item);
}
internal void InsertNode([NotNull] string path, [NotNull] FileSystemNode node)
{
var parts = IoHelpers.SplitPath(path);
if (parts.Length != 2)
{
return;
}
var parentNode = GetOrCreateChild(parts[0]);
node.name = parts[1];
node.parent = parentNode;
parentNode.children.TryAdd(parts[1], node);
var t = parentNode;
while (t != null)
{
t.UpdateCounters(node.Size, node.CountDirectories, CountFiles);
t = t.parent;
}
}
internal FileSystemNode RemoveNode([NotNull] string path)
{
var parts = IoHelpers.SplitPath(path);
if (children != null && children.TryGetValue(parts[0], out var child))
{
if (parts.Length == 1)
{
children.TryRemove(parts[0], out child);
child.parent = null;
return(child);
}
var deletedNode = child.RemoveNode(parts[1]);
if (deletedNode != null)
{
UpdateCounters(-deletedNode.Size, -deletedNode.CountDirectories, -deletedNode.CountFiles);
return(deletedNode);
}
}
return(null);
}
