private static void SelectPath(TreeView treeView, string value)
{
if (value == null)
{
TreeViewItem item = treeView.SelectedItem as TreeViewItem;
if (item != null)
{
item.IsSelected = false;
}
}
else
{
value = NormalizePath(value);
var paths = SubPaths(value);
FoldersTreeViewItem currentItem = treeView.Items[0] as FoldersTreeViewItem;
bool needSelect = true;
foreach (var path in paths)
{
currentItem.IsExpanded = true;
var childItem = currentItem.Items.OfType<FoldersTreeViewItem>().FirstOrDefault(i => path.Equals((i.Tag as FolderInfo)?.Path, StringComparison.OrdinalIgnoreCase));
if (childItem != null)
{
currentItem = childItem;
}
else
{
needSelect = false;
}
}
if (needSelect)
{
//currentItem.IsExpanded = true;
currentItem.IsSelected = true;
MethodInfo selectMethod = typeof(TreeViewItem).GetMethod("Select", BindingFlags.NonPublic | BindingFlags.Instance);
selectMethod.Invoke(currentItem, new object[] { true });
currentItem.BringIntoView();
//treeView.Focus();
// TODO: notify property changed
}
}
}
private FoldersTreeViewItem CreateItem(FolderInfo folderInfo)
{
var item = new FoldersTreeViewItem();
item.Header = folderInfo.Title;
item.Tag = folderInfo;
item.Expanded += new RoutedEventHandler(folder_Expanded);
if (folderInfo.Path != null)
{
item.Items.Add(null);
}
return item;
}
protected override void OnSelectedItemChanged(RoutedPropertyChangedEventArgs<object> e)
{
base.OnSelectedItemChanged(e);
FoldersTreeViewItem temp = (FoldersTreeViewItem)this.SelectedItem;
if (temp != null)
{
var folderInfo = temp.Tag as FolderInfo;
SelectedPath = folderInfo.Path;
}
}
void folder_Expanded(object sender, RoutedEventArgs e)
{
FoldersTreeViewItem item = (FoldersTreeViewItem)sender;
if (item.Items.Count == 1 && item.Items[0] == null)
{
item.Items.Clear();
try
{
var folderInfo = item.Tag as FolderInfo;
foreach (string s in GetDirectories(folderInfo.Path))
{
item.Items.Add(CreateItem(new FolderInfo() { Title = Path.GetFileName(s), Path = s, Icon = GetIcon(s) }));
}
}
catch (Exception)
{
}
}
}
