public static async Task UpdateAllSubNodeAsync(this TreeViewNode Node)
{
if (Node == null)
{
throw new ArgumentNullException(nameof(Node), "Node could not be null");
}
if (Node.Children.Count > 0)
{
List <string> FolderList = WIN_Native_API.GetStorageItemsAndReturnPath((Node.Content as TreeViewNodeContent).Path, SettingControl.IsDisplayHiddenItem, ItemFilters.Folder);
List <string> PathList = Node.Children.Select((Item) => (Item.Content as TreeViewNodeContent).Path).ToList();
List <string> AddList = FolderList.Except(PathList).ToList();
List <string> RemoveList = PathList.Except(FolderList).ToList();
foreach (string AddPath in AddList)
{
await CoreApplication.MainView.CoreWindow.Dispatcher.RunAsync(CoreDispatcherPriority.Low, () =>
{
Node.Children.Add(new TreeViewNode
{
Content = new TreeViewNodeContent(AddPath),
HasUnrealizedChildren = WIN_Native_API.CheckContainsAnyItem(AddPath, ItemFilters.Folder),
IsExpanded = false
});
});
}
foreach (string RemovePath in RemoveList)
{
await CoreApplication.MainView.CoreWindow.Dispatcher.RunAsync(CoreDispatcherPriority.Low, () =>
{
if (Node.Children.Where((Item) => Item.Content is TreeViewNodeContent).FirstOrDefault((Item) => (Item.Content as TreeViewNodeContent).Path.Equals(RemovePath, StringComparison.OrdinalIgnoreCase)) is TreeViewNode RemoveNode)
{
Node.Children.Remove(RemoveNode);
}
});
}
foreach (TreeViewNode SubNode in Node.Children)
{
await SubNode.UpdateAllSubNodeAsync().ConfigureAwait(true);
}
}
else
{
Node.HasUnrealizedChildren = WIN_Native_API.CheckContainsAnyItem((Node.Content as TreeViewNodeContent).Path, ItemFilters.Folder);
}
}
public async Task <bool> CheckContainsAnyItemAsync(bool IncludeHiddenItem = false, bool IncludeSystemItem = false, ItemFilters Filter = ItemFilters.File | ItemFilters.Folder)
{
if (WIN_Native_API.CheckLocationAvailability(Path))
{
return(await Task.Run(() =>
{
return WIN_Native_API.CheckContainsAnyItem(Path, IncludeHiddenItem, IncludeSystemItem, Filter);
}));
}
else
{
LogTracer.Log($"Native API could not found the path: \"{Path}\", fall back to UWP storage API");
try
{
if (await GetStorageItemAsync() is StorageFolder Folder)
{
if (Filter.HasFlag(ItemFilters.File))
{
return((await Folder.GetFilesAsync(CommonFileQuery.DefaultQuery, 0, 1)).Any());
}
if (Filter.HasFlag(ItemFilters.Folder))
{
return((await Folder.GetFoldersAsync(CommonFolderQuery.DefaultQuery, 0, 1)).Any());
}
}
return(false);
}
catch (Exception ex)
{
LogTracer.Log(ex, $"{nameof(CheckContainsAnyItemAsync)} failed for uwp API");
return(false);
}
}
}