private void TreeView_DragItemsStarting(MUXC.TreeView sender, MUXC.TreeViewDragItemsStartingEventArgs args)
{
foreach (TreeViewData item in args.Items)
{
DraggedItems.Add(item);
}
}
private async void TreeView_Expanding(winui.TreeView sender, winui.TreeViewExpandingEventArgs args)
{
if (!args.Node.HasUnrealizedChildren)
{
return;
}
sender.IsEnabled = false;
try
{
if (args.Item is ViewModels.FileItemViewModel vm)
{
if (vm.Children is null)
{
await vm.UpdateChildren();
}
args.Node.Children.Clear();
foreach (var item in vm.Folders)
{
args.Node.Children.Add(new winui.TreeViewNode()
{
IsExpanded = false,
Content = item,
HasUnrealizedChildren = item.IsFolder,
});
}
}
}
finally
{
args.Node.HasUnrealizedChildren = false;
sender.IsEnabled = true;
}
}
private void TreeViewItem_Invoked(WinUI.TreeView sender, WinUI.TreeViewItemInvokedEventArgs args)
{
ItemInvokedWithThisClick = true;
SelectedItem = args.InvokedItem as FolderItem;
var cont = treeView.ContainerFromItem(SelectedItem);
SelectedNode = treeView.NodeFromContainer(cont);
}
private async void Tree_Expanding(MUXC.TreeView sender, MUXC.TreeViewExpandingEventArgs args)
{
if (args.Item is ListWrapper listWrapper && listWrapper.HasUnrealizedChildren)
{
listWrapper.TokenSource = new CancellationTokenSource();
listWrapper.Expanded = true;
await FillItem(listWrapper);
}
}
private void TreeView_DragItemsCompleted(MUXC.TreeView sender, MUXC.TreeViewDragItemsCompletedEventArgs args)
{
foreach (TreeViewData item in args.Items)
{
item.Parent = args.NewParent as TreeViewData;
}
DraggedItems.Clear();
}
private void Tree_Collapsed(MUXC.TreeView sender, MUXC.TreeViewCollapsedEventArgs args)
{
if (args.Node is CancellableTreeViewNode ctvn)
{
ctvn.TokenSource.Cancel();
ctvn.IsExpanded = false;
}
args.Node.Children.Clear();
args.Node.HasUnrealizedChildren = true;
}
private void Tree_Collapsed(MUXC.TreeView sender, MUXC.TreeViewCollapsedEventArgs args)
{
if (args.Item is ListWrapper listWrapper)
{
listWrapper.TokenSource.Cancel();
listWrapper.Expanded = false;
listWrapper.Children.Clear();
listWrapper.HasUnrealizedChildren = true;
}
}
private async void Treeview_ItemInvoked(winui.TreeView sender, winui.TreeViewItemInvokedEventArgs args)
{
if (args.InvokedItem is winui.TreeViewNode tvn && tvn.Content is ViewModels.FileItemViewModel vm)
{
await content.SetFolder(vm);
if (tvn.IsExpanded == false)
{
tvn.IsExpanded = true;
}
}
}
private async void Tree_Expanding(MUXC.TreeView sender, MUXC.TreeViewExpandingEventArgs args)
{
if (args.Node.HasUnrealizedChildren)
{
if (args.Node is CancellableTreeViewNode ctvn)
{
ctvn.TokenSource = new CancellationTokenSource();
ctvn.IsExpanded = true;
}
await FillNode(args.Node);
}
}
private async void CategoriesTree_ItemInvoked(muxc.TreeView sender, muxc.TreeViewItemInvokedEventArgs e)
{
muxc.TreeViewNode selected = (muxc.TreeViewNode)e.InvokedItem;
if (selected.Content.GetType() == typeof(SearchableTreeNode))
{
SamplePageContainer.Visibility = Visibility.Collapsed;
SampleSelectionGrid.Visibility = Visibility.Visible;
List <SampleInfo> samples = selected.Children.ToList().Select(x => (SampleInfo)x.Content).ToList();
SamplesGridView.ItemsSource = samples;
}
else if (selected.Content.GetType() == typeof(SampleInfo))
{
await SelectSample((SampleInfo)selected.Content);
}
}
public Control_Files(TreeView _tree, BreadcrumbBar _bar)
{
m_tree = _tree;
m_breadcrumbar = _bar;
m_control.PopulateTreeView(
m_tree,
m_control.GetRelativePaths(
Directory.GetFiles(
Directory.GetCurrentDirectory()
+ "\\Assets"),
Directory.GetCurrentDirectory())
, '\\');
m_breadcrumbar.ItemsSource = Directory.GetFiles(
Directory.GetCurrentDirectory()
+ "\\Assets");
}
private async Task InitializeTreeView()
{
if (Combo.SelectedItem == null)
{
return;
}
if (Tree != null)
{
Tree.Expanding -= Tree_Expanding;
Tree.Collapsed -= Tree_Collapsed;
Tree.RootNodes.Clear();
}
DataStorage.Singleton.resetContents();
Tree = new MUXC.TreeView();
object resource;
this.Resources.TryGetValue("Selector", out resource);
if (resource is ContentModeItemTemplateSelector selector)
{
Tree.ItemTemplateSelector = selector;
}
else
{
Debug.WriteLine("Selector is no ContentModeItemTemplateSelector!");
}
Tree.Expanding += Tree_Expanding;
Tree.Collapsed += Tree_Collapsed;
Tree.SelectionMode = MUXC.TreeViewSelectionMode.Single;
Tree.IsDoubleTapEnabled = false;
Tree.AllowDrop = true;
Tree.CanDragItems = false;
Tree.CanReorderItems = true;
Tree.ItemsSource = new ObservableCollection <WrapperBase>();
WrapViewer.Content = Tree;
this.rootCts = new CancellationTokenSource();
this.rootToken = rootCts.Token;
await FillNodeListWithData((ObservableCollection <WrapperBase>) Tree.ItemsSource, this.ComboBoxSelected, rootCts.Token);
}
private async void TreeView_Expanding(Microsoft.UI.Xaml.Controls.TreeView sender, Microsoft.UI.Xaml.Controls.TreeViewExpandingEventArgs args)
{
if (!args.Node.HasUnrealizedChildren)
{
return;
}
sender.IsEnabled = false;
try
{
if (args.Item is ViewModels.IBookmarkItem vm)
{
var container = sender.ContainerFromItem(args.Item);
if (!vm.IsFolder)
{
return;
}
var child = (await vm.GetChilderenAsync())?.Where(a => a.IsFolder && !a.IsReadOnly);
if (child is null)
{
return;
}
if (container is Microsoft.UI.Xaml.Controls.TreeViewItem tvi)
{
tvi.ItemsSource = child;
}
}
}
finally
{
args.Node.HasUnrealizedChildren = false;
sender.IsEnabled = true;
}
}
private void OnItemInvoked(WinUI.TreeView sender, WinUI.TreeViewItemInvokedEventArgs args) => SelectedItem = args.InvokedItem;
private void UnrealizedTreeViewSelection_Expanding(Microsoft.UI.Xaml.Controls.TreeView sender, Microsoft.UI.Xaml.Controls.TreeViewExpandingEventArgs args)
{
VirtualizingDataSource.FillTreeNode(args.Node);
}
private void OnItemInvoked(Microsoft.UI.Xaml.Controls.TreeView sender, Microsoft.UI.Xaml.Controls.TreeViewItemInvokedEventArgs args)
{
StatusTextBlock.Text = $"{DateTime.UtcNow.ToLongTimeString()}: {(args.InvokedItem as Microsoft.UI.Xaml.Controls.TreeViewNode)?.Content}";
}
private void UnrealizedTreeViewSelection_Collapsed(Microsoft.UI.Xaml.Controls.TreeView sender, Microsoft.UI.Xaml.Controls.TreeViewCollapsedEventArgs args)
{
VirtualizingDataSource.EmptyTreeNode(args.Node);
}
private void sampleTreeView_ItemInvoked(mux.TreeView sender, mux.TreeViewItemInvokedEventArgs args)
{
return;
}
// 选中书，列出所有卷的详细列表；
// 选中卷，列出所有子卷或章的详细列表；
// 选中章，加载章节内容。
private void Outline_ItemInvoked(MUXC.TreeView sender, MUXC.TreeViewItemInvokedEventArgs args)
{
SetButtonStatus(true);
m_current = args.InvokedItem as ItemDetailViewModel;
Details.ItemsSource = m_current.Children;
}
