doc: 更新文档

Author: ArgoZhang

src/BootstrapBlazor.Server/Components/Samples/TreeViews.razor

@@ -56,8 +56,8 @@
            Introduction="@Localizer["TreeViewDraggableIntro"]"
            Name="TreeDraggable">
     <section ignore>@((MarkupString)Localizer["TreeViewDraggableDescription"].Value)</section>
-    <TreeView Items="@DraggableItems" ItemDraggable="true" OnTreeItemClick="@OnTreeItemClick" ShowToolbar="true"
-              OnDrop="OnDrop">
+    <TreeView Items="@DraggableItems" OnTreeItemClick="@OnTreeItemClick" ShowToolbar="true"
+              AllowDrag="true" OnDragItemEndAsync="OnDragItemEndAsync">
     </TreeView>
 </DemoBlock>
 

src/BootstrapBlazor.Server/Components/Samples/TreeViews.razor.cs

@@ -85,24 +85,25 @@ private Task OnTreeItemClick(TreeViewItem<TreeFoo> item)
         return Task.CompletedTask;
     }
 
-    private static Task<bool> OnDrop(TreeDropEventArgs<TreeFoo> arg)
+    private static Task OnDragItemEndAsync(TreeViewItem<TreeFoo> item)
     {
         // 如果拖拽到 Id=2 的节点下则不允许
-        if (arg.Target.Value.Id == "2" && arg.DropType is TreeDropType.AsFirstChild or TreeDropType.AsLastChild)
-        {
-            return Task.FromResult(false);
-        }
-        // 如果拖拽到 Id=2 的节点下的兄弟节点则不允许
-        if (arg.DropType is TreeDropType.AsSiblingBelow && arg.Target.Parent?.Value.Id == "2")
-        {
-            return Task.FromResult(false);
-        }
-        // 如果 Id=6 的节点则不允许拖出
-        if (arg.Source?.Value.Id == "6")
-        {
-            return Task.FromResult(false);
-        }
-        return Task.FromResult(true);
+        //if (arg.Target.Value.Id == "2" && arg.DropType is TreeDropType.AsFirstChild or TreeDropType.AsLastChild)
+        //{
+        //    return Task.FromResult(false);
+        //}
+        //// 如果拖拽到 Id=2 的节点下的兄弟节点则不允许
+        //if (arg.DropType is TreeDropType.AsSiblingBelow && arg.Target.Parent?.Value.Id == "2")
+        //{
+        //    return Task.FromResult(false);
+        //}
+        //// 如果 Id=6 的节点则不允许拖出
+        //if (arg.Source?.Value.Id == "6")
+        //{
+        //    return Task.FromResult(false);
+        //}
+        //return Task.FromResult(true);
+        return Task.CompletedTask;
     }
 
     private Task OnTreeItemKeyboardClick(TreeViewItem<TreeFoo> item)

src/BootstrapBlazor/Components/TreeView/TreeView.razor.cs

@@ -274,6 +274,12 @@ public partial class TreeView<TItem> : IModelEqualityComparer<TItem>
     [Parameter]
     public bool AllowDrag { get; set; }
 
+    /// <summary>
+    /// 获得/设置 拖动标签页结束回调方法
+    /// </summary>
+    [Parameter]
+    public Func<TreeViewItem<TItem>, Task>? OnDragItemEndAsync { get; set; }
+
     [Inject]
     [NotNull]
     private IStringLocalizer<TreeView<TItem>>? Localizer { get; set; }