port from perforce

intromat/NodeNetworkToolkit/BreadcrumbBar/BreadcrumbBarView.xaml.cs

@@ -0,0 +1,47 @@
+using System;
+using System.Collections.Generic;
+using System.Reactive.Disposables;
+using System.Reactive.Linq;
+using System.Windows;
+using System.Windows.Controls;
+using NodeNetwork.Utilities;
+using ReactiveUI;
+using ReactiveUI.Legacy;
+
+namespace NodeNetwork.Toolkit.BreadcrumbBar
+{
+    public partial class BreadcrumbBarView : UserControl, IViewFor<BreadcrumbBarViewModel>
+    {
+        #region ViewModel
+        public static readonly DependencyProperty ViewModelProperty =
+            DependencyProperty.Register(nameof(ViewModel), typeof(BreadcrumbBarViewModel), typeof(BreadcrumbBarView), new PropertyMetadata(null));
+
+        public BreadcrumbBarViewModel ViewModel
+        {
+            get => (BreadcrumbBarViewModel)GetValue(ViewModelProperty);
+            set => SetValue(ViewModelProperty, value);
+        }
+
+        object IViewFor.ViewModel
+        {
+            get => ViewModel;
+            set => ViewModel = (BreadcrumbBarViewModel)value;
+        }
+        #endregion
+
+        public BreadcrumbBarView()
+        {
+            InitializeComponent();
+
+            this.WhenActivated(d =>
+            {
+                this.BindList(ViewModel, vm => vm.ActivePath, v => v.list.ItemsSource).DisposeWith(d);
+                this.WhenAnyValue(v => v.list.SelectedItem)
+                    .Where(i => i != null)
+                    .Cast<BreadcrumbViewModel>()
+                    .Do(_ => list.UnselectAll())
+                    .InvokeCommand(this, v => v.ViewModel.SelectCrumb).DisposeWith(d);
+            });
+        }
+    }
+}