Updating PageLayout to notify when one of its members changed

framework/src/Volo.Abp.AspNetCore.Components.Web.Theming/Layout/PageHeader.razor.cs

@@ -4,6 +4,8 @@ using System.Collections.Generic;
 using System.Threading.Tasks;
 using Volo.Abp.AspNetCore.Components.Web.Theming.PageToolbars;
 using Volo.Abp.BlazoriseUI;
+using System.Linq;
+using System.Collections.ObjectModel;
 
 namespace Volo.Abp.AspNetCore.Components.Web.Theming.Layout;
 
@@ -30,8 +32,8 @@ public partial class PageHeader : ComponentBase
 
     [Parameter] // TODO: Consider removing this property in future and use only PageLayout.
     public List<BreadcrumbItem> BreadcrumbItems {
-        get => PageLayout.BreadcrumbItems;
-        set => PageLayout.BreadcrumbItems = value;
+        get => PageLayout.BreadcrumbItems.ToList();
+        set => PageLayout.BreadcrumbItems = new ObservableCollection<BreadcrumbItem>(value);
     }
 
     [Parameter]

framework/src/Volo.Abp.AspNetCore.Components.Web.Theming/Layout/PageLayout.cs

@@ -1,16 +1,29 @@
-using System.Collections.Generic;
+using System.Collections.ObjectModel;
+using System.ComponentModel;
 using Volo.Abp.AspNetCore.Components.Web.Theming.PageToolbars;
 using Volo.Abp.BlazoriseUI;
 using Volo.Abp.DependencyInjection;
 
 namespace Volo.Abp.AspNetCore.Components.Web.Theming.Layout;
 
-public class PageLayout : IScopedDependency
+public class PageLayout : IScopedDependency, INotifyPropertyChanged
 {
+    private string title;
+
     // TODO: Consider using this property for setting Page Title too.
-    public virtual string Title { get; set; }
+    public virtual string Title
+    {
+        get => title;
+        set
+        {
+            title = value;
+            PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(nameof(Title)));
+        }
+    }
+
+    public virtual ObservableCollection<BreadcrumbItem> BreadcrumbItems { get; set; } = new();
 
-    public virtual List<BreadcrumbItem> BreadcrumbItems { get; set; } = new();
+    public virtual ObservableCollection<PageToolbarItem> ToolbarItems { get; set; } = new();
 
-    public virtual List<PageToolbarItem> ToolbarItems { get; set; } = new();
+    public event PropertyChangedEventHandler PropertyChanged;
 }