feat: wow, first prototype of navigation menu.

2023-06-22 22:00:28 +08:00
parent f4bb4d379e
commit bacf1a6330
9 changed files with 322 additions and 0 deletions
--- a/src/Ursa/Controls/Navigation/NavigationMenu.cs
+++ b/src/Ursa/Controls/Navigation/NavigationMenu.cs
@@ -0,0 +1,68 @@
+using System.Collections;
+using System.Collections.Specialized;
+using Avalonia;
+using Avalonia.Collections;
+using Avalonia.Controls;
+using Avalonia.Controls.Presenters;
+using Avalonia.Controls.Primitives;
+using Avalonia.Controls.Templates;
+using Avalonia.Input;
+using Avalonia.Markup.Xaml.Templates;
+using Avalonia.Metadata;
+
+namespace Ursa.Controls;
+
+public class NavigationMenu: HeaderedSelectingItemsControl
+{
+    public static readonly StyledProperty<object?> FooterProperty = AvaloniaProperty.Register<NavigationMenu, object?>(
+        nameof(Footer));
+
+    public object? Footer
+    {
+        get => GetValue(FooterProperty);
+        set => SetValue(FooterProperty, value);
+    }
+
+    public static readonly StyledProperty<IDataTemplate> FooterTemplateProperty = AvaloniaProperty.Register<NavigationMenu, IDataTemplate>(
+        nameof(FooterTemplate));
+
+    public IDataTemplate FooterTemplate
+    {
+        get => GetValue(FooterTemplateProperty);
+        set => SetValue(FooterTemplateProperty, value);
+    }
+
+    public static readonly StyledProperty<object?> SelectedMenuItemProperty = AvaloniaProperty.Register<NavigationMenu, object?>(
+        nameof(SelectedMenuItem));
+
+    public object? SelectedMenuItem
+    {
+        get => GetValue(SelectedMenuItemProperty);
+        set => SetValue(SelectedMenuItemProperty, value);
+    }
+    
+    internal void UpdateSelection(NavigationMenuItem source)
+    {
+        var children = this.ItemsPanelRoot?.Children;
+        if (children is not null)
+        {
+            foreach (var child in children)
+            {
+                NavigationMenuItem? item = null;
+                if (child is NavigationMenuItem i)
+                {
+                    item = i;
+                }
+                else if (child is ContentPresenter { Child: NavigationMenuItem i2 })
+                {
+                    item = i2;
+                }
+                if (item != null)
+                {
+                    if(Equals(item, source)) continue;
+                    item.SetSelection(null, false, false);
+                }
+            }
+        }
+    }
+}