Fix a bunch of templating issues

2024-07-17 20:43:39 +01:00
parent 60b784aa25
commit efd00ff81a
11 changed files with 315 additions and 116 deletions
@@ -0,0 +1,39 @@
+using Avalonia.Controls;
+using Avalonia.Controls.Templates;
+
+namespace Toolkit.UI.Controls.Avalonia;
+
+public class OverflowList :
+    ListBox
+{
+    protected override Control CreateContainerForItemOverride(object? item, int index, object? recycleKey)
+    {
+        if (recycleKey is IDataTemplate itemContainerTemplate)
+        {
+            if (itemContainerTemplate.Build(item) is OverflowItem container)
+            {
+                return container;
+            }
+        }
+
+        return new OverflowItem();
+    }
+
+    protected override bool NeedsContainerOverride(object? item, int index, out object? recycleKey)
+    {
+        if (item is OverflowItem)
+        {
+            recycleKey = null;
+            return false;
+        }
+
+        if (this.FindDataTemplate(item, ItemTemplate) is IDataTemplate itemContainerTemplate)
+        {
+            recycleKey = itemContainerTemplate;
+            return true;
+        }
+
+        recycleKey = DefaultRecycleKey;
+        return true;
+    }
+}