From 8ba976b0ba8e811a981bdd2e70d805ac5c61ac33 Mon Sep 17 00:00:00 2001
From: Misaki <misaki_39@outlook.com>
Date: Sat, 28 Mar 2026 12:31:52 +0900
Subject: [PATCH] feat(dock): add core data models for docking system

---
 .../Internal/Docking/DockGroupNode.cs         | 27 +++++++++++++++++++
 .../Controls/Internal/Docking/DockNode.cs     |  9 +++++++
 .../Internal/Docking/DockPanelNode.cs         | 15 +++++++++++
 3 files changed, 51 insertions(+)
 create mode 100644 src/Editor/Ghost.Editor.Core/Controls/Internal/Docking/DockGroupNode.cs
 create mode 100644 src/Editor/Ghost.Editor.Core/Controls/Internal/Docking/DockNode.cs
 create mode 100644 src/Editor/Ghost.Editor.Core/Controls/Internal/Docking/DockPanelNode.cs

diff --git a/src/Editor/Ghost.Editor.Core/Controls/Internal/Docking/DockGroupNode.cs b/src/Editor/Ghost.Editor.Core/Controls/Internal/Docking/DockGroupNode.cs
new file mode 100644
index 0000000..02ea774
--- /dev/null
+++ b/src/Editor/Ghost.Editor.Core/Controls/Internal/Docking/DockGroupNode.cs
@@ -0,0 +1,27 @@
+using System.Collections.ObjectModel;
+using CommunityToolkit.Mvvm.ComponentModel;
+using Microsoft.UI.Xaml.Controls;
+
+namespace Ghost.Editor.Core.Controls.Internal.Docking;
+
+public partial class DockGroupNode : DockNode
+{
+    [ObservableProperty]
+    private Orientation _orientation = Orientation.Horizontal;
+
+    public ObservableCollection<DockNode> Children { get; } = new();
+
+    public void AddChild(DockNode node)
+    {
+        node.Parent = this;
+        Children.Add(node);
+    }
+
+    public void RemoveChild(DockNode node)
+    {
+        if (Children.Remove(node))
+        {
+            node.Parent = null;
+        }
+    }
+}
diff --git a/src/Editor/Ghost.Editor.Core/Controls/Internal/Docking/DockNode.cs b/src/Editor/Ghost.Editor.Core/Controls/Internal/Docking/DockNode.cs
new file mode 100644
index 0000000..ba0aa3a
--- /dev/null
+++ b/src/Editor/Ghost.Editor.Core/Controls/Internal/Docking/DockNode.cs
@@ -0,0 +1,9 @@
+using CommunityToolkit.Mvvm.ComponentModel;
+
+namespace Ghost.Editor.Core.Controls.Internal.Docking;
+
+public abstract partial class DockNode : ObservableObject
+{
+    [ObservableProperty]
+    private DockGroupNode? _parent;
+}
diff --git a/src/Editor/Ghost.Editor.Core/Controls/Internal/Docking/DockPanelNode.cs b/src/Editor/Ghost.Editor.Core/Controls/Internal/Docking/DockPanelNode.cs
new file mode 100644
index 0000000..6d3f471
--- /dev/null
+++ b/src/Editor/Ghost.Editor.Core/Controls/Internal/Docking/DockPanelNode.cs
@@ -0,0 +1,15 @@
+using System.Collections.ObjectModel;
+using CommunityToolkit.Mvvm.ComponentModel;
+
+namespace Ghost.Editor.Core.Controls.Internal.Docking;
+
+public partial class DockPanelNode : DockNode
+{
+    public ObservableCollection<object> Items { get; } = new();
+
+    [ObservableProperty]
+    private int _selectedIndex = -1;
+
+    [ObservableProperty]
+    private object? _selectedItem;
+}