added forge addon

addons/forge/editor/attributes/AttributeEditorProperty.cs

@@ -0,0 +1,101 @@
+// Copyright © Gamesmiths Guild.
+
+#if TOOLS
+using Godot;
+
+namespace Gamesmiths.Forge.Godot.Editor.Attributes;
+
+[Tool]
+public partial class AttributeEditorProperty : EditorProperty
+{
+	private const int ButtonSize = 26;
+	private const int PopupSize = 300;
+
+	private Label _label = null!;
+
+	public override void _Ready()
+	{
+		Texture2D dropdownIcon = EditorInterface.Singleton
+			.GetEditorTheme()
+			.GetIcon("GuiDropdown", "EditorIcons");
+
+		var hbox = new HBoxContainer();
+		_label = new Label { Text = "None", SizeFlagsHorizontal = SizeFlags.ExpandFill };
+		var button = new Button { Icon = dropdownIcon, CustomMinimumSize = new Vector2(ButtonSize, 0) };
+
+		hbox.AddChild(_label);
+		hbox.AddChild(button);
+		AddChild(hbox);
+
+		var popup = new Popup { Size = new Vector2I(PopupSize, PopupSize) };
+		var tree = new Tree
+		{
+			HideRoot = true,
+			AnchorRight = 1,
+			AnchorBottom = 1,
+		};
+		popup.AddChild(tree);
+
+		var bg = new StyleBoxFlat
+		{
+			BgColor = EditorInterface.Singleton
+				.GetEditorTheme()
+				.GetColor("dark_color_2", "Editor"),
+		};
+		tree.AddThemeStyleboxOverride("panel", bg);
+
+		AddChild(popup);
+
+		BuildAttributeTree(tree);
+
+		button.Pressed += () =>
+		{
+			Window win = GetWindow();
+			popup.Position = (Vector2I)button.GlobalPosition
+				+ win.Position
+				- new Vector2I(PopupSize - ButtonSize, -30);
+			popup.Popup();
+		};
+
+		tree.ItemActivated += () =>
+		{
+			TreeItem item = tree.GetSelected();
+			if (item?.HasMeta("attribute_path") != true)
+			{
+				return;
+			}
+
+			var fullPath = item.GetMeta("attribute_path").AsString();
+			_label.Text = fullPath;
+			EmitChanged(GetEditedProperty(), fullPath);
+			popup.Hide();
+		};
+	}
+
+	public override void _UpdateProperty()
+	{
+		var value = GetEditedObject().Get(GetEditedProperty()).AsString();
+		_label.Text = string.IsNullOrEmpty(value) ? "None" : value;
+	}
+
+	private static void BuildAttributeTree(Tree tree)
+	{
+		TreeItem root = tree.CreateItem();
+
+		foreach (var attributeSet in EditorUtils.GetAttributeSetOptions())
+		{
+			TreeItem setItem = tree.CreateItem(root);
+			setItem.SetText(0, attributeSet);
+			setItem.Collapsed = true;
+
+			foreach (var attribute in EditorUtils.GetAttributeOptions(attributeSet))
+			{
+				TreeItem attributeItem = tree.CreateItem(setItem);
+				var attributePath = $"{attributeSet}.{attribute}";
+				attributeItem.SetText(0, attribute);
+				attributeItem.SetMeta("attribute_path", attributePath);
+			}
+		}
+	}
+}
+#endif