who the fuck knows

addons/anim_player_refactor/lib/editor_util.gd

@@ -0,0 +1,64 @@
+# Utility class for parsing and hacking the editor
+
+## Find menu button to add option to
+static func find_animation_menu_button(node: Node) -> MenuButton:
+	var animation_editor := find_editor_control_with_class(node, "AnimationPlayerEditor")
+	if animation_editor:
+		return find_editor_control_with_class(
+			animation_editor, 
+			"MenuButton", 
+			func(node): return node.text == "Animation"
+		)
+
+	return null
+
+
+## General utility to find a control in the editor using an iterative search
+static func find_editor_control_with_class(
+		base: Control, 
+		p_class_name: StringName,
+		condition := func(node: Node): return true
+	) -> Node:
+	if base.get_class() == p_class_name and condition.call(base):
+		return base
+		
+	for child in base.get_children():
+		if not child is Control:
+			continue
+			
+		var found = find_editor_control_with_class(child, p_class_name)
+		if found:
+			return found
+		
+	return null
+
+
+
+# Finds the active animation player (either pinned or selected)
+static func find_active_anim_player(base_control: Control, scene_tree: Tree) -> AnimationPlayer:
+	var find_anim_player_recursive: Callable
+	
+	var pin_icon := scene_tree.get_theme_icon("Pin", "EditorIcons")
+	
+	var stack: Array[TreeItem] = []
+	stack.append(scene_tree.get_root())
+	
+	while not stack.is_empty():
+		var current := stack.pop_back() as TreeItem
+		
+		# Check for pin icon
+		for i in current.get_button_count(0):
+			if current.get_button(0, i) == pin_icon:
+				var node := base_control.get_node_or_null(current.get_metadata(0))
+				if node is AnimationPlayer:
+					return node
+		
+		if current.is_selected(0):
+			var node := base_control.get_node_or_null(current.get_metadata(0))
+			if node is AnimationPlayer:
+				return node
+		
+		for i in range(current.get_child_count() - 1, -1, -1):
+			stack.push_back(current.get_child(i))
+		
+	return null