From b4cb4fb7552d35c267bdb66913e4c822f16346ab Mon Sep 17 00:00:00 2001
From: crupest <crupest@outlook.com>
Date: Thu, 29 Oct 2020 00:29:04 +0800
Subject: ...

---
 src/ui/render/RenderObject.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'src/ui/render/RenderObject.cpp')

diff --git a/src/ui/render/RenderObject.cpp b/src/ui/render/RenderObject.cpp
index fd0c7712..57929a21 100644
--- a/src/ui/render/RenderObject.cpp
+++ b/src/ui/render/RenderObject.cpp
@@ -41,6 +41,12 @@ void RenderObject::RemoveChild(const Index position) {
   OnRemoveChild(removed_child, position);
 }
 
+void RenderObject::TraverseDescendants(
+    const std::function<void(RenderObject*)>& action) {
+  action(this);
+  for (auto child : children_) child->TraverseDescendants(action);
+}
+
 Point RenderObject::GetTotalOffset() const {
   Point result{};
   const RenderObject* render_object = this;
-- 
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