From fa1764d7cb77aa683c6049f915a46b981f9161f7 Mon Sep 17 00:00:00 2001
From: crupest <crupest@outlook.com>
Date: Tue, 8 Feb 2022 21:13:01 +0800
Subject: ...

---
 src/ui/controls/Control.cpp | 17 ++++++++++++++++-
 1 file changed, 16 insertions(+), 1 deletion(-)

(limited to 'src/ui/controls/Control.cpp')

diff --git a/src/ui/controls/Control.cpp b/src/ui/controls/Control.cpp
index bda8cb35..36d5cd60 100644
--- a/src/ui/controls/Control.cpp
+++ b/src/ui/controls/Control.cpp
@@ -32,17 +32,32 @@ Control::Control() {
 }
 
 Control::~Control() {
-  for (const auto child : children_) delete child;
+  if (auto_delete_children_) {
+    for (const auto child : children_) {
+      delete child;
+    }
+  }
 }
 
 host::WindowHost* Control::GetWindowHost() const { return window_host_; }
 
+Index Control::IndexOf(Control* child) const {
+  for (Index i = 0; i < children_.size(); ++i) {
+    if (children_[i] == child) return i;
+  }
+  return -1;
+}
+
 void Control::TraverseDescendants(
     const std::function<void(Control*)>& predicate) {
   predicate(this);
   for (auto c : GetChildren()) c->TraverseDescendants(predicate);
 }
 
+void Control::RemoveFromParent() {
+  if (parent_) parent_->RemoveChild(parent_->IndexOf(this));
+}
+
 bool Control::HasFocus() {
   auto host = GetWindowHost();
   if (host == nullptr) return false;
-- 
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