From 6c409310a8615dfe8614386065d7e8975ac76499 Mon Sep 17 00:00:00 2001
From: Andreas Kling <kling@serenityos.org>
Date: Sun, 24 May 2020 21:58:21 +0200
Subject: [PATCH] LibWeb: Add a way to opt out of TreeNode::append_child()
 notifications

This will be used temporarily by the new HTML parser while we're
bringing it up.
---
 Libraries/LibWeb/TreeNode.h | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/Libraries/LibWeb/TreeNode.h b/Libraries/LibWeb/TreeNode.h
index 5d96416b5b..30b7bbe83d 100644
--- a/Libraries/LibWeb/TreeNode.h
+++ b/Libraries/LibWeb/TreeNode.h
@@ -109,7 +109,7 @@ public:
     bool is_ancestor_of(const TreeNode&) const;
 
     void prepend_child(NonnullRefPtr<T> node);
-    void append_child(NonnullRefPtr<T> node);
+    void append_child(NonnullRefPtr<T> node, bool notify = true);
     NonnullRefPtr<T> remove_child(NonnullRefPtr<T> node);
     void donate_all_children_to(T& node);
 
@@ -188,7 +188,7 @@ public:
     }
 
 protected:
-    TreeNode() {}
+    TreeNode() { }
 
 private:
     int m_ref_count { 1 };
@@ -230,7 +230,7 @@ inline NonnullRefPtr<T> TreeNode<T>::remove_child(NonnullRefPtr<T> node)
 }
 
 template<typename T>
-inline void TreeNode<T>::append_child(NonnullRefPtr<T> node)
+inline void TreeNode<T>::append_child(NonnullRefPtr<T> node, bool notify)
 {
     ASSERT(!node->m_parent);
 
@@ -244,10 +244,12 @@ inline void TreeNode<T>::append_child(NonnullRefPtr<T> node)
     m_last_child = node.ptr();
     if (!m_first_child)
         m_first_child = m_last_child;
-    node->inserted_into(static_cast<T&>(*this));
+    if (notify)
+        node->inserted_into(static_cast<T&>(*this));
     (void)node.leak_ref();
 
-    static_cast<T*>(this)->children_changed();
+    if (notify)
+        static_cast<T*>(this)->children_changed();
 }
 
 template<typename T>