diff options
Diffstat (limited to 'Libraries/LibHTML/TreeNode.h')
| -rw-r--r-- | Libraries/LibHTML/TreeNode.h | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/Libraries/LibHTML/TreeNode.h b/Libraries/LibHTML/TreeNode.h index 75f878fd80..2b498720f4 100644 --- a/Libraries/LibHTML/TreeNode.h +++ b/Libraries/LibHTML/TreeNode.h @@ -50,8 +50,10 @@ public: void append_child(NonnullRefPtr<T> node, bool call_inserted_into = true); void donate_all_children_to(T& node); + bool is_child_allowed(const T&) const { return true; } + protected: - TreeNode() { } + TreeNode() {} private: int m_ref_count { 1 }; @@ -66,6 +68,10 @@ template<typename T> inline void TreeNode<T>::append_child(NonnullRefPtr<T> node, bool call_inserted_into) { ASSERT(!node->m_parent); + + if (!static_cast<T*>(this)->is_child_allowed(*node)) + return; + if (m_last_child) m_last_child->m_next_sibling = node.ptr(); node->m_previous_sibling = m_last_child; @@ -82,6 +88,10 @@ template<typename T> inline void TreeNode<T>::prepend_child(NonnullRefPtr<T> node, bool call_inserted_into) { ASSERT(!node->m_parent); + + if (!static_cast<T*>(this)->is_child_allowed(*node)) + return; + if (m_first_child) m_first_child->m_previous_sibling = node.ptr(); node->m_next_sibling = m_first_child; @@ -112,7 +122,6 @@ inline void TreeNode<T>::donate_all_children_to(T& node) m_last_child = nullptr; } - template<typename T> inline bool TreeNode<T>::is_ancestor_of(const TreeNode<T>& other) const { |