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LibWeb: Move tree iteration helpers from Node/LayoutNode to TreeNode

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Since these are generally useful in our trees, let's just keep them
in TreeNode instead of duplicating the helpers in subclasses.
This commit is contained in:
Andreas Kling
2020-08-10 13:52:49 +02:00
parent 62ea2c5437
commit eaf7e68408
3 changed files with 92 additions and 164 deletions
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26
Libraries/LibWeb/DOM/Node.h
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@@ -106,12 +106,6 @@ public:
Element* parent_element();
const Element* parent_element() const;
template<typename T>
const T* first_child_of_type() const;
template<typename T>
const T* first_ancestor_of_type() const;
virtual void inserted_into(Node&) { }
virtual void removed_from(Node&) { }
virtual void children_changed() { }
@@ -144,24 +138,4 @@ protected:
bool m_needs_style_update { true };
};
template<typename T>
inline const T* Node::first_child_of_type() const
{
for (auto* child = first_child(); child; child = child->next_sibling()) {
if (is<T>(*child))
return downcast<T>(child);
}
return nullptr;
}
template<typename T>
inline const T* Node::first_ancestor_of_type() const
{
for (auto* ancestor = parent(); ancestor; ancestor = ancestor->parent()) {
if (is<T>(*ancestor))
return downcast<T>(ancestor);
}
return nullptr;
}
}