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LibHTML: Add TreeNode::for_each_in_subtree_of_type<T>()

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This allows you to iterate a subtree and get a callback for every node
where is<T>(node) == true. This makes for quite pleasant DOM traversal.
This commit is contained in:
Andreas Kling 2019-12-18 21:34:03 +01:00
parent 54bd322881
commit 1aea8f116b
5 changed files with 56 additions and 25 deletions
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5
Libraries/LibHTML/DOM/Node.cpp
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@ -74,9 +74,8 @@ RefPtr<LayoutNode> Node::create_layout_node(const StyleProperties*) const
void Node::invalidate_style()
{
for_each_in_subtree([&](auto& node) {
if (is<Element>(node))
node.set_needs_style_update(true);
for_each_in_subtree_of_type<Element>([&](auto& element) {
element.set_needs_style_update(true);
return IterationDecision::Continue;
});
document().schedule_style_update();