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https://github.com/LadybirdBrowser/ladybird.git
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e555edd770
Generate correct bindings for callback interfaces: only create an interface object when the interface declares constants, and set up the prototype correctly. This also lets us tidy up some IDL for these callback interfaces.
76 lines
2.1 KiB
C++
76 lines
2.1 KiB
C++
/*
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* Copyright (c) 2022, Andreas Kling <andreas@ladybird.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <LibWeb/DOM/NodeFilter.h>
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namespace Web::DOM {
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// https://dom.spec.whatwg.org/#treewalker
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class TreeWalker final : public Bindings::PlatformObject {
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WEB_PLATFORM_OBJECT(TreeWalker, Bindings::PlatformObject);
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GC_DECLARE_ALLOCATOR(TreeWalker);
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public:
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[[nodiscard]] static GC::Ref<TreeWalker> create(JS::Realm&, Node& root, unsigned what_to_show, GC::Ptr<NodeFilter>);
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virtual ~TreeWalker() override;
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GC::Ref<Node> current_node() const;
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void set_current_node(Node&);
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JS::ThrowCompletionOr<GC::Ptr<Node>> parent_node();
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JS::ThrowCompletionOr<GC::Ptr<Node>> first_child();
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JS::ThrowCompletionOr<GC::Ptr<Node>> last_child();
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JS::ThrowCompletionOr<GC::Ptr<Node>> previous_sibling();
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JS::ThrowCompletionOr<GC::Ptr<Node>> next_sibling();
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JS::ThrowCompletionOr<GC::Ptr<Node>> previous_node();
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JS::ThrowCompletionOr<GC::Ptr<Node>> next_node();
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GC::Ref<Node> root() { return m_root; }
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GC::Ptr<NodeFilter> filter() const;
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unsigned what_to_show() const { return m_what_to_show; }
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private:
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explicit TreeWalker(JS::Realm&, Node& root);
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virtual void initialize(JS::Realm&) override;
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virtual void visit_edges(Cell::Visitor&) override;
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enum class ChildTraversalType {
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First,
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Last,
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};
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JS::ThrowCompletionOr<GC::Ptr<Node>> traverse_children(ChildTraversalType);
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enum class SiblingTraversalType {
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Next,
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Previous,
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};
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JS::ThrowCompletionOr<GC::Ptr<Node>> traverse_siblings(SiblingTraversalType);
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JS::ThrowCompletionOr<NodeFilter::Result> filter(Node&);
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// https://dom.spec.whatwg.org/#concept-traversal-root
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GC::Ref<Node> m_root;
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// https://dom.spec.whatwg.org/#treewalker-current
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GC::Ref<Node> m_current;
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// https://dom.spec.whatwg.org/#concept-traversal-whattoshow
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unsigned m_what_to_show { 0 };
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// https://dom.spec.whatwg.org/#concept-traversal-filter
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GC::Ptr<NodeFilter> m_filter;
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// https://dom.spec.whatwg.org/#concept-traversal-active
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bool m_active { false };
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};
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}
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