72 lines
2.8 KiB
C++
72 lines
2.8 KiB
C++
/*
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* Copyright (c) 2020-2022, Andreas Kling <kling@serenityos.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/Element.h>
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#include <LibWeb/Forward.h>
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namespace Web::HTML {
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// https://html.spec.whatwg.org/multipage/parsing.html#stack-of-open-elements
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class StackOfOpenElements {
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public:
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// Initially, the stack of open elements is empty.
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// The stack grows downwards; the topmost node on the stack is the first one added to the stack,
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// and the bottommost node of the stack is the most recently added node in the stack
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// (notwithstanding when the stack is manipulated in a random access fashion as part of the handling for misnested tags).
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StackOfOpenElements() = default;
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~StackOfOpenElements();
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DOM::Element& first() { return *m_elements.first(); }
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DOM::Element& last() { return *m_elements.last(); }
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bool is_empty() const { return m_elements.is_empty(); }
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void push(JS::NonnullGCPtr<DOM::Element> element) { m_elements.append(element); }
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JS::NonnullGCPtr<DOM::Element> pop() { return *m_elements.take_last(); }
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void remove(DOM::Element const& element);
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void replace(DOM::Element const& to_remove, JS::NonnullGCPtr<DOM::Element> to_add);
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void insert_immediately_below(JS::NonnullGCPtr<DOM::Element> element_to_add, DOM::Element const& target);
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const DOM::Element& current_node() const { return *m_elements.last(); }
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DOM::Element& current_node() { return *m_elements.last(); }
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bool has_in_scope(DeprecatedFlyString const& tag_name) const;
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bool has_in_button_scope(DeprecatedFlyString const& tag_name) const;
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bool has_in_table_scope(DeprecatedFlyString const& tag_name) const;
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bool has_in_list_item_scope(DeprecatedFlyString const& tag_name) const;
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bool has_in_select_scope(DeprecatedFlyString const& tag_name) const;
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bool has_in_scope(const DOM::Element&) const;
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bool contains(const DOM::Element&) const;
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bool contains(DeprecatedFlyString const& tag_name) const;
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auto const& elements() const { return m_elements; }
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auto& elements() { return m_elements; }
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void pop_until_an_element_with_tag_name_has_been_popped(DeprecatedFlyString const&);
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JS::GCPtr<DOM::Element> topmost_special_node_below(DOM::Element const&);
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struct LastElementResult {
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JS::GCPtr<DOM::Element> element;
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ssize_t index;
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};
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LastElementResult last_element_with_tag_name(DeprecatedFlyString const&);
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JS::GCPtr<DOM::Element> element_immediately_above(DOM::Element const&);
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void visit_edges(JS::Cell::Visitor&);
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private:
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bool has_in_scope_impl(DeprecatedFlyString const& tag_name, Vector<DeprecatedFlyString> const&) const;
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bool has_in_scope_impl(const DOM::Element& target_node, Vector<DeprecatedFlyString> const&) const;
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Vector<JS::NonnullGCPtr<DOM::Element>> m_elements;
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};
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}
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