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398bf10b92
This adds the `SkipChildrenAndContinue` option, where traversal continues but child nodes are not included.
70 lines
2.4 KiB
C++
70 lines
2.4 KiB
C++
/*
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* Copyright (c) 2020, the SerenityOS developers.
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibWeb/Bindings/HTMLLabelElementPrototype.h>
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#include <LibWeb/DOM/Document.h>
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#include <LibWeb/HTML/HTMLLabelElement.h>
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#include <LibWeb/Layout/Label.h>
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namespace Web::HTML {
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JS_DEFINE_ALLOCATOR(HTMLLabelElement);
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HTMLLabelElement::HTMLLabelElement(DOM::Document& document, DOM::QualifiedName qualified_name)
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: HTMLElement(document, move(qualified_name))
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{
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}
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HTMLLabelElement::~HTMLLabelElement() = default;
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void HTMLLabelElement::initialize(JS::Realm& realm)
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{
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Base::initialize(realm);
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WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLLabelElement);
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}
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JS::GCPtr<Layout::Node> HTMLLabelElement::create_layout_node(NonnullRefPtr<CSS::StyleProperties> style)
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{
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return heap().allocate_without_realm<Layout::Label>(document(), this, move(style));
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}
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// https://html.spec.whatwg.org/multipage/forms.html#labeled-control
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JS::GCPtr<HTMLElement> HTMLLabelElement::control() const
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{
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JS::GCPtr<HTMLElement> control;
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// The for attribute may be specified to indicate a form control with which the caption is
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// to be associated. If the attribute is specified, the attribute's value must be the ID of
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// a labelable element in the same tree as the label element. If the attribute is specified
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// and there is an element in the tree whose ID is equal to the value of the for attribute,
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// and the first such element in tree order is a labelable element, then that element is the
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// label element's labeled control.
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if (for_().has_value()) {
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for_each_in_inclusive_subtree_of_type<HTMLElement>([&](auto& element) {
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if (element.id() == *for_() && element.is_labelable()) {
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control = &const_cast<HTMLElement&>(element);
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return TraversalDecision::Break;
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}
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return TraversalDecision::Continue;
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});
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return control;
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}
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// If the for attribute is not specified, but the label element has a labelable element descendant,
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// then the first such descendant in tree order is the label element's labeled control.
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for_each_in_subtree_of_type<HTMLElement>([&](auto& element) {
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if (element.is_labelable()) {
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control = &const_cast<HTMLElement&>(element);
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return TraversalDecision::Break;
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}
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return TraversalDecision::Continue;
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});
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return control;
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}
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}
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