mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2025-11-02 22:30:58 +00:00
f87041bf3a
Resulting in a massive rename across almost everywhere! Alongside the namespace change, we now have the following names: * JS::NonnullGCPtr -> GC::Ref * JS::GCPtr -> GC::Ptr * JS::HeapFunction -> GC::Function * JS::CellImpl -> GC::Cell * JS::Handle -> GC::Root
87 lines
3 KiB
C++
87 lines
3 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/FormAssociatedElement.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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GC_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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GC::Ptr<Layout::Node> HTMLLabelElement::create_layout_node(CSS::StyleProperties style)
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{
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return heap().allocate<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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GC::Ptr<HTMLElement> HTMLLabelElement::control() const
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{
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GC::Ptr<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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root().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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// https://html.spec.whatwg.org/multipage/forms.html#dom-label-form
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GC::Ptr<HTMLFormElement> HTMLLabelElement::form() const
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{
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auto labeled_control = control();
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// 1. If the label element has no labeled control, then return null.
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if (!labeled_control)
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return {};
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// 2. If the label element's labeled control is not a form-associated element, then return null.
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if (!is<FormAssociatedElement>(*labeled_control))
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return {};
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// 3. Return the label element's labeled control's form owner (which can still be null).
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return dynamic_cast<FormAssociatedElement*>(labeled_control.ptr())->form();
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}
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}
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