/* * Copyright (c) 2020, the SerenityOS developers. * * SPDX-License-Identifier: BSD-2-Clause */ #include #include #include namespace Web::HTML { JS_DEFINE_ALLOCATOR(HTMLLabelElement); HTMLLabelElement::HTMLLabelElement(DOM::Document& document, DOM::QualifiedName qualified_name) : HTMLElement(document, move(qualified_name)) { } HTMLLabelElement::~HTMLLabelElement() = default; void HTMLLabelElement::initialize(JS::Realm& realm) { Base::initialize(realm); WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLLabelElement); } JS::GCPtr HTMLLabelElement::create_layout_node(NonnullRefPtr style) { return heap().allocate_without_realm(document(), this, move(style)); } // https://html.spec.whatwg.org/multipage/forms.html#labeled-control JS::GCPtr HTMLLabelElement::control() const { JS::GCPtr control; // The for attribute may be specified to indicate a form control with which the caption is // to be associated. If the attribute is specified, the attribute's value must be the ID of // a labelable element in the same tree as the label element. If the attribute is specified // and there is an element in the tree whose ID is equal to the value of the for attribute, // and the first such element in tree order is a labelable element, then that element is the // label element's labeled control. if (for_().has_value()) { for_each_in_inclusive_subtree_of_type([&](auto& element) { if (element.id() == *for_() && element.is_labelable()) { control = &const_cast(element); return IterationDecision::Break; } return IterationDecision::Continue; }); return control; } // If the for attribute is not specified, but the label element has a labelable element descendant, // then the first such descendant in tree order is the label element's labeled control. for_each_in_subtree_of_type([&](auto& element) { if (element.is_labelable()) { control = &const_cast(element); return IterationDecision::Break; } return IterationDecision::Continue; }); return control; } }