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/*
* Copyright (c) 2020, the SerenityOS developers.
* Copyright (c) 2021-2022, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibWeb/HTML/HTMLFormElement.h>
#include <LibWeb/HTML/HTMLOptGroupElement.h>
#include <LibWeb/HTML/HTMLOptionElement.h>
#include <LibWeb/HTML/HTMLSelectElement.h>
namespace Web::HTML {
HTMLSelectElement::HTMLSelectElement(DOM::Document& document, DOM::QualifiedName qualified_name)
: FormAssociatedElement(document, move(qualified_name))
{
}
HTMLSelectElement::~HTMLSelectElement() = default;
// https://html.spec.whatwg.org/multipage/form-elements.html#dom-select-options
RefPtr<HTMLOptionsCollection> const& HTMLSelectElement::options()
{
if (!m_options) {
m_options = HTMLOptionsCollection::create(*this, [](DOM::Element const& element) {
// https://html.spec.whatwg.org/multipage/form-elements.html#concept-select-option-list
// The list of options for a select element consists of all the option element children of
// the select element, and all the option element children of all the optgroup element children
// of the select element, in tree order.
return is<HTMLOptionElement>(element);
});
}
return m_options;
}
// https://html.spec.whatwg.org/multipage/form-elements.html#dom-select-add
DOM::ExceptionOr<void> HTMLSelectElement::add(HTMLOptionOrOptGroupElement element, Optional<HTMLElementOrElementIndex> before)
{
// Similarly, the add(element, before) method must act like its namesake method on that same options collection.
return const_cast<RefPtr<HTMLOptionsCollection>&>(options())->add(move(element), move(before));
}
// https://html.spec.whatwg.org/multipage/form-elements.html#concept-select-option-list
NonnullRefPtrVector<HTMLOptionElement> HTMLSelectElement::list_of_options() const
{
// The list of options for a select element consists of all the option element children of the select element,
// and all the option element children of all the optgroup element children of the select element, in tree order.
NonnullRefPtrVector<HTMLOptionElement> list;
for_each_child_of_type<HTMLOptionElement>([&](HTMLOptionElement const& option_element) {
list.append(option_element);
});
for_each_child_of_type<HTMLOptGroupElement>([&](HTMLOptGroupElement const& optgroup_element) {
optgroup_element.for_each_child_of_type<HTMLOptionElement>([&](HTMLOptionElement const& option_element) {
list.append(option_element);
});
});
return list;
}
// https://html.spec.whatwg.org/multipage/form-elements.html#dom-select-selectedindex
int HTMLSelectElement::selected_index() const
{
// The selectedIndex IDL attribute, on getting, must return the index of the first option element in the list of options
// in tree order that has its selectedness set to true, if any. If there isn't one, then it must return −1.
int index = 0;
for (auto const& option_element : list_of_options()) {
if (option_element.selected())
return index;
++index;
}
return -1;
}
void HTMLSelectElement::set_selected_index(int index)
{
// On setting, the selectedIndex attribute must set the selectedness of all the option elements in the list of options to false,
// and then the option element in the list of options whose index is the given new value,
// if any, must have its selectedness set to true and its dirtiness set to true.
auto options = list_of_options();
for (auto& option : options)
option.m_selected = false;
if (index < 0 || index >= static_cast<int>(options.size()))
return;
auto& selected_option = options[index];
selected_option.m_selected = true;
selected_option.m_dirty = true;
}
}
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