/*

 * Copyright (c) 2020, the SerenityOS developers.

 *

 * SPDX-License-Identifier: BSD-2-Clause

 */

#include <LibWeb/Bindings/HTMLButtonElementPrototype.h>

#include <LibWeb/DOM/Document.h>

#include <LibWeb/HTML/HTMLButtonElement.h>

#include <LibWeb/HTML/HTMLFormElement.h>

namespace Web::HTML {

JS_DEFINE_ALLOCATOR(HTMLButtonElement);

HTMLButtonElement::HTMLButtonElement(DOM::Document& document, DOM::QualifiedName qualified_name)

    : HTMLElement(document, move(qualified_name))

{

}

HTMLButtonElement::~HTMLButtonElement() = default;

void HTMLButtonElement::initialize(JS::Realm& realm)

{

    Base::initialize(realm);

    WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLButtonElement);

}

HTMLButtonElement::TypeAttributeState HTMLButtonElement::type_state() const

{

    auto value = get_attribute_value(HTML::AttributeNames::type);

#define __ENUMERATE_HTML_BUTTON_TYPE_ATTRIBUTE(keyword, state) \

    if (value.equals_ignoring_ascii_case(#keyword##sv))        \

        return HTMLButtonElement::TypeAttributeState::state;

    ENUMERATE_HTML_BUTTON_TYPE_ATTRIBUTES

#undef __ENUMERATE_HTML_BUTTON_TYPE_ATTRIBUTE

    // The missing value default and invalid value default are the Submit Button state.

    return HTMLButtonElement::TypeAttributeState::Submit;

}

WebIDL::ExceptionOr<void> HTMLButtonElement::set_type(String const& type)

{

    return set_attribute(HTML::AttributeNames::type, type);

}

// https://html.spec.whatwg.org/multipage/interaction.html#dom-tabindex

i32 HTMLButtonElement::default_tab_index_value() const

{

    // See the base function for the spec comments.

    return 0;

}

// https://html.spec.whatwg.org/multipage/forms.html#concept-submit-button

// https://html.spec.whatwg.org/multipage/form-elements.html#the-button-element:concept-submit-button

bool HTMLButtonElement::is_submit_button() const

{

    // If the type attribute is in the Submit Button state, the element is specifically a submit button.

    return type_state() == TypeAttributeState::Submit;

}

// https://html.spec.whatwg.org/multipage/form-elements.html#the-button-element:concept-fe-value

String HTMLButtonElement::value() const

{

    return attribute(AttributeNames::value).value_or(String {});

}

bool HTMLButtonElement::has_activation_behavior() const

{

    return true;

}

void HTMLButtonElement::activation_behavior(DOM::Event const& event)

{

    // https://html.spec.whatwg.org/multipage/form-elements.html#the-button-element:activation-behaviour

    // 1. If element is disabled, then return.

    if (!enabled())

        return;

    // 2. If element's node document is not fully active, then return.

    if (!this->document().is_fully_active())

        return;

    // 3. If element has a form owner then switch on element's type attribute's state, then:

    if (form() != nullptr) {

        switch (type_state()) {

        case TypeAttributeState::Submit:

            // Submit Button

            // Submit element's form owner from element with userInvolvement set to event's user navigation involvement.

            form()->submit_form(*this, { .user_involvement = user_navigation_involvement(event) }).release_value_but_fixme_should_propagate_errors();

            break;

        case TypeAttributeState::Reset:

            // Reset Button

            // Reset element's form owner.

            form()->reset_form();

            break;

        case TypeAttributeState::Button:

            // Button

            // Do nothing.

            break;

        default:

            VERIFY_NOT_REACHED();

        }

    }

    // 4. FIXME: Run the popover target attribute activation behavior given element.

}

}