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/*
* Copyright (c) 2020-2022, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/DeprecatedFlyString.h>
#include <AK/Noncopyable.h>
#include <AK/Vector.h>
#include <LibJS/Forward.h>
#include <LibWeb/Bindings/PlatformObject.h>
#include <LibWeb/DOM/DOMEventListener.h>
#include <LibWeb/Forward.h>
#include <LibWeb/HTML/EventHandler.h>
#include <LibWeb/WebIDL/ExceptionOr.h>
namespace Web::DOM {
class EventTarget : public Bindings::PlatformObject {
WEB_PLATFORM_OBJECT(EventTarget, Bindings::PlatformObject);
public:
virtual ~EventTarget() override;
static WebIDL::ExceptionOr<JS::NonnullGCPtr<EventTarget>> construct_impl(JS::Realm&);
virtual bool is_focusable() const { return false; }
void add_event_listener(FlyString const& type, IDLEventListener* callback, Variant<AddEventListenerOptions, bool> const& options);
void remove_event_listener(FlyString const& type, IDLEventListener* callback, Variant<EventListenerOptions, bool> const& options);
// NOTE: These are for internal use only. They operate as though addEventListener(type, callback) was called instead of addEventListener(type, callback, options).
void add_event_listener_without_options(FlyString const& type, IDLEventListener& callback);
void remove_event_listener_without_options(FlyString const& type, IDLEventListener& callback);
virtual bool dispatch_event(Event&);
WebIDL::ExceptionOr<bool> dispatch_event_binding(Event&);
virtual EventTarget* get_parent(Event const&) { return nullptr; }
void add_an_event_listener(DOMEventListener&);
void remove_an_event_listener(DOMEventListener&);
void remove_from_event_listener_list(DOMEventListener&);
Vector<JS::Handle<DOMEventListener>> event_listener_list();
Function<void(Event const&)> activation_behavior;
// NOTE: These only exist for checkbox and radio input elements.
virtual void legacy_pre_activation_behavior() { }
virtual void legacy_cancelled_activation_behavior() { }
virtual void legacy_cancelled_activation_behavior_was_not_called() { }
WebIDL::CallbackType* event_handler_attribute(FlyString const& name);
void set_event_handler_attribute(FlyString const& name, WebIDL::CallbackType*);
bool has_event_listener(FlyString const& type) const;
bool has_event_listeners() const;
protected:
explicit EventTarget(JS::Realm&);
void element_event_handler_attribute_changed(FlyString const& local_name, Optional<String> const& value);
virtual JS::ThrowCompletionOr<void> initialize(JS::Realm&) override;
virtual void visit_edges(Cell::Visitor&) override;
private:
Vector<JS::NonnullGCPtr<DOMEventListener>> m_event_listener_list;
// https://html.spec.whatwg.org/multipage/webappapis.html#event-handler-map
// Spec Note: The order of the entries of event handler map could be arbitrary. It is not observable through any algorithms that operate on the map.
HashMap<FlyString, JS::GCPtr<HTML::EventHandler>> m_event_handler_map;
WebIDL::CallbackType* get_current_value_of_event_handler(FlyString const& name);
void activate_event_handler(FlyString const& name, HTML::EventHandler& event_handler);
void deactivate_event_handler(FlyString const& name);
JS::ThrowCompletionOr<void> process_event_handler_for_event(FlyString const& name, Event& event);
};
bool is_window_reflecting_body_element_event_handler(FlyString const& name);
}
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