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https://github.com/RGBCube/serenity
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e76e8e22b5
I can't imagine how this happened, but it seems we've managed to
conflate the "event listener" and "EventListener" concepts from the DOM
specification in some parts of the code.
We previously had two things:
- DOM::EventListener
- DOM::EventTarget::EventListenerRegistration
DOM::EventListener was roughly the "EventListener" IDL type,
and DOM::EventTarget::EventListenerRegistration was roughly the "event
listener" concept. However, they were used interchangeably (and
incorrectly!) in many places.
After this patch, we now have:
- DOM::IDLEventListener
- DOM::DOMEventListener
DOM::IDLEventListener is the "EventListener" IDL type,
and DOM::DOMEventListener is the "event listener" concept.
This patch also updates the addEventListener() and removeEventListener()
functions to follow the spec more closely, along with the "inner invoke"
function in our EventDispatcher.
88 lines
2.9 KiB
C++
88 lines
2.9 KiB
C++
/*
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* Copyright (c) 2020-2022, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/FlyString.h>
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#include <AK/Function.h>
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#include <AK/Noncopyable.h>
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#include <AK/Vector.h>
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#include <LibJS/Forward.h>
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#include <LibWeb/DOM/DOMEventListener.h>
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#include <LibWeb/DOM/ExceptionOr.h>
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#include <LibWeb/Forward.h>
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#include <LibWeb/HTML/EventHandler.h>
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namespace Web::DOM {
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class EventTarget {
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AK_MAKE_NONCOPYABLE(EventTarget);
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AK_MAKE_NONMOVABLE(EventTarget);
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public:
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virtual ~EventTarget();
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void ref() { ref_event_target(); }
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void unref() { unref_event_target(); }
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virtual bool is_focusable() const { return false; }
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void add_event_listener(FlyString const& type, RefPtr<IDLEventListener> callback);
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void remove_event_listener(FlyString const& type, RefPtr<IDLEventListener> callback);
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virtual bool dispatch_event(NonnullRefPtr<Event>);
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ExceptionOr<bool> dispatch_event_binding(NonnullRefPtr<Event>);
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virtual JS::Object* create_wrapper(JS::GlobalObject&) = 0;
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virtual EventTarget* get_parent(const Event&) { return nullptr; }
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void add_an_event_listener(NonnullRefPtr<DOMEventListener>);
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void remove_an_event_listener(DOMEventListener&);
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void remove_from_event_listener_list(DOMEventListener&);
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auto& event_listener_list() { return m_event_listener_list; }
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auto const& event_listener_list() const { return m_event_listener_list; }
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Function<void(const Event&)> activation_behavior;
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// NOTE: These only exist for checkbox and radio input elements.
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Function<void()> legacy_pre_activation_behavior;
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Function<void()> legacy_cancelled_activation_behavior;
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Bindings::CallbackType* event_handler_attribute(FlyString const& name);
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void set_event_handler_attribute(FlyString const& name, Optional<Bindings::CallbackType>);
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// https://dom.spec.whatwg.org/#eventtarget-activation-behavior
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virtual void run_activation_behavior() { }
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protected:
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EventTarget();
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virtual void ref_event_target() = 0;
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virtual void unref_event_target() = 0;
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void element_event_handler_attribute_changed(FlyString const& local_name, String const& value);
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private:
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Vector<NonnullRefPtr<DOMEventListener>> m_event_listener_list;
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// https://html.spec.whatwg.org/multipage/webappapis.html#event-handler-map
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// 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.
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HashMap<FlyString, HTML::EventHandler> m_event_handler_map;
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enum class IsAttribute {
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No,
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Yes,
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};
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Bindings::CallbackType* get_current_value_of_event_handler(FlyString const& name);
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void activate_event_handler(FlyString const& name, HTML::EventHandler& event_handler, IsAttribute is_attribute);
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void deactivate_event_handler(FlyString const& name);
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JS::ThrowCompletionOr<void> process_event_handler_for_event(FlyString const& name, Event& event);
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};
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}
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