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- /*
- * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
- *
- * SPDX-License-Identifier: BSD-2-Clause
- */
- #include <LibWeb/Bindings/ScriptExecutionContext.h>
- #include <LibWeb/DOM/Event.h>
- #include <LibWeb/DOM/EventListener.h>
- #include <LibWeb/DOM/EventTarget.h>
- namespace Web::DOM {
- EventTarget::EventTarget(Bindings::ScriptExecutionContext& script_execution_context)
- : m_script_execution_context(&script_execution_context)
- {
- }
- EventTarget::~EventTarget()
- {
- }
- // https://dom.spec.whatwg.org/#add-an-event-listener
- void EventTarget::add_event_listener(const FlyString& event_name, RefPtr<EventListener> listener)
- {
- if (listener.is_null())
- return;
- auto existing_listener = m_listeners.first_matching([&](auto& entry) {
- return entry.listener->type() == event_name && &entry.listener->function() == &listener->function() && entry.listener->capture() == listener->capture();
- });
- if (existing_listener.has_value())
- return;
- listener->set_type(event_name);
- m_listeners.append({ event_name, listener.release_nonnull() });
- }
- // https://dom.spec.whatwg.org/#remove-an-event-listener
- void EventTarget::remove_event_listener(const FlyString& event_name, RefPtr<EventListener> listener)
- {
- if (listener.is_null())
- return;
- m_listeners.remove_first_matching([&](auto& entry) {
- auto matches = entry.event_name == event_name && &entry.listener->function() == &listener->function() && entry.listener->capture() == listener->capture();
- if (matches)
- entry.listener->set_removed(true);
- return matches;
- });
- }
- void EventTarget::remove_from_event_listener_list(NonnullRefPtr<EventListener> listener)
- {
- m_listeners.remove_first_matching([&](auto& entry) {
- return entry.listener->type() == listener->type() && &entry.listener->function() == &listener->function() && entry.listener->capture() == listener->capture();
- });
- }
- // https://dom.spec.whatwg.org/#dom-eventtarget-dispatchevent
- ExceptionOr<bool> EventTarget::dispatch_event_binding(NonnullRefPtr<Event> event)
- {
- if (event->dispatched())
- return DOM::InvalidStateError::create("The event is already being dispatched.");
- if (!event->initialized())
- return DOM::InvalidStateError::create("Cannot dispatch an uninitialized event.");
- event->set_is_trusted(false);
- return dispatch_event(event);
- }
- }
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