mirror of
https://github.com/RGBCube/serenity
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8a5d2be617
These lambdas were marked mutable as they captured a Ptr wrapper class by value, which then only returned const-qualified references to the value they point from the previous const pointer operators. Nothing is actually mutating in the lambdas state here, and now that the Ptr operators don't add extra const qualifiers these can be removed.
110 lines
3.3 KiB
C++
110 lines
3.3 KiB
C++
/*
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* Copyright (c) 2021, Luke Wilde <lukew@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibWeb/Bindings/Intrinsics.h>
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#include <LibWeb/DOM/AbortSignal.h>
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#include <LibWeb/DOM/Document.h>
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#include <LibWeb/DOM/EventDispatcher.h>
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#include <LibWeb/HTML/EventHandler.h>
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namespace Web::DOM {
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JS::NonnullGCPtr<AbortSignal> AbortSignal::construct_impl(JS::Realm& realm)
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{
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return *realm.heap().allocate<AbortSignal>(realm, realm);
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}
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AbortSignal::AbortSignal(JS::Realm& realm)
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: EventTarget(realm)
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{
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set_prototype(&Bindings::cached_web_prototype(realm, "AbortSignal"));
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}
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// https://dom.spec.whatwg.org/#abortsignal-add
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void AbortSignal::add_abort_algorithm(JS::SafeFunction<void()> abort_algorithm)
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{
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// 1. If signal is aborted, then return.
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if (aborted())
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return;
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// 2. Append algorithm to signal’s abort algorithms.
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m_abort_algorithms.append(move(abort_algorithm));
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}
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// https://dom.spec.whatwg.org/#abortsignal-signal-abort
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void AbortSignal::signal_abort(JS::Value reason)
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{
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// 1. If signal is aborted, then return.
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if (aborted())
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return;
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// 2. Set signal’s abort reason to reason if it is given; otherwise to a new "AbortError" DOMException.
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if (!reason.is_undefined())
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m_abort_reason = reason;
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else
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m_abort_reason = WebIDL::AbortError::create(realm(), "Aborted without reason").ptr();
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// 3. For each algorithm in signal’s abort algorithms: run algorithm.
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for (auto& algorithm : m_abort_algorithms)
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algorithm();
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// 4. Empty signal’s abort algorithms.
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m_abort_algorithms.clear();
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// 5. Fire an event named abort at signal.
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dispatch_event(*Event::create(realm(), HTML::EventNames::abort));
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}
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void AbortSignal::set_onabort(WebIDL::CallbackType* event_handler)
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{
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set_event_handler_attribute(HTML::EventNames::abort, event_handler);
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}
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WebIDL::CallbackType* AbortSignal::onabort()
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{
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return event_handler_attribute(HTML::EventNames::abort);
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}
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// https://dom.spec.whatwg.org/#dom-abortsignal-throwifaborted
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JS::ThrowCompletionOr<void> AbortSignal::throw_if_aborted() const
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{
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// The throwIfAborted() method steps are to throw this’s abort reason, if this is aborted.
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if (!aborted())
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return {};
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return JS::throw_completion(m_abort_reason);
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}
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void AbortSignal::visit_edges(JS::Cell::Visitor& visitor)
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{
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Base::visit_edges(visitor);
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visitor.visit(m_abort_reason);
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}
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// https://dom.spec.whatwg.org/#abortsignal-follow
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void AbortSignal::follow(JS::NonnullGCPtr<AbortSignal> parent_signal)
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{
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// A followingSignal (an AbortSignal) is made to follow a parentSignal (an AbortSignal) by running these steps:
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// 1. If followingSignal is aborted, then return.
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if (aborted())
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return;
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// 2. If parentSignal is aborted, then signal abort on followingSignal with parentSignal’s abort reason.
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if (parent_signal->aborted()) {
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signal_abort(parent_signal->reason());
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return;
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}
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// 3. Otherwise, add the following abort steps to parentSignal:
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// NOTE: `this` and `parent_signal` are protected by AbortSignal using JS::SafeFunction.
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parent_signal->add_abort_algorithm([this, parent_signal] {
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// 1. Signal abort on followingSignal with parentSignal’s abort reason.
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signal_abort(parent_signal->reason());
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});
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}
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}
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