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ladybird/Userland/Libraries/LibWeb/DOM/AbortSignal.h

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LibWeb: Add initial support for AbortController and AbortSignal The DOM specification says that the primary use case for these is to give Promises abort semantics. It is also a prerequisite for Fetch, as it is used to make Fetch abortable. a
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/*
* Copyright (c) 2021, Luke Wilde <lukew@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/RefCounted.h>
#include <AK/Weakable.h>
LibWeb: Use JS::HeapFunction for AbortSignal callback
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#include <LibJS/Heap/HeapFunction.h>
LibWeb: Add initial support for AbortController and AbortSignal The DOM specification says that the primary use case for these is to give Promises abort semantics. It is also a prerequisite for Fetch, as it is used to make Fetch abortable. a
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#include <LibWeb/DOM/EventTarget.h>
#include <LibWeb/Forward.h>
namespace Web::DOM {
// https://dom.spec.whatwg.org/#abortsignal
LibWeb+LibJS: Make the EventTarget hierarchy (incl. DOM) GC-allocated This is a monster patch that turns all EventTargets into GC-allocated PlatformObjects. Their C++ wrapper classes are removed, and the LibJS garbage collector is now responsible for their lifetimes. There's a fair amount of hacks and band-aids in this patch, and we'll have a lot of cleanup to do after this.
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class AbortSignal final : public EventTarget {
WEB_PLATFORM_OBJECT(AbortSignal, EventTarget);
LibWeb: Put most LibWeb GC objects in type-specific heap blocks With this change, we now have ~1200 CellAllocators across both LibJS and LibWeb in a normal WebContent instance. This gives us a minimum heap size of 4.7 MiB in the scenario where we only have one cell allocated per type. Of course, in practice there will be many more of each type, so the effective overhead is quite a bit smaller than that in practice. I left a few types unconverted to this mechanism because I got tired of doing this. :^)
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JS_DECLARE_ALLOCATOR(AbortSignal);
LibWeb: Add initial support for AbortController and AbortSignal The DOM specification says that the primary use case for these is to give Promises abort semantics. It is also a prerequisite for Fetch, as it is used to make Fetch abortable. a
2021-09-02 02:12:49 +01:00
LibWeb+LibJS: Make the EventTarget hierarchy (incl. DOM) GC-allocated This is a monster patch that turns all EventTargets into GC-allocated PlatformObjects. Their C++ wrapper classes are removed, and the LibJS garbage collector is now responsible for their lifetimes. There's a fair amount of hacks and band-aids in this patch, and we'll have a lot of cleanup to do after this.
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public:
LibWeb: Make factory method of DOM::AbortSignal fallible
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static WebIDL::ExceptionOr<JS::NonnullGCPtr<AbortSignal>> construct_impl(JS::Realm&);
LibWeb: Add initial support for AbortController and AbortSignal The DOM specification says that the primary use case for these is to give Promises abort semantics. It is also a prerequisite for Fetch, as it is used to make Fetch abortable. a
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Libraries: Use default constructors/destructors in LibWeb https://isocpp.github.io/CppCoreGuidelines/CppCoreGuidelines#cother-other-default-operation-rules "The compiler is more likely to get the default semantics right and you cannot implement these functions better than the compiler."
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virtual ~AbortSignal() override = default;
LibWeb: Add initial support for AbortController and AbortSignal The DOM specification says that the primary use case for these is to give Promises abort semantics. It is also a prerequisite for Fetch, as it is used to make Fetch abortable. a
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LibWeb: Use JS::HeapFunction for AbortSignal callback
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void add_abort_algorithm(Function<void()>);
LibWeb: Add initial support for AbortController and AbortSignal The DOM specification says that the primary use case for these is to give Promises abort semantics. It is also a prerequisite for Fetch, as it is used to make Fetch abortable. a
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// https://dom.spec.whatwg.org/#dom-abortsignal-aborted
LibWeb: Add support for AbortSignal.reason
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// An AbortSignal object is aborted when its abort reason is not undefined.
bool aborted() const { return !m_abort_reason.is_undefined(); }
LibWeb: Add initial support for AbortController and AbortSignal The DOM specification says that the primary use case for these is to give Promises abort semantics. It is also a prerequisite for Fetch, as it is used to make Fetch abortable. a
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LibWeb: Add support for AbortSignal.reason
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void signal_abort(JS::Value reason);
LibWeb: Add initial support for AbortController and AbortSignal The DOM specification says that the primary use case for these is to give Promises abort semantics. It is also a prerequisite for Fetch, as it is used to make Fetch abortable. a
2021-09-02 02:12:49 +01:00
LibWeb: Move CallbackType from Bindings/ to WebIDL/ Let's stop putting generic types and AOs from the Web IDL spec into the Bindings namespace and directory in LibWeb, and instead follow our usual naming rules of 'directory = namespace = spec name'. The IDL namespace is already used by LibIDL, so Web::WebIDL seems like a good choice.
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void set_onabort(WebIDL::CallbackType*);
WebIDL::CallbackType* onabort();
LibWeb: Implement AbortSignal.onabort
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LibWeb: Add support for AbortSignal.reason
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// https://dom.spec.whatwg.org/#dom-abortsignal-reason
JS::Value reason() const { return m_abort_reason; }
LibWeb: Implement AbortSignal.throwIfAborted See: https://github.com/whatwg/dom/commit/cfe2f1e
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JS::ThrowCompletionOr<void> throw_if_aborted() const;
LibWeb: Add the ability for an AbortSignal to follow another Following another abort signal basically means to make an abort signal abort when another abort signal is aborted, unless the following signal is already aborted.
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void follow(JS::NonnullGCPtr<AbortSignal> parent_signal);
LibWeb: Add initial support for AbortController and AbortSignal The DOM specification says that the primary use case for these is to give Promises abort semantics. It is also a prerequisite for Fetch, as it is used to make Fetch abortable. a
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private:
LibWeb: Remove unecessary dependence on Window from DOM and WebIDL These classes only needed Window to get at its realm. Pass a realm directly to construct DOM and WebIDL classes. This change importantly removes the guarantee that a Document will always have a non-null Window object. Only Documents created by a BrowsingContext will have a non-null Window object. Documents created by for example, DocumentFragment, will not have a Window (soon). This incremental commit leaves some workarounds in place to keep other parts of the code building.
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explicit AbortSignal(JS::Realm&);
LibWeb+LibJS: Make the EventTarget hierarchy (incl. DOM) GC-allocated This is a monster patch that turns all EventTargets into GC-allocated PlatformObjects. Their C++ wrapper classes are removed, and the LibJS garbage collector is now responsible for their lifetimes. There's a fair amount of hacks and band-aids in this patch, and we'll have a lot of cleanup to do after this.
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LibJS: Make Cell::initialize() return void Stop worrying about tiny OOMs. Work towards #20405
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virtual void initialize(JS::Realm&) override;
LibWeb+LibJS: Make the EventTarget hierarchy (incl. DOM) GC-allocated This is a monster patch that turns all EventTargets into GC-allocated PlatformObjects. Their C++ wrapper classes are removed, and the LibJS garbage collector is now responsible for their lifetimes. There's a fair amount of hacks and band-aids in this patch, and we'll have a lot of cleanup to do after this.
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virtual void visit_edges(JS::Cell::Visitor&) override;
LibWeb: Add initial support for AbortController and AbortSignal The DOM specification says that the primary use case for these is to give Promises abort semantics. It is also a prerequisite for Fetch, as it is used to make Fetch abortable. a
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LibWeb: Add support for AbortSignal.reason
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// https://dom.spec.whatwg.org/#abortsignal-abort-reason
// An AbortSignal object has an associated abort reason, which is a JavaScript value. It is undefined unless specified otherwise.
JS::Value m_abort_reason { JS::js_undefined() };
LibWeb: Add initial support for AbortController and AbortSignal The DOM specification says that the primary use case for these is to give Promises abort semantics. It is also a prerequisite for Fetch, as it is used to make Fetch abortable. a
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// https://dom.spec.whatwg.org/#abortsignal-abort-algorithms
// FIXME: This should be a set.
LibWeb: Use JS::HeapFunction for AbortSignal callback
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Vector<JS::NonnullGCPtr<JS::HeapFunction<void()>>> m_abort_algorithms;
LibWeb: Add initial support for AbortController and AbortSignal The DOM specification says that the primary use case for these is to give Promises abort semantics. It is also a prerequisite for Fetch, as it is used to make Fetch abortable. a
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};
}
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