forked from mirrors/gecko-dev
5042a856cf
Spec: https://wicg.github.io/scheduling-apis/ Differential Revision: https://phabricator.services.mozilla.com/D133494
70 lines
2.3 KiB
C++
70 lines
2.3 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim:expandtab:shiftwidth=2:tabstop=2:
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*/
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "WebTaskController.h"
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#include "TaskSignal.h"
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#include "mozilla/dom/TaskPriorityChangeEvent.h"
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namespace mozilla::dom {
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WebTaskController::WebTaskController(nsIGlobalObject* aGlobal,
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TaskPriority aPriority)
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: AbortController(aGlobal) {
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MOZ_ASSERT(!mSignal);
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mSignal = new TaskSignal(aGlobal, aPriority);
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}
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void WebTaskController::SetPriority(TaskPriority aPriority, ErrorResult& aRv) {
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// https://wicg.github.io/scheduling-apis/#tasksignal-signal-priority-change
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RefPtr<TaskSignal> taskSignal = static_cast<TaskSignal*>(mSignal.get());
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MOZ_ASSERT(taskSignal);
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if (taskSignal->PriorityChanging()) {
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aRv.ThrowNotAllowedError("Signal's priority changing is true");
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return;
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}
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if (taskSignal->Priority() == aPriority) {
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return;
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}
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taskSignal->SetPriorityChanging(true);
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TaskPriority previousPriority = taskSignal->Priority();
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taskSignal->SetPriority(aPriority);
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taskSignal->RunPriorityChangeAlgorithms();
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TaskPriorityChangeEventInit init;
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init.mPreviousPriority = previousPriority;
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RefPtr<TaskPriorityChangeEvent> event = TaskPriorityChangeEvent::Constructor(
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taskSignal, u"prioritychange"_ns, init);
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event->SetTrusted(true);
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taskSignal->DispatchEvent(*event);
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taskSignal->SetPriorityChanging(false);
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}
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already_AddRefed<WebTaskController> WebTaskController::Constructor(
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const GlobalObject& aGlobal, const TaskControllerInit& aInit,
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ErrorResult& aRv) {
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nsCOMPtr<nsIGlobalObject> global = do_QueryInterface(aGlobal.GetAsSupports());
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if (!global) {
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aRv.Throw(NS_ERROR_FAILURE);
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return nullptr;
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}
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RefPtr<WebTaskController> webTaskController =
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new WebTaskController(global, aInit.mPriority);
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return webTaskController.forget();
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}
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JSObject* WebTaskController::WrapObject(JSContext* aCx,
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JS::Handle<JSObject*> aGivenProto) {
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return TaskController_Binding::Wrap(aCx, this, aGivenProto);
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}
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} // namespace mozilla::dom
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