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-rw-r--r--dom/webscheduling/WebTaskController.cpp70
1 files changed, 70 insertions, 0 deletions
diff --git a/dom/webscheduling/WebTaskController.cpp b/dom/webscheduling/WebTaskController.cpp
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+++ b/dom/webscheduling/WebTaskController.cpp
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+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:expandtab:shiftwidth=2:tabstop=2:
+ */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "WebTaskController.h"
+#include "TaskSignal.h"
+
+#include "mozilla/dom/TaskPriorityChangeEvent.h"
+
+namespace mozilla::dom {
+
+WebTaskController::WebTaskController(nsIGlobalObject* aGlobal,
+ TaskPriority aPriority)
+ : AbortController(aGlobal) {
+ MOZ_ASSERT(!mSignal);
+ mSignal = new TaskSignal(aGlobal, aPriority);
+}
+
+void WebTaskController::SetPriority(TaskPriority aPriority, ErrorResult& aRv) {
+ // https://wicg.github.io/scheduling-apis/#tasksignal-signal-priority-change
+ RefPtr<TaskSignal> taskSignal = static_cast<TaskSignal*>(mSignal.get());
+ MOZ_ASSERT(taskSignal);
+ if (taskSignal->PriorityChanging()) {
+ aRv.ThrowNotAllowedError("Signal's priority changing is true");
+ return;
+ }
+
+ if (taskSignal->Priority() == aPriority) {
+ return;
+ }
+
+ taskSignal->SetPriorityChanging(true);
+
+ TaskPriority previousPriority = taskSignal->Priority();
+ taskSignal->SetPriority(aPriority);
+
+ taskSignal->RunPriorityChangeAlgorithms();
+
+ TaskPriorityChangeEventInit init;
+ init.mPreviousPriority = previousPriority;
+ RefPtr<TaskPriorityChangeEvent> event = TaskPriorityChangeEvent::Constructor(
+ taskSignal, u"prioritychange"_ns, init);
+
+ event->SetTrusted(true);
+
+ taskSignal->DispatchEvent(*event);
+ taskSignal->SetPriorityChanging(false);
+}
+
+already_AddRefed<WebTaskController> WebTaskController::Constructor(
+ const GlobalObject& aGlobal, const TaskControllerInit& aInit,
+ ErrorResult& aRv) {
+ nsCOMPtr<nsIGlobalObject> global = do_QueryInterface(aGlobal.GetAsSupports());
+ if (!global) {
+ aRv.Throw(NS_ERROR_FAILURE);
+ return nullptr;
+ }
+ RefPtr<WebTaskController> webTaskController =
+ new WebTaskController(global, aInit.mPriority);
+ return webTaskController.forget();
+}
+
+JSObject* WebTaskController::WrapObject(JSContext* aCx,
+ JS::Handle<JSObject*> aGivenProto) {
+ return TaskController_Binding::Wrap(aCx, this, aGivenProto);
+}
+} // namespace mozilla::dom