dom/webidl/WebTaskScheduling.webidl

   1 /* This Source Code Form is subject to the terms of the Mozilla Public
   2  * License, v. 2.0. If a copy of the MPL was not distributed with this
   3  * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
   4
   5 enum TaskPriority {
   6   "user-blocking",
   7   "user-visible",
   8   "background"
   9 };
  10
  11 [Exposed=(Window, Worker), Pref="dom.enable_web_task_scheduling"]
  12 interface TaskSignal : AbortSignal {
  13   readonly attribute TaskPriority priority;
  14
  15   attribute EventHandler onprioritychange;
  16 };
  17
  18
  19 dictionary SchedulerPostTaskOptions {
  20   AbortSignal signal;
  21   TaskPriority priority;
  22   [EnforceRange] unsigned long long delay = 0;
  23 };
  24
  25 callback SchedulerPostTaskCallback = any ();
  26
  27 [Exposed=(Window, Worker), Pref="dom.enable_web_task_scheduling"]
  28 interface Scheduler {
  29   [UseCounter]
  30   Promise<any> postTask(
  31     SchedulerPostTaskCallback callback,
  32     optional SchedulerPostTaskOptions options = {}
  33   );
  34 };
  35
  36 dictionary TaskControllerInit {
  37   TaskPriority priority = "user-visible";
  38 };
  39
  40 [Exposed=(Window,Worker), Pref="dom.enable_web_task_scheduling"]
  41 interface TaskController : AbortController {
  42   [Throws]
  43   constructor(optional TaskControllerInit init = {});
  44
  45   [Throws]
  46   undefined setPriority(TaskPriority priority);
  47 };