tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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SystemTickFeed.sys.mjs (1819B)

      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 http://mozilla.org/MPL/2.0/. */
      4 
      5 import { actionTypes as at } from "resource://newtab/common/Actions.mjs";
      6 
      7 const lazy = {};
      8 
      9 ChromeUtils.defineESModuleGetters(lazy, {
     10  clearInterval: "resource://gre/modules/Timer.sys.mjs",
     11  setInterval: "resource://gre/modules/Timer.sys.mjs",
     12 });
     13 
     14 // Frequency at which SYSTEM_TICK events are fired
     15 export const SYSTEM_TICK_INTERVAL = 5 * 60 * 1000;
     16 
     17 export class SystemTickFeed {
     18  init() {
     19    this._idleService = Cc["@mozilla.org/widget/useridleservice;1"].getService(
     20      Ci.nsIUserIdleService
     21    );
     22    this._hasObserver = false;
     23    this.setTimer();
     24  }
     25 
     26  setTimer() {
     27    this.intervalId = lazy.setInterval(() => {
     28      if (this._idleService.idleTime > SYSTEM_TICK_INTERVAL) {
     29        this.cancelTimer();
     30        Services.obs.addObserver(this, "user-interaction-active");
     31        this._hasObserver = true;
     32        return;
     33      }
     34      this.dispatchTick();
     35    }, SYSTEM_TICK_INTERVAL);
     36  }
     37 
     38  cancelTimer() {
     39    lazy.clearInterval(this.intervalId);
     40    this.intervalId = null;
     41  }
     42 
     43  observe() {
     44    this.dispatchTick();
     45    Services.obs.removeObserver(this, "user-interaction-active");
     46    this._hasObserver = false;
     47    this.setTimer();
     48  }
     49 
     50  dispatchTick() {
     51    ChromeUtils.idleDispatch(() =>
     52      this.store.dispatch({ type: at.SYSTEM_TICK })
     53    );
     54  }
     55 
     56  onAction(action) {
     57    switch (action.type) {
     58      case at.INIT:
     59        this.init();
     60        break;
     61      case at.UNINIT:
     62        this.cancelTimer();
     63        if (this._hasObserver) {
     64          Services.obs.removeObserver(this, "user-interaction-active");
     65          this._hasObserver = false;
     66        }
     67        break;
     68    }
     69  }
     70 }