1/* vim: set ts=2 sw=2 sts=2 et tw=80: */
2/* This Source Code Form is subject to the terms of the Mozilla Public
3 * License, v. 2.0. If a copy of the MPL was not distributed with this
4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
5"use strict";
6
7var EXPORTED_SYMBOLS = ["AboutNewTabChild"];
8
9const { Services } = ChromeUtils.import("resource://gre/modules/Services.jsm");
10const { XPCOMUtils } = ChromeUtils.import(
11  "resource://gre/modules/XPCOMUtils.jsm"
12);
13const { AppConstants } = ChromeUtils.import(
14  "resource://gre/modules/AppConstants.jsm"
15);
16
17const { PrivateBrowsingUtils } = ChromeUtils.import(
18  "resource://gre/modules/PrivateBrowsingUtils.jsm"
19);
20
21XPCOMUtils.defineLazyModuleGetters(this, {
22  NimbusFeatures: "resource://nimbus/ExperimentAPI.jsm",
23});
24
25XPCOMUtils.defineLazyPreferenceGetter(
26  this,
27  "ACTIVITY_STREAM_DEBUG",
28  "browser.newtabpage.activity-stream.debug",
29  false
30);
31
32class AboutNewTabChild extends JSWindowActorChild {
33  handleEvent(event) {
34    if (event.type == "DOMContentLoaded") {
35      // If the separate about:welcome page is enabled, we can skip all of this,
36      // since that mode doesn't load any of the Activity Stream bits.
37      if (
38        NimbusFeatures.aboutwelcome.isEnabled({ defaultValue: true }) &&
39        this.contentWindow.location.pathname.includes("welcome")
40      ) {
41        return;
42      }
43
44      const debug = !AppConstants.RELEASE_OR_BETA && ACTIVITY_STREAM_DEBUG;
45      const debugString = debug ? "-dev" : "";
46
47      // This list must match any similar ones in render-activity-stream-html.js.
48      const scripts = [
49        "chrome://browser/content/contentSearchUI.js",
50        "chrome://browser/content/contentSearchHandoffUI.js",
51        "chrome://browser/content/contentTheme.js",
52        `resource://activity-stream/vendor/react${debugString}.js`,
53        `resource://activity-stream/vendor/react-dom${debugString}.js`,
54        "resource://activity-stream/vendor/prop-types.js",
55        "resource://activity-stream/vendor/react-transition-group.js",
56        "resource://activity-stream/vendor/redux.js",
57        "resource://activity-stream/vendor/react-redux.js",
58        "resource://activity-stream/data/content/activity-stream.bundle.js",
59        "resource://activity-stream/data/content/newtab-render.js",
60      ];
61
62      for (let script of scripts) {
63        Services.scriptloader.loadSubScript(script, this.contentWindow);
64      }
65    } else if (
66      (event.type == "pageshow" || event.type == "visibilitychange") &&
67      // The default browser notification shouldn't be shown on about:welcome
68      // since we don't want to distract from the onboarding wizard.
69      !this.contentWindow.location.pathname.includes("welcome")
70    ) {
71      // Don't show the notification in non-permanent private windows
72      // since it is expected to have very little opt-in here.
73      let contentWindowPrivate = PrivateBrowsingUtils.isContentWindowPrivate(
74        this.contentWindow
75      );
76      if (
77        this.document.visibilityState == "visible" &&
78        (!contentWindowPrivate ||
79          (contentWindowPrivate &&
80            PrivateBrowsingUtils.permanentPrivateBrowsing))
81      ) {
82        this.sendAsyncMessage("AboutNewTabVisible");
83
84        // Note: newtab feature info is currently being loaded in PrefsFeed.jsm,
85        // But we're recording exposure events here.
86        NimbusFeatures.newtab.recordExposureEvent({ once: true });
87      }
88    }
89  }
90}
91