gecko-dev/browser/modules/TransientPrefs.jsm
Kris Maglione e930b89c34 Bug 1514594: Part 3 - Change ChromeUtils.import API.
***
Bug 1514594: Part 3a - Change ChromeUtils.import to return an exports object; not pollute global. r=mccr8

This changes the behavior of ChromeUtils.import() to return an exports object,
rather than a module global, in all cases except when `null` is passed as a
second argument, and changes the default behavior not to pollute the global
scope with the module's exports. Thus, the following code written for the old
model:

  ChromeUtils.import("resource://gre/modules/Services.jsm");

is approximately the same as the following, in the new model:

  var {Services} = ChromeUtils.import("resource://gre/modules/Services.jsm");

Since the two behaviors are mutually incompatible, this patch will land with a
scripted rewrite to update all existing callers to use the new model rather
than the old.
***
Bug 1514594: Part 3b - Mass rewrite all JS code to use the new ChromeUtils.import API. rs=Gijs

This was done using the followng script:

https://bitbucket.org/kmaglione/m-c-rewrites/src/tip/processors/cu-import-exports.jsm
***
Bug 1514594: Part 3c - Update ESLint plugin for ChromeUtils.import API changes. r=Standard8

Differential Revision: https://phabricator.services.mozilla.com/D16747
***
Bug 1514594: Part 3d - Remove/fix hundreds of duplicate imports from sync tests. r=Gijs

Differential Revision: https://phabricator.services.mozilla.com/D16748
***
Bug 1514594: Part 3e - Remove no-op ChromeUtils.import() calls. r=Gijs

Differential Revision: https://phabricator.services.mozilla.com/D16749
***
Bug 1514594: Part 3f.1 - Cleanup various test corner cases after mass rewrite. r=Gijs
***
Bug 1514594: Part 3f.2 - Cleanup various non-test corner cases after mass rewrite. r=Gijs

Differential Revision: https://phabricator.services.mozilla.com/D16750

--HG--
extra : rebase_source : 359574ee3064c90f33bf36c2ebe3159a24cc8895
extra : histedit_source : b93c8f42808b1599f9122d7842d2c0b3e656a594%2C64a3a4e3359dc889e2ab2b49461bab9e27fc10a7
2019-01-17 10:18:31 -08:00

25 lines
747 B
JavaScript

/* 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/. */
"use strict";
var EXPORTED_SYMBOLS = ["TransientPrefs"];
const {Preferences} = ChromeUtils.import("resource://gre/modules/Preferences.jsm");
var prefVisibility = new Map;
/* Use for preferences that should only be visible when they've been modified.
When reset to their default state, they remain visible until restarting the
application. */
var TransientPrefs = {
prefShouldBeVisible(prefName) {
if (Preferences.isSet(prefName))
prefVisibility.set(prefName, true);
return !!prefVisibility.get(prefName);
},
};