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-rw-r--r--toolkit/modules/AboutPagesUtils.sys.mjs34
1 files changed, 34 insertions, 0 deletions
diff --git a/toolkit/modules/AboutPagesUtils.sys.mjs b/toolkit/modules/AboutPagesUtils.sys.mjs
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+++ b/toolkit/modules/AboutPagesUtils.sys.mjs
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+/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*-
+ * vim: sw=2 ts=2 sts=2 expandtab
+ * 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/. */
+
+import { XPCOMUtils } from "resource://gre/modules/XPCOMUtils.sys.mjs";
+
+export const AboutPagesUtils = {};
+
+XPCOMUtils.defineLazyGetter(AboutPagesUtils, "visibleAboutUrls", () => {
+ const urls = [];
+ const rx = /@mozilla.org\/network\/protocol\/about;1\?what\=(.*)$/;
+ for (const cid in Cc) {
+ const result = cid.match(rx);
+ if (!result) {
+ continue;
+ }
+ const [, aboutType] = result;
+ try {
+ const am = Cc[cid].getService(Ci.nsIAboutModule);
+ const uri = Services.io.newURI(`about:${aboutType}`);
+ const flags = am.getURIFlags(uri);
+ if (!(flags & Ci.nsIAboutModule.HIDE_FROM_ABOUTABOUT)) {
+ urls.push(`about:${aboutType}`);
+ }
+ } catch (e) {
+ // getService() might have thrown if the component doesn't actually
+ // implement nsIAboutModule
+ }
+ }
+ urls.sort();
+ return urls;
+});