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authorFlorian Dold <florian.dold@gmail.com>2020-08-03 13:00:48 +0530
committerFlorian Dold <florian.dold@gmail.com>2020-08-03 13:01:05 +0530
commitffd2a62c3f7df94365980302fef3bc3376b48182 (patch)
tree270af6f16b4cc7f5da2afdba55c8bc9dbea5eca5 /packages/taler-wallet-webextension/src/compat.ts
parentaa481e42675fb7c4dcbbeec0ba1c61e1953b9596 (diff)
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modularize repo, use pnpm, improve typechecking
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diff --git a/packages/taler-wallet-webextension/src/compat.ts b/packages/taler-wallet-webextension/src/compat.ts
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+/*
+ This file is part of TALER
+ (C) 2017 INRIA
+
+ TALER is free software; you can redistribute it and/or modify it under the
+ terms of the GNU General Public License as published by the Free Software
+ Foundation; either version 3, or (at your option) any later version.
+
+ TALER is distributed in the hope that it will be useful, but WITHOUT ANY
+ WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+ A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License along with
+ TALER; see the file COPYING. If not, see <http://www.gnu.org/licenses/>
+ */
+
+/**
+ * Compatibility helpers needed for browsers that don't implement
+ * WebExtension APIs consistently.
+ */
+
+export function isFirefox(): boolean {
+ const rt = chrome.runtime as any;
+ if (typeof rt.getBrowserInfo === "function") {
+ return true;
+ }
+ return false;
+}
+
+/**
+ * Check if we are running under nodejs.
+ */
+export function isNode(): boolean {
+ return typeof process !== "undefined" && process.release.name === "node";
+}
+
+/**
+ * Compatibility API that works on multiple browsers.
+ */
+export interface CrossBrowserPermissionsApi {
+ contains(
+ permissions: chrome.permissions.Permissions,
+ callback: (result: boolean) => void,
+ ): void;
+
+ addPermissionsListener(
+ callback: (permissions: chrome.permissions.Permissions) => void,
+ ): void;
+
+ request(
+ permissions: chrome.permissions.Permissions,
+ callback?: (granted: boolean) => void,
+ ): void;
+
+ remove(
+ permissions: chrome.permissions.Permissions,
+ callback?: (removed: boolean) => void,
+ ): void;
+}
+
+export function getPermissionsApi(): CrossBrowserPermissionsApi {
+ const myBrowser = (globalThis as any).browser;
+ if (
+ typeof myBrowser === "object" &&
+ typeof myBrowser.permissions === "object"
+ ) {
+ return {
+ addPermissionsListener: () => {
+ // Not supported yet.
+ },
+ contains: myBrowser.permissions.contains,
+ request: myBrowser.permissions.request,
+ remove: myBrowser.permissions.remove,
+ };
+ } else {
+ return {
+ addPermissionsListener: chrome.permissions.onAdded.addListener.bind(
+ chrome.permissions.onAdded,
+ ),
+ contains: chrome.permissions.contains,
+ request: chrome.permissions.request,
+ remove: chrome.permissions.remove,
+ };
+ }
+}