1 files changed, 54 insertions, 0 deletions
diff --git a/toolkit/components/contentprefs/ContentPrefUtils.sys.mjs b/toolkit/components/contentprefs/ContentPrefUtils.sys.mjs
new file mode 100644
index 0000000000..0a17913d99
--- /dev/null
+++ b/toolkit/components/contentprefs/ContentPrefUtils.sys.mjs
@@ -0,0 +1,54 @@
+/* vim: set ts=2 sw=2 sts=2 et tw=80: */
+/* 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/. */
+
+export function ContentPref(domain, name, value) {
+  this.domain = domain;
+  this.name = name;
+  this.value = value;
+}
+
+ContentPref.prototype = {
+  QueryInterface: ChromeUtils.generateQI(["nsIContentPref"]),
+};
+
+export function cbHandleResult(callback, pref) {
+  safeCallback(callback, "handleResult", [pref]);
+}
+
+export function cbHandleCompletion(callback, reason) {
+  safeCallback(callback, "handleCompletion", [reason]);
+}
+
+export function cbHandleError(callback, nsresult) {
+  safeCallback(callback, "handleError", [nsresult]);
+}
+
+export function safeCallback(callbackObj, methodName, args) {
+  if (!callbackObj || typeof callbackObj[methodName] != "function") {
+    return;
+  }
+  try {
+    callbackObj[methodName].apply(callbackObj, args);
+  } catch (err) {
+    console.error(err);
+  }
+}
+
+export const _methodsCallableFromChild = Object.freeze([
+  ["getByName", ["name", "context", "callback"]],
+  ["getByDomainAndName", ["domain", "name", "context", "callback"]],
+  ["getBySubdomainAndName", ["domain", "name", "context", "callback"]],
+  ["getGlobal", ["name", "context", "callback"]],
+  ["set", ["domain", "name", "value", "context", "callback"]],
+  ["setGlobal", ["name", "value", "context", "callback"]],
+  ["removeByDomainAndName", ["domain", "name", "context", "callback"]],
+  ["removeBySubdomainAndName", ["domain", "name", "context", "callback"]],
+  ["removeGlobal", ["name", "context", "callback"]],
+  ["removeByDomain", ["domain", "context", "callback"]],
+  ["removeBySubdomain", ["domain", "context", "callback"]],
+  ["removeByName", ["name", "context", "callback"]],
+  ["removeAllDomains", ["context", "callback"]],
+  ["removeAllGlobals", ["context", "callback"]],
+]);