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/* 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
import { Module } from "chrome://remote/content/shared/messagehandler/Module.sys.mjs";
const TEST_PREF = "remote.messagehandler.test.pref";
class EventOnPrefChangeModule extends Module {
constructor(messageHandler) {
super(messageHandler);
Services.prefs.addObserver(TEST_PREF, this.#onPreferenceUpdated);
}
destroy() {
Services.prefs.removeObserver(TEST_PREF, this.#onPreferenceUpdated);
}
#onPreferenceUpdated = () => {
this.emitEvent("preference-changed");
};
/**
* Commands
*/
ping() {
// We only use this command to force creating the module.
return 1;
}
}
export const eventonprefchange = EventOnPrefChangeModule;