84 lines
2.3 KiB
JavaScript
84 lines
2.3 KiB
JavaScript
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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const lazy = {};
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ChromeUtils.defineESModuleGetters(lazy, {
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BackupService: "resource:///modules/backup/BackupService.sys.mjs",
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});
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/**
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* A JSWindowActor that is responsible for marshalling information between
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* the BackupService singleton and any registered UI widgets that need to
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* represent data from that service.
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*/
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export class BackupUIParent extends JSWindowActorParent {
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/**
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* A reference to the BackupService singleton instance.
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*
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* @type {BackupService}
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*/
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#bs;
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/**
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* Create a BackupUIParent instance. If a BackupUIParent is instantiated
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* before BrowserGlue has a chance to initialize the BackupService, this
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* constructor will cause it to initialize first.
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*/
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constructor() {
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super();
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// We use init() rather than get(), since it's possible to load
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// about:preferences before the service has had a chance to init itself
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// via BrowserGlue.
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this.#bs = lazy.BackupService.init();
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}
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/**
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* Called once the BackupUIParent/BackupUIChild pair have been connected.
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*/
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actorCreated() {
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this.#bs.addEventListener("BackupService:StateUpdate", this);
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}
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/**
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* Called once the BackupUIParent/BackupUIChild pair have been disconnected.
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*/
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didDestroy() {
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this.#bs.removeEventListener("BackupService:StateUpdate", this);
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}
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/**
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* Handles events fired by the BackupService.
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*
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* @param {Event} event
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* The event that the BackupService emitted.
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*/
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handleEvent(event) {
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if (event.type == "BackupService:StateUpdate") {
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this.sendState();
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}
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}
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/**
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* Handles messages sent by BackupUIChild.
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*
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* @param {ReceiveMessageArgument} message
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* The message received from the BackupUIChild.
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*/
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receiveMessage(message) {
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if (message.name == "RequestState") {
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this.sendState();
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} else if (message.name == "ScheduledBackupsConfirm") {
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this.#bs.setScheduledBackups(true);
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}
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}
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/**
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* Sends the StateUpdate message to the BackupUIChild, along with the most
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* recent state object from BackupService.
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*/
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sendState() {
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this.sendAsyncMessage("StateUpdate", { state: this.#bs.state });
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}
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}
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