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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
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/**
* This module exports the FirefoxViewNotificationManager singleton, which manages the notification state
* for the Firefox View button
*/
const RECENT_TABS_SYNC = "services.sync.lastTabFetch";
const SHOULD_NOTIFY_FOR_TABS = "browser.tabs.firefox-view.notify-for-tabs";
const lazy = {};
import { XPCOMUtils } from "resource://gre/modules/XPCOMUtils.sys.mjs";
ChromeUtils.defineESModuleGetters(lazy, {
BrowserWindowTracker: "resource:///modules/BrowserWindowTracker.sys.mjs",
SyncedTabs: "resource://services-sync/SyncedTabs.sys.mjs",
});
export const FirefoxViewNotificationManager = new (class {
#currentlyShowing;
constructor() {
XPCOMUtils.defineLazyPreferenceGetter(
this,
"lastTabFetch",
RECENT_TABS_SYNC,
0,
() => {
this.handleTabSync();
}
);
XPCOMUtils.defineLazyPreferenceGetter(
this,
"shouldNotifyForTabs",
SHOULD_NOTIFY_FOR_TABS,
false
);
// Need to access the pref variable for the observer to start observing
// See the defineLazyPreferenceGetter function header
this.lastTabFetch;
Services.obs.addObserver(this, "firefoxview-notification-dot-update");
this.#currentlyShowing = false;
}
async handleTabSync() {
if (!this.shouldNotifyForTabs) {
return;
}
let newSyncedTabs = await lazy.SyncedTabs.getRecentTabs(3);
this.#currentlyShowing = this.tabsListChanged(newSyncedTabs);
this.showNotificationDot();
this.syncedTabs = newSyncedTabs;
}
showNotificationDot() {
if (this.#currentlyShowing) {
Services.obs.notifyObservers(
null,
"firefoxview-notification-dot-update",
"true"
);
}
}
observe(sub, topic, data) {
if (topic === "firefoxview-notification-dot-update" && data === "false") {
this.#currentlyShowing = false;
}
}
tabsListChanged(newTabs) {
// The first time the tabs list is changed this.tabs is undefined because we haven't synced yet.
// We don't want to show the badge here because it's not an actual change,
// we are just syncing for the first time.
if (!this.syncedTabs) {
return false;
}
// We loop through all windows to see if any window has currentURI "about:firefoxview" and
// the window is visible because we don't want to show the notification badge in that case
for (let window of lazy.BrowserWindowTracker.orderedWindows) {
// if the url is "about:firefoxview" and the window visible we don't want to show the notification badge
if (
window.FirefoxViewHandler.tab?.selected &&
!window.isFullyOccluded &&
window.windowState !== window.STATE_MINIMIZED
) {
return false;
}
}
if (newTabs.length > this.syncedTabs.length) {
return true;
}
for (let i = 0; i < newTabs.length; i++) {
let newTab = newTabs[i];
let oldTab = this.syncedTabs[i];
if (newTab?.url !== oldTab?.url) {
return true;
}
}
return false;
}
shouldNotificationDotBeShowing() {
return this.#currentlyShowing;
}
})();
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