Bug 1852051 - Remove the Search Bar from the toolbar for users who haven't used it in 120 days. r=dao,Gijs

Differential Revision: https://phabricator.services.mozilla.com/D195001

browser/app/profile/firefox.js

@@ -742,6 +742,10 @@ pref("browser.search.serpEventTelemetry.enabled", true);
 // Enables search SERP telemetry page categorization.
 pref("browser.search.serpEventTelemetryCategorization.enabled", false);
 
+// Search Bar removal from the toolbar for users who haven’t used it in 120
+// days
+pref("browser.search.widget.removeAfterDaysUnused", 120);
+
 // Enable new experimental shopping features. This is solely intended as a
 // rollout/"emergency stop" button - it will go away once the feature has
 // rolled out. There will be separate controls for user opt-in/opt-out.

browser/components/customizableui/SearchWidgetTracker.sys.mjs

@@ -31,6 +31,7 @@ export const SearchWidgetTracker = {
     Services.prefs.addObserver(PREF_NAME, () =>
       this.syncWidgetWithPreference()
     );
+    this._updateSearchBarVisibilityBasedOnUsage();
   },
 
   onWidgetAdded(widgetId, area) {
@@ -94,6 +95,23 @@ export const SearchWidgetTracker = {
     }
   },
 
+  _updateSearchBarVisibilityBasedOnUsage() {
+    let searchBarLastUsed = Services.prefs.getStringPref(
+      "browser.search.widget.lastUsed",
+      ""
+    );
+    if (searchBarLastUsed) {
+      const removeAfterDaysUnused = Services.prefs.getIntPref(
+        "browser.search.widget.removeAfterDaysUnused"
+      );
+      let saerchBarUnusedThreshold =
+        removeAfterDaysUnused * 24 * 60 * 60 * 1000;
+      if (new Date() - new Date(searchBarLastUsed) > saerchBarUnusedThreshold) {
+        Services.prefs.setBoolPref("browser.search.widget.inNavBar", false);
+      }
+    }
+  },
+
   removePersistedWidths() {
     Services.xulStore.removeValue(
       AppConstants.BROWSER_CHROME_URL,

browser/components/customizableui/test/browser.toml

@@ -341,6 +341,8 @@ skip-if = ["(verify && debug && (os == 'linux' || os == 'mac'))"]
 
 ["browser_screenshot_button_disabled.js"]
 
+["browser_searchbar_removal.js"]
+
 ["browser_sidebar_toggle.js"]
 skip-if = ["verify"]
 

browser/components/customizableui/test/browser_searchbar_removal.js

@@ -0,0 +1,36 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+const { SearchWidgetTracker } = ChromeUtils.importESModule(
+  "resource:///modules/SearchWidgetTracker.sys.mjs"
+);
+
+const SEARCH_BAR_PREF_NAME = "browser.search.widget.inNavBar";
+const SEARCH_BAR_LAST_USED_PREF_NAME = "browser.search.widget.lastUsed";
+
+add_task(async function checkSearchBarPresent() {
+  Services.prefs.setBoolPref(SEARCH_BAR_PREF_NAME, true);
+  Services.prefs.setStringPref(
+    SEARCH_BAR_LAST_USED_PREF_NAME,
+    new Date("2022").toISOString()
+  );
+
+  Assert.ok(
+    BrowserSearch.searchBar,
+    "Search bar should be present in the Nav bar"
+  );
+  SearchWidgetTracker._updateSearchBarVisibilityBasedOnUsage();
+  Assert.ok(
+    !BrowserSearch.searchBar,
+    "Search bar should not be present in the Nav bar"
+  );
+  Assert.equal(
+    Services.prefs.getBoolPref(SEARCH_BAR_PREF_NAME),
+    false,
+    "Should remove the search bar"
+  );
+  Services.prefs.clearUserPref(SEARCH_BAR_LAST_USED_PREF_NAME);
+  Services.prefs.clearUserPref(SEARCH_BAR_PREF_NAME);
+});