Merging upstream version 127.0.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

25 files changed, 806 insertions, 1080 deletions

diff --git a/browser/components/firefoxview/HistoryController.mjs b/browser/components/firefoxview/HistoryController.mjs
deleted file mode 100644
index d2bda5cec2..0000000000
--- a/browser/components/firefoxview/HistoryController.mjs
+++ /dev/null
@@ -1,188 +0,0 @@
-/* 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/. */
-
-const lazy = {};
-
-ChromeUtils.defineESModuleGetters(lazy, {
-  FirefoxViewPlacesQuery:
-    "resource:///modules/firefox-view-places-query.sys.mjs",
-  PlacesUtils: "resource://gre/modules/PlacesUtils.sys.mjs",
-});
-
-let XPCOMUtils = ChromeUtils.importESModule(
-  "resource://gre/modules/XPCOMUtils.sys.mjs"
-).XPCOMUtils;
-
-XPCOMUtils.defineLazyPreferenceGetter(
-  lazy,
-  "maxRowsPref",
-  "browser.firefox-view.max-history-rows",
-  -1
-);
-
-const HISTORY_MAP_L10N_IDS = {
-  sidebar: {
-    "history-date-today": "sidebar-history-date-today",
-    "history-date-yesterday": "sidebar-history-date-yesterday",
-    "history-date-this-month": "sidebar-history-date-this-month",
-    "history-date-prev-month": "sidebar-history-date-prev-month",
-  },
-  firefoxview: {
-    "history-date-today": "firefoxview-history-date-today",
-    "history-date-yesterday": "firefoxview-history-date-yesterday",
-    "history-date-this-month": "firefoxview-history-date-this-month",
-    "history-date-prev-month": "firefoxview-history-date-prev-month",
-  },
-};
-
-export class HistoryController {
-  host;
-  allHistoryItems;
-  historyMapByDate;
-  historyMapBySite;
-  searchQuery;
-  searchResults;
-  sortOption;
-
-  constructor(host, options) {
-    this.allHistoryItems = new Map();
-    this.historyMapByDate = [];
-    this.historyMapBySite = [];
-    this.placesQuery = new lazy.FirefoxViewPlacesQuery();
-    this.searchQuery = "";
-    this.searchResults = null;
-    this.sortOption = "date";
-    this.searchResultsLimit = options?.searchResultsLimit || 300;
-    this.component = HISTORY_MAP_L10N_IDS?.[options?.component]
-      ? options?.component
-      : "firefoxview";
-    this.host = host;
-
-    host.addController(this);
-  }
-
-  async hostConnected() {
-    this.placesQuery.observeHistory(data => this.updateAllHistoryItems(data));
-    await this.updateHistoryData();
-    this.createHistoryMaps();
-  }
-
-  hostDisconnected() {
-    this.placesQuery.close();
-  }
-
-  deleteFromHistory() {
-    lazy.PlacesUtils.history.remove(this.host.triggerNode.url);
-  }
-
-  async onSearchQuery(e) {
-    this.searchQuery = e.detail.query;
-    await this.updateSearchResults();
-    this.host.requestUpdate();
-  }
-
-  async onChangeSortOption(e) {
-    this.sortOption = e.target.value;
-    await this.updateHistoryData();
-    await this.updateSearchResults();
-    this.host.requestUpdate();
-  }
-
-  async updateHistoryData() {
-    this.allHistoryItems = await this.placesQuery.getHistory({
-      daysOld: 60,
-      limit: lazy.maxRowsPref,
-      sortBy: this.sortOption,
-    });
-  }
-
-  async updateAllHistoryItems(allHistoryItems) {
-    if (allHistoryItems) {
-      this.allHistoryItems = allHistoryItems;
-    } else {
-      await this.updateHistoryData();
-    }
-    this.resetHistoryMaps();
-    this.host.requestUpdate();
-    await this.updateSearchResults();
-  }
-
-  async updateSearchResults() {
-    if (this.searchQuery) {
-      try {
-        this.searchResults = await this.placesQuery.searchHistory(
-          this.searchQuery,
-          this.searchResultsLimit
-        );
-      } catch (e) {
-        // Connection interrupted, ignore.
-      }
-    } else {
-      this.searchResults = null;
-    }
-  }
-
-  resetHistoryMaps() {
-    this.historyMapByDate = [];
-    this.historyMapBySite = [];
-  }
-
-  createHistoryMaps() {
-    if (!this.historyMapByDate.length) {
-      const {
-        visitsFromToday,
-        visitsFromYesterday,
-        visitsByDay,
-        visitsByMonth,
-      } = this.placesQuery;
-
-      // Add visits from today and yesterday.
-      if (visitsFromToday.length) {
-        this.historyMapByDate.push({
-          l10nId: HISTORY_MAP_L10N_IDS[this.component]["history-date-today"],
-          items: visitsFromToday,
-        });
-      }
-      if (visitsFromYesterday.length) {
-        this.historyMapByDate.push({
-          l10nId:
-            HISTORY_MAP_L10N_IDS[this.component]["history-date-yesterday"],
-          items: visitsFromYesterday,
-        });
-      }
-
-      // Add visits from this month, grouped by day.
-      visitsByDay.forEach(visits => {
-        this.historyMapByDate.push({
-          l10nId:
-            HISTORY_MAP_L10N_IDS[this.component]["history-date-this-month"],
-          items: visits,
-        });
-      });
-
-      // Add visits from previous months, grouped by month.
-      visitsByMonth.forEach(visits => {
-        this.historyMapByDate.push({
-          l10nId:
-            HISTORY_MAP_L10N_IDS[this.component]["history-date-prev-month"],
-          items: visits,
-        });
-      });
-    } else if (
-      this.sortOption === "site" &&
-      !this.historyMapBySite.length &&
-      this.component === "firefoxview"
-    ) {
-      this.historyMapBySite = Array.from(
-        this.allHistoryItems.entries(),
-        ([domain, items]) => ({
-          domain,
-          items,
-          l10nId: domain ? null : "firefoxview-history-site-localhost",
-        })
-      ).sort((a, b) => a.domain.localeCompare(b.domain));
-    }
-    this.host.requestUpdate();
-  }
-}
diff --git a/browser/components/firefoxview/HistoryController.sys.mjs b/browser/components/firefoxview/HistoryController.sys.mjs
new file mode 100644
index 0000000000..b6f316e8e7
--- /dev/null
+++ b/browser/components/firefoxview/HistoryController.sys.mjs
@@ -0,0 +1,383 @@
+/* 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/. */
+
+const lazy = {};
+
+import { getLogger } from "chrome://browser/content/firefoxview/helpers.mjs";
+
+ChromeUtils.defineESModuleGetters(lazy, {
+  PlacesQuery: "resource://gre/modules/PlacesQuery.sys.mjs",
+  PlacesUtils: "resource://gre/modules/PlacesUtils.sys.mjs",
+});
+
+let XPCOMUtils = ChromeUtils.importESModule(
+  "resource://gre/modules/XPCOMUtils.sys.mjs"
+).XPCOMUtils;
+
+XPCOMUtils.defineLazyPreferenceGetter(
+  lazy,
+  "maxRowsPref",
+  "browser.firefox-view.max-history-rows",
+  -1
+);
+
+const HISTORY_MAP_L10N_IDS = {
+  sidebar: {
+    "history-date-today": "sidebar-history-date-today",
+    "history-date-yesterday": "sidebar-history-date-yesterday",
+    "history-date-this-month": "sidebar-history-date-this-month",
+    "history-date-prev-month": "sidebar-history-date-prev-month",
+  },
+  firefoxview: {
+    "history-date-today": "firefoxview-history-date-today",
+    "history-date-yesterday": "firefoxview-history-date-yesterday",
+    "history-date-this-month": "firefoxview-history-date-this-month",
+    "history-date-prev-month": "firefoxview-history-date-prev-month",
+  },
+};
+
+/**
+ * A list of visits displayed on a card.
+ *
+ * @typedef {object} CardEntry
+ *
+ * @property {string} domain
+ * @property {HistoryVisit[]} items
+ * @property {string} l10nId
+ */
+
+export class HistoryController {
+  /**
+   * @type {{ entries: CardEntry[]; searchQuery: string; sortOption: string; }}
+   */
+  historyCache;
+  host;
+  searchQuery;
+  sortOption;
+  #todaysDate;
+  #yesterdaysDate;
+
+  constructor(host, options) {
+    this.placesQuery = new lazy.PlacesQuery();
+    this.searchQuery = "";
+    this.sortOption = "date";
+    this.searchResultsLimit = options?.searchResultsLimit || 300;
+    this.component = HISTORY_MAP_L10N_IDS?.[options?.component]
+      ? options?.component
+      : "firefoxview";
+    this.historyCache = {
+      entries: [],
+      searchQuery: null,
+      sortOption: null,
+    };
+    this.host = host;
+
+    host.addController(this);
+  }
+
+  hostConnected() {
+    this.placesQuery.observeHistory(historyMap => this.updateCache(historyMap));
+  }
+
+  hostDisconnected() {
+    ChromeUtils.idleDispatch(() => this.placesQuery.close());
+  }
+
+  deleteFromHistory() {
+    lazy.PlacesUtils.history.remove(this.host.triggerNode.url);
+  }
+
+  onSearchQuery(e) {
+    this.searchQuery = e.detail.query;
+    this.updateCache();
+  }
+
+  onChangeSortOption(e) {
+    this.sortOption = e.target.value;
+    this.updateCache();
+  }
+
+  get historyVisits() {
+    return this.historyCache.entries;
+  }
+
+  get searchResults() {
+    return this.historyCache.searchQuery
+      ? this.historyCache.entries[0].items
+      : null;
+  }
+
+  get totalVisitsCount() {
+    return this.historyVisits.reduce(
+      (count, entry) => count + entry.items.length,
+      0
+    );
+  }
+
+  get isHistoryEmpty() {
+    return !this.historyVisits.length;
+  }
+
+  /**
+   * Update cached history.
+   *
+   * @param {Map<CacheKey, HistoryVisit[]>} [historyMap]
+   *   If provided, performs an update using the given data (instead of fetching
+   *   it from the db).
+   */
+  async updateCache(historyMap) {
+    const { searchQuery, sortOption } = this;
+    const entries = searchQuery
+      ? await this.#getVisitsForSearchQuery(searchQuery)
+      : await this.#getVisitsForSortOption(sortOption, historyMap);
+    if (this.searchQuery !== searchQuery || this.sortOption !== sortOption) {
+      // This query is stale, discard results and do not update the cache / UI.
+      return;
+    }
+    for (const { items } of entries) {
+      for (const item of items) {
+        this.#normalizeVisit(item);
+      }
+    }
+    this.historyCache = { entries, searchQuery, sortOption };
+    this.host.requestUpdate();
+  }
+
+  /**
+   * Normalize data for fxview-tabs-list.
+   *
+   * @param {HistoryVisit} visit
+   *   The visit to format.
+   */
+  #normalizeVisit(visit) {
+    visit.time = visit.date.getTime();
+    visit.title = visit.title || visit.url;
+    visit.icon = `page-icon:${visit.url}`;
+    visit.primaryL10nId = "fxviewtabrow-tabs-list-tab";
+    visit.primaryL10nArgs = JSON.stringify({
+      targetURI: visit.url,
+    });
+    visit.secondaryL10nId = "fxviewtabrow-options-menu-button";
+    visit.secondaryL10nArgs = JSON.stringify({
+      tabTitle: visit.title || visit.url,
+    });
+  }
+
+  async #getVisitsForSearchQuery(searchQuery) {
+    let items = [];
+    try {
+      items = await this.placesQuery.searchHistory(
+        searchQuery,
+        this.searchResultsLimit
+      );
+    } catch (e) {
+      getLogger("HistoryController").warn(
+        "There is a new search query in progress, so cancelling this one.",
+        e
+      );
+    }
+    return [{ items }];
+  }
+
+  async #getVisitsForSortOption(sortOption, historyMap) {
+    if (!historyMap) {
+      historyMap = await this.#fetchHistory();
+    }
+    switch (sortOption) {
+      case "date":
+        this.#setTodaysDate();
+        return this.#getVisitsForDate(historyMap);
+      case "site":
+        return this.#getVisitsForSite(historyMap);
+      default:
+        return [];
+    }
+  }
+
+  #setTodaysDate() {
+    const now = new Date();
+    this.#todaysDate = new Date(
+      now.getFullYear(),
+      now.getMonth(),
+      now.getDate()
+    );
+    this.#yesterdaysDate = new Date(
+      now.getFullYear(),
+      now.getMonth(),
+      now.getDate() - 1
+    );
+  }
+
+  /**
+   * Get a list of visits, sorted by date, in reverse chronological order.
+   *
+   * @param {Map<number, HistoryVisit[]>} historyMap
+   * @returns {CardEntry[]}
+   */
+  #getVisitsForDate(historyMap) {
+    const entries = [];
+    const visitsFromToday = this.#getVisitsFromToday(historyMap);
+    const visitsFromYesterday = this.#getVisitsFromYesterday(historyMap);
+    const visitsByDay = this.#getVisitsByDay(historyMap);
+    const visitsByMonth = this.#getVisitsByMonth(historyMap);
+
+    // Add visits from today and yesterday.
+    if (visitsFromToday.length) {
+      entries.push({
+        l10nId: HISTORY_MAP_L10N_IDS[this.component]["history-date-today"],
+        items: visitsFromToday,
+      });
+    }
+    if (visitsFromYesterday.length) {
+      entries.push({
+        l10nId: HISTORY_MAP_L10N_IDS[this.component]["history-date-yesterday"],
+        items: visitsFromYesterday,
+      });
+    }
+
+    // Add visits from this month, grouped by day.
+    visitsByDay.forEach(visits => {
+      entries.push({
+        l10nId: HISTORY_MAP_L10N_IDS[this.component]["history-date-this-month"],
+        items: visits,
+      });
+    });
+
+    // Add visits from previous months, grouped by month.
+    visitsByMonth.forEach(visits => {
+      entries.push({
+        l10nId: HISTORY_MAP_L10N_IDS[this.component]["history-date-prev-month"],
+        items: visits,
+      });
+    });
+    return entries;
+  }
+
+  #getVisitsFromToday(cachedHistory) {
+    const mapKey = this.placesQuery.getStartOfDayTimestamp(this.#todaysDate);
+    const visits = cachedHistory.get(mapKey) ?? [];
+    return [...visits];
+  }
+
+  #getVisitsFromYesterday(cachedHistory) {
+    const mapKey = this.placesQuery.getStartOfDayTimestamp(
+      this.#yesterdaysDate
+    );
+    const visits = cachedHistory.get(mapKey) ?? [];
+    return [...visits];
+  }
+
+  /**
+   * Get a list of visits per day for each day on this month, excluding today
+   * and yesterday.
+   *
+   * @param {Map<number, HistoryVisit[]>} cachedHistory
+   *   The history cache to process.
+   * @returns {HistoryVisit[][]}
+   *   A list of visits for each day.
+   */
+  #getVisitsByDay(cachedHistory) {
+    const visitsPerDay = [];
+    for (const [time, visits] of cachedHistory.entries()) {
+      const date = new Date(time);
+      if (
+        this.#isSameDate(date, this.#todaysDate) ||
+        this.#isSameDate(date, this.#yesterdaysDate)
+      ) {
+        continue;
+      } else if (!this.#isSameMonth(date, this.#todaysDate)) {
+        break;
+      } else {
+        visitsPerDay.push(visits);
+      }
+    }
+    return visitsPerDay;
+  }
+
+  /**
+   * Get a list of visits per month for each month, excluding this one, and
+   * excluding yesterday's visits if yesterday happens to fall on the previous
+   * month.
+   *
+   * @param {Map<number, HistoryVisit[]>} cachedHistory
+   *   The history cache to process.
+   * @returns {HistoryVisit[][]}
+   *   A list of visits for each month.
+   */
+  #getVisitsByMonth(cachedHistory) {
+    const visitsPerMonth = [];
+    let previousMonth = null;
+    for (const [time, visits] of cachedHistory.entries()) {
+      const date = new Date(time);
+      if (
+        this.#isSameMonth(date, this.#todaysDate) ||
+        this.#isSameDate(date, this.#yesterdaysDate)
+      ) {
+        continue;
+      }
+      const month = this.placesQuery.getStartOfMonthTimestamp(date);
+      if (month !== previousMonth) {
+        visitsPerMonth.push(visits);
+      } else {
+        visitsPerMonth[visitsPerMonth.length - 1] = visitsPerMonth
+          .at(-1)
+          .concat(visits);
+      }
+      previousMonth = month;
+    }
+    return visitsPerMonth;
+  }
+
+  /**
+   * Given two date instances, check if their dates are equivalent.
+   *
+   * @param {Date} dateToCheck
+   * @param {Date} date
+   * @returns {boolean}
+   *   Whether both date instances have equivalent dates.
+   */
+  #isSameDate(dateToCheck, date) {
+    return (
+      dateToCheck.getDate() === date.getDate() &&
+      this.#isSameMonth(dateToCheck, date)
+    );
+  }
+
+  /**
+   * Given two date instances, check if their months are equivalent.
+   *
+   * @param {Date} dateToCheck
+   * @param {Date} month
+   * @returns {boolean}
+   *   Whether both date instances have equivalent months.
+   */
+  #isSameMonth(dateToCheck, month) {
+    return (
+      dateToCheck.getMonth() === month.getMonth() &&
+      dateToCheck.getFullYear() === month.getFullYear()
+    );
+  }
+
+  /**
+   * Get a list of visits, sorted by site, in alphabetical order.
+   *
+   * @param {Map<string, HistoryVisit[]>} historyMap
+   * @returns {CardEntry[]}
+   */
+  #getVisitsForSite(historyMap) {
+    return Array.from(historyMap.entries(), ([domain, items]) => ({
+      domain,
+      items,
+      l10nId: domain ? null : "firefoxview-history-site-localhost",
+    })).sort((a, b) => a.domain.localeCompare(b.domain));
+  }
+
+  async #fetchHistory() {
+    return this.placesQuery.getHistory({
+      daysOld: 60,
+      limit: lazy.maxRowsPref,
+      sortBy: this.sortOption,
+    });
+  }
+}
diff --git a/browser/components/firefoxview/SyncedTabsController.sys.mjs b/browser/components/firefoxview/SyncedTabsController.sys.mjs
index 6ab8249bfe..9462766545 100644
--- a/browser/components/firefoxview/SyncedTabsController.sys.mjs
+++ b/browser/components/firefoxview/SyncedTabsController.sys.mjs
@@ -10,7 +10,7 @@ ChromeUtils.defineESModuleGetters(lazy, {
 
 import { SyncedTabsErrorHandler } from "resource:///modules/firefox-view-synced-tabs-error-handler.sys.mjs";
 import { TabsSetupFlowManager } from "resource:///modules/firefox-view-tabs-setup-manager.sys.mjs";
-import { searchTabList } from "chrome://browser/content/firefoxview/helpers.mjs";
+import { searchTabList } from "chrome://browser/content/firefoxview/search-helpers.mjs";
 
 const SYNCED_TABS_CHANGED = "services.sync.tabs.changed";
 const TOPIC_SETUPSTATE_CHANGED = "firefox-view.setupstate.changed";
diff --git a/browser/components/firefoxview/card-container.mjs b/browser/components/firefoxview/card-container.mjs
index 1755d97555..84c6acc5c4 100644
--- a/browser/components/firefoxview/card-container.mjs
+++ b/browser/components/firefoxview/card-container.mjs
@@ -132,76 +132,71 @@ class CardContainer extends MozLitElement {
         rel="stylesheet"
         href="chrome://browser/content/firefoxview/card-container.css"
       />
-      <section
-        aria-labelledby="header"
-        aria-label=${ifDefined(this.sectionLabel)}
-      >
-        ${when(
-          this.toggleDisabled,
-          () => html`<div
-            class=${classMap({
-              "card-container": true,
-              inner: this.isInnerCard,
-              "empty-state": this.isEmptyState && !this.isInnerCard,
-            })}
+      ${when(
+        this.toggleDisabled,
+        () => html`<div
+          class=${classMap({
+            "card-container": true,
+            inner: this.isInnerCard,
+            "empty-state": this.isEmptyState && !this.isInnerCard,
+          })}
+        >
+          <span
+            id="header"
+            class="card-container-header"
+            ?hidden=${ifDefined(this.hideHeader)}
+            toggleDisabled
+            ?withViewAll=${this.showViewAll}
           >
-            <span
-              id="header"
-              class="card-container-header"
-              ?hidden=${ifDefined(this.hideHeader)}
-              toggleDisabled
-              ?withViewAll=${this.showViewAll}
-            >
-              <slot name="header"></slot>
-              <slot name="secondary-header"></slot>
-            </span>
-            <a
-              href="about:firefoxview#${this.shortPageName}"
-              @click=${this.viewAllClicked}
-              class="view-all-link"
-              data-l10n-id="firefoxview-view-all-link"
-              ?hidden=${!this.showViewAll}
-            ></a>
-            <slot name="main"></slot>
-            <slot name="footer" class="card-container-footer"></slot>
-          </div>`,
-          () => html`<details
-            class=${classMap({
-              "card-container": true,
-              inner: this.isInnerCard,
-              "empty-state": this.isEmptyState && !this.isInnerCard,
-            })}
-            ?open=${this.isExpanded}
-            ?isOpenTabsView=${this.removeBlockEndMargin}
-            @toggle=${this.onToggleContainer}
+            <slot name="header"></slot>
+            <slot name="secondary-header"></slot>
+          </span>
+          <a
+            href="about:firefoxview#${this.shortPageName}"
+            @click=${this.viewAllClicked}
+            class="view-all-link"
+            data-l10n-id="firefoxview-view-all-link"
+            ?hidden=${!this.showViewAll}
+          ></a>
+          <slot name="main"></slot>
+          <slot name="footer" class="card-container-footer"></slot>
+        </div>`,
+        () => html`<details
+          class=${classMap({
+            "card-container": true,
+            inner: this.isInnerCard,
+            "empty-state": this.isEmptyState && !this.isInnerCard,
+          })}
+          ?open=${this.isExpanded}
+          ?isOpenTabsView=${this.removeBlockEndMargin}
+          @toggle=${this.onToggleContainer}
+          role=${this.isInnerCard ? "presentation" : "group"}
+        >
+          <summary
+            class="card-container-header"
+            ?hidden=${ifDefined(this.hideHeader)}
+            ?withViewAll=${this.showViewAll}
           >
-            <summary
-              id="header"
-              class="card-container-header"
-              ?hidden=${ifDefined(this.hideHeader)}
-              ?withViewAll=${this.showViewAll}
-            >
-              <span
-                class="icon chevron-icon"
-                aria-role="presentation"
-                data-l10n-id="firefoxview-collapse-button-${this.isExpanded
-                  ? "hide"
-                  : "show"}"
-              ></span>
-              <slot name="header"></slot>
-            </summary>
-            <a
-              href="about:firefoxview#${this.shortPageName}"
-              @click=${this.viewAllClicked}
-              class="view-all-link"
-              data-l10n-id="firefoxview-view-all-link"
-              ?hidden=${!this.showViewAll}
-            ></a>
-            <slot name="main"></slot>
-            <slot name="footer" class="card-container-footer"></slot>
-          </details>`
-        )}
-      </section>
+            <span
+              class="icon chevron-icon"
+              role="presentation"
+              data-l10n-id="firefoxview-collapse-button-${this.isExpanded
+                ? "hide"
+                : "show"}"
+            ></span>
+            <slot name="header"></slot>
+          </summary>
+          <a
+            href="about:firefoxview#${this.shortPageName}"
+            @click=${this.viewAllClicked}
+            class="view-all-link"
+            data-l10n-id="firefoxview-view-all-link"
+            ?hidden=${!this.showViewAll}
+          ></a>
+          <slot name="main"></slot>
+          <slot name="footer" class="card-container-footer"></slot>
+        </details>`
+      )}
     `;
   }
 }
diff --git a/browser/components/firefoxview/firefox-view-notification-manager.sys.mjs b/browser/components/firefoxview/firefox-view-notification-manager.sys.mjs
deleted file mode 100644
index 3f9056a7cd..0000000000
--- a/browser/components/firefoxview/firefox-view-notification-manager.sys.mjs
+++ /dev/null
@@ -1,112 +0,0 @@
-/* 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;
-  }
-})();
diff --git a/browser/components/firefoxview/firefox-view-places-query.sys.mjs b/browser/components/firefoxview/firefox-view-places-query.sys.mjs
deleted file mode 100644
index 8923905769..0000000000
--- a/browser/components/firefoxview/firefox-view-places-query.sys.mjs
+++ /dev/null
@@ -1,187 +0,0 @@
-/* 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/. */
-
-import { PlacesQuery } from "resource://gre/modules/PlacesQuery.sys.mjs";
-
-/**
- * Extension of PlacesQuery which provides additional caches for Firefox View.
- */
-export class FirefoxViewPlacesQuery extends PlacesQuery {
-  /** @type {Date} */
-  #todaysDate = null;
-  /** @type {Date} */
-  #yesterdaysDate = null;
-
-  get visitsFromToday() {
-    if (this.cachedHistory == null || this.#todaysDate == null) {
-      return [];
-    }
-    const mapKey = this.getStartOfDayTimestamp(this.#todaysDate);
-    return this.cachedHistory.get(mapKey) ?? [];
-  }
-
-  get visitsFromYesterday() {
-    if (this.cachedHistory == null || this.#yesterdaysDate == null) {
-      return [];
-    }
-    const mapKey = this.getStartOfDayTimestamp(this.#yesterdaysDate);
-    return this.cachedHistory.get(mapKey) ?? [];
-  }
-
-  /**
-   * Get a list of visits per day for each day on this month, excluding today
-   * and yesterday.
-   *
-   * @returns {HistoryVisit[][]}
-   *   A list of visits for each day.
-   */
-  get visitsByDay() {
-    const visitsPerDay = [];
-    for (const [time, visits] of this.cachedHistory.entries()) {
-      const date = new Date(time);
-      if (
-        this.#isSameDate(date, this.#todaysDate) ||
-        this.#isSameDate(date, this.#yesterdaysDate)
-      ) {
-        continue;
-      } else if (!this.#isSameMonth(date, this.#todaysDate)) {
-        break;
-      } else {
-        visitsPerDay.push(visits);
-      }
-    }
-    return visitsPerDay;
-  }
-
-  /**
-   * Get a list of visits per month for each month, excluding this one, and
-   * excluding yesterday's visits if yesterday happens to fall on the previous
-   * month.
-   *
-   * @returns {HistoryVisit[][]}
-   *   A list of visits for each month.
-   */
-  get visitsByMonth() {
-    const visitsPerMonth = [];
-    let previousMonth = null;
-    for (const [time, visits] of this.cachedHistory.entries()) {
-      const date = new Date(time);
-      if (
-        this.#isSameMonth(date, this.#todaysDate) ||
-        this.#isSameDate(date, this.#yesterdaysDate)
-      ) {
-        continue;
-      }
-      const month = this.getStartOfMonthTimestamp(date);
-      if (month !== previousMonth) {
-        visitsPerMonth.push(visits);
-      } else {
-        visitsPerMonth[visitsPerMonth.length - 1] = visitsPerMonth
-          .at(-1)
-          .concat(visits);
-      }
-      previousMonth = month;
-    }
-    return visitsPerMonth;
-  }
-
-  formatRowAsVisit(row) {
-    const visit = super.formatRowAsVisit(row);
-    this.#normalizeVisit(visit);
-    return visit;
-  }
-
-  formatEventAsVisit(event) {
-    const visit = super.formatEventAsVisit(event);
-    this.#normalizeVisit(visit);
-    return visit;
-  }
-
-  /**
-   * Normalize data for fxview-tabs-list.
-   *
-   * @param {HistoryVisit} visit
-   *   The visit to format.
-   */
-  #normalizeVisit(visit) {
-    visit.time = visit.date.getTime();
-    visit.title = visit.title || visit.url;
-    visit.icon = `page-icon:${visit.url}`;
-    visit.primaryL10nId = "fxviewtabrow-tabs-list-tab";
-    visit.primaryL10nArgs = JSON.stringify({
-      targetURI: visit.url,
-    });
-    visit.secondaryL10nId = "fxviewtabrow-options-menu-button";
-    visit.secondaryL10nArgs = JSON.stringify({
-      tabTitle: visit.title || visit.url,
-    });
-  }
-
-  async fetchHistory() {
-    await super.fetchHistory();
-    if (this.cachedHistoryOptions.sortBy === "date") {
-      this.#setTodaysDate();
-    }
-  }
-
-  handlePageVisited(event) {
-    const visit = super.handlePageVisited(event);
-    if (!visit) {
-      return;
-    }
-    if (
-      this.cachedHistoryOptions.sortBy === "date" &&
-      (this.#todaysDate == null ||
-        (visit.date.getTime() > this.#todaysDate.getTime() &&
-          !this.#isSameDate(visit.date, this.#todaysDate)))
-    ) {
-      // If today's date has passed (or is null), it should be updated now.
-      this.#setTodaysDate();
-    }
-  }
-
-  #setTodaysDate() {
-    const now = new Date();
-    this.#todaysDate = new Date(
-      now.getFullYear(),
-      now.getMonth(),
-      now.getDate()
-    );
-    this.#yesterdaysDate = new Date(
-      now.getFullYear(),
-      now.getMonth(),
-      now.getDate() - 1
-    );
-  }
-
-  /**
-   * Given two date instances, check if their dates are equivalent.
-   *
-   * @param {Date} dateToCheck
-   * @param {Date} date
-   * @returns {boolean}
-   *   Whether both date instances have equivalent dates.
-   */
-  #isSameDate(dateToCheck, date) {
-    return (
-      dateToCheck.getDate() === date.getDate() &&
-      this.#isSameMonth(dateToCheck, date)
-    );
-  }
-
-  /**
-   * Given two date instances, check if their months are equivalent.
-   *
-   * @param {Date} dateToCheck
-   * @param {Date} month
-   * @returns {boolean}
-   *   Whether both date instances have equivalent months.
-   */
-  #isSameMonth(dateToCheck, month) {
-    return (
-      dateToCheck.getMonth() === month.getMonth() &&
-      dateToCheck.getFullYear() === month.getFullYear()
-    );
-  }
-}
diff --git a/browser/components/firefoxview/firefoxview.css b/browser/components/firefoxview/firefoxview.css
index a91c90c39e..0789c887bf 100644
--- a/browser/components/firefoxview/firefoxview.css
+++ b/browser/components/firefoxview/firefoxview.css
@@ -31,17 +31,6 @@
   --newtab-background-color: #F9F9FB;
 
   --fxview-card-header-font-weight: 500;
-
-  /* Make the attention dot color match the browser UI on Linux, and on HCM
-   * with a lightweight theme. */
-  &[lwtheme] {
-    --attention-dot-color: light-dark(#2ac3a2, #54ffbd);
-  }
-  @media (-moz-platform: linux) {
-    &:not([lwtheme]) {
-      --attention-dot-color: AccentColor;
-    }
-  }
 }
 
 @media (prefers-color-scheme: dark) {
diff --git a/browser/components/firefoxview/firefoxview.html b/browser/components/firefoxview/firefoxview.html
index 5bffb5a1d8..bdaa41bd7c 100644
--- a/browser/components/firefoxview/firefoxview.html
+++ b/browser/components/firefoxview/firefoxview.html
@@ -13,7 +13,6 @@
     <meta name="color-scheme" content="light dark" />
     <title data-l10n-id="firefoxview-page-title"></title>
     <link rel="localization" href="branding/brand.ftl" />
-    <link rel="localization" href="toolkit/branding/accounts.ftl" />
     <link rel="localization" href="browser/firefoxView.ftl" />
     <link rel="localization" href="toolkit/branding/brandings.ftl" />
     <link rel="localization" href="browser/migrationWizard.ftl" />
diff --git a/browser/components/firefoxview/fxview-empty-state.mjs b/browser/components/firefoxview/fxview-empty-state.mjs
index 9e6bc488fa..3e94767043 100644
--- a/browser/components/firefoxview/fxview-empty-state.mjs
+++ b/browser/components/firefoxview/fxview-empty-state.mjs
@@ -53,7 +53,6 @@ class FxviewEmptyState extends MozLitElement {
       return html``;
     }
     return html` <a
-      aria-details="card-container"
       data-l10n-name=${descriptionLink.name}
       href=${descriptionLink.url}
       target=${descriptionLink?.sameTarget ? "_self" : "_blank"}
@@ -68,7 +67,7 @@ class FxviewEmptyState extends MozLitElement {
        />
        <card-container hideHeader="true" exportparts="image" ?isInnerCard="${
          this.isInnerCard
-       }" id="card-container" isEmptyState="true">
+       }" id="card-container" isEmptyState="true" role="group" aria-labelledby="header" aria-describedby="description">
          <div slot="main" class=${classMap({
            selectedTab: this.isSelectedTab,
            imageHidden: !this.mainImageUrl,
@@ -98,19 +97,21 @@ class FxviewEmptyState extends MozLitElement {
                    data-l10n-args="${JSON.stringify(this.headerArgs)}">
                  </span>
              </h2>
-             ${repeat(
-               this.descriptionLabels,
-               descLabel => descLabel,
-               (descLabel, index) => html`<p
-                 class=${classMap({
-                   description: true,
-                   secondary: index !== 0,
-                 })}
-                 data-l10n-id="${descLabel}"
-               >
-                 ${this.linkTemplate(this.descriptionLink)}
-               </p>`
-             )}
+             <span id="description">
+               ${repeat(
+                 this.descriptionLabels,
+                 descLabel => descLabel,
+                 (descLabel, index) => html`<p
+                   class=${classMap({
+                     description: true,
+                     secondary: index !== 0,
+                   })}
+                   data-l10n-id="${descLabel}"
+                 >
+                   ${this.linkTemplate(this.descriptionLink)}
+                 </p>`
+               )}
+             </span>
              <slot name="primary-action"></slot>
            </div>
          </div>
diff --git a/browser/components/firefoxview/fxview-search-textbox.mjs b/browser/components/firefoxview/fxview-search-textbox.mjs
index 1332f5f3f6..107aa8f7a4 100644
--- a/browser/components/firefoxview/fxview-search-textbox.mjs
+++ b/browser/components/firefoxview/fxview-search-textbox.mjs
@@ -20,7 +20,7 @@ const SEARCH_DEBOUNCE_TIMEOUT_MS = 1000;
  *
  * There is no actual searching done here. That needs to be implemented by the
  * `fxview-search-textbox-query` event handler. `searchTabList()` from
- * `helpers.mjs` can be used as a starting point.
+ * `search-helpers.mjs` can be used as a starting point.
  *
  * @property {string} placeholder
  *   The placeholder text for the search box.
diff --git a/browser/components/firefoxview/fxview-tab-list.mjs b/browser/components/firefoxview/fxview-tab-list.mjs
index 57181e3bea..63be9379db 100644
--- a/browser/components/firefoxview/fxview-tab-list.mjs
+++ b/browser/components/firefoxview/fxview-tab-list.mjs
@@ -11,7 +11,7 @@ import {
   when,
 } from "chrome://global/content/vendor/lit.all.mjs";
 import { MozLitElement } from "chrome://global/content/lit-utils.mjs";
-import { escapeRegExp } from "./helpers.mjs";
+import { escapeRegExp } from "./search-helpers.mjs";
 // eslint-disable-next-line import/no-unassigned-import
 import "chrome://global/content/elements/moz-button.mjs";
 
@@ -49,7 +49,6 @@ if (!window.IS_STORYBOOK) {
  * @property {number} maxTabsLength - The max number of tabs for the list
  * @property {Array} tabItems - Items to show in the tab list
  * @property {string} searchQuery - The query string to highlight, if provided.
- * @property {string} searchInProgress - Whether a search has been initiated.
  * @property {string} secondaryActionClass - The class used to style the secondary action element
  * @property {string} tertiaryActionClass - The class used to style the tertiary action element
  */
@@ -65,7 +64,6 @@ export class FxviewTabListBase extends MozLitElement {
     this.maxTabsLength = 25;
     this.tabItems = [];
     this.compactRows = false;
-    this.searchInProgress = false;
     this.updatesPaused = true;
     this.#register();
   }
@@ -80,12 +78,12 @@ export class FxviewTabListBase extends MozLitElement {
     tabItems: { type: Array },
     updatesPaused: { type: Boolean },
     searchQuery: { type: String },
-    searchInProgress: { type: Boolean },
     secondaryActionClass: { type: String },
     tertiaryActionClass: { type: String },
   };
 
   static queries = {
+    emptyState: "fxview-empty-state",
     rowEls: {
       all: "fxview-tab-row",
     },
@@ -308,11 +306,7 @@ export class FxviewTabListBase extends MozLitElement {
   }
 
   render() {
-    if (
-      this.searchQuery &&
-      this.tabItems.length === 0 &&
-      !this.searchInProgress
-    ) {
+    if (this.searchQuery && !this.tabItems.length) {
       return this.emptySearchResultsTemplate();
     }
     return html`
diff --git a/browser/components/firefoxview/helpers.mjs b/browser/components/firefoxview/helpers.mjs
index b206deef18..fb41fac0e1 100644
--- a/browser/components/firefoxview/helpers.mjs
+++ b/browser/components/firefoxview/helpers.mjs
@@ -126,27 +126,6 @@ export function isSearchEnabled() {
 }
 
 /**
- * Escape special characters for regular expressions from a string.
- *
- * @param {string} string
- *   The string to sanitize.
- * @returns {string} The sanitized string.
- */
-export function escapeRegExp(string) {
-  return string.replace(/[.*+?^${}()|[\]\\]/g, "\\$&");
-}
-
-/**
- * Search a tab list for items that match the given query.
- */
-export function searchTabList(query, tabList) {
-  const regex = RegExp(escapeRegExp(query), "i");
-  return tabList.filter(
-    ({ title, url }) => regex.test(title) || regex.test(url)
-  );
-}
-
-/**
  * Get or create a logger, whose log-level is controlled by a pref
  *
  * @param {string} loggerName - Creating named loggers helps differentiate log messages from different
diff --git a/browser/components/firefoxview/history.mjs b/browser/components/firefoxview/history.mjs
index 478422d49b..4919f94e9c 100644
--- a/browser/components/firefoxview/history.mjs
+++ b/browser/components/firefoxview/history.mjs
@@ -15,13 +15,13 @@ import {
 import { ViewPage } from "./viewpage.mjs";
 // eslint-disable-next-line import/no-unassigned-import
 import "chrome://browser/content/migration/migration-wizard.mjs";
-import { HistoryController } from "./HistoryController.mjs";
 // eslint-disable-next-line import/no-unassigned-import
 import "chrome://global/content/elements/moz-button.mjs";
 
 const lazy = {};
 
 ChromeUtils.defineESModuleGetters(lazy, {
+  HistoryController: "resource:///modules/HistoryController.sys.mjs",
   ProfileAge: "resource://gre/modules/ProfileAge.sys.mjs",
 });
 
@@ -47,7 +47,7 @@ class HistoryInView extends ViewPage {
     this.cumulativeSearches = 0;
   }
 
-  controller = new HistoryController(this, {
+  controller = new lazy.HistoryController(this, {
     searchResultsLimit: SEARCH_RESULTS_LIMIT,
   });
 
@@ -57,7 +57,7 @@ class HistoryInView extends ViewPage {
     }
     this._started = true;
 
-    this.controller.updateAllHistoryItems();
+    this.controller.updateCache();
 
     this.toggleVisibilityInCardContainer();
   }
@@ -170,8 +170,8 @@ class HistoryInView extends ViewPage {
     this.recordContextMenuTelemetry("delete-from-history", e);
   }
 
-  async onChangeSortOption(e) {
-    await this.controller.onChangeSortOption(e);
+  onChangeSortOption(e) {
+    this.controller.onChangeSortOption(e);
     Services.telemetry.recordEvent(
       "firefoxview_next",
       "sort_history",
@@ -184,8 +184,8 @@ class HistoryInView extends ViewPage {
     );
   }
 
-  async onSearchQuery(e) {
-    await this.controller.onSearchQuery(e);
+  onSearchQuery(e) {
+    this.controller.onSearchQuery(e);
     this.cumulativeSearches = this.controller.searchQuery
       ? this.cumulativeSearches + 1
       : 0;
@@ -287,7 +287,7 @@ class HistoryInView extends ViewPage {
   get cardsTemplate() {
     if (this.controller.searchResults) {
       return this.#searchResultsTemplate();
-    } else if (this.controller.allHistoryItems.size) {
+    } else if (!this.controller.isHistoryEmpty) {
       return this.#historyCardsTemplate();
     }
     return this.#emptyMessageTemplate();
@@ -295,14 +295,11 @@ class HistoryInView extends ViewPage {
 
   #historyCardsTemplate() {
     let cardsTemplate = [];
-    if (
-      this.controller.sortOption === "date" &&
-      this.controller.historyMapByDate.length
-    ) {
-      this.controller.historyMapByDate.forEach(historyItem => {
-        if (historyItem.items.length) {
+    switch (this.controller.sortOption) {
+      case "date":
+        cardsTemplate = this.controller.historyVisits.map(historyItem => {
           let dateArg = JSON.stringify({ date: historyItem.items[0].time });
-          cardsTemplate.push(html`<card-container>
+          return html`<card-container>
             <h3
               slot="header"
               data-l10n-id=${historyItem.l10nId}
@@ -316,19 +313,18 @@ class HistoryInView extends ViewPage {
                 : "time"}
               hasPopup="menu"
               maxTabsLength=${this.maxTabsLength}
-              .tabItems=${[...historyItem.items]}
+              .tabItems=${historyItem.items}
               @fxview-tab-list-primary-action=${this.onPrimaryAction}
               @fxview-tab-list-secondary-action=${this.onSecondaryAction}
             >
               ${this.panelListTemplate()}
             </fxview-tab-list>
-          </card-container>`);
-        }
-      });
-    } else if (this.controller.historyMapBySite.length) {
-      this.controller.historyMapBySite.forEach(historyItem => {
-        if (historyItem.items.length) {
-          cardsTemplate.push(html`<card-container>
+          </card-container>`;
+        });
+        break;
+      case "site":
+        cardsTemplate = this.controller.historyVisits.map(historyItem => {
+          return html`<card-container>
             <h3 slot="header" data-l10n-id="${ifDefined(historyItem.l10nId)}">
               ${historyItem.domain}
             </h3>
@@ -338,15 +334,15 @@ class HistoryInView extends ViewPage {
               dateTimeFormat="dateTime"
               hasPopup="menu"
               maxTabsLength=${this.maxTabsLength}
-              .tabItems=${[...historyItem.items]}
+              .tabItems=${historyItem.items}
               @fxview-tab-list-primary-action=${this.onPrimaryAction}
               @fxview-tab-list-secondary-action=${this.onSecondaryAction}
             >
               ${this.panelListTemplate()}
             </fxview-tab-list>
-          </card-container>`);
-        }
-      });
+          </card-container>`;
+        });
+        break;
     }
     return cardsTemplate;
   }
@@ -420,7 +416,6 @@ class HistoryInView extends ViewPage {
         .tabItems=${this.controller.searchResults}
         @fxview-tab-list-primary-action=${this.onPrimaryAction}
         @fxview-tab-list-secondary-action=${this.onSecondaryAction}
-        .searchInProgress=${this.controller.placesQuery.searchInProgress}
       >
         ${this.panelListTemplate()}
       </fxview-tab-list>
@@ -491,12 +486,19 @@ class HistoryInView extends ViewPage {
           class="import-history-banner"
           hideHeader="true"
           ?hidden=${!this.shouldShowImportBanner()}
+          role="group"
+          aria-labelledby="header"
+          aria-describedby="description"
         >
           <div slot="main">
             <div class="banner-text">
-              <span data-l10n-id="firefoxview-import-history-header"></span>
+              <span
+                data-l10n-id="firefoxview-import-history-header"
+                id="header"
+              ></span>
               <span
                 data-l10n-id="firefoxview-import-history-description"
+                id="description"
               ></span>
             </div>
             <div class="buttons">
@@ -518,7 +520,7 @@ class HistoryInView extends ViewPage {
       </div>
       <div
         class="show-all-history-footer"
-        ?hidden=${!this.controller.allHistoryItems.size}
+        ?hidden=${this.controller.isHistoryEmpty}
       >
         <button
           class="show-all-history-button"
@@ -532,11 +534,6 @@ class HistoryInView extends ViewPage {
 
   willUpdate() {
     this.fullyUpdated = false;
-    if (this.controller.allHistoryItems.size) {
-      // onChangeSortOption() will update history data once it has been fetched
-      // from the API.
-      this.controller.createHistoryMaps();
-    }
   }
 }
 customElements.define("view-history", HistoryInView);
diff --git a/browser/components/firefoxview/jar.mn b/browser/components/firefoxview/jar.mn
index 8bf3597aa5..6eee0b8ffd 100644
--- a/browser/components/firefoxview/jar.mn
+++ b/browser/components/firefoxview/jar.mn
@@ -9,7 +9,6 @@ browser.jar:
     content/browser/firefoxview/firefoxview.mjs
     content/browser/firefoxview/history.css
     content/browser/firefoxview/history.mjs
-    content/browser/firefoxview/HistoryController.mjs
     content/browser/firefoxview/opentabs.mjs
     content/browser/firefoxview/view-opentabs.css
     content/browser/firefoxview/syncedtabs.mjs
@@ -19,6 +18,7 @@ browser.jar:
     content/browser/firefoxview/fxview-empty-state.css
     content/browser/firefoxview/fxview-empty-state.mjs
     content/browser/firefoxview/helpers.mjs
+    content/browser/firefoxview/search-helpers.mjs
     content/browser/firefoxview/fxview-search-textbox.css
     content/browser/firefoxview/fxview-search-textbox.mjs
     content/browser/firefoxview/fxview-tab-list.css
diff --git a/browser/components/firefoxview/opentabs.mjs b/browser/components/firefoxview/opentabs.mjs
index fb84553e26..10845374bc 100644
--- a/browser/components/firefoxview/opentabs.mjs
+++ b/browser/components/firefoxview/opentabs.mjs
@@ -13,9 +13,9 @@ import {
   getLogger,
   isSearchEnabled,
   placeLinkOnClipboard,
-  searchTabList,
   MAX_TABS_FOR_RECENT_BROWSING,
 } from "./helpers.mjs";
+import { searchTabList } from "./search-helpers.mjs";
 import { ViewPage, ViewPageContent } from "./viewpage.mjs";
 // eslint-disable-next-line import/no-unassigned-import
 import "chrome://browser/content/firefoxview/opentabs-tab-list.mjs";
diff --git a/browser/components/firefoxview/recentlyclosed.mjs b/browser/components/firefoxview/recentlyclosed.mjs
index 7efd8d09f2..6b3ed711c4 100644
--- a/browser/components/firefoxview/recentlyclosed.mjs
+++ b/browser/components/firefoxview/recentlyclosed.mjs
@@ -8,11 +8,8 @@ import {
   ifDefined,
   when,
 } from "chrome://global/content/vendor/lit.all.mjs";
-import {
-  isSearchEnabled,
-  searchTabList,
-  MAX_TABS_FOR_RECENT_BROWSING,
-} from "./helpers.mjs";
+import { isSearchEnabled, MAX_TABS_FOR_RECENT_BROWSING } from "./helpers.mjs";
+import { searchTabList } from "./search-helpers.mjs";
 import { ViewPage } from "./viewpage.mjs";
 // eslint-disable-next-line import/no-unassigned-import
 import "chrome://browser/content/firefoxview/card-container.mjs";
diff --git a/browser/components/firefoxview/search-helpers.mjs b/browser/components/firefoxview/search-helpers.mjs
new file mode 100644
index 0000000000..3a8c1e580c
--- /dev/null
+++ b/browser/components/firefoxview/search-helpers.mjs
@@ -0,0 +1,24 @@
+/* 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/. */
+
+/**
+ * Escape special characters for regular expressions from a string.
+ *
+ * @param {string} string
+ *   The string to sanitize.
+ * @returns {string} The sanitized string.
+ */
+export function escapeRegExp(string) {
+  return string.replace(/[.*+?^${}()|[\]\\]/g, "\\$&");
+}
+
+/**
+ * Search a tab list for items that match the given query.
+ */
+export function searchTabList(query, tabList) {
+  const regex = RegExp(escapeRegExp(query), "i");
+  return tabList.filter(
+    ({ title, url }) => regex.test(title) || regex.test(url)
+  );
+}
diff --git a/browser/components/firefoxview/syncedtabs.mjs b/browser/components/firefoxview/syncedtabs.mjs
index 1c65650c10..e71cce465e 100644
--- a/browser/components/firefoxview/syncedtabs.mjs
+++ b/browser/components/firefoxview/syncedtabs.mjs
@@ -170,7 +170,6 @@ class SyncedTabsInView extends ViewPage {
           data-l10n-id="${ifDefined(buttonLabel)}"
           data-action="${action}"
           @click=${e => this.controller.handleEvent(e)}
-          aria-details="empty-container"
         ></button>
       </fxview-empty-state>
     `;
diff --git a/browser/components/firefoxview/tests/browser/browser.toml b/browser/components/firefoxview/tests/browser/browser.toml
index db8b2ea25c..c9036286d7 100644
--- a/browser/components/firefoxview/tests/browser/browser.toml
+++ b/browser/components/firefoxview/tests/browser/browser.toml
@@ -43,9 +43,6 @@ skip-if = ["true"] # Bug 1869605 and # Bug 1870296
 
 ["browser_history_firefoxview.js"]
 
-["browser_notification_dot.js"]
-skip-if = ["true"] # Bug 1851453
-
 ["browser_opentabs_cards.js"]
 
 ["browser_opentabs_changes.js"]
diff --git a/browser/components/firefoxview/tests/browser/browser_firefoxview.js b/browser/components/firefoxview/tests/browser/browser_firefoxview.js
index 1a51d61f42..00083d7c91 100644
--- a/browser/components/firefoxview/tests/browser/browser_firefoxview.js
+++ b/browser/components/firefoxview/tests/browser/browser_firefoxview.js
@@ -31,20 +31,47 @@ add_task(async function test_aria_roles() {
     );
     let recentlyClosedEmptyState = recentlyClosedComponent.emptyState;
     let descriptionEls = recentlyClosedEmptyState.descriptionEls;
+    const recentlyClosedCard = SpecialPowers.wrap(
+      recentlyClosedEmptyState
+    ).openOrClosedShadowRoot.querySelector("card-container");
     is(
-      descriptionEls[1].querySelector("a").getAttribute("aria-details"),
-      "card-container",
-      "The link within the recently closed empty state has the expected 'aria-details' attribute."
+      recentlyClosedCard.getAttribute("aria-labelledby"),
+      "header",
+      "The recently closed empty state container has the expected 'aria-labelledby' attribute."
+    );
+    is(
+      recentlyClosedCard.getAttribute("aria-describedby"),
+      "description",
+      "The recently closed empty state container has the expected 'aria-describedby' attribute."
+    );
+    is(
+      recentlyClosedCard.getAttribute("role"),
+      "group",
+      "The recently closed empty state container has the expected 'role' attribute."
     );
 
     let syncedTabsComponent = document.querySelector(
       "view-syncedtabs[slot=syncedtabs]"
     );
     let syncedTabsEmptyState = syncedTabsComponent.emptyState;
+    const syncedCard =
+      SpecialPowers.wrap(
+        syncedTabsEmptyState
+      ).openOrClosedShadowRoot.querySelector("card-container");
+    is(
+      syncedCard.getAttribute("aria-labelledby"),
+      "header",
+      "The synced tabs empty state container has the expected 'aria-labelledby' attribute."
+    );
+    is(
+      syncedCard.getAttribute("aria-describedby"),
+      "description",
+      "The synced tabs empty state container has the expected 'aria-describedby' attribute."
+    );
     is(
-      syncedTabsEmptyState.querySelector("button").getAttribute("aria-details"),
-      "empty-container",
-      "The button within the synced tabs empty state has the expected 'aria-details' attribute."
+      syncedCard.getAttribute("role"),
+      "group",
+      "The synced tabs empty state container has the expected 'role' attribute."
     );
 
     // Test keyboard navigation from card-container summary
diff --git a/browser/components/firefoxview/tests/browser/browser_firefoxview_virtual_list.js b/browser/components/firefoxview/tests/browser/browser_firefoxview_virtual_list.js
index bf53796ef7..e9502079d9 100644
--- a/browser/components/firefoxview/tests/browser/browser_firefoxview_virtual_list.js
+++ b/browser/components/firefoxview/tests/browser/browser_firefoxview_virtual_list.js
@@ -32,7 +32,9 @@ add_task(async function test_max_render_count_on_win_resize() {
     await navigateToViewAndWait(document, "history");
 
     let historyComponent = document.querySelector("view-history");
-    let tabList = historyComponent.lists[0];
+    let tabList = await TestUtils.waitForCondition(
+      () => historyComponent.lists[0]
+    );
     let rootVirtualList = tabList.rootVirtualListEl;
 
     const initialHeight = window.outerHeight;
diff --git a/browser/components/firefoxview/tests/browser/browser_history_firefoxview.js b/browser/components/firefoxview/tests/browser/browser_history_firefoxview.js
index 847ce4d9fd..0bbc009eab 100644
--- a/browser/components/firefoxview/tests/browser/browser_history_firefoxview.js
+++ b/browser/components/firefoxview/tests/browser/browser_history_firefoxview.js
@@ -57,15 +57,11 @@ function isElInViewport(element) {
 
 async function historyComponentReady(historyComponent, expectedHistoryItems) {
   await TestUtils.waitForCondition(
-    () =>
-      [...historyComponent.controller.allHistoryItems.values()].reduce(
-        (acc, { length }) => acc + length,
-        0
-      ) === expectedHistoryItems,
+    () => historyComponent.controller.totalVisitsCount === expectedHistoryItems,
     "History component ready"
   );
 
-  let expected = historyComponent.controller.historyMapByDate.length;
+  let expected = historyComponent.controller.historyVisits.length;
   let actual = historyComponent.cards.length;
 
   is(expected, actual, `Total number of cards should be ${expected}`);
@@ -242,8 +238,7 @@ add_task(async function test_list_ordering() {
     await TestUtils.waitForCondition(() => historyComponent.fullyUpdated);
     await sortHistoryTelemetry(sortHistoryEvent);
 
-    let expectedNumOfCards =
-      historyComponent.controller.historyMapBySite.length;
+    let expectedNumOfCards = historyComponent.controller.historyVisits.length;
 
     info(`Total number of cards should be ${expectedNumOfCards}`);
     await BrowserTestUtils.waitForMutationCondition(
@@ -475,7 +470,7 @@ add_task(async function test_search_history() {
     EventUtils.sendString("Bogus Query", content);
     await TestUtils.waitForCondition(() => {
       const tabList = historyComponent.lists[0];
-      return tabList?.shadowRoot.querySelector("fxview-empty-state");
+      return tabList?.emptyState;
     }, "There are no matching search results.");
 
     info("Clear the search query.");
@@ -485,7 +480,7 @@ add_task(async function test_search_history() {
       { childList: true, subtree: true },
       () =>
         historyComponent.cards.length ===
-        historyComponent.controller.historyMapByDate.length
+        historyComponent.controller.historyVisits.length
     );
     searchTextbox.blur();
 
@@ -494,7 +489,7 @@ add_task(async function test_search_history() {
     EventUtils.sendString("Bogus Query", content);
     await TestUtils.waitForCondition(() => {
       const tabList = historyComponent.lists[0];
-      return tabList?.shadowRoot.querySelector("fxview-empty-state");
+      return tabList?.emptyState;
     }, "There are no matching search results.");
 
     info("Clear the search query with keyboard.");
@@ -514,11 +509,69 @@ add_task(async function test_search_history() {
       { childList: true, subtree: true },
       () =>
         historyComponent.cards.length ===
-        historyComponent.controller.historyMapByDate.length
+        historyComponent.controller.historyVisits.length
     );
   });
 });
 
+add_task(async function test_search_ignores_stale_queries() {
+  await PlacesUtils.history.clear();
+  const historyEntries = createHistoryEntries();
+  await PlacesUtils.history.insertMany(historyEntries);
+
+  let bogusQueryInProgress = false;
+  const searchDeferred = Promise.withResolvers();
+  const realDatabase = await PlacesUtils.promiseLargeCacheDBConnection();
+  const mockDatabase = {
+    executeCached: async (sql, options) => {
+      if (options.query === "Bogus Query") {
+        bogusQueryInProgress = true;
+        await searchDeferred.promise;
+      }
+      return realDatabase.executeCached(sql, options);
+    },
+    interrupt: () => searchDeferred.reject(),
+  };
+  const stub = sinon
+    .stub(PlacesUtils, "promiseLargeCacheDBConnection")
+    .resolves(mockDatabase);
+
+  await withFirefoxView({}, async browser => {
+    const { document } = browser.contentWindow;
+    await navigateToViewAndWait(document, "history");
+    const historyComponent = document.querySelector("view-history");
+    historyComponent.profileAge = 8;
+    await historyComponentReady(historyComponent, historyEntries.length);
+    const searchTextbox = await TestUtils.waitForCondition(
+      () => historyComponent.searchTextbox,
+      "The search textbox is displayed."
+    );
+
+    info("Input a bogus search query.");
+    EventUtils.synthesizeMouseAtCenter(searchTextbox, {}, content);
+    EventUtils.sendString("Bogus Query", content);
+    await TestUtils.waitForCondition(() => bogusQueryInProgress);
+
+    info("Clear the bogus query.");
+    EventUtils.synthesizeMouseAtCenter(searchTextbox.clearButton, {}, content);
+    await searchTextbox.updateComplete;
+
+    info("Input a real search query.");
+    EventUtils.synthesizeMouseAtCenter(searchTextbox, {}, content);
+    EventUtils.sendString("Example Domain 1", content);
+    await TestUtils.waitForCondition(() => {
+      const { rowEls } = historyComponent.lists[0];
+      return rowEls.length === 1 && rowEls[0].mainEl.href === URLs[1];
+    }, "There is one matching search result.");
+    searchDeferred.resolve();
+    await TestUtils.waitForTick();
+    const tabList = historyComponent.lists[0];
+    ok(!tabList.emptyState, "Empty state should not be shown.");
+  });
+
+  stub.restore();
+});
+
 add_task(async function test_persist_collapse_card_after_view_change() {
   await PlacesUtils.history.clear();
   await addHistoryItems(today);
@@ -528,11 +581,7 @@ add_task(async function test_persist_collapse_card_after_view_change() {
     const historyComponent = document.querySelector("view-history");
     historyComponent.profileAge = 8;
     await TestUtils.waitForCondition(
-      () =>
-        [...historyComponent.controller.allHistoryItems.values()].reduce(
-          (acc, { length }) => acc + length,
-          0
-        ) === 4
+      () => historyComponent.controller.totalVisitsCount === 4
     );
     let firstHistoryCard = historyComponent.cards[0];
     ok(
diff --git a/browser/components/firefoxview/tests/browser/browser_notification_dot.js b/browser/components/firefoxview/tests/browser/browser_notification_dot.js
deleted file mode 100644
index 0fa747d40f..0000000000
--- a/browser/components/firefoxview/tests/browser/browser_notification_dot.js
+++ /dev/null
@@ -1,392 +0,0 @@
-/* Any copyright is dedicated to the Public Domain.
- * http://creativecommons.org/publicdomain/zero/1.0/ */
-
-const tabsList1 = syncedTabsData1[0].tabs;
-const tabsList2 = syncedTabsData1[1].tabs;
-const BADGE_TOP_RIGHT = "75% 25%";
-
-const { SyncedTabs } = ChromeUtils.importESModule(
-  "resource://services-sync/SyncedTabs.sys.mjs"
-);
-
-function setupRecentDeviceListMocks() {
-  const sandbox = sinon.createSandbox();
-  sandbox.stub(fxAccounts.device, "recentDeviceList").get(() => [
-    {
-      id: 1,
-      name: "My desktop",
-      isCurrentDevice: true,
-      type: "desktop",
-      tabs: [],
-    },
-    {
-      id: 2,
-      name: "My iphone",
-      type: "mobile",
-      tabs: [],
-    },
-  ]);
-
-  sandbox.stub(UIState, "get").returns({
-    status: UIState.STATUS_SIGNED_IN,
-    syncEnabled: true,
-  });
-
-  return sandbox;
-}
-
-function waitForWindowActive(win, active) {
-  info("Waiting for window activation");
-  return Promise.all([
-    BrowserTestUtils.waitForEvent(win, active ? "focus" : "blur"),
-    BrowserTestUtils.waitForEvent(win, active ? "activate" : "deactivate"),
-  ]);
-}
-
-async function waitForNotificationBadgeToBeShowing(fxViewButton) {
-  info("Waiting for attention attribute to be set");
-  await BrowserTestUtils.waitForMutationCondition(
-    fxViewButton,
-    { attributes: true },
-    () => fxViewButton.hasAttribute("attention")
-  );
-  return fxViewButton.hasAttribute("attention");
-}
-
-async function waitForNotificationBadgeToBeHidden(fxViewButton) {
-  info("Waiting for attention attribute to be removed");
-  await BrowserTestUtils.waitForMutationCondition(
-    fxViewButton,
-    { attributes: true },
-    () => !fxViewButton.hasAttribute("attention")
-  );
-  return !fxViewButton.hasAttribute("attention");
-}
-
-async function clickFirefoxViewButton(win) {
-  await BrowserTestUtils.synthesizeMouseAtCenter(
-    "#firefox-view-button",
-    { type: "mousedown" },
-    win.browsingContext
-  );
-}
-
-function getBackgroundPositionForElement(ele) {
-  let style = ele.ownerGlobal.getComputedStyle(ele);
-  return style.getPropertyValue("background-position");
-}
-
-let previousFetchTime = 0;
-
-async function resetSyncedTabsLastFetched() {
-  Services.prefs.clearUserPref("services.sync.lastTabFetch");
-  previousFetchTime = 0;
-  await TestUtils.waitForTick();
-}
-
-async function initTabSync() {
-  let recentFetchTime = Math.floor(Date.now() / 1000);
-  // ensure we don't try to set the pref with the same value, which will not produce
-  // the expected pref change effects
-  while (recentFetchTime == previousFetchTime) {
-    await TestUtils.waitForTick();
-    recentFetchTime = Math.floor(Date.now() / 1000);
-  }
-  Assert.greater(
-    recentFetchTime,
-    previousFetchTime,
-    "The new lastTabFetch value is greater than the previous"
-  );
-
-  info("initTabSync, updating lastFetch:" + recentFetchTime);
-  Services.prefs.setIntPref("services.sync.lastTabFetch", recentFetchTime);
-  previousFetchTime = recentFetchTime;
-  await TestUtils.waitForTick();
-}
-
-add_setup(async function () {
-  await resetSyncedTabsLastFetched();
-  await SpecialPowers.pushPrefEnv({
-    set: [["browser.tabs.firefox-view.notify-for-tabs", true]],
-  });
-
-  // Clear any synced tabs from previous tests
-  FirefoxViewNotificationManager.syncedTabs = null;
-  Services.obs.notifyObservers(
-    null,
-    "firefoxview-notification-dot-update",
-    "false"
-  );
-});
-
-/**
- * Test that the notification badge will show and hide in the correct cases
- */
-add_task(async function testNotificationDot() {
-  const sandbox = setupRecentDeviceListMocks();
-  const syncedTabsMock = sandbox.stub(SyncedTabs, "getRecentTabs");
-  sandbox.spy(SyncedTabs, "syncTabs");
-
-  let win = await BrowserTestUtils.openNewBrowserWindow();
-  let fxViewBtn = win.document.getElementById("firefox-view-button");
-  ok(fxViewBtn, "Got the Firefox View button");
-
-  // Initiate a synced tabs update with new tabs
-  syncedTabsMock.returns(tabsList1);
-  await initTabSync();
-
-  ok(
-    BrowserTestUtils.isVisible(fxViewBtn),
-    "The Firefox View button is showing"
-  );
-
-  info(
-    "testNotificationDot, button is showing, badge should be initially hidden"
-  );
-  ok(
-    await waitForNotificationBadgeToBeHidden(fxViewBtn),
-    "The notification badge is not showing initially"
-  );
-
-  // Initiate a synced tabs update with new tabs
-  syncedTabsMock.returns(tabsList2);
-  await initTabSync();
-
-  ok(
-    await waitForNotificationBadgeToBeShowing(fxViewBtn),
-    "The notification badge is showing after first tab sync"
-  );
-
-  // check that switching to the firefoxviewtab removes the badge
-  await clickFirefoxViewButton(win);
-
-  info(
-    "testNotificationDot, after clicking the button, badge should become hidden"
-  );
-  ok(
-    await waitForNotificationBadgeToBeHidden(fxViewBtn),
-    "The notification badge is not showing after going to Firefox View"
-  );
-
-  await BrowserTestUtils.waitForCondition(() => {
-    return SyncedTabs.syncTabs.calledOnce;
-  });
-
-  ok(SyncedTabs.syncTabs.calledOnce, "SyncedTabs.syncTabs() was called once");
-
-  syncedTabsMock.returns(tabsList1);
-  // Initiate a synced tabs update  with new tabs
-  await initTabSync();
-
-  // The noti badge would show but we are on a Firefox View page so no need to show the noti badge
-  info(
-    "testNotificationDot, after updating the recent tabs, badge should be hidden"
-  );
-  ok(
-    await waitForNotificationBadgeToBeHidden(fxViewBtn),
-    "The notification badge is not showing after tab sync while Firefox View is focused"
-  );
-
-  let newTab = await BrowserTestUtils.openNewForegroundTab(win.gBrowser);
-  syncedTabsMock.returns(tabsList2);
-  await initTabSync();
-
-  ok(
-    await waitForNotificationBadgeToBeShowing(fxViewBtn),
-    "The notification badge is showing after navigation to a new tab"
-  );
-
-  // check that switching back to the Firefox View tab removes the badge
-  await clickFirefoxViewButton(win);
-
-  info(
-    "testNotificationDot, after switching back to fxview, badge should be hidden"
-  );
-  ok(
-    await waitForNotificationBadgeToBeHidden(fxViewBtn),
-    "The notification badge is not showing after focusing the Firefox View tab"
-  );
-
-  await BrowserTestUtils.switchTab(win.gBrowser, newTab);
-
-  // Initiate a synced tabs update with no new tabs
-  await initTabSync();
-
-  info(
-    "testNotificationDot, after switching back to fxview with no new tabs, badge should be hidden"
-  );
-  ok(
-    await waitForNotificationBadgeToBeHidden(fxViewBtn),
-    "The notification badge is not showing after a tab sync with the same tabs"
-  );
-
-  await BrowserTestUtils.closeWindow(win);
-
-  sandbox.restore();
-});
-
-/**
- * Tests the notification badge with multiple windows
- */
-add_task(async function testNotificationDotOnMultipleWindows() {
-  const sandbox = setupRecentDeviceListMocks();
-
-  await resetSyncedTabsLastFetched();
-  const syncedTabsMock = sandbox.stub(SyncedTabs, "getRecentTabs");
-
-  // Create a new window
-  let win1 = await BrowserTestUtils.openNewBrowserWindow();
-  await win1.delayedStartupPromise;
-  let fxViewBtn = win1.document.getElementById("firefox-view-button");
-  ok(fxViewBtn, "Got the Firefox View button");
-
-  syncedTabsMock.returns(tabsList1);
-  // Initiate a synced tabs update
-  await initTabSync();
-
-  // Create another window
-  let win2 = await BrowserTestUtils.openNewBrowserWindow();
-  await win2.delayedStartupPromise;
-  let fxViewBtn2 = win2.document.getElementById("firefox-view-button");
-
-  await clickFirefoxViewButton(win2);
-
-  // Make sure the badge doesn't show on any window
-  info(
-    "testNotificationDotOnMultipleWindows, badge is initially hidden on window 1"
-  );
-  ok(
-    await waitForNotificationBadgeToBeHidden(fxViewBtn),
-    "The notification badge is not showing in the inital window"
-  );
-  info(
-    "testNotificationDotOnMultipleWindows, badge is initially hidden on window 2"
-  );
-  ok(
-    await waitForNotificationBadgeToBeHidden(fxViewBtn2),
-    "The notification badge is not showing in the second window"
-  );
-
-  // Minimize the window.
-  win2.minimize();
-
-  await TestUtils.waitForCondition(
-    () => !win2.gBrowser.selectedBrowser.docShellIsActive,
-    "Waiting for docshell to be marked as inactive after minimizing the window"
-  );
-
-  syncedTabsMock.returns(tabsList2);
-  info("Initiate a synced tabs update with new tabs");
-  await initTabSync();
-
-  // The badge will show because the View tab is minimized
-  // Make sure the badge shows on all windows
-  info(
-    "testNotificationDotOnMultipleWindows, after new synced tabs and minimized win2, badge is visible on window 1"
-  );
-  ok(
-    await waitForNotificationBadgeToBeShowing(fxViewBtn),
-    "The notification badge is showing in the initial window"
-  );
-  info(
-    "testNotificationDotOnMultipleWindows, after new synced tabs and minimized win2, badge is visible on window 2"
-  );
-  ok(
-    await waitForNotificationBadgeToBeShowing(fxViewBtn2),
-    "The notification badge is showing in the second window"
-  );
-
-  win2.restore();
-  await TestUtils.waitForCondition(
-    () => win2.gBrowser.selectedBrowser.docShellIsActive,
-    "Waiting for docshell to be marked as active after restoring the window"
-  );
-
-  await BrowserTestUtils.closeWindow(win1);
-  await BrowserTestUtils.closeWindow(win2);
-
-  sandbox.restore();
-});
-
-/**
- * Tests the notification badge is in the correct spot and that the badge shows when opening a new window
- * if another window is showing the badge
- */
-add_task(async function testNotificationDotLocation() {
-  const sandbox = setupRecentDeviceListMocks();
-  await resetSyncedTabsLastFetched();
-  const syncedTabsMock = sandbox.stub(SyncedTabs, "getRecentTabs");
-
-  syncedTabsMock.returns(tabsList1);
-
-  let win1 = await BrowserTestUtils.openNewBrowserWindow();
-  let fxViewBtn = win1.document.getElementById("firefox-view-button");
-  ok(fxViewBtn, "Got the Firefox View button");
-
-  // Initiate a synced tabs update
-  await initTabSync();
-  syncedTabsMock.returns(tabsList2);
-  // Initiate another synced tabs update
-  await initTabSync();
-
-  ok(
-    await waitForNotificationBadgeToBeShowing(fxViewBtn),
-    "The notification badge is showing initially"
-  );
-
-  // Create a new window
-  let win2 = await BrowserTestUtils.openNewBrowserWindow();
-  await win2.delayedStartupPromise;
-
-  // Make sure the badge is showing on the new window
-  let fxViewBtn2 = win2.document.getElementById("firefox-view-button");
-  ok(
-    await waitForNotificationBadgeToBeShowing(fxViewBtn2),
-    "The notification badge is showing in the second window after opening"
-  );
-
-  // Make sure the badge is below and center now
-  isnot(
-    getBackgroundPositionForElement(fxViewBtn),
-    BADGE_TOP_RIGHT,
-    "The notification badge is not showing in the top right in the initial window"
-  );
-  isnot(
-    getBackgroundPositionForElement(fxViewBtn2),
-    BADGE_TOP_RIGHT,
-    "The notification badge is not showing in the top right in the second window"
-  );
-
-  CustomizableUI.addWidgetToArea(
-    "firefox-view-button",
-    CustomizableUI.AREA_NAVBAR
-  );
-
-  // Make sure both windows still have the notification badge
-  ok(
-    await waitForNotificationBadgeToBeShowing(fxViewBtn),
-    "The notification badge is showing in the initial window"
-  );
-  ok(
-    await waitForNotificationBadgeToBeShowing(fxViewBtn2),
-    "The notification badge is showing in the second window"
-  );
-
-  // Make sure the badge is in the top right now
-  is(
-    getBackgroundPositionForElement(fxViewBtn),
-    BADGE_TOP_RIGHT,
-    "The notification badge is showing in the top right in the initial window"
-  );
-  is(
-    getBackgroundPositionForElement(fxViewBtn2),
-    BADGE_TOP_RIGHT,
-    "The notification badge is showing in the top right in the second window"
-  );
-
-  CustomizableUI.reset();
-  await BrowserTestUtils.closeWindow(win1);
-  await BrowserTestUtils.closeWindow(win2);
-
-  sandbox.restore();
-});
diff --git a/browser/components/firefoxview/tests/browser/browser_syncedtabs_firefoxview.js b/browser/components/firefoxview/tests/browser/browser_syncedtabs_firefoxview.js
index 1bf387f578..872efd37a0 100644
--- a/browser/components/firefoxview/tests/browser/browser_syncedtabs_firefoxview.js
+++ b/browser/components/firefoxview/tests/browser/browser_syncedtabs_firefoxview.js
@@ -13,6 +13,11 @@ add_setup(async function () {
   registerCleanupFunction(async function () {
     await tearDown(gSandbox);
   });
+
+  // set tab sync false so we don't skip setup states
+  await SpecialPowers.pushPrefEnv({
+    set: [["services.sync.engine.tabs", false]],
+  });
 });
 
 async function promiseTabListsUpdated({ tabLists }) {
@@ -748,3 +753,158 @@ add_task(async function search_synced_tabs_recent_browsing() {
   await SpecialPowers.popPrefEnv();
   await tearDown(sandbox);
 });
+
+add_task(async function test_mobile_connected() {
+  Services.prefs.setBoolPref("services.sync.engine.tabs", false);
+  const sandbox = setupMocks({
+    state: UIState.STATUS_SIGNED_IN,
+    fxaDevices: [
+      {
+        id: 1,
+        name: "This Device",
+        isCurrentDevice: true,
+        type: "desktop",
+        tabs: [],
+      },
+      {
+        id: 2,
+        name: "Other Device",
+        type: "mobile",
+        tabs: [],
+      },
+    ],
+  });
+  await withFirefoxView({}, async browser => {
+    const { document } = browser.contentWindow;
+    // ensure tab sync is false so we don't skip onto next step
+    ok(
+      !Services.prefs.getBoolPref("services.sync.engine.tabs", false),
+      "services.sync.engine.tabs is initially false"
+    );
+
+    Services.obs.notifyObservers(null, UIState.ON_UPDATE);
+    await navigateToViewAndWait(document, "syncedtabs");
+
+    is(fxAccounts.device.recentDeviceList?.length, 2, "2 devices connected");
+    ok(
+      fxAccounts.device.recentDeviceList?.some(
+        device => device.type == "mobile"
+      ),
+      "A connected device is type:mobile"
+    );
+  });
+  await tearDown(sandbox);
+  Services.prefs.setBoolPref("services.sync.engine.tabs", true);
+});
+
+add_task(async function test_tablet_connected() {
+  Services.prefs.setBoolPref("services.sync.engine.tabs", false);
+  const sandbox = setupMocks({
+    state: UIState.STATUS_SIGNED_IN,
+    fxaDevices: [
+      {
+        id: 1,
+        name: "This Device",
+        isCurrentDevice: true,
+        type: "desktop",
+        tabs: [],
+      },
+      {
+        id: 2,
+        name: "Other Device",
+        type: "tablet",
+        tabs: [],
+      },
+    ],
+  });
+  await withFirefoxView({}, async browser => {
+    const { document } = browser.contentWindow;
+    // ensure tab sync is false so we don't skip onto next step
+    ok(
+      !Services.prefs.getBoolPref("services.sync.engine.tabs", false),
+      "services.sync.engine.tabs is initially false"
+    );
+
+    Services.obs.notifyObservers(null, UIState.ON_UPDATE);
+    await navigateToViewAndWait(document, "syncedtabs");
+
+    is(fxAccounts.device.recentDeviceList?.length, 2, "2 devices connected");
+    ok(
+      fxAccounts.device.recentDeviceList?.some(
+        device => device.type == "tablet"
+      ),
+      "A connected device is type:tablet"
+    );
+  });
+  await tearDown(sandbox);
+  Services.prefs.setBoolPref("services.sync.engine.tabs", true);
+});
+
+add_task(async function test_tab_sync_enabled() {
+  const sandbox = setupMocks({
+    state: UIState.STATUS_SIGNED_IN,
+    fxaDevices: [
+      {
+        id: 1,
+        name: "This Device",
+        isCurrentDevice: true,
+        type: "desktop",
+        tabs: [],
+      },
+      {
+        id: 2,
+        name: "Other Device",
+        type: "mobile",
+        tabs: [],
+      },
+    ],
+  });
+  await withFirefoxView({}, async browser => {
+    const { document } = browser.contentWindow;
+    Services.obs.notifyObservers(null, UIState.ON_UPDATE);
+    let syncedTabsComponent = document.querySelector(
+      "view-syncedtabs:not([slot=syncedtabs])"
+    );
+
+    // test initial state, with the pref not enabled
+    await navigateToViewAndWait(document, "syncedtabs");
+    // test with the pref toggled on
+    Services.prefs.setBoolPref("services.sync.engine.tabs", true);
+    await TestUtils.waitForCondition(
+      () => syncedTabsComponent.fullyUpdated,
+      "Synced tabs component is fully updated."
+    );
+    ok(!syncedTabsComponent.emptyState, "No empty state is being displayed.");
+
+    // reset and test clicking the action button
+    Services.prefs.setBoolPref("services.sync.engine.tabs", false);
+    await TestUtils.waitForCondition(
+      () => syncedTabsComponent.fullyUpdated,
+      "Synced tabs component is fully updated."
+    );
+    await TestUtils.waitForCondition(
+      () => syncedTabsComponent.emptyState,
+      "The empty state is rendered."
+    );
+
+    const actionButton = syncedTabsComponent.emptyState?.querySelector(
+      "button[data-action=sync-tabs-disabled]"
+    );
+    EventUtils.synthesizeMouseAtCenter(actionButton, {}, browser.contentWindow);
+    await TestUtils.waitForCondition(
+      () => syncedTabsComponent.fullyUpdated,
+      "Synced tabs component is fully updated."
+    );
+    await TestUtils.waitForCondition(
+      () => !syncedTabsComponent.emptyState,
+      "The empty state is rendered."
+    );
+
+    ok(true, "The empty state is no longer displayed when sync is enabled");
+    ok(
+      Services.prefs.getBoolPref("services.sync.engine.tabs", false),
+      "tab sync pref should be enabled after button click"
+    );
+  });
+  await tearDown(sandbox);
+});
diff --git a/browser/components/firefoxview/tests/chrome/test_fxview_tab_list.html b/browser/components/firefoxview/tests/chrome/test_fxview_tab_list.html
index 52ddc277c7..abea8725ee 100644
--- a/browser/components/firefoxview/tests/chrome/test_fxview_tab_list.html
+++ b/browser/components/firefoxview/tests/chrome/test_fxview_tab_list.html
@@ -37,8 +37,8 @@
   const { BrowserTestUtils } = ChromeUtils.importESModule(
     "resource://testing-common/BrowserTestUtils.sys.mjs"
   );
-  const { FirefoxViewPlacesQuery } = ChromeUtils.importESModule(
-    "resource:///modules/firefox-view-places-query.sys.mjs"
+  const { PlacesQuery } = ChromeUtils.importESModule(
+    "resource://gre/modules/PlacesQuery.sys.mjs"
   );
   const { PlacesUtils } = ChromeUtils.importESModule(
     "resource://gre/modules/PlacesUtils.sys.mjs"
@@ -52,7 +52,7 @@
 
   const fxviewTabList = document.querySelector("fxview-tab-list");
   let tabItems = [];
-  const placesQuery = new FirefoxViewPlacesQuery();
+  const placesQuery = new PlacesQuery();
 
   const URLs = [
     "http://mochi.test:8888/browser/",
@@ -106,7 +106,20 @@
     });
     await historyUpdated.promise;
 
-    fxviewTabList.tabItems = [...history.values()].flat();
+    fxviewTabList.tabItems = Array.from(history.values()).flat().map(visit => ({
+      ...visit,
+      time: visit.date.getTime(),
+      title: visit.title || visit.url,
+      icon: `page-icon:${visit.url}`,
+      primaryL10nId: "fxviewtabrow-tabs-list-tab",
+      primaryL10nArgs: JSON.stringify({
+        targetURI: visit.url,
+      }),
+      secondaryL10nId: "fxviewtabrow-options-menu-button",
+      secondaryL10nArgs: JSON.stringify({
+        tabTitle: visit.title || visit.url,
+      }),
+    }));
 
     await fxviewTabList.getUpdateComplete();
     tabItems = Array.from(fxviewTabList.rowEls);