Bug 1836339 - Add a secret setting for the Compose Top Sites

app/src/main/java/org/mozilla/fenix/FeatureFlags.kt

@@ -57,6 +57,11 @@ object FeatureFlags {
      */
     const val composeTabsTray = false
 
+    /**
+     * Enables compose on the top sites.
+     */
+    const val composeTopSites = false
+
     /**
      * Enables the save to PDF feature.
      */

app/src/main/java/org/mozilla/fenix/settings/SecretSettingsFragment.kt

@@ -58,6 +58,12 @@ class SecretSettingsFragment : PreferenceFragmentCompat() {
             onPreferenceChangeListener = SharedPreferenceUpdater()
         }
 
+        requirePreference<SwitchPreference>(R.string.pref_key_enable_compose_top_sites).apply {
+            isVisible = Config.channel.isNightlyOrDebug
+            isChecked = context.settings().enableComposeTopSites
+            onPreferenceChangeListener = SharedPreferenceUpdater()
+        }
+
         // for performance reasons, this is only available in Nightly or Debug builds
         requirePreference<EditTextPreference>(R.string.pref_key_custom_glean_server_url).apply {
             isVisible = Config.channel.isNightlyOrDebug && BuildConfig.GLEAN_CUSTOM_URL.isNullOrEmpty()

app/src/main/java/org/mozilla/fenix/utils/Settings.kt

@@ -1736,6 +1736,14 @@ class Settings(private val appContext: Context) : PreferencesHolder {
         default = FeatureFlags.composeTabsTray,
     )
 
+    /**
+     * Indicates if the Compose Top Sites are enabled.
+     */
+    var enableComposeTopSites by booleanPreference(
+        key = appContext.getPreferenceKey(R.string.pref_key_enable_compose_top_sites),
+        default = FeatureFlags.composeTopSites,
+    )
+
     /**
      * Adjust Activated User sent
      */

app/src/main/res/values/preference_keys.xml

@@ -343,6 +343,7 @@
     <string name="pref_key_custom_sponsored_stories_country" translatable="false">pref_key_custom_sponsored_stories_country</string>
     <string name="pref_key_custom_sponsored_stories_city" translatable="false">pref_key_custom_sponsored_stories_city</string>
     <string name="pref_key_shared_prefs_uuid" translatable="false">pref_key_shared_prefs_uuid</string>
+    <string name="pref_key_enable_compose_top_sites" translatable="false">pref_key_enable_compose_top_sites</string>
 
     <!-- Growth Data -->
     <string name="pref_key_growth_set_as_default" translatable="false">pref_key_growth_set_as_default</string>

app/src/main/res/values/static_strings.xml

@@ -64,6 +64,8 @@
     <string name="preferences_sync_debug_quit_button_summary">Custom server changes will take effect on the next Firefox run.</string>
     <!-- Label for enabling the Tabs Tray to Compose changes -->
     <string name="preferences_debug_settings_tabs_tray_to_compose" translatable="false">Enable Tabs Tray to Compose rewrite</string>
+    <!-- Label for enabling the Compose Top Sites -->
+    <string name="preferences_debug_settings_compose_top_sites" translatable="false">Enable Compose Top Sites</string>
 
     <!-- A secret menu option in the tabs tray for making a tab inactive for testing. -->
     <string name="inactive_tabs_menu_item">Make inactive</string>

app/src/main/res/xml/secret_settings_preferences.xml

@@ -25,6 +25,11 @@
         android:key="@string/pref_key_enable_tabs_tray_to_compose"
         android:title="@string/preferences_debug_settings_tabs_tray_to_compose"
         app:iconSpaceReserved="false" />
+    <SwitchPreference
+        android:defaultValue="false"
+        android:key="@string/pref_key_enable_compose_top_sites"
+        android:title="@string/preferences_debug_settings_compose_top_sites"
+        app:iconSpaceReserved="false" />
     <EditTextPreference
         android:key="@string/pref_key_custom_glean_server_url"
         android:title="@string/preferences_debug_settings_custom_glean_server_url"