For #15115 - Part 8: Add a feature flag for showing the grid view in the tabs setting

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

@@ -26,6 +26,11 @@ object FeatureFlags {
      */
     const val topFrecentSite = true
 
+    /**
+     * Shows the grid view settings for the tabs tray.
+     */
+    val showGridViewInTabsSettings = Config.channel.isNightlyOrDebug
+
     /**
      * Enables wait til first contentful paint
      */

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

@@ -25,6 +25,12 @@ class SecretSettingsFragment : PreferenceFragmentCompat() {
     override fun onCreatePreferences(savedInstanceState: Bundle?, rootKey: String?) {
         setPreferencesFromResource(R.xml.secret_settings_preferences, rootKey)
 
+        requirePreference<SwitchPreference>(R.string.pref_key_show_grid_view_tabs_settings).apply {
+            isVisible = FeatureFlags.showGridViewInTabsSettings
+            isChecked = context.settings().showGridViewInTabsSettings
+            onPreferenceChangeListener = SharedPreferenceUpdater()
+        }
+
         requirePreference<SwitchPreference>(R.string.pref_key_enable_top_frecent_sites).apply {
             isVisible = FeatureFlags.topFrecentSite
             isChecked = context.settings().showTopFrecentSites

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

@@ -5,8 +5,10 @@
 package org.mozilla.fenix.settings
 
 import android.os.Bundle
+import androidx.preference.PreferenceCategory
 import androidx.preference.PreferenceFragmentCompat
 import org.mozilla.fenix.R
+import org.mozilla.fenix.ext.settings
 import org.mozilla.fenix.ext.showToolbar
 import org.mozilla.fenix.utils.view.addToRadioGroup
 
@@ -41,6 +43,10 @@ class TabsSettingsFragment : PreferenceFragmentCompat() {
         radioOneMonth = requirePreference(R.string.pref_key_close_tabs_after_one_month)
 
         setupRadioGroups()
+
+        requirePreference<PreferenceCategory>(R.string.pref_key_tab_view_category).apply {
+            isVisible = context.settings().showGridViewInTabsSettings
+        }
     }
 
     private fun setupRadioGroups() {

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

@@ -124,6 +124,12 @@ class Settings(private val appContext: Context) : PreferencesHolder {
     val canShowCfr: Boolean
         get() = (System.currentTimeMillis() - lastCfrShownTimeInMillis) > THREE_DAYS_MS
 
+    var showGridViewInTabsSettings by featureFlagPreference(
+        appContext.getPreferenceKey(R.string.pref_key_show_grid_view_tabs_settings),
+        default = false,
+        featureFlag = FeatureFlags.showGridViewInTabsSettings
+    )
+
     var waitToShowPageUntilFirstPaint by featureFlagPreference(
         appContext.getPreferenceKey(R.string.pref_key_wait_first_paint),
         default = false,

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

@@ -224,6 +224,7 @@
     <string name="pref_key_show_collections_placeholder_home" translatable="false">pref_key_show_collections_home</string>
 
     <!-- Tabs Settings -->
+    <string name="pref_key_tab_view_category" translatable="false">pref_key_tab_view_category</string>
     <string name="pref_key_tab_view_list" translatable="false">pref_key_tab_view_list</string>
     <string name="pref_key_tab_view_grid" translatable="false">pref_key_tab_view_grid</string>
     <string name="pref_key_tabs" translatable="false">pref_key_tabs</string>
@@ -231,6 +232,7 @@
     <string name="pref_key_close_tabs_after_one_day" translatable="false">pref_key_close_tabs_after_one_day</string>
     <string name="pref_key_close_tabs_after_one_week" translatable="false">pref_key_close_tabs_after_one_week</string>
     <string name="pref_key_close_tabs_after_one_month" translatable="false">pref_key_close_tabs_after_one_month</string>
+    <string name="pref_key_show_grid_view_tabs_settings" translatable="false">pref_key_show_grid_view_tabs_settings</string>
 
     <string name="pref_key_camera_permissions_needed" translatable="false">pref_key_camera_permissions_needed</string>
 </resources>

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

@@ -32,6 +32,8 @@
 
     <!-- Label for the secret settings preference -->
     <string name="preferences_debug_settings">Secret Settings</string>
+    <!-- Label for the show grid view in tabs setting preference -->
+    <string name="preferences_debug_settings_show_grid_view_tabs_settings">Show Grid View in Tabs Settings</string>
     <!-- Label for the show top frequently visited sites preference -->
     <string name="preferences_debug_settings_enable_top_frecent_sites">Show Top Frequently Visited Sites</string>
     <!-- Label for the wait until first paint preference -->

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

@@ -4,6 +4,11 @@
    - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
 <PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto">
+    <SwitchPreference
+        android:defaultValue="false"
+        android:key="@string/pref_key_show_grid_view_tabs_settings"
+        android:title="@string/preferences_debug_settings_show_grid_view_tabs_settings"
+        app:iconSpaceReserved="false" />
     <SwitchPreference
         android:defaultValue="false"
         android:key="@string/pref_key_enable_top_frecent_sites"

app/src/main/res/xml/tabs_preferences.xml

@@ -5,10 +5,12 @@
 <androidx.preference.PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto">
     <androidx.preference.PreferenceCategory
+        android:key="@string/pref_key_tab_view_category"
         android:layout="@layout/preference_cat_style"
         android:title="@string/preferences_tab_view"
         app:allowDividerAbove="false"
-        app:iconSpaceReserved="false">
+        app:iconSpaceReserved="false"
+        app:isPreferenceVisible="false">
         <org.mozilla.fenix.settings.RadioButtonPreference
             android:defaultValue="true"
             android:key="@string/pref_key_tab_view_list"