[fenix] For https://github.com/mozilla-mobile/fenix/issues/10240 - New preferences to control gesture based features

Three new settings and one for which this patch just pre-lands the strings.
The behavior for the "Swipe toolbar up to open tabs" is to be added as part of
a later ticket.

app/src/main/java/org/mozilla/fenix/browser/BaseBrowserFragment.kt

@@ -657,9 +657,9 @@ abstract class BaseBrowserFragment : Fragment(), UserInteractionHandler, Session
                 }
             }
 
-            view.swipeRefresh.isEnabled = FeatureFlags.pullToRefreshEnabled
+            view.swipeRefresh.isEnabled =
-            @Suppress("ConstantConditionIf")
+                FeatureFlags.pullToRefreshEnabled && context.settings().isPullToRefreshEnabledInBrowser
-            if (FeatureFlags.pullToRefreshEnabled) {
+            if (view.swipeRefresh.isEnabled) {
                 val primaryTextColor =
                     ThemeManager.resolveAttribute(R.attr.primaryText, context)
                 view.swipeRefresh.setColorSchemeColors(primaryTextColor)

app/src/main/java/org/mozilla/fenix/browser/BrowserFragment.kt

@@ -72,6 +72,7 @@ class BrowserFragment : BaseBrowserFragment(), UserInteractionHandler {
         val components = context.components
 
         return super.initializeUI(view)?.also {
+            if (context.settings().isSwipeToolbarToSwitchTabsEnabled) {
                 gestureLayout.addGestureListener(
                     ToolbarGestureHandler(
                         activity = requireActivity(),
@@ -81,6 +82,7 @@ class BrowserFragment : BaseBrowserFragment(), UserInteractionHandler {
                         sessionManager = components.core.sessionManager
                     )
                 )
+            }
 
             val readerModeAction =
                 BrowserToolbar.ToggleButton(

app/src/main/java/org/mozilla/fenix/components/toolbar/BrowserToolbarView.kt

@@ -209,7 +209,8 @@ class BrowserToolbarView(
         when (settings.toolbarPosition) {
             ToolbarPosition.BOTTOM -> {
                 (view.layoutParams as CoordinatorLayout.LayoutParams).apply {
-                    (behavior as BrowserToolbarBottomBehavior).forceExpand(view)
+                    // behavior can be null if the "Scroll to hide toolbar" setting is toggled off.
+                    (behavior as? BrowserToolbarBottomBehavior)?.forceExpand(view)
                 }
             }
             ToolbarPosition.TOP -> {
@@ -220,7 +221,8 @@ class BrowserToolbarView(
 
     /**
      * Dynamically sets scroll flags for the toolbar when the user does not have a screen reader enabled
-     * Note that the bottom toolbar has a feature flag for being dynamic, so it may not get flags set.
+     * Note that the toolbar will have the flags set and be able to be hidden
+     * only if the user didn't disabled this behavior in app's settings.
      */
     fun setScrollFlags(shouldDisableScroll: Boolean = false) {
         when (settings.toolbarPosition) {
@@ -231,7 +233,10 @@ class BrowserToolbarView(
             }
             ToolbarPosition.TOP -> {
                 view.updateLayoutParams<AppBarLayout.LayoutParams> {
-                    scrollFlags = if (settings.shouldUseFixedTopToolbar || shouldDisableScroll) {
+                    scrollFlags =
+                        if (settings.shouldUseFixedTopToolbar ||
+                            !settings.isDynamicToolbarEnabled ||
+                            shouldDisableScroll) {
                         // Force expand the toolbar so the user is not stuck with a hidden toolbar
                         expand()
                         0

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

@@ -51,6 +51,7 @@ class CustomizationFragment : PreferenceFragmentCompat() {
         setupRadioGroups()
         setupToolbarCategory()
         setupHomeCategory()
+        setupGesturesCategory()
     }
 
     private fun setupRadioGroups() {
@@ -144,4 +145,20 @@ class CustomizationFragment : PreferenceFragmentCompat() {
             onPreferenceChangeListener = SharedPreferenceUpdater()
         }
     }
+
+    private fun setupGesturesCategory() {
+        requirePreference<SwitchPreference>(R.string.pref_key_website_pull_to_refresh).apply {
+            isVisible = FeatureFlags.pullToRefreshEnabled
+            isChecked = context.settings().isPullToRefreshEnabledInBrowser
+            onPreferenceChangeListener = SharedPreferenceUpdater()
+        }
+        requirePreference<SwitchPreference>(R.string.pref_key_dynamic_toolbar).apply {
+            isChecked = context.settings().isDynamicToolbarEnabled
+            onPreferenceChangeListener = SharedPreferenceUpdater()
+        }
+        requirePreference<SwitchPreference>(R.string.pref_key_swipe_toolbar_switch_tabs).apply {
+            isChecked = context.settings().isSwipeToolbarToSwitchTabsEnabled
+            onPreferenceChangeListener = SharedPreferenceUpdater()
+        }
+    }
 }

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

@@ -888,4 +888,19 @@ class Settings(private val appContext: Context) : PreferencesHolder {
                     SavedLoginsSortingStrategyMenu.Item.LastUsedSort.strategyString
             }
         }
+
+    var isPullToRefreshEnabledInBrowser by booleanPreference(
+        appContext.getPreferenceKey(R.string.pref_key_website_pull_to_refresh),
+        default = true
+    )
+
+    var isDynamicToolbarEnabled by booleanPreference(
+        appContext.getPreferenceKey(R.string.pref_key_dynamic_toolbar),
+        default = true
+    )
+
+    var isSwipeToolbarToSwitchTabsEnabled by booleanPreference(
+        appContext.getPreferenceKey(R.string.pref_key_swipe_toolbar_switch_tabs),
+        default = true
+    )
 }

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

@@ -125,6 +125,12 @@
     <!-- Customization Settings -->
     <string name="pref_home_category" translatable="false">pref_home_category</string>
 
+    <!-- Customization Settings -->
+    <string name="pref_key_website_pull_to_refresh" translatable="false">pref_key_website_pull_to_refresh</string>
+    <string name="pref_key_dynamic_toolbar" translatable="false">pref_key_dynamic_toolbar</string>
+    <string name="pref_key_swipe_toolbar_switch_tabs" translatable="false">pref_key_swipe_toolbar_switch_tabs</string>
+    <string name="pref_key_swipe_toolbar_show_tabs" translatable="false">pref_key_swipe_toolbar_show_tabs</string>
+
     <!-- Tracking Protection Settings -->
     <string name="pref_key_etp_learn_more" translatable="false">pref_key_etp_learn_more</string>
     <string name="pref_key_tracking_protection_settings" translatable="false">pref_key_tracking_protection_settings</string>

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

@@ -284,6 +284,8 @@
     <string name="preferences_theme">Theme</string>
     <!-- Preference for customizing the home screen -->
     <string name="preferences_home">Home</string>
+    <!-- Preference for gestures based actions -->
+    <string name="preferences_gestures">Gestures</string>
     <!-- Preference for settings related to visual options -->
     <string name="preferences_customize">Customize</string>
     <!-- Preference description for banner about signing in -->
@@ -453,6 +455,16 @@
     <!-- Preference for using following device theme -->
     <string name="preference_follow_device_theme">Follow device theme</string>
 
+    <!-- Gestures Preferences-->
+    <!-- Preferences for using pull to refresh in a webpage -->
+    <string name="preference_gestures_website_pull_to_refresh">Pull to refresh</string>
+    <!-- Preference for using the dynamic toolbar -->
+    <string name="preference_gestures_dynamic_toolbar">Scroll to hide toolbar</string>
+    <!-- Preference for switching tabs by swiping horizontally on the toolbar -->
+    <string name="preference_gestures_swipe_toolbar_switch_tabs">Swipe toolbar sideways to switch tabs</string>
+    <!-- Preference for showing the opened tabs by swiping up on the toolbar-->
+    <string name="preference_gestures_swipe_toolbar_show_tabs">Swipe toolbar up to open tabs</string>
+
     <!-- Library -->
     <!-- Option in Library to open Sessions page -->
     <string name="library_sessions">Sessions</string>

app/src/main/res/xml/customization_preferences.xml

@@ -56,4 +56,24 @@
             android:key="@string/pref_key_enable_top_frecent_sites"
             android:title="@string/top_sites_toggle_top_frecent_sites" />
     </androidx.preference.PreferenceCategory>
+
+    <androidx.preference.PreferenceCategory
+        android:layout="@layout/preference_cat_style"
+        android:title="@string/preferences_gestures"
+        app:allowDividerAbove="false"
+        app:iconSpaceReserved="false">
+        <androidx.preference.SwitchPreference
+            android:key="@string/pref_key_website_pull_to_refresh"
+            android:title="@string/preference_gestures_website_pull_to_refresh" />
+        <androidx.preference.SwitchPreference
+            android:key="@string/pref_key_dynamic_toolbar"
+            android:title="@string/preference_gestures_dynamic_toolbar" />
+        <androidx.preference.SwitchPreference
+            android:key="@string/pref_key_swipe_toolbar_switch_tabs"
+            android:title="@string/preference_gestures_swipe_toolbar_switch_tabs" />
+        <androidx.preference.SwitchPreference
+            android:key="@string/pref_key_swipe_toolbar_show_tabs"
+            android:title="@string/preference_gestures_swipe_toolbar_show_tabs"
+            app:isPreferenceVisible="false"/>
+    </androidx.preference.PreferenceCategory>
 </androidx.preference.PreferenceScreen>