For #23808 - Add secret setting for enabling Task Continuity feature

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

@@ -53,5 +53,11 @@ class SecretSettingsFragment : PreferenceFragmentCompat() {
             isChecked = context.settings().nimbusUsePreview
             onPreferenceChangeListener = SharedPreferenceUpdater()
         }
+
+        requirePreference<SwitchPreference>(R.string.pref_key_enable_task_continuity).apply {
+            isVisible = true
+            isChecked = context.settings().enableTaskContinuityEnhancements
+            onPreferenceChangeListener = SharedPreferenceUpdater()
+        }
     }
 }

app/src/main/java/org/mozilla/fenix/tabstray/ext/SyncedDeviceTabs.kt

@@ -6,14 +6,15 @@ package org.mozilla.fenix.tabstray.ext
 
 import mozilla.components.browser.storage.sync.SyncedDeviceTabs
 import mozilla.components.browser.toolbar.MAX_URI_LENGTH
-import org.mozilla.fenix.FeatureFlags
 import org.mozilla.fenix.tabstray.syncedtabs.SyncedTabsListItem
 
 /**
  * Converts a list of [SyncedDeviceTabs] into a list of [SyncedTabsListItem].
  */
-fun List<SyncedDeviceTabs>.toComposeList(): List<SyncedTabsListItem> = asSequence().flatMap { (device, tabs) ->
-    if (FeatureFlags.taskContinuityFeature) {
+fun List<SyncedDeviceTabs>.toComposeList(
+    taskContinuityEnabled: Boolean,
+): List<SyncedTabsListItem> = asSequence().flatMap { (device, tabs) ->
+    if (taskContinuityEnabled) {
         val deviceTabs = if (tabs.isEmpty()) {
             emptyList()
         } else {

app/src/main/java/org/mozilla/fenix/tabstray/syncedtabs/SyncedTabs.kt

@@ -48,7 +48,6 @@ import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
 import mozilla.components.browser.storage.sync.TabEntry
 import mozilla.components.feature.syncedtabs.view.SyncedTabsView
-import org.mozilla.fenix.FeatureFlags
 import org.mozilla.fenix.R
 import org.mozilla.fenix.compose.PrimaryText
 import org.mozilla.fenix.compose.SecondaryText
@@ -63,14 +62,18 @@ import mozilla.components.browser.storage.sync.Tab as SyncTab
  */
 @OptIn(ExperimentalFoundationApi::class)
 @Composable
-fun SyncedTabsList(syncedTabs: List<SyncedTabsListItem>, onTabClick: (SyncTab) -> Unit) {
+fun SyncedTabsList(
+    syncedTabs: List<SyncedTabsListItem>,
+    taskContinuityEnabled: Boolean,
+    onTabClick: (SyncTab) -> Unit,
+) {
     val listState = rememberLazyListState()
 
     LazyColumn(
         modifier = Modifier.fillMaxSize(),
         state = listState,
     ) {
-        if (FeatureFlags.taskContinuityFeature) {
+        if (taskContinuityEnabled) {
             syncedTabs.forEach { syncedTabItem ->
                 when (syncedTabItem) {
                     is SyncedTabsListItem.DeviceSection -> {
@@ -341,7 +344,8 @@ private fun SyncedTabsListPreview() {
     FirefoxTheme {
         Box(Modifier.background(FirefoxTheme.colors.layer1)) {
             SyncedTabsList(
-                getFakeSyncedTabList(),
+                syncedTabs = getFakeSyncedTabList(),
+                taskContinuityEnabled = true,
             ) {
                 println("Tab clicked")
             }

app/src/main/java/org/mozilla/fenix/tabstray/syncedtabs/SyncedTabsIntegration.kt

@@ -17,6 +17,7 @@ import mozilla.components.support.base.observer.Observable
 import mozilla.components.support.base.observer.ObserverRegistry
 import org.mozilla.fenix.NavGraphDirections
 import org.mozilla.fenix.R
+import org.mozilla.fenix.ext.settings
 import org.mozilla.fenix.tabstray.FloatingActionButtonBinding
 import org.mozilla.fenix.tabstray.TabsTrayAction
 import org.mozilla.fenix.tabstray.TabsTrayStore
@@ -90,7 +91,13 @@ class SyncedTabsIntegration(
     }
 
     override fun displaySyncedTabs(syncedTabs: List<SyncedDeviceTabs>) {
-        store.dispatch(TabsTrayAction.UpdateSyncedTabs(syncedTabs.toComposeList()))
+        store.dispatch(
+            TabsTrayAction.UpdateSyncedTabs(
+                syncedTabs.toComposeList(
+                    context.settings().enableTaskContinuityEnhancements
+                )
+            )
+        )
     }
 
     /**

app/src/main/java/org/mozilla/fenix/tabstray/viewholders/SyncedTabsPageViewHolder.kt

@@ -8,6 +8,7 @@ import android.view.View
 import androidx.compose.ui.platform.ComposeView
 import androidx.recyclerview.widget.RecyclerView
 import mozilla.components.lib.state.ext.observeAsComposableState
+import org.mozilla.fenix.ext.settings
 import org.mozilla.fenix.tabstray.NavigationInteractor
 import org.mozilla.fenix.tabstray.TabsTrayStore
 import org.mozilla.fenix.tabstray.TabsTrayState
@@ -33,7 +34,8 @@ class SyncedTabsPageViewHolder(
             FirefoxTheme {
                 SyncedTabsList(
                     syncedTabs = tabs ?: emptyList(),
-                    onTabClick = navigationInteractor::onSyncedTabClicked
+                    taskContinuityEnabled = composeView.context.settings().enableTaskContinuityEnhancements,
+                    onTabClick = navigationInteractor::onSyncedTabClicked,
                 )
             }
         }

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

@@ -1299,4 +1299,13 @@ class Settings(private val appContext: Context) : PreferencesHolder {
         default = false,
         featureFlag = FeatureFlags.contileFeature,
     )
+
+    /**
+     * Indicates if the Task Continuity enhancements are enabled.
+     */
+    var enableTaskContinuityEnhancements by featureFlagPreference(
+        key = appContext.getPreferenceKey(R.string.pref_key_enable_task_continuity),
+        default = false,
+        featureFlag = FeatureFlags.taskContinuityFeature,
+    )
 }

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

@@ -204,6 +204,8 @@
     <string name="pref_key_enable_top_frecent_sites" translatable="false">pref_key_top_frecent_sites</string>
     <!-- Whether or not the sponsored shortcuts are shown along with the top recent sites shortcuts -->
     <string name="pref_key_enable_contile" translatable="false">pref_key_enable_contile</string>
+    <!-- Whether or not the Task Continuity enhancements are shown -->
+    <string name="pref_key_enable_task_continuity" translatable="false">pref_key_enable_task_continuity</string>
 
     <!-- A value  of `true` means the PWA dialog has been showed or user already has PWAs installed -->
     <string name="pref_key_user_knows_about_pwa" translatable="false">pref_key_user_knows_about_pwa</string>

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

@@ -43,6 +43,8 @@
     <string name="preferences_nimbus_experiments">Nimbus Experiments</string>
     <!-- Label for using the nimbus collections preview -->
     <string name="preferences_nimbus_use_preview_collection">Use Nimbus Preview Collection (requires restart)</string>
+    <!-- Label for enabling the Task Continuity feature -->
+    <string name="preferences_debug_settings_task_continuity" translatable="false">Enable Task Continuity</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

@@ -25,4 +25,9 @@
         android:key="@string/pref_key_nimbus_use_preview"
         android:title="@string/preferences_nimbus_use_preview_collection"
         app:iconSpaceReserved="false" />
+    <SwitchPreference
+        android:defaultValue="false"
+        android:key="@string/pref_key_enable_task_continuity"
+        android:title="@string/preferences_debug_settings_task_continuity"
+        app:iconSpaceReserved="false" />
 </PreferenceScreen>

app/src/test/java/org/mozilla/fenix/sync/ext/SyncedDeviceTabsTest.kt

@@ -82,7 +82,7 @@ class SyncedDeviceTabsTest {
     @Test
     fun `GIVEN two synced devices WHEN the compose list is generated THEN two device section is returned`() {
         val syncedDeviceList = listOf(oneTabDevice, twoTabDevice)
-        val listData = syncedDeviceList.toComposeList()
+        val listData = syncedDeviceList.toComposeList(taskContinuityEnabled = true)
 
         assertEquals(2, listData.count())
         assertTrue(listData[0] is SyncedTabsListItem.DeviceSection)
@@ -94,7 +94,7 @@ class SyncedDeviceTabsTest {
     @Test
     fun `GIVEN one synced device with no tabs WHEN the compose list is generated THEN one device with an empty tabs list is returned`() {
         val syncedDeviceList = listOf(noTabDevice)
-        val listData = syncedDeviceList.toComposeList()
+        val listData = syncedDeviceList.toComposeList(taskContinuityEnabled = true)
 
         assertEquals(1, listData.count())
         assertTrue(listData[0] is SyncedTabsListItem.DeviceSection)