[Predictive Back] Replace legacy flag with aconfig flag in launcher

Fix: 323971106
Flag: ACONFIG launcher.enable_predictive_back_gesture DISABLED
Test: manual
Change-Id: Ie8051af2540699a7d75f1ed05132584d0b40d17d

aconfig/launcher.aconfig

@@ -91,6 +91,13 @@ flag {
     bug: "204463748"
 }
 
+flag {
+    name: "enable_predictive_back_gesture"
+    namespace: "launcher"
+    description: "Enable predictive back gesture on Launcher (including all apps and widget picker)."
+    bug: "238475505"
+}
+
 flag {
     name: "enable_shortcut_dont_suggest_app"
     namespace: "launcher"

quickstep/src/com/android/launcher3/taskbar/allapps/TaskbarAllAppsSlideInView.java

@@ -16,6 +16,7 @@
 package com.android.launcher3.taskbar.allapps;
 
 import static com.android.app.animation.Interpolators.EMPHASIZED;
+import static com.android.launcher3.Flags.enablePredictiveBackGesture;
 
 import android.animation.Animator;
 import android.content.Context;
@@ -168,7 +169,7 @@ public class TaskbarAllAppsSlideInView extends AbstractSlideInView<TaskbarOverla
     protected void onAttachedToWindow() {
         super.onAttachedToWindow();
         mActivityContext.addOnDeviceProfileChangeListener(this);
-        if (FeatureFlags.ENABLE_BACK_SWIPE_LAUNCHER_ANIMATION.get()) {
+        if (enablePredictiveBackGesture()) {
             mAppsView.getAppsRecyclerViewContainer().setOutlineProvider(mViewOutlineProvider);
             mAppsView.getAppsRecyclerViewContainer().setClipToOutline(true);
             OnBackInvokedDispatcher dispatcher = findOnBackInvokedDispatcher();
@@ -183,7 +184,7 @@ public class TaskbarAllAppsSlideInView extends AbstractSlideInView<TaskbarOverla
     protected void onDetachedFromWindow() {
         super.onDetachedFromWindow();
         mActivityContext.removeOnDeviceProfileChangeListener(this);
-        if (FeatureFlags.ENABLE_BACK_SWIPE_LAUNCHER_ANIMATION.get()) {
+        if (enablePredictiveBackGesture()) {
             mAppsView.getAppsRecyclerViewContainer().setOutlineProvider(null);
             mAppsView.getAppsRecyclerViewContainer().setClipToOutline(false);
             OnBackInvokedDispatcher dispatcher = findOnBackInvokedDispatcher();

quickstep/src/com/android/launcher3/uioverrides/QuickstepLauncher.java

@@ -61,6 +61,7 @@ import static com.android.quickstep.util.SplitAnimationTimings.TABLET_HOME_TO_SP
 import static com.android.quickstep.views.DesktopTaskView.isDesktopModeSupported;
 import static com.android.systemui.shared.system.ActivityManagerWrapper.CLOSE_SYSTEM_WINDOWS_REASON_HOME_KEY;
 import static com.android.wm.shell.common.split.SplitScreenConstants.SNAP_TO_50_50;
+import static com.android.launcher3.Flags.enablePredictiveBackGesture;
 
 import android.animation.Animator;
 import android.animation.AnimatorListenerAdapter;
@@ -645,7 +646,7 @@ public class QuickstepLauncher extends Launcher {
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
-        if (Utilities.ATLEAST_U && FeatureFlags.ENABLE_BACK_SWIPE_LAUNCHER_ANIMATION.get()) {
+        if (Utilities.ATLEAST_U && enablePredictiveBackGesture()) {
             getApplicationInfo().setEnableOnBackInvokedCallback(true);
         }
         if (savedInstanceState != null) {
@@ -833,7 +834,7 @@ public class QuickstepLauncher extends Launcher {
 
     @Override
     protected void registerBackDispatcher() {
-        if (!FeatureFlags.ENABLE_BACK_SWIPE_LAUNCHER_ANIMATION.get()) {
+        if (!enablePredictiveBackGesture()) {
             super.registerBackDispatcher();
             return;
         }

quickstep/tests/src/com/android/quickstep/TaplTestsQuickstep.java

@@ -35,9 +35,9 @@ import androidx.test.runner.AndroidJUnit4;
 import androidx.test.uiautomator.By;
 import androidx.test.uiautomator.Until;
 
+import com.android.launcher3.Flags;
 import com.android.launcher3.Launcher;
 import com.android.launcher3.LauncherState;
-import com.android.launcher3.config.FeatureFlags;
 import com.android.launcher3.tapl.LaunchedAppState;
 import com.android.launcher3.tapl.LauncherInstrumentation.NavigationModel;
 import com.android.launcher3.tapl.Overview;
@@ -394,7 +394,7 @@ public class TaplTestsQuickstep extends AbstractQuickStepTest {
                 READ_DEVICE_CONFIG_PERMISSION);
         // Debug if we need to goHome to prevent wrong previous state b/315525621
         mLauncher.goHome();
-        assumeFalse(FeatureFlags.ENABLE_BACK_SWIPE_LAUNCHER_ANIMATION.get());
+        assumeFalse(Flags.enablePredictiveBackGesture());
         mLauncher.getWorkspace().switchToAllApps().pressBackToWorkspace();
         waitForState("Launcher internal state didn't switch to Home", () -> LauncherState.NORMAL);
 

quickstep/tests/src/com/android/quickstep/TaplTestsTrackpad.java

@@ -28,7 +28,7 @@ import androidx.test.filters.LargeTest;
 import androidx.test.platform.app.InstrumentationRegistry;
 import androidx.test.runner.AndroidJUnit4;
 
-import com.android.launcher3.config.FeatureFlags;
+import com.android.launcher3.Flags;
 import com.android.launcher3.tapl.LauncherInstrumentation.TrackpadGestureType;
 import com.android.launcher3.tapl.Workspace;
 import com.android.launcher3.ui.AbstractLauncherUiTest;
@@ -77,7 +77,7 @@ public class TaplTestsTrackpad extends AbstractQuickStepTest {
     @NavigationModeSwitch(mode = ZERO_BUTTON)
     public void pressBack() throws Exception {
         assumeTrue(mLauncher.isTablet());
-        assumeFalse(FeatureFlags.ENABLE_BACK_SWIPE_LAUNCHER_ANIMATION.get());
+        assumeFalse(Flags.enablePredictiveBackGesture());
         Instrumentation instrumentation = InstrumentationRegistry.getInstrumentation();
 
         try {

src/com/android/launcher3/config/FeatureFlags.java

@@ -199,11 +199,6 @@ public final class FeatureFlags {
             "ENABLE_SMARTSPACE_REMOVAL", DISABLED, "Enable SmartSpace removal for "
             + "home screen");
 
-    // TODO(Block 10): Clean up flags
-    public static final BooleanFlag ENABLE_BACK_SWIPE_LAUNCHER_ANIMATION = getDebugFlag(270614790,
-            "ENABLE_BACK_SWIPE_LAUNCHER_ANIMATION", DISABLED,
-            "Enables predictive back animation from all apps and widgets to home");
-
     // TODO(Block 11): Clean up flags
     public static final BooleanFlag FOLDABLE_SINGLE_PAGE = getDebugFlag(270395274,
             "FOLDABLE_SINGLE_PAGE", DISABLED, "Use a single page for the workspace");

tests/src/com/android/launcher3/allapps/TaplOpenCloseAllAppsTest.java

@@ -16,7 +16,6 @@
 package com.android.launcher3.allapps;
 
 import static com.android.launcher3.util.TestUtil.expectFail;
-import static com.android.launcher3.ui.AbstractLauncherUiTest.initialize;
 
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertNotNull;
@@ -30,8 +29,8 @@ import android.platform.test.annotations.PlatinumTest;
 import androidx.test.filters.FlakyTest;
 import androidx.test.platform.app.InstrumentationRegistry;
 
+import com.android.launcher3.Flags;
 import com.android.launcher3.LauncherState;
-import com.android.launcher3.config.FeatureFlags;
 import com.android.launcher3.tapl.AllApps;
 import com.android.launcher3.ui.AbstractLauncherUiTest;
 import com.android.launcher3.ui.PortraitLandscapeRunner.PortraitLandscape;
@@ -208,7 +207,7 @@ public class TaplOpenCloseAllAppsTest extends AbstractLauncherUiTest {
     public void testPressBackFromAllAppsToHome() {
         InstrumentationRegistry.getInstrumentation().getUiAutomation().adoptShellPermissionIdentity(
                 READ_DEVICE_CONFIG_PERMISSION);
-        assumeFalse(FeatureFlags.ENABLE_BACK_SWIPE_LAUNCHER_ANIMATION.get());
+        assumeFalse(Flags.enablePredictiveBackGesture());
         mLauncher
                 .getWorkspace()
                 .switchToAllApps()