Prevent Save App Pair from showing up on 3p launcher

This CL adds a check so that app pairs can't be saved on 3p launchers. This affects the Overview icon dropdown menu and the Overview Actions Bar.

Fixes: 326155701
Flag: ACONFIG com.android.wm.shell.enable_app_pairs TRUNKFOOD
Test: Manual, option does not show up when Nova Launcher is set as default home app, and shows up again for Pixel Launcher.
Change-Id: I60d6fd3b3eb39921edafb12faace743d16de270f

quickstep/src/com/android/quickstep/TaskShortcutFactory.java

@@ -328,11 +328,15 @@ public interface TaskShortcutFactory {
 
             // No "save app pair" menu item if:
             // - app pairs feature is not enabled
+            // - we are in 3p launcher
             // - the task in question is a single task
             // - at least one app in app pair is unpinnable
             // - the Overview Actions Button should be visible
-            if (!FeatureFlags.enableAppPairs() || !taskView.containsMultipleTasks()
-                    || hasUnpinnableApp || shouldShowActionsButtonInstead) {
+            if (!FeatureFlags.enableAppPairs()
+                    || !recentsView.supportsAppPairs()
+                    || !taskView.containsMultipleTasks()
+                    || hasUnpinnableApp
+                    || shouldShowActionsButtonInstead) {
                 return null;
             }
 

quickstep/src/com/android/quickstep/fallback/FallbackRecentsView.java

@@ -302,4 +302,10 @@ public class FallbackRecentsView extends RecentsView<RecentsActivity, RecentsSta
     protected boolean canLaunchFullscreenTask() {
         return !mActivity.isInState(OVERVIEW_SPLIT_SELECT);
     }
+
+    /** Returns if app pairs are supported in this launcher. */
+    @Override
+    public boolean supportsAppPairs() {
+        return false;
+    }
 }

quickstep/src/com/android/quickstep/views/OverviewActionsView.java

@@ -106,6 +106,7 @@ public class OverviewActionsView<T extends OverlayUICallbacks> extends FrameLayo
     public @interface AppPairButtonHiddenFlags { }
     public static final int FLAG_SINGLE_TASK_HIDE_APP_PAIR = 1 << 0;
     public static final int FLAG_SMALL_SCREEN_HIDE_APP_PAIR = 1 << 1;
+    public static final int FLAG_3P_LAUNCHER_HIDE_APP_PAIR = 1 << 2;
 
     private MultiValueAlpha mMultiValueAlpha;
 
@@ -254,6 +255,13 @@ public class OverviewActionsView<T extends OverlayUICallbacks> extends FrameLayo
         updateAppPairButtonHiddenFlags(FLAG_SMALL_SCREEN_HIDE_APP_PAIR, isSmallScreen);
     }
 
+    /**
+     * Updates flags to hide and show actions buttons for 1p/3p launchers.
+     */
+    public void updateFor3pLauncher(boolean is3pLauncher) {
+        updateAppPairButtonHiddenFlags(FLAG_3P_LAUNCHER_HIDE_APP_PAIR, is3pLauncher);
+    }
+
     /**
      * Updates the proper flags to indicate whether the "Screenshot" button should be hidden.
      *

quickstep/src/com/android/quickstep/views/RecentsView.java

@@ -4022,6 +4022,8 @@ public abstract class RecentsView<ACTIVITY_TYPE extends StatefulActivity<STATE_T
         mActionsView.updateForGroupedTask(isCurrentSplit);
         // Update flags to see if actions bar should show buttons for tablets or phones.
         mActionsView.updateForSmallScreen(!mActivity.getDeviceProfile().isTablet);
+        // Update flags for 1p/3p launchers
+        mActionsView.updateFor3pLauncher(!supportsAppPairs());
 
         if (isDesktopModeSupported()) {
             boolean isCurrentDesktop = getCurrentPageTaskView() instanceof DesktopTaskView;
@@ -4029,6 +4031,11 @@ public abstract class RecentsView<ACTIVITY_TYPE extends StatefulActivity<STATE_T
         }
     }
 
+    /** Returns if app pairs are supported in this launcher. Overridden in subclasses. */
+    public boolean supportsAppPairs() {
+        return true;
+    }
+
     /**
      * Returns all the tasks in the top row, without the focused task
      */