Add launcher logging of back button

Bug: 127848641
Test: adb shell setprop log.tag.UserEvent VERBOSE, then hit back
Change-Id: I020738280d2e51a8a192e577baf48c0b092f22f6

go/quickstep/src/com/android/quickstep/TouchInteractionService.java

@@ -88,6 +88,10 @@ public class TouchInteractionService extends Service {
             // TODO handle assistant
         }
 
+        public void onBackAction(boolean completed, int downX, int downY, boolean isButton,
+                boolean gestureSwipeLeft) {
+        }
+
         /** Deprecated methods **/
         public void onQuickStep(MotionEvent motionEvent) { }
 

protos/launcher_log.proto

@@ -106,7 +106,7 @@ enum ControlType {
   RESIZE_HANDLE = 8;
   VERTICAL_SCROLL = 9;
   HOME_INTENT = 10; // Deprecated, use enum Command instead
-  BACK_BUTTON = 11; // Deprecated, use enum Command instead
+  BACK_BUTTON = 11;
   QUICK_SCRUB_BUTTON = 12;
   CLEAR_ALL_BUTTON = 13;
   CANCEL_TARGET = 14;
@@ -114,6 +114,7 @@ enum ControlType {
   SPLIT_SCREEN_TARGET = 16;
   REMOTE_ACTION_SHORTCUT = 17;
   APP_USAGE_SETTINGS = 18;
+  BACK_GESTURE = 19;
 }
 
 enum TipType {

quickstep/recents_ui_overrides/src/com/android/quickstep/FallbackActivityControllerHelper.java

@@ -192,7 +192,11 @@ public final class FallbackActivityControllerHelper implements
 
     @Override
     public int getContainerType() {
-        return LauncherLogProto.ContainerType.SIDELOADED_LAUNCHER;
+        RecentsActivity activity = getCreatedActivity();
+        boolean visible = activity != null && activity.isStarted() && activity.hasWindowFocus();
+        return visible
+                ? LauncherLogProto.ContainerType.SIDELOADED_LAUNCHER
+                : LauncherLogProto.ContainerType.APP;
     }
 
     @Override

quickstep/recents_ui_overrides/src/com/android/quickstep/TouchInteractionService.java

@@ -53,6 +53,7 @@ import com.android.launcher3.MainThreadExecutor;
 import com.android.launcher3.Utilities;
 import com.android.launcher3.compat.UserManagerCompat;
 import com.android.launcher3.logging.EventLogArray;
+import com.android.launcher3.logging.UserEventDispatcher;
 import com.android.launcher3.util.LooperExecutor;
 import com.android.launcher3.util.UiThreadHelper;
 import com.android.quickstep.SysUINavigationMode.Mode;
@@ -141,6 +142,14 @@ public class TouchInteractionService extends Service implements
             });
         }
 
+        public void onBackAction(boolean completed, int downX, int downY, boolean isButton,
+                boolean gestureSwipeLeft) {
+            final ActivityControlHelper activityControl =
+                    mOverviewComponentObserver.getActivityControlHelper();
+            UserEventDispatcher.newInstance(getBaseContext()).logActionBack(completed, downX, downY,
+                    isButton, gestureSwipeLeft, activityControl.getContainerType());
+        }
+
         /** Deprecated methods **/
         public void onQuickStep(MotionEvent motionEvent) { }
 

src/com/android/launcher3/logging/UserEventDispatcher.java

@@ -34,7 +34,8 @@ import android.content.SharedPreferences;
 import android.os.SystemClock;
 import android.util.Log;
 import android.view.View;
-import android.view.ViewParent;
+
+import androidx.annotation.Nullable;
 
 import com.android.launcher3.DropTarget;
 import com.android.launcher3.ItemInfo;
@@ -54,15 +55,12 @@ import com.android.launcher3.util.ResourceBasedOverride;
 import java.util.Locale;
 import java.util.UUID;
 
-import androidx.annotation.Nullable;
-
 /**
  * Manages the creation of {@link LauncherEvent}.
  * To debug this class, execute following command before side loading a new apk.
  *
  * $ adb shell setprop log.tag.UserEvent VERBOSE
  */
-@Deprecated
 public class UserEventDispatcher implements ResourceBasedOverride {
 
     private static final String TAG = "UserEvent";
@@ -360,6 +358,27 @@ public class UserEventDispatcher implements ResourceBasedOverride {
         dispatchUserEvent(event, null);
     }
 
+    public void logActionBack(boolean completed, int downX, int downY, boolean isButton,
+            boolean gestureSwipeLeft, int containerType) {
+        int actionTouch = isButton ? Action.Touch.TAP : Action.Touch.SWIPE;
+        Action action = newCommandAction(actionTouch);
+        action.command = Action.Command.BACK;
+        action.dir = isButton
+                ? Action.Direction.NONE
+                : gestureSwipeLeft
+                        ? Action.Direction.LEFT
+                        : Action.Direction.RIGHT;
+        Target target = newControlTarget(isButton
+                ? LauncherLogProto.ControlType.BACK_BUTTON
+                : LauncherLogProto.ControlType.BACK_GESTURE);
+        target.spanX = downX;
+        target.spanY = downY;
+        target.cardinality = completed ? 1 : 0;
+        LauncherEvent event = newLauncherEvent(action, target, newContainerTarget(containerType));
+
+        dispatchUserEvent(event, null);
+    }
+
     /**
      * Currently logs following containers: workspace, allapps, widget tray.
      * @param reason