content: package com.android.quickstep;
  
  import android.content.Context;
  import android.graphics.Rect;
  
  import com.android.launcher3.BaseDraggingActivity;
  import com.android.launcher3.DeviceProfile;
  import com.android.systemui.shared.system.RemoteAnimationTargetCompat;
  
  /**
   * Base activity control helper for Go that stubs out most of the functionality that is not needed
   * for Go.
   *
   * @param <T> activity that contains the overview
   */
  public abstract class GoActivityControlHelper<T extends BaseDraggingActivity> implements
          ActivityControlHelper<T> {
  
      @Override
      public void onTransitionCancelled(T activity, boolean activityVisible) {
          // Go transitions to overview are all atomic.
      }
  
      @Override
      public int getSwipeUpDestinationAndLength(DeviceProfile dp, Context context, Rect outRect) {
          // TODO Implement outRect depending on where the task should animate to.
          // Go does not support swipe up gesture.
          return 0;
      }
  
      @Override
      public void onSwipeUpToRecentsComplete(T activity) {
          // Go does not support swipe up gesture.
      }
  
      @Override
      public void onAssistantVisibilityChanged(float visibility) {
          // Go does not support assistant visibility transitions.
      }
  
      @Override
      public HomeAnimationFactory prepareHomeUI(T activity) {
          // Go does not support gestures from app to home.
          return null;
      }
  
      @Override
      public Rect getOverviewWindowBounds(Rect homeBounds, RemoteAnimationTargetCompat target) {
          // Go does not support gestures to overview.
          return null;
      }
  
      @Override
      public boolean shouldMinimizeSplitScreen() {
          // Go does not support split screen.
          return true;
      }
  
      @Override
      public boolean isInLiveTileMode() {
          // Go does not support live tiles.
          return false;
      }
  
      @Override
      public void onLaunchTaskFailed(T activity) {
          // Go does not support gestures from one task to another.
      }
  }
  