diff --git a/quickstep/recents_ui_overrides/src/com/android/launcher3/uioverrides/states/OverviewModalTaskState.java b/quickstep/recents_ui_overrides/src/com/android/launcher3/uioverrides/states/OverviewModalTaskState.java
index 0be2486..d5b0687 100644
--- a/quickstep/recents_ui_overrides/src/com/android/launcher3/uioverrides/states/OverviewModalTaskState.java
+++ b/quickstep/recents_ui_overrides/src/com/android/launcher3/uioverrides/states/OverviewModalTaskState.java
@@ -16,7 +16,6 @@
 package com.android.launcher3.uioverrides.states;
 
 import android.content.Context;
-import android.content.res.Resources;
 import android.graphics.Rect;
 
 import com.android.launcher3.BaseDraggingActivity;
@@ -58,8 +57,6 @@
     }
 
     public static float[] getOverviewScaleAndOffsetForModalState(BaseDraggingActivity activity) {
-        Resources res = activity.getResources();
-
         Rect out = new Rect();
         activity.<RecentsView>getOverviewPanel().getTaskSize(out);
         int taskHeight = out.height();
diff --git a/quickstep/recents_ui_overrides/src/com/android/quickstep/AppToOverviewAnimationProvider.java b/quickstep/recents_ui_overrides/src/com/android/quickstep/AppToOverviewAnimationProvider.java
index 1dd5fb7..f38ff10 100644
--- a/quickstep/recents_ui_overrides/src/com/android/quickstep/AppToOverviewAnimationProvider.java
+++ b/quickstep/recents_ui_overrides/src/com/android/quickstep/AppToOverviewAnimationProvider.java
@@ -31,9 +31,9 @@
 import android.view.View;
 
 import com.android.launcher3.AbstractFloatingView;
-import com.android.launcher3.BaseDraggingActivity;
 import com.android.launcher3.anim.AnimationSuccessListener;
 import com.android.launcher3.statehandlers.DepthController;
+import com.android.launcher3.statemanager.StatefulActivity;
 import com.android.quickstep.util.AppWindowAnimationHelper;
 import com.android.quickstep.util.RemoteAnimationProvider;
 import com.android.quickstep.util.TransformParams;
@@ -47,20 +47,21 @@
  *
  * @param <T> activity that contains the overview
  */
-final class AppToOverviewAnimationProvider<T extends BaseDraggingActivity> extends
+final class AppToOverviewAnimationProvider<T extends StatefulActivity<?>> extends
         RemoteAnimationProvider {
 
     private static final long RECENTS_LAUNCH_DURATION = 250;
     private static final String TAG = "AppToOverviewAnimationProvider";
 
-    private final BaseActivityInterface<T> mActivityInterface;
+    private final BaseActivityInterface<?, T> mActivityInterface;
     // The id of the currently running task that is transitioning to overview.
     private final int mTargetTaskId;
 
     private T mActivity;
     private RecentsView mRecentsView;
 
-    AppToOverviewAnimationProvider(BaseActivityInterface<T> activityInterface, int targetTaskId) {
+    AppToOverviewAnimationProvider(
+            BaseActivityInterface<?, T> activityInterface, int targetTaskId) {
         mActivityInterface = activityInterface;
         mTargetTaskId = targetTaskId;
     }
diff --git a/quickstep/recents_ui_overrides/src/com/android/quickstep/BaseSwipeUpHandler.java b/quickstep/recents_ui_overrides/src/com/android/quickstep/BaseSwipeUpHandler.java
index 76c6060..bbee67c 100644
--- a/quickstep/recents_ui_overrides/src/com/android/quickstep/BaseSwipeUpHandler.java
+++ b/quickstep/recents_ui_overrides/src/com/android/quickstep/BaseSwipeUpHandler.java
@@ -44,12 +44,12 @@
 import androidx.annotation.Nullable;
 import androidx.annotation.UiThread;
 
-import com.android.launcher3.BaseDraggingActivity;
 import com.android.launcher3.DeviceProfile;
 import com.android.launcher3.InvariantDeviceProfile;
 import com.android.launcher3.Utilities;
 import com.android.launcher3.anim.AnimationSuccessListener;
 import com.android.launcher3.anim.AnimatorPlaybackController;
+import com.android.launcher3.statemanager.StatefulActivity;
 import com.android.launcher3.touch.PagedOrientationHandler;
 import com.android.launcher3.util.VibratorWrapper;
 import com.android.launcher3.views.FloatingIconView;
@@ -60,7 +60,6 @@
 import com.android.quickstep.util.TaskViewSimulator;
 import com.android.quickstep.util.TransformParams;
 import com.android.quickstep.util.TransformParams.BuilderProxy;
-import com.android.quickstep.util.WindowSizeStrategy;
 import com.android.quickstep.views.RecentsView;
 import com.android.quickstep.views.TaskView;
 import com.android.systemui.shared.recents.model.ThumbnailData;
@@ -76,7 +75,7 @@
  * Base class for swipe up handler with some utility methods
  */
 @TargetApi(Build.VERSION_CODES.Q)
-public abstract class BaseSwipeUpHandler<T extends BaseDraggingActivity, Q extends RecentsView>
+public abstract class BaseSwipeUpHandler<T extends StatefulActivity<?>, Q extends RecentsView>
         implements RecentsAnimationListener {
 
     private static final String TAG = "BaseSwipeUpHandler";
@@ -97,7 +96,7 @@
     protected final Context mContext;
     protected final RecentsAnimationDeviceState mDeviceState;
     protected final GestureState mGestureState;
-    protected final BaseActivityInterface<T> mActivityInterface;
+    protected final BaseActivityInterface<?, T> mActivityInterface;
     protected final InputConsumerController mInputConsumer;
 
     protected final TaskViewSimulator mTaskViewSimulator;
@@ -132,15 +131,14 @@
     private boolean mRecentsViewScrollLinked = false;
 
     protected BaseSwipeUpHandler(Context context, RecentsAnimationDeviceState deviceState,
-            GestureState gestureState, InputConsumerController inputConsumer,
-            WindowSizeStrategy windowSizeStrategy) {
+            GestureState gestureState, InputConsumerController inputConsumer) {
         mContext = context;
         mDeviceState = deviceState;
         mGestureState = gestureState;
         mActivityInterface = gestureState.getActivityInterface();
         mActivityInitListener = mActivityInterface.createActivityInitListener(this::onActivityInit);
         mInputConsumer = inputConsumer;
-        mTaskViewSimulator = new TaskViewSimulator(context, windowSizeStrategy);
+        mTaskViewSimulator = new TaskViewSimulator(context, gestureState.getActivityInterface());
     }
 
     /**
diff --git a/quickstep/recents_ui_overrides/src/com/android/quickstep/FallbackActivityInterface.java b/quickstep/recents_ui_overrides/src/com/android/quickstep/FallbackActivityInterface.java
index cd546e2..4b3af31 100644
--- a/quickstep/recents_ui_overrides/src/com/android/quickstep/FallbackActivityInterface.java
+++ b/quickstep/recents_ui_overrides/src/com/android/quickstep/FallbackActivityInterface.java
@@ -20,20 +20,22 @@
 import static com.android.quickstep.SysUINavigationMode.Mode.NO_BUTTON;
 import static com.android.quickstep.fallback.RecentsState.BACKGROUND_APP;
 import static com.android.quickstep.fallback.RecentsState.DEFAULT;
-import static com.android.quickstep.util.WindowSizeStrategy.FALLBACK_RECENTS_SIZE_STRATEGY;
 import static com.android.quickstep.views.RecentsView.CONTENT_ALPHA;
 import static com.android.quickstep.views.RecentsView.FULLSCREEN_PROGRESS;
 
 import android.content.Context;
+import android.graphics.PointF;
 import android.graphics.Rect;
 
 import androidx.annotation.Nullable;
 
 import com.android.launcher3.DeviceProfile;
+import com.android.launcher3.R;
 import com.android.launcher3.anim.AnimatorPlaybackController;
 import com.android.launcher3.anim.PendingAnimation;
 import com.android.launcher3.userevent.nano.LauncherLogProto;
 import com.android.quickstep.fallback.FallbackRecentsView;
+import com.android.quickstep.fallback.RecentsState;
 import com.android.quickstep.util.ActivityInitListener;
 import com.android.quickstep.views.RecentsView;
 import com.android.systemui.shared.system.RemoteAnimationTargetCompat;
@@ -46,19 +48,18 @@
  * currently running one and apps should interact with the {@link RecentsActivity} as opposed
  * to the in-launcher one.
  */
-public final class FallbackActivityInterface implements
-        BaseActivityInterface<RecentsActivity> {
+public final class FallbackActivityInterface extends
+        BaseActivityInterface<RecentsState, RecentsActivity> {
 
-    public FallbackActivityInterface() { }
+    public static final FallbackActivityInterface INSTANCE = new FallbackActivityInterface();
 
-    @Override
-    public void onTransitionCancelled(boolean activityVisible) {
-        // TODO:
+    private FallbackActivityInterface() {
+        super(false);
     }
 
     @Override
     public int getSwipeUpDestinationAndLength(DeviceProfile dp, Context context, Rect outRect) {
-        FALLBACK_RECENTS_SIZE_STRATEGY.calculateTaskSize(context, dp, outRect);
+        calculateTaskSize(context, dp, outRect);
         if (dp.isVerticalBarLayout()
                 && SysUINavigationMode.INSTANCE.get(context).getMode() != NO_BUTTON) {
             Rect targetInsets = dp.getInsets();
@@ -70,17 +71,6 @@
     }
 
     @Override
-    public void onSwipeUpToRecentsComplete() {
-        RecentsActivity activity = getCreatedActivity();
-        if (activity == null) {
-            return;
-        }
-        RecentsView recentsView = activity.getOverviewPanel();
-        recentsView.getClearAllButton().setVisibilityAlpha(1);
-        recentsView.setDisallowScrollToClearAll(false);
-    }
-
-    @Override
     public void onAssistantVisibilityChanged(float visibility) {
         // This class becomes active when the screen is locked.
         // Rather than having it handle assistant visibility changes, the assistant visibility is
@@ -198,11 +188,14 @@
     }
 
     @Override
-    public void onLaunchTaskSuccess() {
-        RecentsActivity activity = getCreatedActivity();
-        if (activity == null) {
-            return;
-        }
-        activity.onTaskLaunched();
+    public void getMultiWindowSize(Context context, DeviceProfile dp, PointF out) {
+        out.set(dp.widthPx, dp.heightPx);
+    }
+
+    @Override
+    protected float getExtraSpace(Context context, DeviceProfile dp) {
+        return showOverviewActions(context)
+                ? context.getResources().getDimensionPixelSize(R.dimen.overview_actions_height)
+                : 0;
     }
 }
diff --git a/quickstep/recents_ui_overrides/src/com/android/quickstep/FallbackSwipeHandler.java b/quickstep/recents_ui_overrides/src/com/android/quickstep/FallbackSwipeHandler.java
index 77e50ca..db41bd6 100644
--- a/quickstep/recents_ui_overrides/src/com/android/quickstep/FallbackSwipeHandler.java
+++ b/quickstep/recents_ui_overrides/src/com/android/quickstep/FallbackSwipeHandler.java
@@ -24,7 +24,6 @@
 import static com.android.quickstep.MultiStateCallback.DEBUG_STATES;
 import static com.android.quickstep.RecentsActivity.EXTRA_TASK_ID;
 import static com.android.quickstep.RecentsActivity.EXTRA_THUMBNAIL;
-import static com.android.quickstep.util.WindowSizeStrategy.FALLBACK_RECENTS_SIZE_STRATEGY;
 import static com.android.quickstep.views.RecentsView.UPDATE_SYSUI_FLAGS_THRESHOLD;
 
 import android.animation.Animator;
@@ -114,7 +113,7 @@
     public FallbackSwipeHandler(Context context, RecentsAnimationDeviceState deviceState,
             GestureState gestureState, InputConsumerController inputConsumer,
             boolean isLikelyToStartNewTask, boolean continuingLastGesture) {
-        super(context, deviceState, gestureState, inputConsumer, FALLBACK_RECENTS_SIZE_STRATEGY);
+        super(context, deviceState, gestureState, inputConsumer);
 
         mInQuickSwitchMode = isLikelyToStartNewTask || continuingLastGesture;
         mContinuingLastGesture = continuingLastGesture;
diff --git a/quickstep/recents_ui_overrides/src/com/android/quickstep/LauncherActivityInterface.java b/quickstep/recents_ui_overrides/src/com/android/quickstep/LauncherActivityInterface.java
index 9ff5d942..d466296 100644
--- a/quickstep/recents_ui_overrides/src/com/android/quickstep/LauncherActivityInterface.java
+++ b/quickstep/recents_ui_overrides/src/com/android/quickstep/LauncherActivityInterface.java
@@ -21,16 +21,21 @@
 import static com.android.launcher3.anim.Interpolators.ACCEL_2;
 import static com.android.launcher3.anim.Interpolators.INSTANT;
 import static com.android.launcher3.anim.Interpolators.LINEAR;
+import static com.android.launcher3.config.FeatureFlags.ENABLE_OVERVIEW_ACTIONS;
 import static com.android.launcher3.uioverrides.states.QuickstepAtomicAnimationFactory.INDEX_RECENTS_FADE_ANIM;
 import static com.android.launcher3.uioverrides.states.QuickstepAtomicAnimationFactory.INDEX_RECENTS_TRANSLATE_X_ANIM;
 import static com.android.launcher3.uioverrides.states.QuickstepAtomicAnimationFactory.INDEX_SHELF_ANIM;
 import static com.android.quickstep.LauncherSwipeHandler.RECENTS_ATTACH_DURATION;
-import static com.android.quickstep.util.WindowSizeStrategy.LAUNCHER_ACTIVITY_SIZE_STRATEGY;
+import static com.android.quickstep.SysUINavigationMode.getMode;
+import static com.android.quickstep.SysUINavigationMode.removeShelfFromOverview;
+import static com.android.quickstep.util.LayoutUtils.getDefaultSwipeHeight;
 import static com.android.quickstep.views.RecentsView.ADJACENT_PAGE_OFFSET;
 import static com.android.quickstep.views.RecentsView.FULLSCREEN_PROGRESS;
 
 import android.animation.Animator;
 import android.content.Context;
+import android.content.res.Resources;
+import android.graphics.PointF;
 import android.graphics.Rect;
 import android.util.Log;
 import android.view.MotionEvent;
@@ -44,6 +49,7 @@
 import com.android.launcher3.Launcher;
 import com.android.launcher3.LauncherInitListener;
 import com.android.launcher3.LauncherState;
+import com.android.launcher3.R;
 import com.android.launcher3.allapps.DiscoveryBounce;
 import com.android.launcher3.anim.AnimatorPlaybackController;
 import com.android.launcher3.anim.PendingAnimation;
@@ -60,7 +66,6 @@
 import com.android.quickstep.views.LauncherRecentsView;
 import com.android.quickstep.views.RecentsView;
 import com.android.systemui.plugins.shared.LauncherOverlayManager;
-import com.android.systemui.shared.recents.model.ThumbnailData;
 import com.android.systemui.shared.system.RemoteAnimationTargetCompat;
 
 import java.util.function.Consumer;
@@ -69,11 +74,18 @@
 /**
  * {@link BaseActivityInterface} for the in-launcher recents.
  */
-public final class LauncherActivityInterface implements BaseActivityInterface<Launcher> {
+public final class LauncherActivityInterface extends
+        BaseActivityInterface<LauncherState, Launcher> {
+
+    public static final LauncherActivityInterface INSTANCE = new LauncherActivityInterface();
+
+    private LauncherActivityInterface() {
+        super(true);
+    }
 
     @Override
     public int getSwipeUpDestinationAndLength(DeviceProfile dp, Context context, Rect outRect) {
-        LAUNCHER_ACTIVITY_SIZE_STRATEGY.calculateTaskSize(context, dp, outRect);
+        calculateTaskSize(context, dp, outRect);
         if (dp.isVerticalBarLayout() && SysUINavigationMode.getMode(context) != Mode.NO_BUTTON) {
             Rect targetInsets = dp.getInsets();
             int hotseatInset = dp.isSeascape() ? targetInsets.left : targetInsets.right;
@@ -84,24 +96,12 @@
     }
 
     @Override
-    public void onTransitionCancelled(boolean activityVisible) {
-        Launcher launcher = getCreatedActivity();
-        if (launcher == null) {
-            return;
-        }
-        LauncherState startState = launcher.getStateManager().getRestState();
-        launcher.getStateManager().goToState(startState, activityVisible);
-    }
-
-    @Override
     public void onSwipeUpToRecentsComplete() {
-        // Re apply state in case we did something funky during the transition.
+        super.onSwipeUpToRecentsComplete();
         Launcher launcher = getCreatedActivity();
-        if (launcher == null) {
-            return;
+        if (launcher != null) {
+            DiscoveryBounce.showForOverviewIfNeeded(launcher);
         }
-        launcher.getStateManager().reapplyState();
-        DiscoveryBounce.showForOverviewIfNeeded(launcher);
     }
 
     @Override
@@ -113,15 +113,7 @@
         // Ensure recents is at the correct position for NORMAL state. For example, when we detach
         // recents, we assume the first task is invisible, making translation off by one task.
         launcher.getStateManager().reapplyState();
-        setLauncherHideBackArrow(false);
-    }
-
-    private void setLauncherHideBackArrow(boolean hideBackArrow) {
-        Launcher launcher = getCreatedActivity();
-        if (launcher == null) {
-            return;
-        }
-        launcher.getRootView().setForceHideBackArrow(hideBackArrow);
+        launcher.getRootView().setForceHideBackArrow(false);
     }
 
     @Override
@@ -337,15 +329,6 @@
     }
 
     @Override
-    public void onLaunchTaskSuccess() {
-        Launcher launcher = getCreatedActivity();
-        if (launcher == null) {
-            return;
-        }
-        launcher.getStateManager().moveToRestState();
-    }
-
-    @Override
     public void closeOverlay() {
         Launcher launcher = getCreatedActivity();
         if (launcher == null) {
@@ -360,23 +343,6 @@
     }
 
     @Override
-    public void switchRunningTaskViewToScreenshot(ThumbnailData thumbnailData,
-            Runnable onFinishRunnable) {
-        Launcher launcher = getCreatedActivity();
-        if (launcher == null) {
-            return;
-        }
-        RecentsView recentsView = launcher.getOverviewPanel();
-        if (recentsView == null) {
-            if (onFinishRunnable != null) {
-                onFinishRunnable.run();
-            }
-            return;
-        }
-        recentsView.switchToScreenshot(thumbnailData, onFinishRunnable);
-    }
-
-    @Override
     public void setOnDeferredActivityLaunchCallback(Runnable r) {
         Launcher launcher = getCreatedActivity();
         if (launcher == null) {
@@ -404,4 +370,50 @@
         }
         return launcher.getDepthController();
     }
+
+    @Override
+    public void getMultiWindowSize(Context context, DeviceProfile dp, PointF out) {
+        DeviceProfile fullDp = dp.getFullScreenProfile();
+        // Use availableWidthPx and availableHeightPx instead of widthPx and heightPx to
+        // account for system insets
+        out.set(fullDp.availableWidthPx, fullDp.availableHeightPx);
+        float halfDividerSize = context.getResources()
+                .getDimension(R.dimen.multi_window_task_divider_size) / 2;
+
+        if (fullDp.isLandscape) {
+            out.x = out.x / 2 - halfDividerSize;
+        } else {
+            out.y = out.y / 2 - halfDividerSize;
+        }
+    }
+
+    @Override
+    protected float getExtraSpace(Context context, DeviceProfile dp) {
+        if (dp.isVerticalBarLayout()) {
+            return  0;
+        } else {
+            Resources res = context.getResources();
+            if (showOverviewActions(context)) {
+                //TODO: this needs to account for the swipe gesture height and accessibility
+                // UI when shown.
+                float actionsBottomMargin = 0;
+                if (getMode(context) == Mode.THREE_BUTTONS) {
+                    actionsBottomMargin = res.getDimensionPixelSize(
+                            R.dimen.overview_actions_bottom_margin_three_button);
+                } else {
+                    actionsBottomMargin = res.getDimensionPixelSize(
+                            R.dimen.overview_actions_bottom_margin_gesture);
+                }
+                float actionsHeight = actionsBottomMargin
+                        + res.getDimensionPixelSize(R.dimen.overview_actions_height);
+                return actionsHeight;
+            } else {
+                return getDefaultSwipeHeight(context, dp) + dp.workspacePageIndicatorHeight
+                        + res.getDimensionPixelSize(
+                        R.dimen.dynamic_grid_hotseat_extra_vertical_size)
+                        + res.getDimensionPixelSize(
+                        R.dimen.dynamic_grid_hotseat_bottom_padding);
+            }
+        }
+    }
 }
\ No newline at end of file
diff --git a/quickstep/recents_ui_overrides/src/com/android/quickstep/LauncherSwipeHandler.java b/quickstep/recents_ui_overrides/src/com/android/quickstep/LauncherSwipeHandler.java
index 0bf81ef..1830ccb 100644
--- a/quickstep/recents_ui_overrides/src/com/android/quickstep/LauncherSwipeHandler.java
+++ b/quickstep/recents_ui_overrides/src/com/android/quickstep/LauncherSwipeHandler.java
@@ -35,7 +35,6 @@
 import static com.android.quickstep.SysUINavigationMode.Mode.TWO_BUTTONS;
 import static com.android.quickstep.util.ShelfPeekAnim.ShelfAnimState.HIDE;
 import static com.android.quickstep.util.ShelfPeekAnim.ShelfAnimState.PEEK;
-import static com.android.quickstep.util.WindowSizeStrategy.LAUNCHER_ACTIVITY_SIZE_STRATEGY;
 import static com.android.quickstep.views.RecentsView.UPDATE_SYSUI_FLAGS_THRESHOLD;
 
 import android.animation.Animator;
@@ -60,7 +59,6 @@
 import androidx.annotation.UiThread;
 
 import com.android.launcher3.AbstractFloatingView;
-import com.android.launcher3.BaseDraggingActivity;
 import com.android.launcher3.DeviceProfile;
 import com.android.launcher3.Launcher;
 import com.android.launcher3.R;
@@ -69,6 +67,7 @@
 import com.android.launcher3.anim.AnimatorPlaybackController;
 import com.android.launcher3.anim.Interpolators;
 import com.android.launcher3.logging.UserEventDispatcher;
+import com.android.launcher3.statemanager.StatefulActivity;
 import com.android.launcher3.userevent.nano.LauncherLogProto.Action.Direction;
 import com.android.launcher3.userevent.nano.LauncherLogProto.Action.Touch;
 import com.android.launcher3.userevent.nano.LauncherLogProto.ContainerType;
@@ -198,7 +197,7 @@
             TaskAnimationManager taskAnimationManager, GestureState gestureState,
             long touchTimeMs, boolean continuingLastGesture,
             InputConsumerController inputConsumer) {
-        super(context, deviceState, gestureState, inputConsumer, LAUNCHER_ACTIVITY_SIZE_STRATEGY);
+        super(context, deviceState, gestureState, inputConsumer);
         mTaskAnimationManager = taskAnimationManager;
         mTouchTimeMs = touchTimeMs;
         mContinuingLastGesture = continuingLastGesture;
@@ -684,7 +683,7 @@
             setTargetAlphaProvider(LauncherSwipeHandler::getHiddenTargetAlpha);
         }
 
-        BaseDraggingActivity activity = mActivityInterface.getCreatedActivity();
+        StatefulActivity activity = mActivityInterface.getCreatedActivity();
         return activity == null ? InputConsumer.NO_OP
                 : new OverviewInputConsumer(mGestureState, activity, null, true);
     }
diff --git a/quickstep/recents_ui_overrides/src/com/android/quickstep/OverviewCommandHelper.java b/quickstep/recents_ui_overrides/src/com/android/quickstep/OverviewCommandHelper.java
index c6b719a..8846727 100644
--- a/quickstep/recents_ui_overrides/src/com/android/quickstep/OverviewCommandHelper.java
+++ b/quickstep/recents_ui_overrides/src/com/android/quickstep/OverviewCommandHelper.java
@@ -28,9 +28,10 @@
 import android.view.ViewConfiguration;
 
 import androidx.annotation.BinderThread;
-import com.android.launcher3.BaseDraggingActivity;
+
 import com.android.launcher3.appprediction.PredictionUiStateManager;
 import com.android.launcher3.logging.UserEventDispatcher;
+import com.android.launcher3.statemanager.StatefulActivity;
 import com.android.launcher3.userevent.nano.LauncherLogProto;
 import com.android.quickstep.util.ActivityInitListener;
 import com.android.quickstep.util.RemoteAnimationProvider;
@@ -111,7 +112,7 @@
         protected void onTransitionComplete() {
             // TODO(b/138729100) This doesn't execute first time launcher is run
             if (mTriggeredFromAltTab) {
-                RecentsView rv = (RecentsView) mActivityInterface.getVisibleRecentsView();
+                RecentsView rv =  mActivityInterface.getVisibleRecentsView();
                 if (rv == null) {
                     return;
                 }
@@ -136,7 +137,7 @@
 
         @Override
         protected boolean handleCommand(long elapsedTime) {
-            RecentsView recents = (RecentsView) mActivityInterface.getVisibleRecentsView();
+            RecentsView recents = mActivityInterface.getVisibleRecentsView();
             if (recents == null) {
                 return false;
             }
@@ -150,9 +151,9 @@
         }
     }
 
-    private class RecentsActivityCommand<T extends BaseDraggingActivity> implements Runnable {
+    private class RecentsActivityCommand<T extends StatefulActivity<?>> implements Runnable {
 
-        protected final BaseActivityInterface<T> mActivityInterface;
+        protected final BaseActivityInterface<?, T> mActivityInterface;
         private final long mCreateTime;
         private final AppToOverviewAnimationProvider<T> mAnimationProvider;
 
diff --git a/quickstep/recents_ui_overrides/src/com/android/quickstep/RecentsActivity.java b/quickstep/recents_ui_overrides/src/com/android/quickstep/RecentsActivity.java
index 03d522e..a4670fd 100644
--- a/quickstep/recents_ui_overrides/src/com/android/quickstep/RecentsActivity.java
+++ b/quickstep/recents_ui_overrides/src/com/android/quickstep/RecentsActivity.java
@@ -261,10 +261,6 @@
         AccessibilityManagerCompat.sendStateEventToTest(getBaseContext(), OVERVIEW_STATE_ORDINAL);
     }
 
-    public void onTaskLaunched() {
-        mFallbackRecentsView.resetTaskVisuals();
-    }
-
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
diff --git a/quickstep/recents_ui_overrides/src/com/android/quickstep/TouchInteractionService.java b/quickstep/recents_ui_overrides/src/com/android/quickstep/TouchInteractionService.java
index 258d60c..acc7794 100644
--- a/quickstep/recents_ui_overrides/src/com/android/quickstep/TouchInteractionService.java
+++ b/quickstep/recents_ui_overrides/src/com/android/quickstep/TouchInteractionService.java
@@ -63,6 +63,7 @@
 import com.android.launcher3.logging.UserEventDispatcher;
 import com.android.launcher3.model.AppLaunchTracker;
 import com.android.launcher3.provider.RestoreDbTask;
+import com.android.launcher3.statemanager.StatefulActivity;
 import com.android.launcher3.testing.TestLogging;
 import com.android.launcher3.testing.TestProtocol;
 import com.android.launcher3.tracing.nano.LauncherTraceProto;
@@ -705,7 +706,7 @@
     public InputConsumer createOverviewInputConsumer(GestureState previousGestureState,
             GestureState gestureState, MotionEvent event,
             boolean forceOverviewInputConsumer) {
-        BaseDraggingActivity activity = gestureState.getActivityInterface().getCreatedActivity();
+        StatefulActivity activity = gestureState.getActivityInterface().getCreatedActivity();
         if (activity == null) {
             return mResetGestureInputConsumer;
         }
@@ -754,7 +755,7 @@
             return;
         }
 
-        final BaseActivityInterface<BaseDraggingActivity> activityInterface =
+        final BaseActivityInterface activityInterface =
                 mOverviewComponentObserver.getActivityInterface();
         final Intent overviewIntent = new Intent(
                 mOverviewComponentObserver.getOverviewIntentIgnoreSysUiState());
diff --git a/quickstep/recents_ui_overrides/src/com/android/quickstep/fallback/FallbackRecentsView.java b/quickstep/recents_ui_overrides/src/com/android/quickstep/fallback/FallbackRecentsView.java
index 1ab317b..f958e6d 100644
--- a/quickstep/recents_ui_overrides/src/com/android/quickstep/fallback/FallbackRecentsView.java
+++ b/quickstep/recents_ui_overrides/src/com/android/quickstep/fallback/FallbackRecentsView.java
@@ -17,7 +17,6 @@
 
 import static com.android.quickstep.fallback.RecentsState.DEFAULT;
 import static com.android.quickstep.fallback.RecentsState.MODAL_TASK;
-import static com.android.quickstep.util.WindowSizeStrategy.FALLBACK_RECENTS_SIZE_STRATEGY;
 
 import android.annotation.TargetApi;
 import android.app.ActivityManager.RunningTaskInfo;
@@ -26,6 +25,7 @@
 import android.util.AttributeSet;
 
 import com.android.launcher3.statemanager.StateManager.StateListener;
+import com.android.quickstep.FallbackActivityInterface;
 import com.android.quickstep.RecentsActivity;
 import com.android.quickstep.views.OverviewActionsView;
 import com.android.quickstep.views.RecentsView;
@@ -45,7 +45,7 @@
     }
 
     public FallbackRecentsView(Context context, AttributeSet attrs, int defStyleAttr) {
-        super(context, attrs, defStyleAttr, FALLBACK_RECENTS_SIZE_STRATEGY);
+        super(context, attrs, defStyleAttr, FallbackActivityInterface.INSTANCE);
         mActivity.getStateManager().addStateListener(this);
     }
 
diff --git a/quickstep/recents_ui_overrides/src/com/android/quickstep/inputconsumers/OverviewInputConsumer.java b/quickstep/recents_ui_overrides/src/com/android/quickstep/inputconsumers/OverviewInputConsumer.java
index c82d4b5..11fee2f 100644
--- a/quickstep/recents_ui_overrides/src/com/android/quickstep/inputconsumers/OverviewInputConsumer.java
+++ b/quickstep/recents_ui_overrides/src/com/android/quickstep/inputconsumers/OverviewInputConsumer.java
@@ -24,8 +24,8 @@
 
 import androidx.annotation.Nullable;
 
-import com.android.launcher3.BaseDraggingActivity;
 import com.android.launcher3.Utilities;
+import com.android.launcher3.statemanager.StatefulActivity;
 import com.android.launcher3.testing.TestLogging;
 import com.android.launcher3.testing.TestProtocol;
 import com.android.launcher3.views.BaseDragLayer;
@@ -41,11 +41,11 @@
 /**
  * Input consumer for handling touch on the recents/Launcher activity.
  */
-public class OverviewInputConsumer<T extends BaseDraggingActivity>
+public class OverviewInputConsumer<T extends StatefulActivity<?>>
         implements InputConsumer {
 
     private final T mActivity;
-    private final BaseActivityInterface<T> mActivityInterface;
+    private final BaseActivityInterface<?, T> mActivityInterface;
     private final BaseDragLayer mTarget;
     private final InputMonitorCompat mInputMonitor;
 
diff --git a/quickstep/recents_ui_overrides/src/com/android/quickstep/util/TaskViewSimulator.java b/quickstep/recents_ui_overrides/src/com/android/quickstep/util/TaskViewSimulator.java
index b8f0f4d..a3db940 100644
--- a/quickstep/recents_ui_overrides/src/com/android/quickstep/util/TaskViewSimulator.java
+++ b/quickstep/recents_ui_overrides/src/com/android/quickstep/util/TaskViewSimulator.java
@@ -15,8 +15,6 @@
  */
 package com.android.quickstep.util;
 
-import static android.view.Surface.ROTATION_0;
-
 import static com.android.launcher3.states.RotationHelper.deltaRotation;
 import static com.android.launcher3.touch.PagedOrientationHandler.MATRIX_POST_TRANSLATE;
 import static com.android.quickstep.util.RecentsOrientedState.postDisplayRotation;
@@ -33,6 +31,7 @@
 import com.android.launcher3.Utilities;
 import com.android.launcher3.touch.PagedOrientationHandler;
 import com.android.quickstep.AnimatedFloat;
+import com.android.quickstep.BaseActivityInterface;
 import com.android.quickstep.views.RecentsView.ScrollState;
 import com.android.quickstep.views.TaskThumbnailView.PreviewPositionHelper;
 import com.android.quickstep.views.TaskView;
@@ -52,7 +51,7 @@
 
     private final RecentsOrientedState mOrientationState;
     private final Context mContext;
-    private final WindowSizeStrategy mSizeStrategy;
+    private final BaseActivityInterface mSizeStrategy;
 
     private final Rect mTaskRect = new Rect();
     private final PointF mPivot = new PointF();
@@ -81,7 +80,7 @@
     private boolean mLayoutValid = false;
     private boolean mScrollValid = false;
 
-    public TaskViewSimulator(Context context, WindowSizeStrategy sizeStrategy) {
+    public TaskViewSimulator(Context context, BaseActivityInterface sizeStrategy) {
         mContext = context;
         mSizeStrategy = sizeStrategy;
 
diff --git a/quickstep/recents_ui_overrides/src/com/android/quickstep/views/LauncherRecentsView.java b/quickstep/recents_ui_overrides/src/com/android/quickstep/views/LauncherRecentsView.java
index 250c78b..3d89403 100644
--- a/quickstep/recents_ui_overrides/src/com/android/quickstep/views/LauncherRecentsView.java
+++ b/quickstep/recents_ui_overrides/src/com/android/quickstep/views/LauncherRecentsView.java
@@ -25,7 +25,6 @@
 import static com.android.launcher3.QuickstepAppTransitionManagerImpl.ALL_APPS_PROGRESS_OFF_SCREEN;
 import static com.android.launcher3.allapps.AllAppsTransitionController.ALL_APPS_PROGRESS;
 import static com.android.launcher3.config.FeatureFlags.ENABLE_QUICKSTEP_LIVE_TILE;
-import static com.android.quickstep.util.WindowSizeStrategy.LAUNCHER_ACTIVITY_SIZE_STRATEGY;
 
 import android.animation.AnimatorSet;
 import android.animation.ObjectAnimator;
@@ -47,6 +46,7 @@
 import com.android.launcher3.uioverrides.plugins.PluginManagerWrapper;
 import com.android.launcher3.util.TraceHelper;
 import com.android.launcher3.views.ScrimView;
+import com.android.quickstep.LauncherActivityInterface;
 import com.android.quickstep.SysUINavigationMode;
 import com.android.quickstep.util.TransformParams;
 import com.android.systemui.plugins.PluginListener;
@@ -89,7 +89,7 @@
     }
 
     public LauncherRecentsView(Context context, AttributeSet attrs, int defStyleAttr) {
-        super(context, attrs, defStyleAttr, LAUNCHER_ACTIVITY_SIZE_STRATEGY);
+        super(context, attrs, defStyleAttr, LauncherActivityInterface.INSTANCE);
         mActivity.getStateManager().addStateListener(this);
     }
 
diff --git a/quickstep/recents_ui_overrides/src/com/android/quickstep/views/RecentsView.java b/quickstep/recents_ui_overrides/src/com/android/quickstep/views/RecentsView.java
index 54ed40f..253e83c 100644
--- a/quickstep/recents_ui_overrides/src/com/android/quickstep/views/RecentsView.java
+++ b/quickstep/recents_ui_overrides/src/com/android/quickstep/views/RecentsView.java
@@ -115,6 +115,7 @@
 import com.android.launcher3.util.OverScroller;
 import com.android.launcher3.util.Themes;
 import com.android.launcher3.util.ViewPool;
+import com.android.quickstep.BaseActivityInterface;
 import com.android.quickstep.RecentsAnimationController;
 import com.android.quickstep.RecentsAnimationTargets;
 import com.android.quickstep.RecentsModel;
@@ -128,7 +129,6 @@
 import com.android.quickstep.util.RecentsOrientedState;
 import com.android.quickstep.util.SplitScreenBounds;
 import com.android.quickstep.util.TransformParams;
-import com.android.quickstep.util.WindowSizeStrategy;
 import com.android.systemui.plugins.ResourceProvider;
 import com.android.systemui.shared.recents.IPinnedStackAnimationListener;
 import com.android.systemui.shared.recents.model.Task;
@@ -209,7 +209,7 @@
             };
 
     protected final RecentsOrientedState mOrientationState;
-    protected final WindowSizeStrategy mSizeStrategy;
+    protected final BaseActivityInterface mSizeStrategy;
     protected RecentsAnimationController mRecentsAnimationController;
     protected RecentsAnimationTargets mRecentsAnimationTargets;
     protected AppWindowAnimationHelper mAppWindowAnimationHelper;
@@ -381,7 +381,7 @@
     };
 
     public RecentsView(Context context, AttributeSet attrs, int defStyleAttr,
-            WindowSizeStrategy sizeStrategy) {
+            BaseActivityInterface sizeStrategy) {
         super(context, attrs, defStyleAttr);
         setPageSpacing(getResources().getDimensionPixelSize(R.dimen.recents_page_spacing));
         setEnableFreeScroll(true);
diff --git a/quickstep/src/com/android/quickstep/BaseActivityInterface.java b/quickstep/src/com/android/quickstep/BaseActivityInterface.java
index 43328b6..2699a91 100644
--- a/quickstep/src/com/android/quickstep/BaseActivityInterface.java
+++ b/quickstep/src/com/android/quickstep/BaseActivityInterface.java
@@ -15,23 +15,34 @@
  */
 package com.android.quickstep;
 
+import static com.android.launcher3.config.FeatureFlags.ENABLE_OVERVIEW_ACTIONS;
+import static com.android.quickstep.SysUINavigationMode.getMode;
+import static com.android.quickstep.SysUINavigationMode.removeShelfFromOverview;
+
 import android.annotation.TargetApi;
 import android.content.Context;
+import android.content.res.Resources;
+import android.graphics.PointF;
 import android.graphics.Rect;
 import android.os.Build;
 import android.view.MotionEvent;
-import android.view.View;
 import android.view.animation.Interpolator;
 
 import androidx.annotation.Nullable;
 import androidx.annotation.UiThread;
 
-import com.android.launcher3.BaseDraggingActivity;
 import com.android.launcher3.DeviceProfile;
+import com.android.launcher3.R;
 import com.android.launcher3.anim.AnimatorPlaybackController;
 import com.android.launcher3.statehandlers.DepthController;
+import com.android.launcher3.statemanager.BaseState;
+import com.android.launcher3.statemanager.StatefulActivity;
+import com.android.launcher3.util.WindowBounds;
+import com.android.quickstep.SysUINavigationMode.Mode;
 import com.android.quickstep.util.ActivityInitListener;
 import com.android.quickstep.util.ShelfPeekAnim;
+import com.android.quickstep.util.SplitScreenBounds;
+import com.android.quickstep.views.RecentsView;
 import com.android.systemui.shared.recents.model.ThumbnailData;
 import com.android.systemui.shared.system.RemoteAnimationTargetCompat;
 
@@ -42,84 +53,232 @@
  * Utility class which abstracts out the logical differences between Launcher and RecentsActivity.
  */
 @TargetApi(Build.VERSION_CODES.P)
-public interface BaseActivityInterface<T extends BaseDraggingActivity> {
+public abstract class BaseActivityInterface<STATE_TYPE extends BaseState<STATE_TYPE>,
+        ACTIVITY_TYPE extends StatefulActivity<STATE_TYPE>> {
 
-    void onTransitionCancelled(boolean activityVisible);
+    private final PointF mTempPoint = new PointF();
+    public final boolean rotationSupportedByActivity;
 
-    int getSwipeUpDestinationAndLength(DeviceProfile dp, Context context, Rect outRect);
+    protected BaseActivityInterface(boolean rotationSupportedByActivity) {
+        this.rotationSupportedByActivity = rotationSupportedByActivity;
+    }
 
-    void onSwipeUpToRecentsComplete();
+    public void onTransitionCancelled(boolean activityVisible) {
+        ACTIVITY_TYPE activity = getCreatedActivity();
+        if (activity == null) {
+            return;
+        }
+        STATE_TYPE startState = activity.getStateManager().getRestState();
+        activity.getStateManager().goToState(startState, activityVisible);
+    }
 
-    default void onSwipeUpToHomeComplete() { }
-    void onAssistantVisibilityChanged(float visibility);
+    public abstract int getSwipeUpDestinationAndLength(
+            DeviceProfile dp, Context context, Rect outRect);
 
-    AnimationFactory prepareRecentsUI(
+    public void onSwipeUpToRecentsComplete() {
+        // Re apply state in case we did something funky during the transition.
+        ACTIVITY_TYPE activity = getCreatedActivity();
+        if (activity == null) {
+            return;
+        }
+        activity.getStateManager().reapplyState();
+    }
+
+    public void onSwipeUpToHomeComplete() { }
+
+    public abstract void onAssistantVisibilityChanged(float visibility);
+
+    public abstract AnimationFactory prepareRecentsUI(
             boolean activityVisible, Consumer<AnimatorPlaybackController> callback);
 
-    ActivityInitListener createActivityInitListener(Predicate<Boolean> onInitListener);
+    public abstract ActivityInitListener createActivityInitListener(
+            Predicate<Boolean> onInitListener);
 
     /**
      * Sets a callback to be run when an activity launch happens while launcher is not yet resumed.
      */
-    default void setOnDeferredActivityLaunchCallback(Runnable r) {}
+    public void setOnDeferredActivityLaunchCallback(Runnable r) {}
 
     @Nullable
-    T getCreatedActivity();
+    public abstract ACTIVITY_TYPE getCreatedActivity();
 
     @Nullable
-    default DepthController getDepthController() {
+    public DepthController getDepthController() {
         return null;
     }
 
-    default boolean isResumed() {
-        BaseDraggingActivity activity = getCreatedActivity();
+    public final boolean isResumed() {
+        ACTIVITY_TYPE activity = getCreatedActivity();
         return activity != null && activity.hasBeenResumed();
     }
 
-    default boolean isStarted() {
-        BaseDraggingActivity activity = getCreatedActivity();
+    public final boolean isStarted() {
+        ACTIVITY_TYPE activity = getCreatedActivity();
         return activity != null && activity.isStarted();
     }
 
     @UiThread
     @Nullable
-    <T extends View> T getVisibleRecentsView();
+    public abstract <T extends RecentsView> T getVisibleRecentsView();
 
     @UiThread
-    boolean switchToRecentsIfVisible(Runnable onCompleteCallback);
+    public abstract boolean switchToRecentsIfVisible(Runnable onCompleteCallback);
 
-    Rect getOverviewWindowBounds(Rect homeBounds, RemoteAnimationTargetCompat target);
+    public abstract Rect getOverviewWindowBounds(
+            Rect homeBounds, RemoteAnimationTargetCompat target);
 
-    boolean allowMinimizeSplitScreen();
+    public abstract boolean allowMinimizeSplitScreen();
 
-    default boolean deferStartingActivity(RecentsAnimationDeviceState deviceState, MotionEvent ev) {
+    public boolean deferStartingActivity(RecentsAnimationDeviceState deviceState, MotionEvent ev) {
         return true;
     }
 
     /**
      * Updates the prediction state to the overview state.
      */
-    default void updateOverviewPredictionState() {
-        // By default overview predictions are not supported
+    public void updateOverviewPredictionState() {
+        // By public overview predictions are not supported
     }
 
     /**
      * Used for containerType in {@link com.android.launcher3.logging.UserEventDispatcher}
      */
-    int getContainerType();
+    public abstract int getContainerType();
 
-    boolean isInLiveTileMode();
+    public abstract boolean isInLiveTileMode();
 
-    void onLaunchTaskFailed();
+    public abstract void onLaunchTaskFailed();
 
-    void onLaunchTaskSuccess();
+    public void onLaunchTaskSuccess() {
+        ACTIVITY_TYPE activity = getCreatedActivity();
+        if (activity == null) {
+            return;
+        }
+        activity.getStateManager().moveToRestState();
+    }
 
-    default void closeOverlay() { }
+    public void closeOverlay() { }
 
-    default void switchRunningTaskViewToScreenshot(ThumbnailData thumbnailData,
-            Runnable runnable) {}
+    public void switchRunningTaskViewToScreenshot(ThumbnailData thumbnailData, Runnable runnable) {
+        ACTIVITY_TYPE activity = getCreatedActivity();
+        if (activity == null) {
+            return;
+        }
+        RecentsView recentsView = activity.getOverviewPanel();
+        if (recentsView == null) {
+            if (runnable != null) {
+                runnable.run();
+            }
+            return;
+        }
+        recentsView.switchToScreenshot(thumbnailData, runnable);
+    }
 
-    interface AnimationFactory {
+    /**
+     * Sets the expected window size in multi-window mode
+     */
+    public abstract void getMultiWindowSize(Context context, DeviceProfile dp, PointF out);
+
+    /**
+     * Calculates the taskView size for the provided device configuration
+     */
+    public final void calculateTaskSize(Context context, DeviceProfile dp, Rect outRect) {
+        calculateTaskSize(context, dp, getExtraSpace(context, dp), outRect);
+    }
+
+    protected abstract float getExtraSpace(Context context, DeviceProfile dp);
+
+    private void calculateTaskSize(
+            Context context, DeviceProfile dp, float extraVerticalSpace, Rect outRect) {
+        Resources res = context.getResources();
+        final boolean showLargeTaskSize = showOverviewActions(context);
+
+        final int paddingResId;
+        if (dp.isMultiWindowMode) {
+            paddingResId = R.dimen.multi_window_task_card_horz_space;
+        } else if (dp.isVerticalBarLayout()) {
+            paddingResId = R.dimen.landscape_task_card_horz_space;
+        } else if (showLargeTaskSize) {
+            paddingResId = R.dimen.portrait_task_card_horz_space_big_overview;
+        } else {
+            paddingResId = R.dimen.portrait_task_card_horz_space;
+        }
+        float paddingHorz = res.getDimension(paddingResId);
+        float paddingVert = showLargeTaskSize
+                ? 0 : res.getDimension(R.dimen.task_card_vert_space);
+
+        calculateTaskSizeInternal(context, dp, extraVerticalSpace, paddingHorz, paddingVert,
+                res.getDimension(R.dimen.task_thumbnail_top_margin), outRect);
+    }
+
+    private void calculateTaskSizeInternal(Context context, DeviceProfile dp,
+            float extraVerticalSpace, float paddingHorz, float paddingVert, float topIconMargin,
+            Rect outRect) {
+        float taskWidth, taskHeight;
+        Rect insets = dp.getInsets();
+        if (dp.isMultiWindowMode) {
+            WindowBounds bounds = SplitScreenBounds.INSTANCE.getSecondaryWindowBounds(context);
+            taskWidth = bounds.availableSize.x;
+            taskHeight = bounds.availableSize.y;
+        } else {
+            taskWidth = dp.availableWidthPx;
+            taskHeight = dp.availableHeightPx;
+        }
+
+        // Note this should be same as dp.availableWidthPx and dp.availableHeightPx unless
+        // we override the insets ourselves.
+        int launcherVisibleWidth = dp.widthPx - insets.left - insets.right;
+        int launcherVisibleHeight = dp.heightPx - insets.top - insets.bottom;
+
+        float availableHeight = launcherVisibleHeight
+                - topIconMargin - extraVerticalSpace - paddingVert;
+        float availableWidth = launcherVisibleWidth - paddingHorz;
+
+        float scale = Math.min(availableWidth / taskWidth, availableHeight / taskHeight);
+        float outWidth = scale * taskWidth;
+        float outHeight = scale * taskHeight;
+
+        // Center in the visible space
+        float x = insets.left + (launcherVisibleWidth - outWidth) / 2;
+        float y = insets.top + Math.max(topIconMargin,
+                (launcherVisibleHeight - extraVerticalSpace - outHeight) / 2);
+        outRect.set(Math.round(x), Math.round(y),
+                Math.round(x) + Math.round(outWidth), Math.round(y) + Math.round(outHeight));
+    }
+
+    /**
+     * Calculates the modal taskView size for the provided device configuration
+     */
+    public void calculateModalTaskSize(Context context, DeviceProfile dp, Rect outRect) {
+        float paddingHorz = context.getResources().getDimension(dp.isMultiWindowMode
+                ? R.dimen.multi_window_task_card_horz_space
+                : dp.isVerticalBarLayout()
+                        ? R.dimen.landscape_task_card_horz_space
+                        : R.dimen.portrait_modal_task_card_horz_space);
+        float extraVerticalSpace = getOverviewActionsHeight(context);
+        float paddingVert = 0;
+        float topIconMargin = 0;
+        calculateTaskSizeInternal(context, dp, extraVerticalSpace, paddingHorz, paddingVert,
+                topIconMargin, outRect);
+    }
+
+    /** Gets the space that the overview actions will take, including margins. */
+    public float getOverviewActionsHeight(Context context) {
+        Resources res = context.getResources();
+        float actionsBottomMargin = 0;
+        if (getMode(context) == Mode.THREE_BUTTONS) {
+            actionsBottomMargin = res.getDimensionPixelSize(
+                    R.dimen.overview_actions_bottom_margin_three_button);
+        } else {
+            actionsBottomMargin = res.getDimensionPixelSize(
+                    R.dimen.overview_actions_bottom_margin_gesture);
+        }
+        float overviewActionsHeight = actionsBottomMargin
+                + res.getDimensionPixelSize(R.dimen.overview_actions_height);
+        return overviewActionsHeight;
+    }
+
+    public interface AnimationFactory {
 
         default void onRemoteAnimationReceived(RemoteAnimationTargets targets) { }
 
@@ -137,4 +296,8 @@
          */
         default void setRecentsAttachedToAppWindow(boolean attached, boolean animate) { }
     }
+
+    protected static boolean showOverviewActions(Context context) {
+        return ENABLE_OVERVIEW_ACTIONS.get() && removeShelfFromOverview(context);
+    }
 }
diff --git a/quickstep/src/com/android/quickstep/GestureState.java b/quickstep/src/com/android/quickstep/GestureState.java
index 9b515ae..295b465 100644
--- a/quickstep/src/com/android/quickstep/GestureState.java
+++ b/quickstep/src/com/android/quickstep/GestureState.java
@@ -17,10 +17,12 @@
 
 import static com.android.quickstep.MultiStateCallback.DEBUG_STATES;
 
+import android.annotation.TargetApi;
 import android.app.ActivityManager;
 import android.content.Intent;
+import android.os.Build;
 
-import com.android.launcher3.BaseDraggingActivity;
+import com.android.launcher3.statemanager.StatefulActivity;
 import com.android.launcher3.userevent.nano.LauncherLogProto.ContainerType;
 import com.android.systemui.shared.recents.model.ThumbnailData;
 import com.android.systemui.shared.system.RemoteAnimationTargetCompat;
@@ -32,6 +34,7 @@
  * Manages the state for an active system gesture, listens for events from the system and Launcher,
  * and fires events when the states change.
  */
+@TargetApi(Build.VERSION_CODES.R)
 public class GestureState implements RecentsAnimationCallbacks.RecentsAnimationListener {
 
     /**
@@ -189,7 +192,7 @@
     /**
      * @return the interface to the activity handing the UI updates for this gesture.
      */
-    public <T extends BaseDraggingActivity> BaseActivityInterface<T> getActivityInterface() {
+    public <T extends StatefulActivity<?>> BaseActivityInterface<?, T> getActivityInterface() {
         return mActivityInterface;
     }
 
diff --git a/quickstep/src/com/android/quickstep/OverviewComponentObserver.java b/quickstep/src/com/android/quickstep/OverviewComponentObserver.java
index 231ee72..0449d0c 100644
--- a/quickstep/src/com/android/quickstep/OverviewComponentObserver.java
+++ b/quickstep/src/com/android/quickstep/OverviewComponentObserver.java
@@ -140,7 +140,7 @@
 
         if (!mDeviceState.isHomeDisabled() && (defaultHome == null || mIsDefaultHome)) {
             // User default home is same as out home app. Use Overview integrated in Launcher.
-            mActivityInterface = new LauncherActivityInterface();
+            mActivityInterface = LauncherActivityInterface.INSTANCE;
             mIsHomeAndOverviewSame = true;
             mOverviewIntent = mMyHomeIntent;
             mCurrentHomeIntent.setComponent(mMyHomeIntent.getComponent());
@@ -150,7 +150,7 @@
         } else {
             // The default home app is a different launcher. Use the fallback Overview instead.
 
-            mActivityInterface = new FallbackActivityInterface();
+            mActivityInterface = FallbackActivityInterface.INSTANCE;
             mIsHomeAndOverviewSame = false;
             mOverviewIntent = mFallbackIntent;
             mCurrentHomeIntent.setComponent(defaultHome);
diff --git a/quickstep/src/com/android/quickstep/util/LayoutUtils.java b/quickstep/src/com/android/quickstep/util/LayoutUtils.java
index fa53be2..c1b276a 100644
--- a/quickstep/src/com/android/quickstep/util/LayoutUtils.java
+++ b/quickstep/src/com/android/quickstep/util/LayoutUtils.java
@@ -17,7 +17,6 @@
 
 import static com.android.launcher3.config.FeatureFlags.ENABLE_OVERVIEW_ACTIONS;
 import static com.android.quickstep.SysUINavigationMode.removeShelfFromOverview;
-import static com.android.quickstep.util.WindowSizeStrategy.LAUNCHER_ACTIVITY_SIZE_STRATEGY;
 
 import android.content.Context;
 import android.graphics.Rect;
@@ -26,6 +25,7 @@
 
 import com.android.launcher3.DeviceProfile;
 import com.android.launcher3.R;
+import com.android.quickstep.LauncherActivityInterface;
 import com.android.quickstep.SysUINavigationMode;
 
 public class LayoutUtils {
@@ -45,7 +45,7 @@
         // Track the bottom of the window.
         if (ENABLE_OVERVIEW_ACTIONS.get() && removeShelfFromOverview(context)) {
             Rect taskSize = new Rect();
-            LAUNCHER_ACTIVITY_SIZE_STRATEGY.calculateTaskSize(context, dp, taskSize);
+            LauncherActivityInterface.INSTANCE.calculateTaskSize(context, dp, taskSize);
             return (dp.heightPx - taskSize.height()) / 2;
         }
         int shelfHeight = dp.hotseatBarSizePx + dp.getInsets().bottom;
diff --git a/quickstep/src/com/android/quickstep/util/RecentsOrientedState.java b/quickstep/src/com/android/quickstep/util/RecentsOrientedState.java
index e7ff48f..e03f4b8 100644
--- a/quickstep/src/com/android/quickstep/util/RecentsOrientedState.java
+++ b/quickstep/src/com/android/quickstep/util/RecentsOrientedState.java
@@ -52,6 +52,7 @@
 import com.android.launcher3.testing.TestProtocol;
 import com.android.launcher3.touch.PagedOrientationHandler;
 import com.android.launcher3.util.WindowBounds;
+import com.android.quickstep.BaseActivityInterface;
 
 import java.lang.annotation.Retention;
 import java.util.function.IntConsumer;
@@ -121,7 +122,7 @@
     private final ContentResolver mContentResolver;
     private final SharedPreferences mSharedPrefs;
     private final OrientationEventListener mOrientationListener;
-    private final WindowSizeStrategy mSizeStrategy;
+    private final BaseActivityInterface mSizeStrategy;
 
     private final Matrix mTmpMatrix = new Matrix();
 
@@ -133,7 +134,7 @@
      *                              is enabled
      * @see #setRotationWatcherEnabled(boolean)
      */
-    public RecentsOrientedState(Context context, WindowSizeStrategy sizeStrategy,
+    public RecentsOrientedState(Context context, BaseActivityInterface sizeStrategy,
             IntConsumer rotationChangeListener) {
         mContext = context;
         mContentResolver = context.getContentResolver();
diff --git a/quickstep/src/com/android/quickstep/util/WindowSizeStrategy.java b/quickstep/src/com/android/quickstep/util/WindowSizeStrategy.java
deleted file mode 100644
index b088ba8..0000000
--- a/quickstep/src/com/android/quickstep/util/WindowSizeStrategy.java
+++ /dev/null
@@ -1,185 +0,0 @@
-/*
- * Copyright (C) 2020 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package com.android.quickstep.util;
-
-import static com.android.launcher3.config.FeatureFlags.ENABLE_OVERVIEW_ACTIONS;
-import static com.android.quickstep.SysUINavigationMode.getMode;
-import static com.android.quickstep.SysUINavigationMode.removeShelfFromOverview;
-import static com.android.quickstep.util.LayoutUtils.getDefaultSwipeHeight;
-
-import android.annotation.TargetApi;
-import android.content.Context;
-import android.content.res.Resources;
-import android.graphics.Rect;
-import android.os.Build;
-
-import com.android.launcher3.DeviceProfile;
-import com.android.launcher3.R;
-import com.android.launcher3.util.WindowBounds;
-import com.android.quickstep.SysUINavigationMode.Mode;
-
-/**
- * Utility class to wrap different layout behavior for Launcher and RecentsView
- * TODO: Merge is with {@link com.android.quickstep.BaseActivityInterface} once we remove the
- * state dependent members from {@link com.android.quickstep.LauncherActivityInterface}
- */
-@TargetApi(Build.VERSION_CODES.R)
-public abstract class WindowSizeStrategy {
-
-    public final boolean rotationSupportedByActivity;
-
-    private WindowSizeStrategy(boolean rotationSupportedByActivity) {
-        this.rotationSupportedByActivity = rotationSupportedByActivity;
-    }
-
-    /**
-     * Calculates the taskView size for the provided device configuration
-     */
-    public final void calculateTaskSize(Context context, DeviceProfile dp, Rect outRect) {
-        calculateTaskSize(context, dp, getExtraSpace(context, dp), outRect);
-    }
-
-    abstract float getExtraSpace(Context context, DeviceProfile dp);
-
-    private void calculateTaskSize(
-            Context context, DeviceProfile dp, float extraVerticalSpace, Rect outRect) {
-        Resources res = context.getResources();
-        final boolean showLargeTaskSize = showOverviewActions(context);
-
-        final int paddingResId;
-        if (dp.isMultiWindowMode) {
-            paddingResId = R.dimen.multi_window_task_card_horz_space;
-        } else if (dp.isVerticalBarLayout()) {
-            paddingResId = R.dimen.landscape_task_card_horz_space;
-        } else if (showLargeTaskSize) {
-            paddingResId = R.dimen.portrait_task_card_horz_space_big_overview;
-        } else {
-            paddingResId = R.dimen.portrait_task_card_horz_space;
-        }
-        float paddingHorz = res.getDimension(paddingResId);
-        float paddingVert = showLargeTaskSize
-                ? 0 : res.getDimension(R.dimen.task_card_vert_space);
-
-        calculateTaskSizeInternal(context, dp, extraVerticalSpace, paddingHorz, paddingVert,
-                res.getDimension(R.dimen.task_thumbnail_top_margin), outRect);
-    }
-
-    private void calculateTaskSizeInternal(Context context, DeviceProfile dp,
-            float extraVerticalSpace, float paddingHorz, float paddingVert, float topIconMargin,
-            Rect outRect) {
-        float taskWidth, taskHeight;
-        Rect insets = dp.getInsets();
-        if (dp.isMultiWindowMode) {
-            WindowBounds bounds = SplitScreenBounds.INSTANCE.getSecondaryWindowBounds(context);
-            taskWidth = bounds.availableSize.x;
-            taskHeight = bounds.availableSize.y;
-        } else {
-            taskWidth = dp.availableWidthPx;
-            taskHeight = dp.availableHeightPx;
-        }
-
-        // Note this should be same as dp.availableWidthPx and dp.availableHeightPx unless
-        // we override the insets ourselves.
-        int launcherVisibleWidth = dp.widthPx - insets.left - insets.right;
-        int launcherVisibleHeight = dp.heightPx - insets.top - insets.bottom;
-
-        float availableHeight = launcherVisibleHeight
-                - topIconMargin - extraVerticalSpace - paddingVert;
-        float availableWidth = launcherVisibleWidth - paddingHorz;
-
-        float scale = Math.min(availableWidth / taskWidth, availableHeight / taskHeight);
-        float outWidth = scale * taskWidth;
-        float outHeight = scale * taskHeight;
-
-        // Center in the visible space
-        float x = insets.left + (launcherVisibleWidth - outWidth) / 2;
-        float y = insets.top + Math.max(topIconMargin,
-                (launcherVisibleHeight - extraVerticalSpace - outHeight) / 2);
-        outRect.set(Math.round(x), Math.round(y),
-                Math.round(x) + Math.round(outWidth), Math.round(y) + Math.round(outHeight));
-    }
-
-    /**
-     * Calculates the modal taskView size for the provided device configuration
-     */
-    public void calculateModalTaskSize(Context context, DeviceProfile dp, Rect outRect) {
-        float paddingHorz = context.getResources().getDimension(dp.isMultiWindowMode
-                ? R.dimen.multi_window_task_card_horz_space
-                : dp.isVerticalBarLayout()
-                        ? R.dimen.landscape_task_card_horz_space
-                        : R.dimen.portrait_modal_task_card_horz_space);
-        float extraVerticalSpace = getOverviewActionsHeight(context);
-        float paddingVert = 0;
-        float topIconMargin = 0;
-        calculateTaskSizeInternal(context, dp, extraVerticalSpace, paddingHorz, paddingVert,
-                topIconMargin, outRect);
-    }
-
-    /** Gets the space that the overview actions will take, including margins. */
-    public float getOverviewActionsHeight(Context context) {
-        Resources res = context.getResources();
-        float actionsBottomMargin = 0;
-        if (getMode(context) == Mode.THREE_BUTTONS) {
-            actionsBottomMargin = res.getDimensionPixelSize(
-                R.dimen.overview_actions_bottom_margin_three_button);
-        } else {
-            actionsBottomMargin = res.getDimensionPixelSize(
-                R.dimen.overview_actions_bottom_margin_gesture);
-        }
-        float overviewActionsHeight = actionsBottomMargin
-                + res.getDimensionPixelSize(R.dimen.overview_actions_height);
-        return overviewActionsHeight;
-    }
-
-    public static final WindowSizeStrategy LAUNCHER_ACTIVITY_SIZE_STRATEGY =
-            new WindowSizeStrategy(true) {
-
-        @Override
-        float getExtraSpace(Context context, DeviceProfile dp) {
-            if (dp.isVerticalBarLayout()) {
-                return  0;
-            } else {
-                Resources res = context.getResources();
-                if (showOverviewActions(context)) {
-                    //TODO: this needs to account for the swipe gesture height and accessibility
-                    // UI when shown.
-                    return getOverviewActionsHeight(context);
-                } else {
-                    return getDefaultSwipeHeight(context, dp) + dp.workspacePageIndicatorHeight
-                            + res.getDimensionPixelSize(
-                                    R.dimen.dynamic_grid_hotseat_extra_vertical_size)
-                            + res.getDimensionPixelSize(
-                                    R.dimen.dynamic_grid_hotseat_bottom_padding);
-                }
-            }
-        }
-    };
-
-    public static final WindowSizeStrategy FALLBACK_RECENTS_SIZE_STRATEGY =
-            new WindowSizeStrategy(false) {
-
-        @Override
-        float getExtraSpace(Context context, DeviceProfile dp) {
-            return showOverviewActions(context)
-                    ? context.getResources().getDimensionPixelSize(R.dimen.overview_actions_height)
-                    : 0;
-        }
-    };
-
-    static boolean showOverviewActions(Context context) {
-        return ENABLE_OVERVIEW_ACTIONS.get() && removeShelfFromOverview(context);
-    }
-}