diff --git a/src/com/android/launcher3/BubbleTextView.java b/src/com/android/launcher3/BubbleTextView.java
index fc61155..8ae3073 100644
--- a/src/com/android/launcher3/BubbleTextView.java
+++ b/src/com/android/launcher3/BubbleTextView.java
@@ -419,7 +419,7 @@
         }
     }
 
-    private void setTextAlpha(int alpha) {
+    public void setTextAlpha(int alpha) {
         super.setTextColor(ColorUtils.setAlphaComponent(mTextColor, alpha));
     }
 
diff --git a/src/com/android/launcher3/DropTargetBar.java b/src/com/android/launcher3/DropTargetBar.java
index a3fe89a..dec6cb4 100644
--- a/src/com/android/launcher3/DropTargetBar.java
+++ b/src/com/android/launcher3/DropTargetBar.java
@@ -16,10 +16,10 @@
 
 package com.android.launcher3;
 
-import static com.android.launcher3.AlphaUpdateListener.updateVisibility;
 import static com.android.launcher3.ButtonDropTarget.TOOLTIP_DEFAULT;
 import static com.android.launcher3.ButtonDropTarget.TOOLTIP_LEFT;
 import static com.android.launcher3.ButtonDropTarget.TOOLTIP_RIGHT;
+import static com.android.launcher3.anim.AlphaUpdateListener.updateVisibility;
 import static com.android.launcher3.compat.AccessibilityManagerCompat.isAccessibilityEnabled;
 
 import android.animation.TimeInterpolator;
diff --git a/src/com/android/launcher3/Launcher.java b/src/com/android/launcher3/Launcher.java
index ee6dd59..82be592 100644
--- a/src/com/android/launcher3/Launcher.java
+++ b/src/com/android/launcher3/Launcher.java
@@ -364,6 +364,9 @@
             getRootView().dispatchInsets();
             getStateManager().reapplyState();
 
+            // Recreate touch controllers
+            mDragLayer.setup(mDragController);
+
             // TODO: We can probably avoid rebind when only screen size changed.
             rebindModel();
         }
@@ -956,7 +959,7 @@
         mDragController.setMoveTarget(mWorkspace);
         mDropTargetBar.setup(mDragController);
 
-        mAllAppsController.setupViews(mAppsView, mHotseat);
+        mAllAppsController.setupViews(mAppsView);
     }
 
     /**
@@ -1258,7 +1261,7 @@
 
                 // Reset the apps view
                 if (!alreadyOnHome && mAppsView != null) {
-                    mAppsView.reset();
+                    mAppsView.reset(isStarted() /* animate */);
                 }
 
                 if (shouldMoveToDefaultScreen && !mWorkspace.isTouchActive()) {
diff --git a/src/com/android/launcher3/LauncherRootView.java b/src/com/android/launcher3/LauncherRootView.java
index fc4de2d..b1273b6 100644
--- a/src/com/android/launcher3/LauncherRootView.java
+++ b/src/com/android/launcher3/LauncherRootView.java
@@ -29,6 +29,7 @@
     private int mRightInsetBarWidth;
 
     private View mAlignedView;
+    private WindowStateListener mWindowStateListener;
 
     public LauncherRootView(Context context, AttributeSet attrs) {
         super(context, attrs);
@@ -117,4 +118,31 @@
             }
         }
     }
+
+    public void setWindowStateListener(WindowStateListener listener) {
+        mWindowStateListener = listener;
+    }
+
+    @Override
+    public void onWindowFocusChanged(boolean hasWindowFocus) {
+        super.onWindowFocusChanged(hasWindowFocus);
+        if (mWindowStateListener != null) {
+            mWindowStateListener.onWindowFocusChanged(hasWindowFocus);
+        }
+    }
+
+    @Override
+    protected void onWindowVisibilityChanged(int visibility) {
+        super.onWindowVisibilityChanged(visibility);
+        if (mWindowStateListener != null) {
+            mWindowStateListener.onWindowVisibilityChanged(visibility);
+        }
+    }
+
+    public interface WindowStateListener {
+
+        void onWindowFocusChanged(boolean hasFocus);
+
+        void onWindowVisibilityChanged(int visibility);
+    }
 }
\ No newline at end of file
diff --git a/src/com/android/launcher3/LauncherState.java b/src/com/android/launcher3/LauncherState.java
index e5d8f47..9fef64a 100644
--- a/src/com/android/launcher3/LauncherState.java
+++ b/src/com/android/launcher3/LauncherState.java
@@ -40,6 +40,16 @@
  */
 public class LauncherState {
 
+
+    /**
+     * Set of elements indicating various workspace elements which change visibility across states
+     * Note that workspace is not included here as in that case, we animate individual pages
+     */
+    public static final int NONE = 0;
+    public static final int HOTSEAT = 1 << 0;
+    public static final int ALL_APPS_HEADER = 1 << 1;
+    public static final int ALL_APPS_CONTENT = 1 << 2;
+
     protected static final int FLAG_SHOW_SCRIM = 1 << 0;
     protected static final int FLAG_MULTI_PAGE = 1 << 1;
     protected static final int FLAG_DISABLE_ACCESSIBILITY = 1 << 2;
@@ -51,7 +61,6 @@
     protected static final int FLAG_DISABLE_INTERACTION = 1 << 8;
     protected static final int FLAG_OVERVIEW_UI = 1 << 9;
 
-
     protected static final PageAlphaProvider DEFAULT_ALPHA_PROVIDER =
             new PageAlphaProvider(ACCEL_2) {
                 @Override
@@ -68,13 +77,13 @@
     public static final LauncherState NORMAL = new LauncherState(0, ContainerType.WORKSPACE,
             0, FLAG_DISABLE_RESTORE | FLAG_WORKSPACE_ICONS_CAN_BE_DRAGGED);
 
-    public static final LauncherState ALL_APPS = new AllAppsState(1);
-
-    public static final LauncherState SPRING_LOADED = new SpringLoadedState(2);
-
-    public static final LauncherState OVERVIEW = new OverviewState(3);
-
-    public static final LauncherState FAST_OVERVIEW = new FastOverviewState(4);
+    /**
+     * Various Launcher states arranged in the increasing order of UI layers
+     */
+    public static final LauncherState SPRING_LOADED = new SpringLoadedState(1);
+    public static final LauncherState OVERVIEW = new OverviewState(2);
+    public static final LauncherState FAST_OVERVIEW = new FastOverviewState(3);
+    public static final LauncherState ALL_APPS = new AllAppsState(4);
 
     public final int ordinal;
 
@@ -161,10 +170,6 @@
         return new float[] {1, 0, 0};
     }
 
-    public float getHoseatAlpha(Launcher launcher) {
-        return 1f;
-    }
-
     public float getOverviewTranslationX(Launcher launcher) {
         return launcher.getDragLayer().getMeasuredWidth();
     }
@@ -179,6 +184,10 @@
         return launcher.getWorkspace();
     }
 
+    public int getVisibleElements(Launcher launcher) {
+        return HOTSEAT;
+    }
+
     /**
      * Fraction shift in the vertical translation UI and related properties
      *
diff --git a/src/com/android/launcher3/LauncherStateManager.java b/src/com/android/launcher3/LauncherStateManager.java
index 950a8ac..3c43035 100644
--- a/src/com/android/launcher3/LauncherStateManager.java
+++ b/src/com/android/launcher3/LauncherStateManager.java
@@ -17,6 +17,7 @@
 package com.android.launcher3;
 
 import static com.android.launcher3.LauncherState.NORMAL;
+import static com.android.launcher3.anim.PropertySetter.NO_ANIM_PROPERTY_SETTER;
 
 import android.animation.Animator;
 import android.animation.AnimatorListenerAdapter;
@@ -28,8 +29,12 @@
 import com.android.launcher3.anim.AnimationSuccessListener;
 import com.android.launcher3.anim.AnimatorPlaybackController;
 import com.android.launcher3.anim.AnimatorSetBuilder;
+import com.android.launcher3.anim.PropertySetter;
+import com.android.launcher3.anim.PropertySetter.AnimatedPropertySetter;
 import com.android.launcher3.uioverrides.UiFactory;
 
+import java.util.ArrayList;
+
 /**
  * TODO: figure out what kind of tests we can write for this
  *
@@ -78,6 +83,7 @@
     private final AnimationConfig mConfig = new AnimationConfig();
     private final Handler mUiHandler;
     private final Launcher mLauncher;
+    private final ArrayList<StateListener> mListeners = new ArrayList<>();
 
     private StateHandler[] mStateHandlers;
     private LauncherState mState = NORMAL;
@@ -87,8 +93,6 @@
 
     private LauncherState mRestState;
 
-    private StateListener mStateListener;
-
     public LauncherStateManager(Launcher l) {
         mUiHandler = new Handler(Looper.getMainLooper());
         mLauncher = l;
@@ -105,8 +109,12 @@
         return mStateHandlers;
     }
 
-    public void setStateListener(StateListener stateListener) {
-        mStateListener = stateListener;
+    public void addStateListener(StateListener listener) {
+        mListeners.add(listener);
+    }
+
+    public void removeStateListener(StateListener listener) {
+        mListeners.remove(listener);
     }
 
     /**
@@ -188,8 +196,9 @@
             for (StateHandler handler : getStateHandlers()) {
                 handler.setState(state);
             }
-            if (mStateListener != null) {
-                mStateListener.onStateSetImmediately(state);
+
+            for (int i = mListeners.size() - 1; i >= 0; i--) {
+                mListeners.get(i).onStateSetImmediately(state);
             }
             onStateTransitionEnd(state);
 
@@ -251,16 +260,16 @@
             public void onAnimationStart(Animator animation) {
                 // Change the internal state only when the transition actually starts
                 onStateTransitionStart(state);
-                if (mStateListener != null) {
-                    mStateListener.onStateTransitionStart(state);
+                for (int i = mListeners.size() - 1; i >= 0; i--) {
+                    mListeners.get(i).onStateTransitionStart(state);
                 }
             }
 
             @Override
             public void onAnimationEnd(Animator animation) {
                 super.onAnimationEnd(animation);
-                if (mStateListener != null) {
-                    mStateListener.onStateTransitionComplete(mState);
+                for (int i = mListeners.size() - 1; i >= 0; i--) {
+                    mListeners.get(i).onStateTransitionComplete(state);
                 }
             }
 
@@ -376,12 +385,14 @@
     public static class AnimationConfig extends AnimatorListenerAdapter {
         public long duration;
         public boolean userControlled;
+        private PropertySetter mProperSetter;
 
         private AnimatorSet mCurrentAnimation;
 
         public void reset() {
             duration = 0;
             userControlled = false;
+            mProperSetter = null;
 
             if (mCurrentAnimation != null) {
                 mCurrentAnimation.setDuration(0);
@@ -390,6 +401,14 @@
             }
         }
 
+        public PropertySetter getProperSetter(AnimatorSetBuilder builder) {
+            if (mProperSetter == null) {
+                mProperSetter = duration == 0 ? NO_ANIM_PROPERTY_SETTER
+                        : new AnimatedPropertySetter(duration, builder);
+            }
+            return mProperSetter;
+        }
+
         @Override
         public void onAnimationEnd(Animator animation) {
             if (mCurrentAnimation == animation) {
diff --git a/src/com/android/launcher3/WorkspaceStateTransitionAnimation.java b/src/com/android/launcher3/WorkspaceStateTransitionAnimation.java
index f6d0248..63c1181 100644
--- a/src/com/android/launcher3/WorkspaceStateTransitionAnimation.java
+++ b/src/com/android/launcher3/WorkspaceStateTransitionAnimation.java
@@ -18,6 +18,8 @@
 
 import static com.android.launcher3.LauncherAnimUtils.DRAWABLE_ALPHA;
 import static com.android.launcher3.LauncherAnimUtils.SCALE_PROPERTY;
+import static com.android.launcher3.LauncherState.HOTSEAT;
+import static com.android.launcher3.anim.PropertySetter.NO_ANIM_PROPERTY_SETTER;
 import static com.android.launcher3.compat.AccessibilityManagerCompat.isAccessibilityEnabled;
 
 import android.animation.Animator;
@@ -32,65 +34,14 @@
 import com.android.launcher3.LauncherStateManager.AnimationConfig;
 import com.android.launcher3.anim.AnimatorSetBuilder;
 import com.android.launcher3.anim.Interpolators;
+import com.android.launcher3.anim.PropertySetter;
 import com.android.launcher3.graphics.ViewScrim;
 
 /**
- * A convenience class to update a view's visibility state after an alpha animation.
- */
-class AlphaUpdateListener extends AnimatorListenerAdapter implements ValueAnimator.AnimatorUpdateListener {
-    private static final float ALPHA_CUTOFF_THRESHOLD = 0.01f;
-
-    private View mView;
-    private boolean mAccessibilityEnabled;
-    private boolean mCanceled = false;
-
-    public AlphaUpdateListener(View v, boolean accessibilityEnabled) {
-        mView = v;
-        mAccessibilityEnabled = accessibilityEnabled;
-    }
-
-    @Override
-    public void onAnimationUpdate(ValueAnimator arg0) {
-        updateVisibility(mView, mAccessibilityEnabled);
-    }
-
-    public static void updateVisibility(View view, boolean accessibilityEnabled) {
-        // We want to avoid the extra layout pass by setting the views to GONE unless
-        // accessibility is on, in which case not setting them to GONE causes a glitch.
-        int invisibleState = accessibilityEnabled ? View.GONE : View.INVISIBLE;
-        if (view.getAlpha() < ALPHA_CUTOFF_THRESHOLD && view.getVisibility() != invisibleState) {
-            view.setVisibility(invisibleState);
-        } else if (view.getAlpha() > ALPHA_CUTOFF_THRESHOLD
-                && view.getVisibility() != View.VISIBLE) {
-            view.setVisibility(View.VISIBLE);
-        }
-    }
-
-    @Override
-    public void onAnimationCancel(Animator animation) {
-        mCanceled = true;
-    }
-
-    @Override
-    public void onAnimationEnd(Animator arg0) {
-        if (mCanceled) return;
-        updateVisibility(mView, mAccessibilityEnabled);
-    }
-
-    @Override
-    public void onAnimationStart(Animator arg0) {
-        // We want the views to be visible for animation, so fade-in/out is visible
-        mView.setVisibility(View.VISIBLE);
-    }
-}
-
-/**
  * Manages the animations between each of the workspace states.
  */
 public class WorkspaceStateTransitionAnimation {
 
-    public static final PropertySetter NO_ANIM_PROPERTY_SETTER = new PropertySetter();
-
     private final Launcher mLauncher;
     private final Workspace mWorkspace;
 
@@ -107,9 +58,7 @@
 
     public void setStateWithAnimation(LauncherState toState, AnimatorSetBuilder builder,
             AnimationConfig config) {
-        AnimatedPropertySetter propertySetter =
-                new AnimatedPropertySetter(config.duration, builder);
-        setWorkspaceProperty(toState, propertySetter);
+        setWorkspaceProperty(toState, config.getProperSetter(builder));
     }
 
     public float getFinalScale() {
@@ -135,10 +84,12 @@
         propertySetter.setFloat(mWorkspace, View.TRANSLATION_Y,
                 scaleAndTranslation[2], Interpolators.ZOOM_IN);
 
-        propertySetter.setViewAlpha(mLauncher.getHotseat(), state.getHoseatAlpha(mLauncher),
+        int elements = state.getVisibleElements(mLauncher);
+        float hotseatAlpha = (elements & HOTSEAT) != 0 ? 1 : 0;
+        propertySetter.setViewAlpha(mLauncher.getHotseat(), hotseatAlpha,
                 pageAlphaProvider.interpolator);
         propertySetter.setViewAlpha(mLauncher.getWorkspace().getPageIndicator(),
-                state.getHoseatAlpha(mLauncher), pageAlphaProvider.interpolator);
+                hotseatAlpha, pageAlphaProvider.interpolator);
 
         // Set scrim
         propertySetter.setFloat(ViewScrim.get(mWorkspace), ViewScrim.PROGRESS,
@@ -162,71 +113,4 @@
         propertySetter.setFloat(cl.getShortcutsAndWidgets(), View.ALPHA,
                 pageAlpha, pageAlphaProvider.interpolator);
     }
-
-    public static class PropertySetter {
-
-        public void setViewAlpha(View view, float alpha, TimeInterpolator interpolator) {
-            view.setAlpha(alpha);
-            AlphaUpdateListener.updateVisibility(view, isAccessibilityEnabled(view.getContext()));
-        }
-
-        public <T> void setFloat(T target, Property<T, Float> property, float value,
-                TimeInterpolator interpolator) {
-            property.set(target, value);
-        }
-
-        public <T> void setInt(T target, Property<T, Integer> property, int value,
-                TimeInterpolator interpolator) {
-            property.set(target, value);
-        }
-    }
-
-    public static class AnimatedPropertySetter extends PropertySetter {
-
-        private final long mDuration;
-        private final AnimatorSetBuilder mStateAnimator;
-
-        public AnimatedPropertySetter(long duration, AnimatorSetBuilder builder) {
-            mDuration = duration;
-            mStateAnimator = builder;
-        }
-
-        @Override
-        public void setViewAlpha(View view, float alpha, TimeInterpolator interpolator) {
-            if (view.getAlpha() == alpha) {
-                return;
-            }
-            ObjectAnimator anim = ObjectAnimator.ofFloat(view, View.ALPHA, alpha);
-            anim.addListener(new AlphaUpdateListener(
-                    view, isAccessibilityEnabled(view.getContext())));
-            anim.setDuration(mDuration).setInterpolator(interpolator);
-            mStateAnimator.play(anim);
-        }
-
-        @Override
-        public <T> void setFloat(T target, Property<T, Float> property, float value,
-                TimeInterpolator interpolator) {
-            if (property.get(target) == value) {
-                return;
-            }
-            Animator anim = ObjectAnimator.ofFloat(target, property, value);
-            anim.setDuration(mDuration).setInterpolator(interpolator);
-            mStateAnimator.play(anim);
-        }
-
-        @Override
-        public <T> void setInt(T target, Property<T, Integer> property, int value,
-                TimeInterpolator interpolator) {
-            if (property.get(target) == value) {
-                return;
-            }
-            Animator anim = ObjectAnimator.ofInt(target, property, value);
-            anim.setDuration(mDuration).setInterpolator(interpolator);
-            mStateAnimator.play(anim);
-        }
-
-        private TimeInterpolator getFadeInterpolator(float finalAlpha) {
-            return finalAlpha == 0 ? Interpolators.DEACCEL_2 : null;
-        }
-    }
 }
\ No newline at end of file
diff --git a/src/com/android/launcher3/allapps/AllAppsContainerView.java b/src/com/android/launcher3/allapps/AllAppsContainerView.java
index 39a8df3..8f5fcf5 100644
--- a/src/com/android/launcher3/allapps/AllAppsContainerView.java
+++ b/src/com/android/launcher3/allapps/AllAppsContainerView.java
@@ -217,14 +217,14 @@
     /**
      * Resets the state of AllApps.
      */
-    public void reset() {
+    public void reset(boolean animate) {
         for (int i = 0; i < mAH.length; i++) {
             if (mAH[i].recyclerView != null) {
                 mAH[i].recyclerView.scrollToTop();
             }
         }
         if (isHeaderVisible()) {
-            mHeader.reset();
+            mHeader.reset(animate);
         }
         // Reset the search bar and base recycler view after transitioning home
         mSearchUiManager.resetSearch();
@@ -360,7 +360,7 @@
 
     public void onTabChanged(int pos) {
         mHeader.setMainActive(pos == 0);
-        reset();
+        reset(true /* animate */);
         if (mAH[pos].recyclerView != null) {
             mAH[pos].recyclerView.bindFastScrollbar();
 
@@ -383,6 +383,18 @@
         return mHeader;
     }
 
+    public View getSearchView() {
+        return mSearchContainer;
+    }
+
+    public View getContentView() {
+        return mViewPager == null ? getActiveRecyclerView() : mViewPager;
+    }
+
+    public RecyclerViewFastScroller getScrollBar() {
+        return getActiveRecyclerView().getScrollbar();
+    }
+
     public void setupHeader() {
         mHeader.setVisibility(View.VISIBLE);
         mHeader.setup(mAH, mAH[AllAppsContainerView.AdapterHolder.WORK].recyclerView == null);
diff --git a/src/com/android/launcher3/allapps/AllAppsTransitionController.java b/src/com/android/launcher3/allapps/AllAppsTransitionController.java
index 13a42f1..bf8f531 100644
--- a/src/com/android/launcher3/allapps/AllAppsTransitionController.java
+++ b/src/com/android/launcher3/allapps/AllAppsTransitionController.java
@@ -1,7 +1,10 @@
 package com.android.launcher3.allapps;
 
+import static com.android.launcher3.LauncherState.ALL_APPS_CONTENT;
+import static com.android.launcher3.LauncherState.ALL_APPS_HEADER;
 import static com.android.launcher3.anim.Interpolators.FAST_OUT_SLOW_IN;
 import static com.android.launcher3.anim.Interpolators.LINEAR;
+import static com.android.launcher3.anim.PropertySetter.NO_ANIM_PROPERTY_SETTER;
 import static com.android.launcher3.util.SystemUiController.UI_STATE_ALL_APPS;
 
 import android.animation.Animator;
@@ -13,16 +16,15 @@
 
 import com.android.launcher3.DeviceProfile;
 import com.android.launcher3.DeviceProfile.OnDeviceProfileChangeListener;
-import com.android.launcher3.Hotseat;
 import com.android.launcher3.Launcher;
 import com.android.launcher3.LauncherState;
 import com.android.launcher3.LauncherStateManager.AnimationConfig;
 import com.android.launcher3.LauncherStateManager.StateHandler;
 import com.android.launcher3.R;
-import com.android.launcher3.Utilities;
 import com.android.launcher3.allapps.SearchUiManager.OnScrollRangeChangeListener;
 import com.android.launcher3.anim.AnimationSuccessListener;
 import com.android.launcher3.anim.AnimatorSetBuilder;
+import com.android.launcher3.anim.PropertySetter;
 import com.android.launcher3.util.Themes;
 
 /**
@@ -55,7 +57,6 @@
     public static final float PARALLAX_COEFFICIENT = .125f;
 
     private AllAppsContainerView mAppsView;
-    private Hotseat mHotseat;
 
     private final Launcher mLauncher;
     private final boolean mIsDarkTheme;
@@ -88,7 +89,6 @@
 
     private void onProgressAnimationStart() {
         // Initialize values that should not change until #onDragEnd
-        mHotseat.setVisibility(View.VISIBLE);
         mAppsView.setVisibility(View.VISIBLE);
     }
 
@@ -116,14 +116,10 @@
         mProgress = progress;
         float shiftCurrent = progress * mShiftRange;
 
-        float workspaceHotseatAlpha = Utilities.boundToRange(progress, 0f, 1f);
-        float alpha = 1 - workspaceHotseatAlpha;
-
         mAppsView.setTranslationY(shiftCurrent);
         float hotseatTranslation = -mShiftRange + shiftCurrent;
 
         if (!mIsVerticalLayout) {
-            mAppsView.setAlpha(alpha);
             mLauncher.getHotseat().setTranslationY(hotseatTranslation);
             mLauncher.getWorkspace().getPageIndicator().setTranslationY(hotseatTranslation);
         }
@@ -149,6 +145,7 @@
     @Override
     public void setState(LauncherState state) {
         setProgress(state.getVerticalProgress(mLauncher));
+        setAlphas(state, NO_ANIM_PROPERTY_SETTER);
         onProgressAnimationEnd();
     }
 
@@ -161,6 +158,7 @@
             AnimatorSetBuilder builder, AnimationConfig config) {
         float targetProgress = toState.getVerticalProgress(mLauncher);
         if (Float.compare(mProgress, targetProgress) == 0) {
+            setAlphas(toState, config.getProperSetter(builder));
             // Fail fast
             onProgressAnimationEnd();
             return;
@@ -174,6 +172,19 @@
         anim.addListener(getProgressAnimatorListener());
 
         builder.play(anim);
+
+        setAlphas(toState, config.getProperSetter(builder));
+    }
+
+    private void setAlphas(LauncherState toState, PropertySetter setter) {
+        int visibleElements = toState.getVisibleElements(mLauncher);
+        boolean hasHeader = (visibleElements & ALL_APPS_HEADER) != 0;
+        boolean hasContent = (visibleElements & ALL_APPS_CONTENT) != 0;
+
+        setter.setViewAlpha(mAppsView.getSearchView(), hasHeader ? 1 : 0, LINEAR);
+        setter.setViewAlpha(mAppsView.getContentView(), hasContent ? 1 : 0, LINEAR);
+        setter.setViewAlpha(mAppsView.getScrollBar(), hasContent ? 1 : 0, LINEAR);
+        mAppsView.getFloatingHeaderView().setContentVisibility(hasHeader, hasContent, setter);
     }
 
     public AnimatorListenerAdapter getProgressAnimatorListener() {
@@ -190,10 +201,8 @@
         };
     }
 
-    public void setupViews(AllAppsContainerView appsView, Hotseat hotseat) {
+    public void setupViews(AllAppsContainerView appsView) {
         mAppsView = appsView;
-        mHotseat = hotseat;
-        mHotseat.bringToFront();
         mAppsView.getSearchUiManager().addOnScrollRangeChangeListener(this);
     }
 
@@ -210,15 +219,12 @@
     private void onProgressAnimationEnd() {
         if (Float.compare(mProgress, 1f) == 0) {
             mAppsView.setVisibility(View.INVISIBLE);
-            mHotseat.setVisibility(View.VISIBLE);
-            mAppsView.reset();
+            mAppsView.reset(false /* animate */);
         } else if (Float.compare(mProgress, 0f) == 0) {
-            mHotseat.setVisibility(View.INVISIBLE);
             mAppsView.setVisibility(View.VISIBLE);
             mAppsView.onScrollUpEnd();
         } else {
             mAppsView.setVisibility(View.VISIBLE);
-            mHotseat.setVisibility(View.VISIBLE);
         }
     }
 }
diff --git a/src/com/android/launcher3/allapps/FloatingHeaderView.java b/src/com/android/launcher3/allapps/FloatingHeaderView.java
index a0dc5a3..461f5b5 100644
--- a/src/com/android/launcher3/allapps/FloatingHeaderView.java
+++ b/src/com/android/launcher3/allapps/FloatingHeaderView.java
@@ -15,6 +15,8 @@
  */
 package com.android.launcher3.allapps;
 
+import static com.android.launcher3.anim.Interpolators.LINEAR;
+
 import android.animation.ValueAnimator;
 import android.content.Context;
 import android.graphics.Point;
@@ -29,6 +31,7 @@
 import android.widget.LinearLayout;
 
 import com.android.launcher3.R;
+import com.android.launcher3.anim.PropertySetter;
 
 public class FloatingHeaderView extends LinearLayout implements
         ValueAnimator.AnimatorUpdateListener {
@@ -57,7 +60,7 @@
         }
     };
 
-    private ViewGroup mTabLayout;
+    protected ViewGroup mTabLayout;
     private AllAppsRecyclerView mMainRV;
     private AllAppsRecyclerView mWorkRV;
     private AllAppsRecyclerView mCurrentRV;
@@ -65,6 +68,8 @@
     private boolean mHeaderCollapsed;
     private int mSnappedScrolledY;
     private int mTranslationY;
+
+    private boolean mAllowTouchForwarding;
     private boolean mForwardToRecyclerView;
 
     protected boolean mTabsHidden;
@@ -91,7 +96,7 @@
         mWorkRV = setupRV(mWorkRV, mAH[AllAppsContainerView.AdapterHolder.WORK].recyclerView);
         mParent = (ViewGroup) mMainRV.getParent();
         setMainActive(true);
-        reset();
+        reset(false);
     }
 
     private AllAppsRecyclerView setupRV(AllAppsRecyclerView old, AllAppsRecyclerView updated) {
@@ -158,12 +163,19 @@
         }
     }
 
-    public void reset() {
-        int translateTo = 0;
-        mAnimator.setIntValues(mTranslationY, translateTo);
-        mAnimator.addUpdateListener(this);
-        mAnimator.setDuration(150);
-        mAnimator.start();
+    public void reset(boolean animate) {
+        if (mAnimator.isStarted()) {
+            mAnimator.cancel();
+        }
+        if (animate) {
+            mAnimator.setIntValues(mTranslationY, 0);
+            mAnimator.addUpdateListener(this);
+            mAnimator.setDuration(150);
+            mAnimator.start();
+        } else {
+            mTranslationY = 0;
+            apply();
+        }
         mHeaderCollapsed = false;
         mSnappedScrolledY = -mMaxTranslation;
         mCurrentRV.scrollToTop();
@@ -181,6 +193,10 @@
 
     @Override
     public boolean onInterceptTouchEvent(MotionEvent ev) {
+        if (!mAllowTouchForwarding) {
+            mForwardToRecyclerView = false;
+            return super.onInterceptTouchEvent(ev);
+        }
         calcOffset(mTempOffset);
         ev.offsetLocation(mTempOffset.x, mTempOffset.y);
         mForwardToRecyclerView = mCurrentRV.onInterceptTouchEvent(ev);
@@ -208,6 +224,19 @@
         p.x = getLeft() - mCurrentRV.getLeft() - mParent.getLeft();
         p.y = getTop() - mCurrentRV.getTop() - mParent.getTop();
     }
+
+    public void setContentVisibility(boolean hasHeader, boolean hasContent, PropertySetter setter) {
+        setter.setViewAlpha(this, hasContent ? 1 : 0, LINEAR);
+        allowTouchForwarding(hasContent);
+    }
+
+    protected void allowTouchForwarding(boolean allow) {
+        mAllowTouchForwarding = allow;
+    }
+
+    public boolean hasVisibleContent() {
+        return false;
+    }
 }
 
 
diff --git a/src/com/android/launcher3/anim/AlphaUpdateListener.java b/src/com/android/launcher3/anim/AlphaUpdateListener.java
new file mode 100644
index 0000000..04d97a7
--- /dev/null
+++ b/src/com/android/launcher3/anim/AlphaUpdateListener.java
@@ -0,0 +1,73 @@
+/*
+ * Copyright (C) 2018 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.launcher3.anim;
+
+import android.animation.Animator;
+import android.animation.AnimatorListenerAdapter;
+import android.animation.ValueAnimator;
+import android.animation.ValueAnimator.AnimatorUpdateListener;
+import android.view.View;
+
+/**
+ * A convenience class to update a view's visibility state after an alpha animation.
+ */
+public class AlphaUpdateListener extends AnimatorListenerAdapter implements AnimatorUpdateListener {
+    private static final float ALPHA_CUTOFF_THRESHOLD = 0.01f;
+
+    private View mView;
+    private boolean mAccessibilityEnabled;
+    private boolean mCanceled = false;
+
+    public AlphaUpdateListener(View v, boolean accessibilityEnabled) {
+        mView = v;
+        mAccessibilityEnabled = accessibilityEnabled;
+    }
+
+    @Override
+    public void onAnimationUpdate(ValueAnimator arg0) {
+        updateVisibility(mView, mAccessibilityEnabled);
+    }
+
+    public static void updateVisibility(View view, boolean accessibilityEnabled) {
+        // We want to avoid the extra layout pass by setting the views to GONE unless
+        // accessibility is on, in which case not setting them to GONE causes a glitch.
+        int invisibleState = accessibilityEnabled ? View.GONE : View.INVISIBLE;
+        if (view.getAlpha() < ALPHA_CUTOFF_THRESHOLD && view.getVisibility() != invisibleState) {
+            view.setVisibility(invisibleState);
+        } else if (view.getAlpha() > ALPHA_CUTOFF_THRESHOLD
+                && view.getVisibility() != View.VISIBLE) {
+            view.setVisibility(View.VISIBLE);
+        }
+    }
+
+    @Override
+    public void onAnimationCancel(Animator animation) {
+        mCanceled = true;
+    }
+
+    @Override
+    public void onAnimationEnd(Animator arg0) {
+        if (mCanceled) return;
+        updateVisibility(mView, mAccessibilityEnabled);
+    }
+
+    @Override
+    public void onAnimationStart(Animator arg0) {
+        // We want the views to be visible for animation, so fade-in/out is visible
+        mView.setVisibility(View.VISIBLE);
+    }
+}
\ No newline at end of file
diff --git a/src/com/android/launcher3/anim/PropertySetter.java b/src/com/android/launcher3/anim/PropertySetter.java
new file mode 100644
index 0000000..51580b1
--- /dev/null
+++ b/src/com/android/launcher3/anim/PropertySetter.java
@@ -0,0 +1,93 @@
+/*
+ * Copyright (C) 2016 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.launcher3.anim;
+
+import static com.android.launcher3.compat.AccessibilityManagerCompat.isAccessibilityEnabled;
+
+import android.animation.Animator;
+import android.animation.ObjectAnimator;
+import android.animation.TimeInterpolator;
+import android.util.Property;
+import android.view.View;
+
+/**
+ * Utility class for setting a property with or without animation
+ */
+public class PropertySetter {
+
+    public static final PropertySetter NO_ANIM_PROPERTY_SETTER = new PropertySetter();
+
+    public void setViewAlpha(View view, float alpha, TimeInterpolator interpolator) {
+        view.setAlpha(alpha);
+        AlphaUpdateListener.updateVisibility(view, isAccessibilityEnabled(view.getContext()));
+    }
+
+    public <T> void setFloat(T target, Property<T, Float> property, float value,
+            TimeInterpolator interpolator) {
+        property.set(target, value);
+    }
+
+    public <T> void setInt(T target, Property<T, Integer> property, int value,
+            TimeInterpolator interpolator) {
+        property.set(target, value);
+    }
+
+    public static class AnimatedPropertySetter extends PropertySetter {
+
+        private final long mDuration;
+        private final AnimatorSetBuilder mStateAnimator;
+
+        public AnimatedPropertySetter(long duration, AnimatorSetBuilder builder) {
+            mDuration = duration;
+            mStateAnimator = builder;
+        }
+
+        @Override
+        public void setViewAlpha(View view, float alpha, TimeInterpolator interpolator) {
+            if (view.getAlpha() == alpha) {
+                return;
+            }
+            ObjectAnimator anim = ObjectAnimator.ofFloat(view, View.ALPHA, alpha);
+            anim.addListener(new AlphaUpdateListener(
+                    view, isAccessibilityEnabled(view.getContext())));
+            anim.setDuration(mDuration).setInterpolator(interpolator);
+            mStateAnimator.play(anim);
+        }
+
+        @Override
+        public <T> void setFloat(T target, Property<T, Float> property, float value,
+                TimeInterpolator interpolator) {
+            if (property.get(target) == value) {
+                return;
+            }
+            Animator anim = ObjectAnimator.ofFloat(target, property, value);
+            anim.setDuration(mDuration).setInterpolator(interpolator);
+            mStateAnimator.play(anim);
+        }
+
+        @Override
+        public <T> void setInt(T target, Property<T, Integer> property, int value,
+                TimeInterpolator interpolator) {
+            if (property.get(target) == value) {
+                return;
+            }
+            Animator anim = ObjectAnimator.ofInt(target, property, value);
+            anim.setDuration(mDuration).setInterpolator(interpolator);
+            mStateAnimator.play(anim);
+        }
+    }
+}
diff --git a/src/com/android/launcher3/config/BaseFlags.java b/src/com/android/launcher3/config/BaseFlags.java
index 28645dc..78ea419 100644
--- a/src/com/android/launcher3/config/BaseFlags.java
+++ b/src/com/android/launcher3/config/BaseFlags.java
@@ -51,6 +51,4 @@
 
     // When enabled shows a work profile tab in all apps
     public static final boolean ALL_APPS_TABS_ENABLED = true;
-
-    public static final boolean ENABLE_TWO_SWIPE_TARGETS = true;
 }
diff --git a/src/com/android/launcher3/touch/AbstractStateChangeTouchController.java b/src/com/android/launcher3/touch/AbstractStateChangeTouchController.java
new file mode 100644
index 0000000..db53634
--- /dev/null
+++ b/src/com/android/launcher3/touch/AbstractStateChangeTouchController.java
@@ -0,0 +1,230 @@
+/*
+ * Copyright (C) 2019 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.launcher3.touch;
+
+import static com.android.launcher3.anim.Interpolators.scrollInterpolatorForVelocity;
+
+import android.animation.Animator;
+import android.animation.AnimatorListenerAdapter;
+import android.animation.ValueAnimator;
+import android.util.Log;
+import android.view.MotionEvent;
+
+import com.android.launcher3.Launcher;
+import com.android.launcher3.LauncherState;
+import com.android.launcher3.Utilities;
+import com.android.launcher3.anim.AnimatorPlaybackController;
+import com.android.launcher3.userevent.nano.LauncherLogProto.Action.Direction;
+import com.android.launcher3.userevent.nano.LauncherLogProto.Action.Touch;
+import com.android.launcher3.util.TouchController;
+
+/**
+ * TouchController for handling state changes
+ */
+public abstract class AbstractStateChangeTouchController extends AnimatorListenerAdapter
+        implements TouchController, SwipeDetector.Listener {
+
+    private static final String TAG = "ASCTouchController";
+    public static final float RECATCH_REJECTION_FRACTION = .0875f;
+    public static final int SINGLE_FRAME_MS = 16;
+
+    // Progress after which the transition is assumed to be a success in case user does not fling
+    public static final float SUCCESS_TRANSITION_PROGRESS = 0.5f;
+
+    protected final Launcher mLauncher;
+    protected final SwipeDetector mDetector;
+
+    private boolean mNoIntercept;
+    protected int mStartContainerType;
+
+    protected LauncherState mFromState;
+    protected LauncherState mToState;
+    protected AnimatorPlaybackController mCurrentAnimation;
+
+    private float mStartProgress;
+    // Ratio of transition process [0, 1] to drag displacement (px)
+    private float mProgressMultiplier;
+
+    public AbstractStateChangeTouchController(Launcher l, SwipeDetector.Direction dir) {
+        mLauncher = l;
+        mDetector = new SwipeDetector(l, this, dir);
+    }
+
+    protected abstract boolean canInterceptTouch(MotionEvent ev);
+
+    /**
+     * Initializes the {@code mFromState} and {@code mToState} and swipe direction to use for
+     * the detector. In can of disabling swipe, return 0.
+     */
+    protected abstract int getSwipeDirection(MotionEvent ev);
+
+    @Override
+    public final boolean onControllerInterceptTouchEvent(MotionEvent ev) {
+        if (ev.getAction() == MotionEvent.ACTION_DOWN) {
+            mNoIntercept = !canInterceptTouch(ev);
+            if (mNoIntercept) {
+                return false;
+            }
+
+            // Now figure out which direction scroll events the controller will start
+            // calling the callbacks.
+            final int directionsToDetectScroll;
+            boolean ignoreSlopWhenSettling = false;
+
+            if (mCurrentAnimation != null) {
+                if (mCurrentAnimation.getProgressFraction() > 1 - RECATCH_REJECTION_FRACTION) {
+                    directionsToDetectScroll = SwipeDetector.DIRECTION_POSITIVE;
+                } else if (mCurrentAnimation.getProgressFraction() < RECATCH_REJECTION_FRACTION ) {
+                    directionsToDetectScroll = SwipeDetector.DIRECTION_NEGATIVE;
+                } else {
+                    directionsToDetectScroll = SwipeDetector.DIRECTION_BOTH;
+                    ignoreSlopWhenSettling = true;
+                }
+            } else {
+                directionsToDetectScroll = getSwipeDirection(ev);
+                if (directionsToDetectScroll == 0) {
+                    mNoIntercept = true;
+                    return false;
+                }
+            }
+            mDetector.setDetectableScrollConditions(
+                    directionsToDetectScroll, ignoreSlopWhenSettling);
+        }
+
+        if (mNoIntercept) {
+            return false;
+        }
+
+        onControllerTouchEvent(ev);
+        return mDetector.isDraggingOrSettling();
+    }
+
+    @Override
+    public final boolean onControllerTouchEvent(MotionEvent ev) {
+        return mDetector.onTouchEvent(ev);
+    }
+
+    protected float getShiftRange() {
+        return mLauncher.getAllAppsController().getShiftRange();
+    }
+
+    protected abstract float initCurrentAnimation();
+
+    @Override
+    public void onDragStart(boolean start) {
+        if (mCurrentAnimation == null) {
+            mStartProgress = 0;
+            mProgressMultiplier = initCurrentAnimation();
+
+            mCurrentAnimation.getTarget().addListener(this);
+            mCurrentAnimation.dispatchOnStart();
+        } else {
+            mCurrentAnimation.pause();
+            mStartProgress = mCurrentAnimation.getProgressFraction();
+        }
+    }
+
+    @Override
+    public boolean onDrag(float displacement, float velocity) {
+        float deltaProgress = mProgressMultiplier * displacement;
+        mCurrentAnimation.setPlayFraction(deltaProgress + mStartProgress);
+        return true;
+    }
+
+    @Override
+    public void onDragEnd(float velocity, boolean fling) {
+        final int logAction;
+        final LauncherState targetState;
+        final float progress = mCurrentAnimation.getProgressFraction();
+
+        if (fling) {
+            logAction = Touch.FLING;
+            targetState =
+                    Float.compare(Math.signum(velocity), Math.signum(mProgressMultiplier)) == 0
+                            ? mToState : mFromState;
+            // snap to top or bottom using the release velocity
+        } else {
+            logAction = Touch.SWIPE;
+            targetState = (progress > SUCCESS_TRANSITION_PROGRESS) ? mToState : mFromState;
+        }
+
+
+        final float endProgress;
+        final float startProgress;
+        final long duration;
+
+        if (targetState == mToState) {
+            endProgress = 1;
+            if (progress >= 1) {
+                duration = 0;
+                startProgress = 1;
+            } else {
+                startProgress = Utilities.boundToRange(
+                        progress + velocity * SINGLE_FRAME_MS / getShiftRange(), 0f, 1f);
+                duration = SwipeDetector.calculateDuration(velocity,
+                        endProgress - Math.max(progress, 0));
+            }
+        } else {
+            endProgress = 0;
+            if (progress <= 0) {
+                duration = 0;
+                startProgress = 0;
+            } else {
+                startProgress = Utilities.boundToRange(
+                        progress + velocity * SINGLE_FRAME_MS / getShiftRange(), 0f, 1f);
+                duration = SwipeDetector.calculateDuration(velocity,
+                        Math.min(progress, 1) - endProgress);
+            }
+        }
+
+        mCurrentAnimation.setEndAction(() -> onSwipeInteractionCompleted(targetState, logAction));
+        ValueAnimator anim = mCurrentAnimation.getAnimationPlayer();
+        anim.setFloatValues(startProgress, endProgress);
+        anim.setDuration(duration).setInterpolator(scrollInterpolatorForVelocity(velocity));
+        anim.start();
+    }
+
+    protected int getDirectionForLog() {
+        return mToState.ordinal > mFromState.ordinal ? Direction.UP : Direction.DOWN;
+    }
+
+    protected void onSwipeInteractionCompleted(LauncherState targetState, int logAction) {
+        if (targetState != mFromState) {
+            // Transition complete. log the action
+            mLauncher.getUserEventDispatcher().logStateChangeAction(logAction,
+                    getDirectionForLog(),
+                    mStartContainerType,
+                    mFromState.containerType,
+                    mToState.containerType,
+                    mLauncher.getWorkspace().getCurrentPage());
+        }
+        clearState();
+        mLauncher.getStateManager().goToState(targetState, false /* animated */);
+    }
+
+    protected void clearState() {
+        mCurrentAnimation = null;
+        mDetector.finishedScrolling();
+    }
+
+    @Override
+    public void onAnimationCancel(Animator animation) {
+        if (mCurrentAnimation != null && animation == mCurrentAnimation.getOriginalTarget()) {
+            Log.e(TAG, "Who dare cancel the animation when I am in control", new Exception());
+            clearState();
+        }
+    }
+}
diff --git a/src/com/android/launcher3/touch/ItemLongClickListener.java b/src/com/android/launcher3/touch/ItemLongClickListener.java
index f10a695..6f012f6 100644
--- a/src/com/android/launcher3/touch/ItemLongClickListener.java
+++ b/src/com/android/launcher3/touch/ItemLongClickListener.java
@@ -18,6 +18,7 @@
 import static android.view.View.INVISIBLE;
 import static android.view.View.VISIBLE;
 
+import static com.android.launcher3.LauncherState.ALL_APPS;
 import static com.android.launcher3.LauncherState.NORMAL;
 import static com.android.launcher3.LauncherState.OVERVIEW;
 
@@ -78,8 +79,8 @@
         Launcher launcher = Launcher.getLauncher(v.getContext());
         if (!canStartDrag(launcher)) return false;
         // When we have exited all apps or are in transition, disregard long clicks
-        if (!launcher.isInState(LauncherState.ALL_APPS) ||
-                launcher.getWorkspace().isSwitchingState()) return false;
+        if (!launcher.isInState(ALL_APPS) && !launcher.isInState(OVERVIEW)) return false;
+        if (launcher.getWorkspace().isSwitchingState()) return false;
 
         // Start the drag
         final DragController dragController = launcher.getDragController();
diff --git a/src/com/android/launcher3/util/VerticalSwipeController.java b/src/com/android/launcher3/util/VerticalSwipeController.java
deleted file mode 100644
index ae5bfd5..0000000
--- a/src/com/android/launcher3/util/VerticalSwipeController.java
+++ /dev/null
@@ -1,224 +0,0 @@
-/*
- * Copyright (C) 2017 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.launcher3.util;
-
-import static com.android.launcher3.LauncherState.ALL_APPS;
-import static com.android.launcher3.anim.Interpolators.scrollInterpolatorForVelocity;
-
-import android.animation.Animator;
-import android.animation.AnimatorListenerAdapter;
-import android.animation.ValueAnimator;
-import android.util.Log;
-import android.view.MotionEvent;
-
-import com.android.launcher3.AbstractFloatingView;
-import com.android.launcher3.Launcher;
-import com.android.launcher3.LauncherState;
-import com.android.launcher3.Utilities;
-import com.android.launcher3.anim.AnimatorPlaybackController;
-import com.android.launcher3.touch.SwipeDetector;
-import com.android.launcher3.touch.SwipeDetector.Direction;
-
-
-/**
- * Handles vertical touch gesture on the DragLayer allowing transitioning from
- * {@link #mBaseState} to {@link LauncherState#ALL_APPS} and vice-versa.
- */
-public abstract class VerticalSwipeController extends AnimatorListenerAdapter
-        implements TouchController, SwipeDetector.Listener {
-
-    private static final String TAG = "VerticalSwipeController";
-
-    private static final float RECATCH_REJECTION_FRACTION = .0875f;
-    private static final int SINGLE_FRAME_MS = 16;
-
-    // Progress after which the transition is assumed to be a success in case user does not fling
-    private static final float SUCCESS_TRANSITION_PROGRESS = 0.5f;
-
-    protected final Launcher mLauncher;
-    protected final SwipeDetector mDetector;
-    private final LauncherState mBaseState;
-    private final LauncherState mTargetState;
-
-    private boolean mNoIntercept;
-
-    private AnimatorPlaybackController mCurrentAnimation;
-    protected LauncherState mToState;
-
-    private float mStartProgress;
-    // Ratio of transition process [0, 1] to drag displacement (px)
-    private float mProgressMultiplier;
-
-    public VerticalSwipeController(Launcher l, LauncherState baseState) {
-        this(l, baseState, ALL_APPS, SwipeDetector.VERTICAL);
-    }
-
-    public VerticalSwipeController(
-            Launcher l, LauncherState baseState, LauncherState targetState, Direction dir) {
-        mLauncher = l;
-        mDetector = new SwipeDetector(l, this, dir);
-        mBaseState = baseState;
-        mTargetState = targetState;
-    }
-
-    private boolean canInterceptTouch(MotionEvent ev) {
-        if (mCurrentAnimation != null) {
-            // If we are already animating from a previous state, we can intercept.
-            return true;
-        }
-        if (AbstractFloatingView.getTopOpenView(mLauncher) != null) {
-            return false;
-        }
-        return shouldInterceptTouch(ev);
-    }
-
-    protected abstract boolean shouldInterceptTouch(MotionEvent ev);
-
-    @Override
-    public void onAnimationCancel(Animator animation) {
-        if (mCurrentAnimation != null && animation == mCurrentAnimation.getTarget()) {
-            Log.e(TAG, "Who dare cancel the animation when I am in control", new Exception());
-            mDetector.finishedScrolling();
-            mCurrentAnimation = null;
-        }
-    }
-
-    @Override
-    public boolean onControllerInterceptTouchEvent(MotionEvent ev) {
-        if (ev.getAction() == MotionEvent.ACTION_DOWN) {
-            mNoIntercept = !canInterceptTouch(ev);
-            if (mNoIntercept) {
-                return false;
-            }
-
-            // Now figure out which direction scroll events the controller will start
-            // calling the callbacks.
-            final int directionsToDetectScroll;
-            boolean ignoreSlopWhenSettling = false;
-
-            if (mCurrentAnimation != null) {
-                if (mCurrentAnimation.getProgressFraction() > 1 - RECATCH_REJECTION_FRACTION) {
-                    directionsToDetectScroll = SwipeDetector.DIRECTION_POSITIVE;
-                } else if (mCurrentAnimation.getProgressFraction() < RECATCH_REJECTION_FRACTION ) {
-                    directionsToDetectScroll = SwipeDetector.DIRECTION_NEGATIVE;
-                } else {
-                    directionsToDetectScroll = SwipeDetector.DIRECTION_BOTH;
-                    ignoreSlopWhenSettling = true;
-                }
-            } else {
-                directionsToDetectScroll = getSwipeDirection(ev);
-            }
-
-            mDetector.setDetectableScrollConditions(
-                    directionsToDetectScroll, ignoreSlopWhenSettling);
-        }
-
-        if (mNoIntercept) {
-            return false;
-        }
-
-        onControllerTouchEvent(ev);
-        return mDetector.isDraggingOrSettling();
-    }
-
-    protected abstract int getSwipeDirection(MotionEvent ev);
-
-    @Override
-    public boolean onControllerTouchEvent(MotionEvent ev) {
-        return mDetector.onTouchEvent(ev);
-    }
-
-    @Override
-    public void onDragStart(boolean start) {
-        if (mCurrentAnimation == null) {
-            float range = getShiftRange();
-            long maxAccuracy = (long) (2 * range);
-
-            // Build current animation
-            mToState = mLauncher.isInState(mTargetState) ? mBaseState : mTargetState;
-            mCurrentAnimation = mLauncher.getStateManager()
-                    .createAnimationToNewWorkspace(mToState, maxAccuracy);
-            mCurrentAnimation.getTarget().addListener(this);
-            mStartProgress = 0;
-            mProgressMultiplier =
-                    (mLauncher.isInState(mTargetState) ^ isTransitionFlipped() ? 1 : -1) / range;
-            mCurrentAnimation.dispatchOnStart();
-        } else {
-            mCurrentAnimation.pause();
-            mStartProgress = mCurrentAnimation.getProgressFraction();
-        }
-    }
-
-    protected boolean isTransitionFlipped() {
-        return false;
-    }
-
-    protected float getShiftRange() {
-        return mLauncher.getAllAppsController().getShiftRange();
-    }
-
-    @Override
-    public boolean onDrag(float displacement, float velocity) {
-        float deltaProgress = mProgressMultiplier * displacement;
-        mCurrentAnimation.setPlayFraction(deltaProgress + mStartProgress);
-        return true;
-    }
-
-    @Override
-    public void onDragEnd(float velocity, boolean fling) {
-        final long animationDuration;
-        final LauncherState targetState;
-        final float progress = mCurrentAnimation.getProgressFraction();
-
-        if (fling) {
-            if (velocity < 0 ^ isTransitionFlipped()) {
-                targetState = mTargetState;
-            } else {
-                targetState = mBaseState;
-            }
-            animationDuration = SwipeDetector.calculateDuration(velocity,
-                    mToState == targetState ? (1 - progress) : progress);
-            // snap to top or bottom using the release velocity
-        } else {
-            if (progress > SUCCESS_TRANSITION_PROGRESS) {
-                targetState = mToState;
-                animationDuration = SwipeDetector.calculateDuration(velocity, 1 - progress);
-            } else {
-                targetState = mToState == mTargetState ? mBaseState : mTargetState;
-                animationDuration = SwipeDetector.calculateDuration(velocity, progress);
-            }
-        }
-
-        mCurrentAnimation.setEndAction(() -> {
-            mLauncher.getStateManager().goToState(targetState, false);
-            onTransitionComplete(fling, targetState == mToState);
-            mDetector.finishedScrolling();
-            mCurrentAnimation = null;
-        });
-
-        float nextFrameProgress = Utilities.boundToRange(
-                progress + velocity * SINGLE_FRAME_MS * mProgressMultiplier, 0f, 1f);
-
-        ValueAnimator anim = mCurrentAnimation.getAnimationPlayer();
-        anim.setFloatValues(nextFrameProgress, targetState == mToState ? 1f : 0f);
-        anim.setDuration(animationDuration);
-        anim.setInterpolator(scrollInterpolatorForVelocity(velocity));
-        anim.start();
-    }
-
-    protected abstract void onTransitionComplete(boolean wasFling, boolean stateChanged);
-}