Using common fling detection logic for notification and all-apps

> Refactoring SwipeDetector to both allow vertical and horizontal swipes
> Using SwipeDetector and common overscroll effect for notification swipes
  instead of a separate logic

Change-Id: Ib706ee179811ade59ddb68184e1c202365d147c4

4 files changed, 67 insertions, 1083 deletions

diff --git a/src/com/android/launcher3/notification/FlingAnimationUtils.java b/src/com/android/launcher3/notification/FlingAnimationUtils.java
deleted file mode 100644
index a1f7e49c0..000000000
--- a/src/com/android/launcher3/notification/FlingAnimationUtils.java
+++ /dev/null
@@ -1,356 +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.notification;
-
-import android.animation.Animator;
-import android.content.Context;
-import android.view.ViewPropertyAnimator;
-import android.view.animation.Interpolator;
-import android.view.animation.PathInterpolator;
-
-/**
- * Utility class to calculate general fling animation when the finger is released.
- *
- * This class was copied from com.android.systemui.statusbar.
- */
-public class FlingAnimationUtils {
-
-    private static final float LINEAR_OUT_SLOW_IN_X2 = 0.35f;
-    private static final float LINEAR_OUT_SLOW_IN_X2_MAX = 0.68f;
-    private static final float LINEAR_OUT_FASTER_IN_X2 = 0.5f;
-    private static final float LINEAR_OUT_FASTER_IN_Y2_MIN = 0.4f;
-    private static final float LINEAR_OUT_FASTER_IN_Y2_MAX = 0.5f;
-    private static final float MIN_VELOCITY_DP_PER_SECOND = 250;
-    private static final float HIGH_VELOCITY_DP_PER_SECOND = 3000;
-
-    private static final float LINEAR_OUT_SLOW_IN_START_GRADIENT = 0.75f;
-    private final float mSpeedUpFactor;
-    private final float mY2;
-
-    private float mMinVelocityPxPerSecond;
-    private float mMaxLengthSeconds;
-    private float mHighVelocityPxPerSecond;
-    private float mLinearOutSlowInX2;
-
-    private AnimatorProperties mAnimatorProperties = new AnimatorProperties();
-    private PathInterpolator mInterpolator;
-    private float mCachedStartGradient = -1;
-    private float mCachedVelocityFactor = -1;
-
-    public FlingAnimationUtils(Context ctx, float maxLengthSeconds) {
-        this(ctx, maxLengthSeconds, 0.0f);
-    }
-
-    /**
-     * @param maxLengthSeconds the longest duration an animation can become in seconds
-     * @param speedUpFactor a factor from 0 to 1 how much the slow down should be shifted towards
-     *                      the end of the animation. 0 means it's at the beginning and no
-     *                      acceleration will take place.
-     */
-    public FlingAnimationUtils(Context ctx, float maxLengthSeconds, float speedUpFactor) {
-        this(ctx, maxLengthSeconds, speedUpFactor, -1.0f, 1.0f);
-    }
-
-    /**
-     * @param maxLengthSeconds the longest duration an animation can become in seconds
-     * @param speedUpFactor a factor from 0 to 1 how much the slow down should be shifted towards
-     *                      the end of the animation. 0 means it's at the beginning and no
-     *                      acceleration will take place.
-     * @param x2 the x value to take for the second point of the bezier spline. If a value below 0
-     *           is provided, the value is automatically calculated.
-     * @param y2 the y value to take for the second point of the bezier spline
-     */
-    public FlingAnimationUtils(Context ctx, float maxLengthSeconds, float speedUpFactor, float x2,
-            float y2) {
-        mMaxLengthSeconds = maxLengthSeconds;
-        mSpeedUpFactor = speedUpFactor;
-        if (x2 < 0) {
-            mLinearOutSlowInX2 = interpolate(LINEAR_OUT_SLOW_IN_X2,
-                    LINEAR_OUT_SLOW_IN_X2_MAX,
-                    mSpeedUpFactor);
-        } else {
-            mLinearOutSlowInX2 = x2;
-        }
-        mY2 = y2;
-
-        mMinVelocityPxPerSecond
-                = MIN_VELOCITY_DP_PER_SECOND * ctx.getResources().getDisplayMetrics().density;
-        mHighVelocityPxPerSecond
-                = HIGH_VELOCITY_DP_PER_SECOND * ctx.getResources().getDisplayMetrics().density;
-    }
-
-    private static float interpolate(float start, float end, float amount) {
-        return start * (1.0f - amount) + end * amount;
-    }
-
-    /**
-     * Applies the interpolator and length to the animator, such that the fling animation is
-     * consistent with the finger motion.
-     *
-     * @param animator the animator to apply
-     * @param currValue the current value
-     * @param endValue the end value of the animator
-     * @param velocity the current velocity of the motion
-     */
-    public void apply(Animator animator, float currValue, float endValue, float velocity) {
-        apply(animator, currValue, endValue, velocity, Math.abs(endValue - currValue));
-    }
-
-    /**
-     * Applies the interpolator and length to the animator, such that the fling animation is
-     * consistent with the finger motion.
-     *
-     * @param animator the animator to apply
-     * @param currValue the current value
-     * @param endValue the end value of the animator
-     * @param velocity the current velocity of the motion
-     */
-    public void apply(ViewPropertyAnimator animator, float currValue, float endValue,
-            float velocity) {
-        apply(animator, currValue, endValue, velocity, Math.abs(endValue - currValue));
-    }
-
-    /**
-     * Applies the interpolator and length to the animator, such that the fling animation is
-     * consistent with the finger motion.
-     *
-     * @param animator the animator to apply
-     * @param currValue the current value
-     * @param endValue the end value of the animator
-     * @param velocity the current velocity of the motion
-     * @param maxDistance the maximum distance for this interaction; the maximum animation length
-     *                    gets multiplied by the ratio between the actual distance and this value
-     */
-    public void apply(Animator animator, float currValue, float endValue, float velocity,
-            float maxDistance) {
-        AnimatorProperties properties = getProperties(currValue, endValue, velocity,
-                maxDistance);
-        animator.setDuration(properties.duration);
-        animator.setInterpolator(properties.interpolator);
-    }
-
-    /**
-     * Applies the interpolator and length to the animator, such that the fling animation is
-     * consistent with the finger motion.
-     *
-     * @param animator the animator to apply
-     * @param currValue the current value
-     * @param endValue the end value of the animator
-     * @param velocity the current velocity of the motion
-     * @param maxDistance the maximum distance for this interaction; the maximum animation length
-     *                    gets multiplied by the ratio between the actual distance and this value
-     */
-    public void apply(ViewPropertyAnimator animator, float currValue, float endValue,
-            float velocity, float maxDistance) {
-        AnimatorProperties properties = getProperties(currValue, endValue, velocity,
-                maxDistance);
-        animator.setDuration(properties.duration);
-        animator.setInterpolator(properties.interpolator);
-    }
-
-    private AnimatorProperties getProperties(float currValue,
-            float endValue, float velocity, float maxDistance) {
-        float maxLengthSeconds = (float) (mMaxLengthSeconds
-                * Math.sqrt(Math.abs(endValue - currValue) / maxDistance));
-        float diff = Math.abs(endValue - currValue);
-        float velAbs = Math.abs(velocity);
-        float velocityFactor = mSpeedUpFactor == 0.0f
-                ? 1.0f : Math.min(velAbs / HIGH_VELOCITY_DP_PER_SECOND, 1.0f);
-        float startGradient = interpolate(LINEAR_OUT_SLOW_IN_START_GRADIENT,
-                mY2 / mLinearOutSlowInX2, velocityFactor);
-        float durationSeconds = startGradient * diff / velAbs;
-        Interpolator slowInInterpolator = getInterpolator(startGradient, velocityFactor);
-        if (durationSeconds <= maxLengthSeconds) {
-            mAnimatorProperties.interpolator = slowInInterpolator;
-        } else if (velAbs >= mMinVelocityPxPerSecond) {
-
-            // Cross fade between fast-out-slow-in and linear interpolator with current velocity.
-            durationSeconds = maxLengthSeconds;
-            VelocityInterpolator velocityInterpolator
-                    = new VelocityInterpolator(durationSeconds, velAbs, diff);
-            InterpolatorInterpolator superInterpolator = new InterpolatorInterpolator(
-                    velocityInterpolator, slowInInterpolator, Interpolators.LINEAR_OUT_SLOW_IN);
-            mAnimatorProperties.interpolator = superInterpolator;
-        } else {
-
-            // Just use a normal interpolator which doesn't take the velocity into account.
-            durationSeconds = maxLengthSeconds;
-            mAnimatorProperties.interpolator = Interpolators.FAST_OUT_SLOW_IN;
-        }
-        mAnimatorProperties.duration = (long) (durationSeconds * 1000);
-        return mAnimatorProperties;
-    }
-
-    private Interpolator getInterpolator(float startGradient, float velocityFactor) {
-        if (startGradient != mCachedStartGradient
-                || velocityFactor != mCachedVelocityFactor) {
-            float speedup = mSpeedUpFactor * (1.0f - velocityFactor);
-            mInterpolator = new PathInterpolator(speedup,
-                    speedup * startGradient,
-                    mLinearOutSlowInX2, mY2);
-            mCachedStartGradient = startGradient;
-            mCachedVelocityFactor = velocityFactor;
-        }
-        return mInterpolator;
-    }
-
-    /**
-     * Applies the interpolator and length to the animator, such that the fling animation is
-     * consistent with the finger motion for the case when the animation is making something
-     * disappear.
-     *
-     * @param animator the animator to apply
-     * @param currValue the current value
-     * @param endValue the end value of the animator
-     * @param velocity the current velocity of the motion
-     * @param maxDistance the maximum distance for this interaction; the maximum animation length
-     *                    gets multiplied by the ratio between the actual distance and this value
-     */
-    public void applyDismissing(Animator animator, float currValue, float endValue,
-            float velocity, float maxDistance) {
-        AnimatorProperties properties = getDismissingProperties(currValue, endValue, velocity,
-                maxDistance);
-        animator.setDuration(properties.duration);
-        animator.setInterpolator(properties.interpolator);
-    }
-
-    /**
-     * Applies the interpolator and length to the animator, such that the fling animation is
-     * consistent with the finger motion for the case when the animation is making something
-     * disappear.
-     *
-     * @param animator the animator to apply
-     * @param currValue the current value
-     * @param endValue the end value of the animator
-     * @param velocity the current velocity of the motion
-     * @param maxDistance the maximum distance for this interaction; the maximum animation length
-     *                    gets multiplied by the ratio between the actual distance and this value
-     */
-    public void applyDismissing(ViewPropertyAnimator animator, float currValue, float endValue,
-            float velocity, float maxDistance) {
-        AnimatorProperties properties = getDismissingProperties(currValue, endValue, velocity,
-                maxDistance);
-        animator.setDuration(properties.duration);
-        animator.setInterpolator(properties.interpolator);
-    }
-
-    private AnimatorProperties getDismissingProperties(float currValue, float endValue,
-            float velocity, float maxDistance) {
-        float maxLengthSeconds = (float) (mMaxLengthSeconds
-                * Math.pow(Math.abs(endValue - currValue) / maxDistance, 0.5f));
-        float diff = Math.abs(endValue - currValue);
-        float velAbs = Math.abs(velocity);
-        float y2 = calculateLinearOutFasterInY2(velAbs);
-
-        float startGradient = y2 / LINEAR_OUT_FASTER_IN_X2;
-        Interpolator mLinearOutFasterIn = new PathInterpolator(0, 0, LINEAR_OUT_FASTER_IN_X2, y2);
-        float durationSeconds = startGradient * diff / velAbs;
-        if (durationSeconds <= maxLengthSeconds) {
-            mAnimatorProperties.interpolator = mLinearOutFasterIn;
-        } else if (velAbs >= mMinVelocityPxPerSecond) {
-
-            // Cross fade between linear-out-faster-in and linear interpolator with current
-            // velocity.
-            durationSeconds = maxLengthSeconds;
-            VelocityInterpolator velocityInterpolator
-                    = new VelocityInterpolator(durationSeconds, velAbs, diff);
-            InterpolatorInterpolator superInterpolator = new InterpolatorInterpolator(
-                    velocityInterpolator, mLinearOutFasterIn, Interpolators.LINEAR_OUT_SLOW_IN);
-            mAnimatorProperties.interpolator = superInterpolator;
-        } else {
-
-            // Just use a normal interpolator which doesn't take the velocity into account.
-            durationSeconds = maxLengthSeconds;
-            mAnimatorProperties.interpolator = Interpolators.FAST_OUT_LINEAR_IN;
-        }
-        mAnimatorProperties.duration = (long) (durationSeconds * 1000);
-        return mAnimatorProperties;
-    }
-
-    /**
-     * Calculates the y2 control point for a linear-out-faster-in path interpolator depending on the
-     * velocity. The faster the velocity, the more "linear" the interpolator gets.
-     *
-     * @param velocity the velocity of the gesture.
-     * @return the y2 control point for a cubic bezier path interpolator
-     */
-    private float calculateLinearOutFasterInY2(float velocity) {
-        float t = (velocity - mMinVelocityPxPerSecond)
-                / (mHighVelocityPxPerSecond - mMinVelocityPxPerSecond);
-        t = Math.max(0, Math.min(1, t));
-        return (1 - t) * LINEAR_OUT_FASTER_IN_Y2_MIN + t * LINEAR_OUT_FASTER_IN_Y2_MAX;
-    }
-
-    /**
-     * @return the minimum velocity a gesture needs to have to be considered a fling
-     */
-    public float getMinVelocityPxPerSecond() {
-        return mMinVelocityPxPerSecond;
-    }
-
-    /**
-     * An interpolator which interpolates two interpolators with an interpolator.
-     */
-    private static final class InterpolatorInterpolator implements Interpolator {
-
-        private Interpolator mInterpolator1;
-        private Interpolator mInterpolator2;
-        private Interpolator mCrossfader;
-
-        InterpolatorInterpolator(Interpolator interpolator1, Interpolator interpolator2,
-                Interpolator crossfader) {
-            mInterpolator1 = interpolator1;
-            mInterpolator2 = interpolator2;
-            mCrossfader = crossfader;
-        }
-
-        @Override
-        public float getInterpolation(float input) {
-            float t = mCrossfader.getInterpolation(input);
-            return (1 - t) * mInterpolator1.getInterpolation(input)
-                    + t * mInterpolator2.getInterpolation(input);
-        }
-    }
-
-    /**
-     * An interpolator which interpolates with a fixed velocity.
-     */
-    private static final class VelocityInterpolator implements Interpolator {
-
-        private float mDurationSeconds;
-        private float mVelocity;
-        private float mDiff;
-
-        private VelocityInterpolator(float durationSeconds, float velocity, float diff) {
-            mDurationSeconds = durationSeconds;
-            mVelocity = velocity;
-            mDiff = diff;
-        }
-
-        @Override
-        public float getInterpolation(float input) {
-            float time = input * mDurationSeconds;
-            return time * mVelocity / mDiff;
-        }
-    }
-
-    private static class AnimatorProperties {
-        Interpolator interpolator;
-        long duration;
-    }
-
-}
diff --git a/src/com/android/launcher3/notification/NotificationItemView.java b/src/com/android/launcher3/notification/NotificationItemView.java
index 11f6aa081..78c64d7da 100644
--- a/src/com/android/launcher3/notification/NotificationItemView.java
+++ b/src/com/android/launcher3/notification/NotificationItemView.java
@@ -37,6 +37,7 @@ import com.android.launcher3.anim.RoundedRectRevealOutlineProvider;
 import com.android.launcher3.graphics.IconPalette;
 import com.android.launcher3.logging.UserEventDispatcher.LogContainerProvider;
 import com.android.launcher3.popup.PopupItemView;
+import com.android.launcher3.touch.SwipeDetector;
 import com.android.launcher3.userevent.nano.LauncherLogProto;
 import com.android.launcher3.util.Themes;
 
@@ -56,7 +57,7 @@ public class NotificationItemView extends PopupItemView implements LogContainerP
     private TextView mHeaderCount;
     private NotificationMainView mMainView;
     private NotificationFooterLayout mFooter;
-    private SwipeHelper mSwipeHelper;
+    private SwipeDetector mSwipeDetector;
     private boolean mAnimatingNextIcon;
     private int mNotificationHeaderTextColor = Notification.COLOR_DEFAULT;
 
@@ -75,12 +76,14 @@ public class NotificationItemView extends PopupItemView implements LogContainerP
     @Override
     protected void onFinishInflate() {
         super.onFinishInflate();
-        mHeaderText = (TextView) findViewById(R.id.notification_text);
-        mHeaderCount = (TextView) findViewById(R.id.notification_count);
-        mMainView = (NotificationMainView) findViewById(R.id.main_view);
-        mFooter = (NotificationFooterLayout) findViewById(R.id.footer);
-        mSwipeHelper = new SwipeHelper(SwipeHelper.X, mMainView, getContext());
-        mSwipeHelper.setDisableHardwareLayers(true);
+        mHeaderText = findViewById(R.id.notification_text);
+        mHeaderCount = findViewById(R.id.notification_count);
+        mMainView = findViewById(R.id.main_view);
+        mFooter = findViewById(R.id.footer);
+
+        mSwipeDetector = new SwipeDetector(getContext(), mMainView, SwipeDetector.HORIZONTAL);
+        mSwipeDetector.setDetectableScrollConditions(SwipeDetector.DIRECTION_BOTH, false);
+        mMainView.setSwipeDetector(mSwipeDetector);
     }
 
     public NotificationMainView getMainView() {
@@ -136,7 +139,8 @@ public class NotificationItemView extends PopupItemView implements LogContainerP
             return false;
         }
         getParent().requestDisallowInterceptTouchEvent(true);
-        return mSwipeHelper.onInterceptTouchEvent(ev);
+        mSwipeDetector.onTouchEvent(ev);
+        return mSwipeDetector.isDraggingOrSettling();
     }
 
     @Override
@@ -145,7 +149,7 @@ public class NotificationItemView extends PopupItemView implements LogContainerP
             // The notification hasn't been populated yet.
             return false;
         }
-        return mSwipeHelper.onTouchEvent(ev) || super.onTouchEvent(ev);
+        return mSwipeDetector.onTouchEvent(ev) || super.onTouchEvent(ev);
     }
 
     public void applyNotificationInfos(final List<NotificationInfo> notificationInfos) {
diff --git a/src/com/android/launcher3/notification/NotificationMainView.java b/src/com/android/launcher3/notification/NotificationMainView.java
index 9b8dd648f..5aff28db4 100644
--- a/src/com/android/launcher3/notification/NotificationMainView.java
+++ b/src/com/android/launcher3/notification/NotificationMainView.java
@@ -23,15 +23,17 @@ import android.graphics.drawable.ColorDrawable;
 import android.graphics.drawable.RippleDrawable;
 import android.text.TextUtils;
 import android.util.AttributeSet;
-import android.view.MotionEvent;
 import android.view.View;
 import android.view.ViewGroup;
+import android.view.ViewPropertyAnimator;
 import android.widget.FrameLayout;
 import android.widget.TextView;
 
 import com.android.launcher3.ItemInfo;
 import com.android.launcher3.Launcher;
 import com.android.launcher3.R;
+import com.android.launcher3.touch.OverScroll;
+import com.android.launcher3.touch.SwipeDetector;
 import com.android.launcher3.userevent.nano.LauncherLogProto;
 import com.android.launcher3.util.Themes;
 
@@ -39,7 +41,7 @@ import com.android.launcher3.util.Themes;
  * A {@link android.widget.FrameLayout} that contains a single notification,
  * e.g. icon + title + text.
  */
-public class NotificationMainView extends FrameLayout implements SwipeHelper.Callback {
+public class NotificationMainView extends FrameLayout implements SwipeDetector.Listener {
 
     private NotificationInfo mNotificationInfo;
     private ViewGroup mTextAndBackground;
@@ -47,6 +49,8 @@ public class NotificationMainView extends FrameLayout implements SwipeHelper.Cal
     private TextView mTitleView;
     private TextView mTextView;
 
+    private SwipeDetector mSwipeDetector;
+
     public NotificationMainView(Context context) {
         this(context, null, 0);
     }
@@ -78,6 +82,10 @@ public class NotificationMainView extends FrameLayout implements SwipeHelper.Cal
         applyNotificationInfo(mainNotification, iconView, false);
     }
 
+    public void setSwipeDetector(SwipeDetector swipeDetector) {
+        mSwipeDetector = swipeDetector;
+    }
+
     /**
      * Sets the content of this view, animating it after a new icon shifts up if necessary.
      */
@@ -113,29 +121,11 @@ public class NotificationMainView extends FrameLayout implements SwipeHelper.Cal
     }
 
 
-    // SwipeHelper.Callback's
-
-    @Override
-    public View getChildAtPosition(MotionEvent ev) {
-        return this;
-    }
-
-    @Override
-    public boolean canChildBeDismissed(View v) {
+    public boolean canChildBeDismissed() {
         return mNotificationInfo != null && mNotificationInfo.dismissable;
     }
 
-    @Override
-    public boolean isAntiFalsingNeeded() {
-        return false;
-    }
-
-    @Override
-    public void onBeginDrag(View v) {
-    }
-
-    @Override
-    public void onChildDismissed(View v) {
+    public void onChildDismissed() {
         Launcher launcher = Launcher.getLauncher(getContext());
         launcher.getPopupDataProvider().cancelNotification(
                 mNotificationInfo.notificationKey);
@@ -145,22 +135,55 @@ public class NotificationMainView extends FrameLayout implements SwipeHelper.Cal
                 LauncherLogProto.ItemType.NOTIFICATION);
     }
 
+    // SwipeDetector.Listener's
     @Override
-    public void onDragCancelled(View v) {
-    }
+    public void onDragStart(boolean start) { }
 
-    @Override
-    public void onChildSnappedBack(View animView, float targetLeft) {
-    }
 
     @Override
-    public boolean updateSwipeProgress(View animView, boolean dismissable, float swipeProgress) {
-        // Don't fade out.
+    public boolean onDrag(float displacement, float velocity) {
+        setTranslationX(canChildBeDismissed()
+                ? displacement : OverScroll.dampedScroll(displacement, getWidth()));
+        animate().cancel();
         return true;
     }
 
     @Override
-    public float getFalsingThresholdFactor() {
-        return 1;
+    public void onDragEnd(float velocity, boolean fling) {
+        final boolean willExit;
+        final float endTranslation;
+
+        if (!canChildBeDismissed()) {
+            willExit = false;
+            endTranslation = 0;
+        } else if (fling) {
+            willExit = true;
+            endTranslation = velocity < 0 ? - getWidth() : getWidth();
+        } else if (Math.abs(getTranslationX()) > getWidth() / 2) {
+            willExit = true;
+            endTranslation = (getTranslationX() < 0 ? -getWidth() : getWidth());
+        } else {
+            willExit = false;
+            endTranslation = 0;
+        }
+
+        SwipeDetector.ScrollInterpolator interpolator = new SwipeDetector.ScrollInterpolator();
+        interpolator.setVelocityAtZero(velocity);
+
+        long duration = SwipeDetector.calculateDuration(velocity,
+                (endTranslation - getTranslationX()) / getWidth());
+        animate()
+                .setDuration(duration)
+                .setInterpolator(interpolator)
+                .translationX(endTranslation)
+                .withEndAction(new Runnable() {
+                    @Override
+                    public void run() {
+                        mSwipeDetector.finishedScrolling();
+                        if (willExit) {
+                            onChildDismissed();
+                        }
+                    }
+                }).start();
     }
 }
diff --git a/src/com/android/launcher3/notification/SwipeHelper.java b/src/com/android/launcher3/notification/SwipeHelper.java
deleted file mode 100644
index ebbe5fc6a..000000000
--- a/src/com/android/launcher3/notification/SwipeHelper.java
+++ /dev/null
@@ -1,687 +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.notification;
-
-import android.animation.Animator;
-import android.animation.AnimatorListenerAdapter;
-import android.animation.ObjectAnimator;
-import android.animation.ValueAnimator;
-import android.animation.ValueAnimator.AnimatorUpdateListener;
-import android.content.Context;
-import android.graphics.RectF;
-import android.os.Handler;
-import android.util.ArrayMap;
-import android.util.Log;
-import android.view.MotionEvent;
-import android.view.VelocityTracker;
-import android.view.View;
-import android.view.ViewConfiguration;
-import android.view.accessibility.AccessibilityEvent;
-import com.android.launcher3.R;
-
-/**
- * This class was copied from com.android.systemui.
- */
-public class SwipeHelper {
-    private static final String TAG = "SwipeHelper";
-    private static final boolean DEBUG_INVALIDATE = false;
-    private static final boolean SLOW_ANIMATIONS = false; // DEBUG;
-    private static final boolean CONSTRAIN_SWIPE = true;
-    private static final boolean FADE_OUT_DURING_SWIPE = true;
-    private static final boolean DISMISS_IF_SWIPED_FAR_ENOUGH = true;
-
-    public static final int X = 0;
-    public static final int Y = 1;
-
-    private static final float SWIPE_ESCAPE_VELOCITY = 100f; // dp/sec
-    private static final int DEFAULT_ESCAPE_ANIMATION_DURATION = 200; // ms
-    private static final int MAX_ESCAPE_ANIMATION_DURATION = 400; // ms
-    private static final int MAX_DISMISS_VELOCITY = 4000; // dp/sec
-    private static final int SNAP_ANIM_LEN = SLOW_ANIMATIONS ? 1000 : 150; // ms
-
-    static final float SWIPE_PROGRESS_FADE_END = 0.5f; // fraction of thumbnail width
-                                                // beyond which swipe progress->0
-    private float mMinSwipeProgress = 0f;
-    private float mMaxSwipeProgress = 1f;
-
-    private final FlingAnimationUtils mFlingAnimationUtils;
-    private float mPagingTouchSlop;
-    private final Callback mCallback;
-    private final Handler mHandler;
-    private final int mSwipeDirection;
-    private final VelocityTracker mVelocityTracker;
-
-    private float mInitialTouchPos;
-    private float mPerpendicularInitialTouchPos;
-    private boolean mDragging;
-    private boolean mSnappingChild;
-    private View mCurrView;
-    private boolean mCanCurrViewBeDimissed;
-    private float mDensityScale;
-    private float mTranslation = 0;
-
-    private boolean mLongPressSent;
-    private LongPressListener mLongPressListener;
-    private Runnable mWatchLongPress;
-    private final long mLongPressTimeout;
-
-    final private int[] mTmpPos = new int[2];
-    private final int mFalsingThreshold;
-    private boolean mTouchAboveFalsingThreshold;
-    private boolean mDisableHwLayers;
-
-    private final ArrayMap<View, Animator> mDismissPendingMap = new ArrayMap<>();
-
-    public SwipeHelper(int swipeDirection, Callback callback, Context context) {
-        mCallback = callback;
-        mHandler = new Handler();
-        mSwipeDirection = swipeDirection;
-        mVelocityTracker = VelocityTracker.obtain();
-        mDensityScale =  context.getResources().getDisplayMetrics().density;
-        mPagingTouchSlop = ViewConfiguration.get(context).getScaledPagingTouchSlop();
-
-        mLongPressTimeout = (long) (ViewConfiguration.getLongPressTimeout() * 1.5f); // extra long-press!
-        mFalsingThreshold = context.getResources().getDimensionPixelSize(
-                R.dimen.swipe_helper_falsing_threshold);
-        mFlingAnimationUtils = new FlingAnimationUtils(context, getMaxEscapeAnimDuration() / 1000f);
-    }
-
-    public void setLongPressListener(LongPressListener listener) {
-        mLongPressListener = listener;
-    }
-
-    public void setDensityScale(float densityScale) {
-        mDensityScale = densityScale;
-    }
-
-    public void setPagingTouchSlop(float pagingTouchSlop) {
-        mPagingTouchSlop = pagingTouchSlop;
-    }
-
-    public void setDisableHardwareLayers(boolean disableHwLayers) {
-        mDisableHwLayers = disableHwLayers;
-    }
-
-    private float getPos(MotionEvent ev) {
-        return mSwipeDirection == X ? ev.getX() : ev.getY();
-    }
-
-    private float getPerpendicularPos(MotionEvent ev) {
-        return mSwipeDirection == X ? ev.getY() : ev.getX();
-    }
-
-    protected float getTranslation(View v) {
-        return mSwipeDirection == X ? v.getTranslationX() : v.getTranslationY();
-    }
-
-    private float getVelocity(VelocityTracker vt) {
-        return mSwipeDirection == X ? vt.getXVelocity() :
-                vt.getYVelocity();
-    }
-
-    protected ObjectAnimator createTranslationAnimation(View v, float newPos) {
-        ObjectAnimator anim = ObjectAnimator.ofFloat(v,
-                mSwipeDirection == X ? View.TRANSLATION_X : View.TRANSLATION_Y, newPos);
-        return anim;
-    }
-
-    private float getPerpendicularVelocity(VelocityTracker vt) {
-        return mSwipeDirection == X ? vt.getYVelocity() :
-                vt.getXVelocity();
-    }
-
-    protected Animator getViewTranslationAnimator(View v, float target,
-            AnimatorUpdateListener listener) {
-        ObjectAnimator anim = createTranslationAnimation(v, target);
-        if (listener != null) {
-            anim.addUpdateListener(listener);
-        }
-        return anim;
-    }
-
-    protected void setTranslation(View v, float translate) {
-        if (v == null) {
-            return;
-        }
-        if (mSwipeDirection == X) {
-            v.setTranslationX(translate);
-        } else {
-            v.setTranslationY(translate);
-        }
-    }
-
-    protected float getSize(View v) {
-        return mSwipeDirection == X ? v.getMeasuredWidth() :
-                v.getMeasuredHeight();
-    }
-
-    public void setMinSwipeProgress(float minSwipeProgress) {
-        mMinSwipeProgress = minSwipeProgress;
-    }
-
-    public void setMaxSwipeProgress(float maxSwipeProgress) {
-        mMaxSwipeProgress = maxSwipeProgress;
-    }
-
-    private float getSwipeProgressForOffset(View view, float translation) {
-        float viewSize = getSize(view);
-        float result = Math.abs(translation / viewSize);
-        return Math.min(Math.max(mMinSwipeProgress, result), mMaxSwipeProgress);
-    }
-
-    private float getSwipeAlpha(float progress) {
-        return Math.min(0, Math.max(1, progress / SWIPE_PROGRESS_FADE_END));
-    }
-
-    private void updateSwipeProgressFromOffset(View animView, boolean dismissable) {
-        updateSwipeProgressFromOffset(animView, dismissable, getTranslation(animView));
-    }
-
-    private void updateSwipeProgressFromOffset(View animView, boolean dismissable,
-            float translation) {
-        float swipeProgress = getSwipeProgressForOffset(animView, translation);
-        if (!mCallback.updateSwipeProgress(animView, dismissable, swipeProgress)) {
-            if (FADE_OUT_DURING_SWIPE && dismissable) {
-                float alpha = swipeProgress;
-                if (!mDisableHwLayers) {
-                    if (alpha != 0f && alpha != 1f) {
-                        animView.setLayerType(View.LAYER_TYPE_HARDWARE, null);
-                    } else {
-                        animView.setLayerType(View.LAYER_TYPE_NONE, null);
-                    }
-                }
-                animView.setAlpha(getSwipeAlpha(swipeProgress));
-            }
-        }
-        invalidateGlobalRegion(animView);
-    }
-
-    // invalidate the view's own bounds all the way up the view hierarchy
-    public static void invalidateGlobalRegion(View view) {
-        invalidateGlobalRegion(
-                view,
-                new RectF(view.getLeft(), view.getTop(), view.getRight(), view.getBottom()));
-    }
-
-    // invalidate a rectangle relative to the view's coordinate system all the way up the view
-    // hierarchy
-    public static void invalidateGlobalRegion(View view, RectF childBounds) {
-        //childBounds.offset(view.getTranslationX(), view.getTranslationY());
-        if (DEBUG_INVALIDATE)
-            Log.v(TAG, "-------------");
-        while (view.getParent() != null && view.getParent() instanceof View) {
-            view = (View) view.getParent();
-            view.getMatrix().mapRect(childBounds);
-            view.invalidate((int) Math.floor(childBounds.left),
-                    (int) Math.floor(childBounds.top),
-                    (int) Math.ceil(childBounds.right),
-                    (int) Math.ceil(childBounds.bottom));
-            if (DEBUG_INVALIDATE) {
-                Log.v(TAG, "INVALIDATE(" + (int) Math.floor(childBounds.left)
-                        + "," + (int) Math.floor(childBounds.top)
-                        + "," + (int) Math.ceil(childBounds.right)
-                        + "," + (int) Math.ceil(childBounds.bottom));
-            }
-        }
-    }
-
-    public void removeLongPressCallback() {
-        if (mWatchLongPress != null) {
-            mHandler.removeCallbacks(mWatchLongPress);
-            mWatchLongPress = null;
-        }
-    }
-
-    public boolean onInterceptTouchEvent(final MotionEvent ev) {
-        final int action = ev.getAction();
-
-        switch (action) {
-            case MotionEvent.ACTION_DOWN:
-                mTouchAboveFalsingThreshold = false;
-                mDragging = false;
-                mSnappingChild = false;
-                mLongPressSent = false;
-                mVelocityTracker.clear();
-                mCurrView = mCallback.getChildAtPosition(ev);
-
-                if (mCurrView != null) {
-                    onDownUpdate(mCurrView);
-                    mCanCurrViewBeDimissed = mCallback.canChildBeDismissed(mCurrView);
-                    mVelocityTracker.addMovement(ev);
-                    mInitialTouchPos = getPos(ev);
-                    mPerpendicularInitialTouchPos = getPerpendicularPos(ev);
-                    mTranslation = getTranslation(mCurrView);
-                    if (mLongPressListener != null) {
-                        if (mWatchLongPress == null) {
-                            mWatchLongPress = new Runnable() {
-                                @Override
-                                public void run() {
-                                    if (mCurrView != null && !mLongPressSent) {
-                                        mLongPressSent = true;
-                                        mCurrView.sendAccessibilityEvent(
-                                                AccessibilityEvent.TYPE_VIEW_LONG_CLICKED);
-                                        mCurrView.getLocationOnScreen(mTmpPos);
-                                        final int x = (int) ev.getRawX() - mTmpPos[0];
-                                        final int y = (int) ev.getRawY() - mTmpPos[1];
-                                        mLongPressListener.onLongPress(mCurrView, x, y);
-                                    }
-                                }
-                            };
-                        }
-                        mHandler.postDelayed(mWatchLongPress, mLongPressTimeout);
-                    }
-                }
-                break;
-
-            case MotionEvent.ACTION_MOVE:
-                if (mCurrView != null && !mLongPressSent) {
-                    mVelocityTracker.addMovement(ev);
-                    float pos = getPos(ev);
-                    float perpendicularPos = getPerpendicularPos(ev);
-                    float delta = pos - mInitialTouchPos;
-                    float deltaPerpendicular = perpendicularPos - mPerpendicularInitialTouchPos;
-                    if (Math.abs(delta) > mPagingTouchSlop
-                            && Math.abs(delta) > Math.abs(deltaPerpendicular)) {
-                        mCallback.onBeginDrag(mCurrView);
-                        mDragging = true;
-                        mInitialTouchPos = getPos(ev);
-                        mTranslation = getTranslation(mCurrView);
-                        removeLongPressCallback();
-                    }
-                }
-                break;
-
-            case MotionEvent.ACTION_UP:
-            case MotionEvent.ACTION_CANCEL:
-                final boolean captured = (mDragging || mLongPressSent);
-                mDragging = false;
-                mCurrView = null;
-                mLongPressSent = false;
-                removeLongPressCallback();
-                if (captured) return true;
-                break;
-        }
-        return mDragging || mLongPressSent;
-    }
-
-    /**
-     * @param view The view to be dismissed
-     * @param velocity The desired pixels/second speed at which the view should move
-     * @param useAccelerateInterpolator Should an accelerating Interpolator be used
-     */
-    public void dismissChild(final View view, float velocity, boolean useAccelerateInterpolator) {
-        dismissChild(view, velocity, null /* endAction */, 0 /* delay */,
-                useAccelerateInterpolator, 0 /* fixedDuration */, false /* isDismissAll */);
-    }
-
-    /**
-     * @param animView The view to be dismissed
-     * @param velocity The desired pixels/second speed at which the view should move
-     * @param endAction The action to perform at the end
-     * @param delay The delay after which we should start
-     * @param useAccelerateInterpolator Should an accelerating Interpolator be used
-     * @param fixedDuration If not 0, this exact duration will be taken
-     */
-    public void dismissChild(final View animView, float velocity, final Runnable endAction,
-            long delay, boolean useAccelerateInterpolator, long fixedDuration,
-            boolean isDismissAll) {
-        final boolean canBeDismissed = mCallback.canChildBeDismissed(animView);
-        float newPos;
-        boolean isLayoutRtl = animView.getLayoutDirection() == View.LAYOUT_DIRECTION_RTL;
-
-        // if we use the Menu to dismiss an item in landscape, animate up
-        boolean animateUpForMenu = velocity == 0 && (getTranslation(animView) == 0 || isDismissAll)
-                && mSwipeDirection == Y;
-        // if the language is rtl we prefer swiping to the left
-        boolean animateLeftForRtl = velocity == 0 && (getTranslation(animView) == 0 || isDismissAll)
-                && isLayoutRtl;
-        boolean animateLeft = velocity < 0
-                || (velocity == 0 && getTranslation(animView) < 0 && !isDismissAll);
-
-        if (animateLeft || animateLeftForRtl || animateUpForMenu) {
-            newPos = -getSize(animView);
-        } else {
-            newPos = getSize(animView);
-        }
-        long duration;
-        if (fixedDuration == 0) {
-            duration = MAX_ESCAPE_ANIMATION_DURATION;
-            if (velocity != 0) {
-                duration = Math.min(duration,
-                        (int) (Math.abs(newPos - getTranslation(animView)) * 1000f / Math
-                                .abs(velocity))
-                );
-            } else {
-                duration = DEFAULT_ESCAPE_ANIMATION_DURATION;
-            }
-        } else {
-            duration = fixedDuration;
-        }
-
-        if (!mDisableHwLayers) {
-            animView.setLayerType(View.LAYER_TYPE_HARDWARE, null);
-        }
-        AnimatorUpdateListener updateListener = new AnimatorUpdateListener() {
-            public void onAnimationUpdate(ValueAnimator animation) {
-                onTranslationUpdate(animView, (float) animation.getAnimatedValue(), canBeDismissed);
-            }
-        };
-
-        Animator anim = getViewTranslationAnimator(animView, newPos, updateListener);
-        if (anim == null) {
-            return;
-        }
-        if (useAccelerateInterpolator) {
-            anim.setInterpolator(Interpolators.FAST_OUT_LINEAR_IN);
-            anim.setDuration(duration);
-        } else {
-            mFlingAnimationUtils.applyDismissing(anim, getTranslation(animView),
-                    newPos, velocity, getSize(animView));
-        }
-        if (delay > 0) {
-            anim.setStartDelay(delay);
-        }
-        anim.addListener(new AnimatorListenerAdapter() {
-            private boolean mCancelled;
-
-            public void onAnimationCancel(Animator animation) {
-                mCancelled = true;
-            }
-
-            public void onAnimationEnd(Animator animation) {
-                updateSwipeProgressFromOffset(animView, canBeDismissed);
-                mDismissPendingMap.remove(animView);
-                if (!mCancelled) {
-                    mCallback.onChildDismissed(animView);
-                }
-                if (endAction != null) {
-                    endAction.run();
-                }
-                if (!mDisableHwLayers) {
-                    animView.setLayerType(View.LAYER_TYPE_NONE, null);
-                }
-            }
-        });
-
-        prepareDismissAnimation(animView, anim);
-        mDismissPendingMap.put(animView, anim);
-        anim.start();
-    }
-
-    /**
-     * Called to update the dismiss animation.
-     */
-    protected void prepareDismissAnimation(View view, Animator anim) {
-        // Do nothing
-    }
-
-    public void snapChild(final View animView, final float targetLeft, float velocity) {
-        final boolean canBeDismissed = mCallback.canChildBeDismissed(animView);
-        AnimatorUpdateListener updateListener = new AnimatorUpdateListener() {
-            public void onAnimationUpdate(ValueAnimator animation) {
-                onTranslationUpdate(animView, (float) animation.getAnimatedValue(), canBeDismissed);
-            }
-        };
-
-        Animator anim = getViewTranslationAnimator(animView, targetLeft, updateListener);
-        if (anim == null) {
-            return;
-        }
-        int duration = SNAP_ANIM_LEN;
-        anim.setDuration(duration);
-        anim.addListener(new AnimatorListenerAdapter() {
-            public void onAnimationEnd(Animator animator) {
-                mSnappingChild = false;
-                updateSwipeProgressFromOffset(animView, canBeDismissed);
-                mCallback.onChildSnappedBack(animView, targetLeft);
-            }
-        });
-        prepareSnapBackAnimation(animView, anim);
-        mSnappingChild = true;
-        anim.start();
-    }
-
-    /**
-     * Called to update the snap back animation.
-     */
-    protected void prepareSnapBackAnimation(View view, Animator anim) {
-        // Do nothing
-    }
-
-    /**
-     * Called when there's a down event.
-     */
-    public void onDownUpdate(View currView) {
-        // Do nothing
-    }
-
-    /**
-     * Called on a move event.
-     */
-    protected void onMoveUpdate(View view, float totalTranslation, float delta) {
-        // Do nothing
-    }
-
-    /**
-     * Called in {@link AnimatorUpdateListener#onAnimationUpdate(ValueAnimator)} when the current
-     * view is being animated to dismiss or snap.
-     */
-    public void onTranslationUpdate(View animView, float value, boolean canBeDismissed) {
-        updateSwipeProgressFromOffset(animView, canBeDismissed, value);
-    }
-
-    private void snapChildInstantly(final View view) {
-        final boolean canAnimViewBeDismissed = mCallback.canChildBeDismissed(view);
-        setTranslation(view, 0);
-        updateSwipeProgressFromOffset(view, canAnimViewBeDismissed);
-    }
-
-    /**
-     * Called when a view is updated to be non-dismissable, if the view was being dismissed before
-     * the update this will handle snapping it back into place.
-     *
-     * @param view the view to snap if necessary.
-     * @param animate whether to animate the snap or not.
-     * @param targetLeft the target to snap to.
-     */
-    public void snapChildIfNeeded(final View view, boolean animate, float targetLeft) {
-        if ((mDragging && mCurrView == view) || mSnappingChild) {
-            return;
-        }
-        boolean needToSnap = false;
-        Animator dismissPendingAnim = mDismissPendingMap.get(view);
-        if (dismissPendingAnim != null) {
-            needToSnap = true;
-            dismissPendingAnim.cancel();
-        } else if (getTranslation(view) != 0) {
-            needToSnap = true;
-        }
-        if (needToSnap) {
-            if (animate) {
-                snapChild(view, targetLeft, 0.0f /* velocity */);
-            } else {
-                snapChildInstantly(view);
-            }
-        }
-    }
-
-    public boolean onTouchEvent(MotionEvent ev) {
-        if (mLongPressSent) {
-            return true;
-        }
-
-        if (!mDragging) {
-            if (mCallback.getChildAtPosition(ev) != null) {
-
-                // We are dragging directly over a card, make sure that we also catch the gesture
-                // even if nobody else wants the touch event.
-                onInterceptTouchEvent(ev);
-                 return true;
-            } else {
-
-                // We are not doing anything, make sure the long press callback
-                // is not still ticking like a bomb waiting to go off.
-                removeLongPressCallback();
-                return false;
-            }
-        }
-
-        mVelocityTracker.addMovement(ev);
-        final int action = ev.getAction();
-        switch (action) {
-            case MotionEvent.ACTION_OUTSIDE:
-            case MotionEvent.ACTION_MOVE:
-                if (mCurrView != null) {
-                    float delta = getPos(ev) - mInitialTouchPos;
-                    float absDelta = Math.abs(delta);
-                    if (absDelta >= getFalsingThreshold()) {
-                        mTouchAboveFalsingThreshold = true;
-                    }
-                    // don't let items that can't be dismissed be dragged more than
-                    // maxScrollDistance
-                    if (CONSTRAIN_SWIPE && !mCallback.canChildBeDismissed(mCurrView)) {
-                        float size = getSize(mCurrView);
-                        float maxScrollDistance = 0.25f * size;
-                        if (absDelta >= size) {
-                            delta = delta > 0 ? maxScrollDistance : -maxScrollDistance;
-                        } else {
-                            delta = maxScrollDistance * (float) Math.sin((delta/size)*(Math.PI/2));
-                        }
-                    }
-
-                    setTranslation(mCurrView, mTranslation + delta);
-                    updateSwipeProgressFromOffset(mCurrView, mCanCurrViewBeDimissed);
-                    onMoveUpdate(mCurrView, mTranslation + delta, delta);
-                }
-                break;
-            case MotionEvent.ACTION_UP:
-            case MotionEvent.ACTION_CANCEL:
-                if (mCurrView == null) {
-                    break;
-                }
-                mVelocityTracker.computeCurrentVelocity(1000 /* px/sec */, getMaxVelocity());
-                float velocity = getVelocity(mVelocityTracker);
-
-                if (!handleUpEvent(ev, mCurrView, velocity, getTranslation(mCurrView))) {
-                    if (isDismissGesture(ev)) {
-                        // flingadingy
-                        dismissChild(mCurrView, velocity,
-                                !swipedFastEnough() /* useAccelerateInterpolator */);
-                    } else {
-                        // snappity
-                        mCallback.onDragCancelled(mCurrView);
-                        snapChild(mCurrView, 0 /* leftTarget */, velocity);
-                    }
-                    mCurrView = null;
-                }
-                mDragging = false;
-                break;
-        }
-        return true;
-    }
-
-    private int getFalsingThreshold() {
-        float factor = mCallback.getFalsingThresholdFactor();
-        return (int) (mFalsingThreshold * factor);
-    }
-
-    private float getMaxVelocity() {
-        return MAX_DISMISS_VELOCITY * mDensityScale;
-    }
-
-    protected float getEscapeVelocity() {
-        return getUnscaledEscapeVelocity() * mDensityScale;
-    }
-
-    protected float getUnscaledEscapeVelocity() {
-        return SWIPE_ESCAPE_VELOCITY;
-    }
-
-    protected long getMaxEscapeAnimDuration() {
-        return MAX_ESCAPE_ANIMATION_DURATION;
-    }
-
-    protected boolean swipedFarEnough() {
-        float translation = getTranslation(mCurrView);
-        return DISMISS_IF_SWIPED_FAR_ENOUGH && Math.abs(translation) > 0.4 * getSize(mCurrView);
-    }
-
-    protected boolean isDismissGesture(MotionEvent ev) {
-        boolean falsingDetected = mCallback.isAntiFalsingNeeded() && !mTouchAboveFalsingThreshold;
-        return !falsingDetected && (swipedFastEnough() || swipedFarEnough())
-                && ev.getActionMasked() == MotionEvent.ACTION_UP
-                && mCallback.canChildBeDismissed(mCurrView);
-    }
-
-    protected boolean swipedFastEnough() {
-        float velocity = getVelocity(mVelocityTracker);
-        float translation = getTranslation(mCurrView);
-        boolean ret = (Math.abs(velocity) > getEscapeVelocity())
-                && (velocity > 0) == (translation > 0);
-        return ret;
-    }
-
-    protected boolean handleUpEvent(MotionEvent ev, View animView, float velocity,
-            float translation) {
-        return false;
-    }
-
-    public interface Callback {
-        View getChildAtPosition(MotionEvent ev);
-
-        boolean canChildBeDismissed(View v);
-
-        boolean isAntiFalsingNeeded();
-
-        void onBeginDrag(View v);
-
-        void onChildDismissed(View v);
-
-        void onDragCancelled(View v);
-
-        /**
-         * Called when the child is snapped to a position.
-         *
-         * @param animView the view that was snapped.
-         * @param targetLeft the left position the view was snapped to.
-         */
-        void onChildSnappedBack(View animView, float targetLeft);
-
-        /**
-         * Updates the swipe progress on a child.
-         *
-         * @return if true, prevents the default alpha fading.
-         */
-        boolean updateSwipeProgress(View animView, boolean dismissable, float swipeProgress);
-
-        /**
-         * @return The factor the falsing threshold should be multiplied with
-         */
-        float getFalsingThresholdFactor();
-    }
-
-    /**
-     * Equivalent to View.OnLongClickListener with coordinates
-     */
-    public interface LongPressListener {
-        /**
-         * Equivalent to {@link View.OnLongClickListener#onLongClick(View)} with coordinates
-         * @return whether the longpress was handled
-         */
-        boolean onLongPress(View v, int x, int y);
-    }
-}
\ No newline at end of file