packages/SystemUI/src/com/android/systemui/statusbar/ExpandableNotificationRow.java

/*
 * Copyright (C) 2013 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.systemui.statusbar;

import static com.android.systemui.statusbar.notification.NotificationInflater.InflationCallback;

import android.animation.Animator;
import android.animation.AnimatorListenerAdapter;
import android.animation.ObjectAnimator;
import android.animation.ValueAnimator.AnimatorUpdateListener;
import android.annotation.Nullable;
import android.content.Context;
import android.content.res.Resources;
import android.content.res.Configuration;
import android.graphics.drawable.AnimatedVectorDrawable;
import android.graphics.drawable.AnimationDrawable;
import android.graphics.drawable.ColorDrawable;
import android.graphics.drawable.Drawable;
import android.os.Build;
import android.os.Bundle;
import android.service.notification.StatusBarNotification;
import android.util.AttributeSet;
import android.util.FloatProperty;
import android.util.Property;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.NotificationHeaderView;
import android.view.View;
import android.view.ViewGroup;
import android.view.ViewStub;
import android.view.accessibility.AccessibilityEvent;
import android.view.accessibility.AccessibilityNodeInfo;
import android.widget.Chronometer;
import android.widget.FrameLayout;
import android.widget.ImageView;
import android.widget.RemoteViews;

import com.android.internal.annotations.VisibleForTesting;
import com.android.internal.logging.MetricsLogger;
import com.android.internal.logging.nano.MetricsProto.MetricsEvent;
import com.android.internal.util.NotificationColorUtil;
import com.android.internal.widget.CachingIconView;
import com.android.systemui.Dependency;
import com.android.systemui.Interpolators;
import com.android.systemui.R;
import com.android.systemui.classifier.FalsingManager;
import com.android.systemui.plugins.PluginListener;
import com.android.systemui.plugins.PluginManager;
import com.android.systemui.plugins.statusbar.NotificationMenuRowPlugin;
import com.android.systemui.plugins.statusbar.NotificationMenuRowPlugin.MenuItem;
import com.android.systemui.statusbar.NotificationGuts.GutsContent;
import com.android.systemui.statusbar.notification.HybridNotificationView;
import com.android.systemui.statusbar.notification.NotificationInflater;
import com.android.systemui.statusbar.notification.NotificationUtils;
import com.android.systemui.statusbar.notification.VisualStabilityManager;
import com.android.systemui.statusbar.phone.NotificationGroupManager;
import com.android.systemui.statusbar.phone.StatusBar;
import com.android.systemui.statusbar.policy.HeadsUpManager;
import com.android.systemui.statusbar.stack.AnimationProperties;
import com.android.systemui.statusbar.stack.ExpandableViewState;
import com.android.systemui.statusbar.stack.NotificationChildrenContainer;
import com.android.systemui.statusbar.stack.NotificationStackScrollLayout;
import com.android.systemui.statusbar.stack.StackScrollState;

import java.util.ArrayList;
import java.util.List;

public class ExpandableNotificationRow extends ActivatableNotificationView
        implements PluginListener<NotificationMenuRowPlugin> {

    private static final int DEFAULT_DIVIDER_ALPHA = 0x29;
    private static final int COLORED_DIVIDER_ALPHA = 0x7B;
    private static final int MENU_VIEW_INDEX = 0;

    public interface LayoutListener {
        public void onLayout();
    }

    private LayoutListener mLayoutListener;
    private boolean mLowPriorityStateUpdated;
    private final NotificationInflater mNotificationInflater;
    private int mIconTransformContentShift;
    private int mIconTransformContentShiftNoIcon;
    private int mNotificationMinHeightLegacy;
    private int mMaxHeadsUpHeightLegacy;
    private int mMaxHeadsUpHeight;
    private int mMaxHeadsUpHeightIncreased;
    private int mNotificationMinHeight;
    private int mNotificationMinHeightLarge;
    private int mNotificationMaxHeight;
    private int mNotificationAmbientHeight;
    private int mIncreasedPaddingBetweenElements;

    /** Does this row contain layouts that can adapt to row expansion */
    private boolean mExpandable;
    /** Has the user actively changed the expansion state of this row */
    private boolean mHasUserChangedExpansion;
    /** If {@link #mHasUserChangedExpansion}, has the user expanded this row */
    private boolean mUserExpanded;

    /**
     * Has this notification been expanded while it was pinned
     */
    private boolean mExpandedWhenPinned;
    /** Is the user touching this row */
    private boolean mUserLocked;
    /** Are we showing the "public" version */
    private boolean mShowingPublic;
    private boolean mSensitive;
    private boolean mSensitiveHiddenInGeneral;
    private boolean mShowingPublicInitialized;
    private boolean mHideSensitiveForIntrinsicHeight;

    /**
     * Is this notification expanded by the system. The expansion state can be overridden by the
     * user expansion.
     */
    private boolean mIsSystemExpanded;

    /**
     * Whether the notification is on the keyguard and the expansion is disabled.
     */
    private boolean mOnKeyguard;

    private Animator mTranslateAnim;
    private ArrayList<View> mTranslateableViews;
    private NotificationContentView mPublicLayout;
    private NotificationContentView mPrivateLayout;
    private NotificationContentView[] mLayouts;
    private int mMaxExpandHeight;
    private int mHeadsUpHeight;
    private int mNotificationColor;
    private ExpansionLogger mLogger;
    private String mLoggingKey;
    private NotificationGuts mGuts;
    private NotificationData.Entry mEntry;
    private StatusBarNotification mStatusBarNotification;
    private String mAppName;
    private boolean mIsHeadsUp;
    private boolean mLastChronometerRunning = true;
    private ViewStub mChildrenContainerStub;
    private NotificationGroupManager mGroupManager;
    private boolean mChildrenExpanded;
    private boolean mIsSummaryWithChildren;
    private NotificationChildrenContainer mChildrenContainer;
    private NotificationMenuRowPlugin mMenuRow;
    private ViewStub mGutsStub;
    private boolean mIsSystemChildExpanded;
    private boolean mIsPinned;
    private FalsingManager mFalsingManager;
    private HeadsUpManager mHeadsUpManager;

    private boolean mJustClicked;
    private boolean mIconAnimationRunning;
    private boolean mShowNoBackground;
    private ExpandableNotificationRow mNotificationParent;
    private OnExpandClickListener mOnExpandClickListener;
    private boolean mGroupExpansionChanging;

    /**
     * Whether or not a notification that is not part of a group of notifications can be manually
     * expanded by the user.
     */
    private boolean mEnableNonGroupedNotificationExpand;

    /**
     * Whether or not to update the background of the header of the notification when its expanded.
     * If {@code true}, the header background will disappear when expanded.
     */
    private boolean mShowGroupBackgroundWhenExpanded;

    private OnClickListener mExpandClickListener = new OnClickListener() {
        @Override
        public void onClick(View v) {
            if (!mShowingPublic && (!mIsLowPriority || isExpanded())
                    && mGroupManager.isSummaryOfGroup(mStatusBarNotification)) {
                mGroupExpansionChanging = true;
                final boolean wasExpanded = mGroupManager.isGroupExpanded(mStatusBarNotification);
                boolean nowExpanded = mGroupManager.toggleGroupExpansion(mStatusBarNotification);
                mOnExpandClickListener.onExpandClicked(mEntry, nowExpanded);
                MetricsLogger.action(mContext, MetricsEvent.ACTION_NOTIFICATION_GROUP_EXPANDER,
                        nowExpanded);
                onExpansionChanged(true /* userAction */, wasExpanded);
            } else if (mEnableNonGroupedNotificationExpand) {
                if (v.isAccessibilityFocused()) {
                    mPrivateLayout.setFocusOnVisibilityChange();
                }
                boolean nowExpanded;
                if (isPinned()) {
                    nowExpanded = !mExpandedWhenPinned;
                    mExpandedWhenPinned = nowExpanded;
                } else {
                    nowExpanded = !isExpanded();
                    setUserExpanded(nowExpanded);
                }
                notifyHeightChanged(true);
                mOnExpandClickListener.onExpandClicked(mEntry, nowExpanded);
                MetricsLogger.action(mContext, MetricsEvent.ACTION_NOTIFICATION_EXPANDER,
                        nowExpanded);
            }
        }
    };
    private boolean mForceUnlocked;
    private boolean mDismissed;
    private boolean mKeepInParent;
    private boolean mRemoved;
    private static final Property<ExpandableNotificationRow, Float> TRANSLATE_CONTENT =
            new FloatProperty<ExpandableNotificationRow>("translate") {
                @Override
                public void setValue(ExpandableNotificationRow object, float value) {
                    object.setTranslation(value);
                }

                @Override
                public Float get(ExpandableNotificationRow object) {
                    return object.getTranslation();
                }
    };
    private OnClickListener mOnClickListener;
    private boolean mHeadsupDisappearRunning;
    private View mChildAfterViewWhenDismissed;
    private View mGroupParentWhenDismissed;
    private boolean mRefocusOnDismiss;
    private float mContentTransformationAmount;
    private boolean mIconsVisible = true;
    private boolean mAboveShelf;
    private boolean mShowAmbient;
    private boolean mIsLastChild;
    private Runnable mOnDismissRunnable;
    private boolean mIsLowPriority;
    private boolean mIsColorized;
    private boolean mUseIncreasedCollapsedHeight;
    private boolean mUseIncreasedHeadsUpHeight;
    private float mTranslationWhenRemoved;
    private boolean mWasChildInGroupWhenRemoved;
    private int mNotificationColorAmbient;

    @Override
    public boolean isGroupExpansionChanging() {
        if (isChildInGroup()) {
            return mNotificationParent.isGroupExpansionChanging();
        }
        return mGroupExpansionChanging;
    }

    public void setGroupExpansionChanging(boolean changing) {
        mGroupExpansionChanging = changing;
    }

    @Override
    public void setActualHeightAnimating(boolean animating) {
        if (mPrivateLayout != null) {
            mPrivateLayout.setContentHeightAnimating(animating);
        }
    }

    public NotificationContentView getPrivateLayout() {
        return mPrivateLayout;
    }

    public NotificationContentView getPublicLayout() {
        return mPublicLayout;
    }

    public void setIconAnimationRunning(boolean running) {
        for (NotificationContentView l : mLayouts) {
            setIconAnimationRunning(running, l);
        }
        if (mIsSummaryWithChildren) {
            setIconAnimationRunningForChild(running, mChildrenContainer.getHeaderView());
            setIconAnimationRunningForChild(running, mChildrenContainer.getLowPriorityHeaderView());
            List<ExpandableNotificationRow> notificationChildren =
                    mChildrenContainer.getNotificationChildren();
            for (int i = 0; i < notificationChildren.size(); i++) {
                ExpandableNotificationRow child = notificationChildren.get(i);
                child.setIconAnimationRunning(running);
            }
        }
        mIconAnimationRunning = running;
    }

    private void setIconAnimationRunning(boolean running, NotificationContentView layout) {
        if (layout != null) {
            View contractedChild = layout.getContractedChild();
            View expandedChild = layout.getExpandedChild();
            View headsUpChild = layout.getHeadsUpChild();
            setIconAnimationRunningForChild(running, contractedChild);
            setIconAnimationRunningForChild(running, expandedChild);
            setIconAnimationRunningForChild(running, headsUpChild);
        }
    }

    private void setIconAnimationRunningForChild(boolean running, View child) {
        if (child != null) {
            ImageView icon = (ImageView) child.findViewById(com.android.internal.R.id.icon);
            setIconRunning(icon, running);
            ImageView rightIcon = (ImageView) child.findViewById(
                    com.android.internal.R.id.right_icon);
            setIconRunning(rightIcon, running);
        }
    }

    private void setIconRunning(ImageView imageView, boolean running) {
        if (imageView != null) {
            Drawable drawable = imageView.getDrawable();
            if (drawable instanceof AnimationDrawable) {
                AnimationDrawable animationDrawable = (AnimationDrawable) drawable;
                if (running) {
                    animationDrawable.start();
                } else {
                    animationDrawable.stop();
                }
            } else if (drawable instanceof AnimatedVectorDrawable) {
                AnimatedVectorDrawable animationDrawable = (AnimatedVectorDrawable) drawable;
                if (running) {
                    animationDrawable.start();
                } else {
                    animationDrawable.stop();
                }
            }
        }
    }

    public void updateNotification(NotificationData.Entry entry) {
        mEntry = entry;
        mStatusBarNotification = entry.notification;
        mNotificationInflater.inflateNotificationViews();
    }

    public void onNotificationUpdated() {
        for (NotificationContentView l : mLayouts) {
            l.onNotificationUpdated(mEntry);
        }
        mIsColorized = mStatusBarNotification.getNotification().isColorized();
        mShowingPublicInitialized = false;
        updateNotificationColor();
        if (mMenuRow != null) {
            mMenuRow.onNotificationUpdated(mStatusBarNotification);
        }
        if (mIsSummaryWithChildren) {
            mChildrenContainer.recreateNotificationHeader(mExpandClickListener);
            mChildrenContainer.onNotificationUpdated();
        }
        if (mIconAnimationRunning) {
            setIconAnimationRunning(true);
        }
        if (mNotificationParent != null) {
            mNotificationParent.updateChildrenHeaderAppearance();
        }
        onChildrenCountChanged();
        // The public layouts expand button is always visible
        mPublicLayout.updateExpandButtons(true);
        updateLimits();
        updateIconVisibilities();
        updateShelfIconColor();
    }

    @VisibleForTesting
    void updateShelfIconColor() {
        StatusBarIconView expandedIcon = mEntry.expandedIcon;
        boolean isPreL = Boolean.TRUE.equals(expandedIcon.getTag(R.id.icon_is_pre_L));
        boolean colorize = !isPreL || NotificationUtils.isGrayscale(expandedIcon,
                NotificationColorUtil.getInstance(mContext));
        int color = StatusBarIconView.NO_COLOR;
        if (colorize) {
            NotificationHeaderView header = getVisibleNotificationHeader();
            if (header != null) {
                color = header.getOriginalIconColor();
            } else {
                color = mEntry.getContrastedColor(mContext, mIsLowPriority && !isExpanded(),
                        getBackgroundColorWithoutTint());
            }
        }
        expandedIcon.setStaticDrawableColor(color);
    }

    @Override
    public boolean isDimmable() {
        if (!getShowingLayout().isDimmable()) {
            return false;
        }
        return super.isDimmable();
    }

    private void updateLimits() {
        for (NotificationContentView l : mLayouts) {
            updateLimitsForView(l);
        }
    }

    private void updateLimitsForView(NotificationContentView layout) {
        boolean customView = layout.getContractedChild().getId()
                != com.android.internal.R.id.status_bar_latest_event_content;
        boolean beforeN = mEntry.targetSdk < Build.VERSION_CODES.N;
        int minHeight;
        if (customView && beforeN && !mIsSummaryWithChildren) {
            minHeight = mNotificationMinHeightLegacy;
        } else if (mUseIncreasedCollapsedHeight && layout == mPrivateLayout) {
            minHeight = mNotificationMinHeightLarge;
        } else {
            minHeight = mNotificationMinHeight;
        }
        boolean headsUpCustom = layout.getHeadsUpChild() != null &&
                layout.getHeadsUpChild().getId()
                        != com.android.internal.R.id.status_bar_latest_event_content;
        int headsUpheight;
        if (headsUpCustom && beforeN) {
            headsUpheight = mMaxHeadsUpHeightLegacy;
        } else if (mUseIncreasedHeadsUpHeight && layout == mPrivateLayout) {
            headsUpheight = mMaxHeadsUpHeightIncreased;
        } else {
            headsUpheight = mMaxHeadsUpHeight;
        }
        layout.setHeights(minHeight, headsUpheight, mNotificationMaxHeight,
                mNotificationAmbientHeight);
    }

    public StatusBarNotification getStatusBarNotification() {
        return mStatusBarNotification;
    }

    public NotificationData.Entry getEntry() {
        return mEntry;
    }

    public boolean isHeadsUp() {
        return mIsHeadsUp;
    }

    public void setHeadsUp(boolean isHeadsUp) {
        int intrinsicBefore = getIntrinsicHeight();
        mIsHeadsUp = isHeadsUp;
        mPrivateLayout.setHeadsUp(isHeadsUp);
        if (mIsSummaryWithChildren) {
            // The overflow might change since we allow more lines as HUN.
            mChildrenContainer.updateGroupOverflow();
        }
        if (intrinsicBefore != getIntrinsicHeight()) {
            notifyHeightChanged(false  /* needsAnimation */);
        }
        if (isHeadsUp) {
            setAboveShelf(true);
        }
    }

    public void setGroupManager(NotificationGroupManager groupManager) {
        mGroupManager = groupManager;
        mPrivateLayout.setGroupManager(groupManager);
    }

    public void setRemoteInputController(RemoteInputController r) {
        mPrivateLayout.setRemoteInputController(r);
    }

    public void setAppName(String appName) {
        mAppName = appName;
        if (mMenuRow != null && mMenuRow.getMenuView() != null) {
            mMenuRow.setAppName(mAppName);
        }
    }

    public void addChildNotification(ExpandableNotificationRow row) {
        addChildNotification(row, -1);
    }

    /**
     * Add a child notification to this view.
     *
     * @param row the row to add
     * @param childIndex the index to add it at, if -1 it will be added at the end
     */
    public void addChildNotification(ExpandableNotificationRow row, int childIndex) {
        if (mChildrenContainer == null) {
            mChildrenContainerStub.inflate();
        }
        mChildrenContainer.addNotification(row, childIndex);
        onChildrenCountChanged();
        row.setIsChildInGroup(true, this);
    }

    public void removeChildNotification(ExpandableNotificationRow row) {
        if (mChildrenContainer != null) {
            mChildrenContainer.removeNotification(row);
        }
        onChildrenCountChanged();
        row.setIsChildInGroup(false, null);
    }

    @Override
    public boolean isChildInGroup() {
        return mNotificationParent != null;
    }

    public ExpandableNotificationRow getNotificationParent() {
        return mNotificationParent;
    }

    /**
     * @param isChildInGroup Is this notification now in a group
     * @param parent the new parent notification
     */
    public void setIsChildInGroup(boolean isChildInGroup, ExpandableNotificationRow parent) {;
        boolean childInGroup = StatusBar.ENABLE_CHILD_NOTIFICATIONS && isChildInGroup;
        mNotificationParent = childInGroup ? parent : null;
        mPrivateLayout.setIsChildInGroup(childInGroup);
        mNotificationInflater.setIsChildInGroup(childInGroup);
        resetBackgroundAlpha();
        updateBackgroundForGroupState();
        updateClickAndFocus();
        if (mNotificationParent != null) {
            setOverrideTintColor(NO_COLOR, 0.0f);
            mNotificationParent.updateBackgroundForGroupState();
        }
        updateIconVisibilities();
    }

    @Override
    public boolean onTouchEvent(MotionEvent event) {
        if (event.getActionMasked() != MotionEvent.ACTION_DOWN
                || !isChildInGroup() || isGroupExpanded()) {
            return super.onTouchEvent(event);
        } else {
            return false;
        }
    }

    @Override
    protected boolean handleSlideBack() {
        if (mMenuRow != null && mMenuRow.isMenuVisible()) {
            animateTranslateNotification(0 /* targetLeft */);
            return true;
        }
        return false;
    }

    @Override
    protected boolean shouldHideBackground() {
        return super.shouldHideBackground() || mShowNoBackground;
    }

    @Override
    public boolean isSummaryWithChildren() {
        return mIsSummaryWithChildren;
    }

    @Override
    public boolean areChildrenExpanded() {
        return mChildrenExpanded;
    }

    public List<ExpandableNotificationRow> getNotificationChildren() {
        return mChildrenContainer == null ? null : mChildrenContainer.getNotificationChildren();
    }

    public int getNumberOfNotificationChildren() {
        if (mChildrenContainer == null) {
            return 0;
        }
        return mChildrenContainer.getNotificationChildren().size();
    }

    /**
     * Apply the order given in the list to the children.
     *
     * @param childOrder the new list order
     * @param visualStabilityManager
     * @param callback the callback to invoked in case it is not allowed
     * @return whether the list order has changed
     */
    public boolean applyChildOrder(List<ExpandableNotificationRow> childOrder,
            VisualStabilityManager visualStabilityManager,
            VisualStabilityManager.Callback callback) {
        return mChildrenContainer != null && mChildrenContainer.applyChildOrder(childOrder,
                visualStabilityManager, callback);
    }

    public void getChildrenStates(StackScrollState resultState) {
        if (mIsSummaryWithChildren) {
            ExpandableViewState parentState = resultState.getViewStateForView(this);
            mChildrenContainer.getState(resultState, parentState);
        }
    }

    public void applyChildrenState(StackScrollState state) {
        if (mIsSummaryWithChildren) {
            mChildrenContainer.applyState(state);
        }
    }

    public void prepareExpansionChanged(StackScrollState state) {
        if (mIsSummaryWithChildren) {
            mChildrenContainer.prepareExpansionChanged(state);
        }
    }

    public void startChildAnimation(StackScrollState finalState, AnimationProperties properties) {
        if (mIsSummaryWithChildren) {
            mChildrenContainer.startAnimationToState(finalState, properties);
        }
    }

    public ExpandableNotificationRow getViewAtPosition(float y) {
        if (!mIsSummaryWithChildren || !mChildrenExpanded) {
            return this;
        } else {
            ExpandableNotificationRow view = mChildrenContainer.getViewAtPosition(y);
            return view == null ? this : view;
        }
    }

    public NotificationGuts getGuts() {
        return mGuts;
    }

    /**
     * Set this notification to be pinned to the top if {@link #isHeadsUp()} is true. By doing this
     * the notification will be rendered on top of the screen.
     *
     * @param pinned whether it is pinned
     */
    public void setPinned(boolean pinned) {
        int intrinsicHeight = getIntrinsicHeight();
        mIsPinned = pinned;
        if (intrinsicHeight != getIntrinsicHeight()) {
            notifyHeightChanged(false /* needsAnimation */);
        }
        if (pinned) {
            setIconAnimationRunning(true);
            mExpandedWhenPinned = false;
        } else if (mExpandedWhenPinned) {
            setUserExpanded(true);
        }
        setChronometerRunning(mLastChronometerRunning);
    }

    public boolean isPinned() {
        return mIsPinned;
    }

    @Override
    public int getPinnedHeadsUpHeight() {
        return getPinnedHeadsUpHeight(true /* atLeastMinHeight */);
    }

    /**
     * @param atLeastMinHeight should the value returned be at least the minimum height.
     *                         Used to avoid cyclic calls
     * @return the height of the heads up notification when pinned
     */
    private int getPinnedHeadsUpHeight(boolean atLeastMinHeight) {
        if (mIsSummaryWithChildren) {
            return mChildrenContainer.getIntrinsicHeight();
        }
        if(mExpandedWhenPinned) {
            return Math.max(getMaxExpandHeight(), mHeadsUpHeight);
        } else if (atLeastMinHeight) {
            return Math.max(getCollapsedHeight(), mHeadsUpHeight);
        } else {
            return mHeadsUpHeight;
        }
    }

    /**
     * Mark whether this notification was just clicked, i.e. the user has just clicked this
     * notification in this frame.
     */
    public void setJustClicked(boolean justClicked) {
        mJustClicked = justClicked;
    }

    /**
     * @return true if this notification has been clicked in this frame, false otherwise
     */
    public boolean wasJustClicked() {
        return mJustClicked;
    }

    public void setChronometerRunning(boolean running) {
        mLastChronometerRunning = running;
        setChronometerRunning(running, mPrivateLayout);
        setChronometerRunning(running, mPublicLayout);
        if (mChildrenContainer != null) {
            List<ExpandableNotificationRow> notificationChildren =
                    mChildrenContainer.getNotificationChildren();
            for (int i = 0; i < notificationChildren.size(); i++) {
                ExpandableNotificationRow child = notificationChildren.get(i);
                child.setChronometerRunning(running);
            }
        }
    }

    private void setChronometerRunning(boolean running, NotificationContentView layout) {
        if (layout != null) {
            running = running || isPinned();
            View contractedChild = layout.getContractedChild();
            View expandedChild = layout.getExpandedChild();
            View headsUpChild = layout.getHeadsUpChild();
            setChronometerRunningForChild(running, contractedChild);
            setChronometerRunningForChild(running, expandedChild);
            setChronometerRunningForChild(running, headsUpChild);
        }
    }

    private void setChronometerRunningForChild(boolean running, View child) {
        if (child != null) {
            View chronometer = child.findViewById(com.android.internal.R.id.chronometer);
            if (chronometer instanceof Chronometer) {
                ((Chronometer) chronometer).setStarted(running);
            }
        }
    }

    public NotificationHeaderView getNotificationHeader() {
        if (mIsSummaryWithChildren) {
            return mChildrenContainer.getHeaderView();
        }
        return mPrivateLayout.getNotificationHeader();
    }

    /**
     * @return the currently visible notification header. This can be different from
     * {@link #getNotificationHeader()} in case it is a low-priority group.
     */
    public NotificationHeaderView getVisibleNotificationHeader() {
        if (mIsSummaryWithChildren && !mShowingPublic) {
            return mChildrenContainer.getVisibleHeader();
        }
        return getShowingLayout().getVisibleNotificationHeader();
    }

    public void setOnExpandClickListener(OnExpandClickListener onExpandClickListener) {
        mOnExpandClickListener = onExpandClickListener;
    }

    @Override
    public void setOnClickListener(@Nullable OnClickListener l) {
        super.setOnClickListener(l);
        mOnClickListener = l;
        updateClickAndFocus();
    }

    private void updateClickAndFocus() {
        boolean normalChild = !isChildInGroup() || isGroupExpanded();
        boolean clickable = mOnClickListener != null && normalChild;
        if (isFocusable() != normalChild) {
            setFocusable(normalChild);
        }
        if (isClickable() != clickable) {
            setClickable(clickable);
        }
    }

    public void setHeadsUpManager(HeadsUpManager headsUpManager) {
        mHeadsUpManager = headsUpManager;
    }

    public void setGutsView(MenuItem item) {
        if (mGuts != null && item.getGutsView() instanceof GutsContent) {
            ((GutsContent) item.getGutsView()).setGutsParent(mGuts);
            mGuts.setGutsContent((GutsContent) item.getGutsView());
        }
    }

    @Override
    protected void onAttachedToWindow() {
        super.onAttachedToWindow();
        Dependency.get(PluginManager.class).addPluginListener(this,
                NotificationMenuRowPlugin.class, false /* Allow multiple */);
    }

    @Override
    protected void onDetachedFromWindow() {
        super.onDetachedFromWindow();
        Dependency.get(PluginManager.class).removePluginListener(this);
    }

    @Override
    public void onPluginConnected(NotificationMenuRowPlugin plugin, Context pluginContext) {
        boolean existed = mMenuRow.getMenuView() != null;
        if (existed) {
            removeView(mMenuRow.getMenuView());
        }
        mMenuRow = plugin;
        if (mMenuRow.useDefaultMenuItems()) {
            ArrayList<MenuItem> items = new ArrayList<>();
            items.add(NotificationMenuRow.createInfoItem(mContext));
            items.add(NotificationMenuRow.createSnoozeItem(mContext));
            mMenuRow.setMenuItems(items);
        }
        if (existed) {
            createMenu();
        }
    }

    @Override
    public void onPluginDisconnected(NotificationMenuRowPlugin plugin) {
        boolean existed = mMenuRow.getMenuView() != null;
        mMenuRow = new NotificationMenuRow(mContext); // Back to default
        if (existed) {
            createMenu();
        }
    }

    public NotificationMenuRowPlugin createMenu() {
        if (mMenuRow.getMenuView() == null) {
            mMenuRow.createMenu(this, mStatusBarNotification);
            mMenuRow.setAppName(mAppName);
            FrameLayout.LayoutParams lp = new LayoutParams(LayoutParams.MATCH_PARENT,
                    LayoutParams.MATCH_PARENT);
            addView(mMenuRow.getMenuView(), MENU_VIEW_INDEX, lp);
        }
        return mMenuRow;
    }

    public NotificationMenuRowPlugin getProvider() {
        return mMenuRow;
    }

    @Override
    public void onDensityOrFontScaleChanged() {
        super.onDensityOrFontScaleChanged();
        initDimens();
        // Let's update our childrencontainer. This is intentionally not guarded with
        // mIsSummaryWithChildren since we might have had children but not anymore.
        if (mChildrenContainer != null) {
            mChildrenContainer.reInflateViews(mExpandClickListener, mEntry.notification);
        }
        if (mGuts != null) {
            View oldGuts = mGuts;
            int index = indexOfChild(oldGuts);
            removeView(oldGuts);
            mGuts = (NotificationGuts) LayoutInflater.from(mContext).inflate(
                    R.layout.notification_guts, this, false);
            mGuts.setVisibility(oldGuts.getVisibility());
            addView(mGuts, index);
        }
        View oldMenu = mMenuRow.getMenuView();
        if (oldMenu != null) {
            int menuIndex = indexOfChild(oldMenu);
            removeView(oldMenu);
            mMenuRow.createMenu(ExpandableNotificationRow.this, mStatusBarNotification);
            mMenuRow.setAppName(mAppName);
            addView(mMenuRow.getMenuView(), menuIndex);
        }
        for (NotificationContentView l : mLayouts) {
            l.reInflateViews();
        }
        mNotificationInflater.onDensityOrFontScaleChanged();
        onNotificationUpdated();
    }

    @Override
    public void onConfigurationChanged(Configuration newConfig) {
        if (mMenuRow.getMenuView() != null) {
            mMenuRow.onConfigurationChanged();
        }
    }

    public void setContentBackground(int customBackgroundColor, boolean animate,
            NotificationContentView notificationContentView) {
        if (getShowingLayout() == notificationContentView) {
            setTintColor(customBackgroundColor, animate);
        }
    }

    public void closeRemoteInput() {
        for (NotificationContentView l : mLayouts) {
            l.closeRemoteInput();
        }
    }

    /**
     * Set by how much the single line view should be indented.
     */
    public void setSingleLineWidthIndention(int indention) {
        mPrivateLayout.setSingleLineWidthIndention(indention);
    }

    public int getNotificationColor() {
        return mNotificationColor;
    }

    private void updateNotificationColor() {
        mNotificationColor = NotificationColorUtil.resolveContrastColor(mContext,
                getStatusBarNotification().getNotification().color,
                getBackgroundColorWithoutTint());
        mNotificationColorAmbient = NotificationColorUtil.resolveAmbientColor(mContext,
                getStatusBarNotification().getNotification().color);
    }

    public HybridNotificationView getSingleLineView() {
        return mPrivateLayout.getSingleLineView();
    }

    public HybridNotificationView getAmbientSingleLineView() {
        return getShowingLayout().getAmbientSingleLineChild();
    }

    public boolean isOnKeyguard() {
        return mOnKeyguard;
    }

    public void removeAllChildren() {
        List<ExpandableNotificationRow> notificationChildren
                = mChildrenContainer.getNotificationChildren();
        ArrayList<ExpandableNotificationRow> clonedList = new ArrayList<>(notificationChildren);
        for (int i = 0; i < clonedList.size(); i++) {
            ExpandableNotificationRow row = clonedList.get(i);
            if (row.keepInParent()) {
                continue;
            }
            mChildrenContainer.removeNotification(row);
            row.setIsChildInGroup(false, null);
        }
        onChildrenCountChanged();
    }

    public void setForceUnlocked(boolean forceUnlocked) {
        mForceUnlocked = forceUnlocked;
        if (mIsSummaryWithChildren) {
            List<ExpandableNotificationRow> notificationChildren = getNotificationChildren();
            for (ExpandableNotificationRow child : notificationChildren) {
                child.setForceUnlocked(forceUnlocked);
            }
        }
    }

    public void setDismissed(boolean dismissed, boolean fromAccessibility) {
        mDismissed = dismissed;
        mGroupParentWhenDismissed = mNotificationParent;
        mRefocusOnDismiss = fromAccessibility;
        mChildAfterViewWhenDismissed = null;
        if (isChildInGroup()) {
            List<ExpandableNotificationRow> notificationChildren =
                    mNotificationParent.getNotificationChildren();
            int i = notificationChildren.indexOf(this);
            if (i != -1 && i < notificationChildren.size() - 1) {
                mChildAfterViewWhenDismissed = notificationChildren.get(i + 1);
            }
        }
    }

    public boolean isDismissed() {
        return mDismissed;
    }

    public boolean keepInParent() {
        return mKeepInParent;
    }

    public void setKeepInParent(boolean keepInParent) {
        mKeepInParent = keepInParent;
    }

    public boolean isRemoved() {
        return mRemoved;
    }

    public void setRemoved() {
        mRemoved = true;
        mTranslationWhenRemoved = getTranslationY();
        mWasChildInGroupWhenRemoved = isChildInGroup();
        if (isChildInGroup()) {
            mTranslationWhenRemoved += getNotificationParent().getTranslationY();
        }
        mPrivateLayout.setRemoved();
    }

    public boolean wasChildInGroupWhenRemoved() {
        return mWasChildInGroupWhenRemoved;
    }

    public float getTranslationWhenRemoved() {
        return mTranslationWhenRemoved;
    }

    public NotificationChildrenContainer getChildrenContainer() {
        return mChildrenContainer;
    }

    public void setHeadsUpAnimatingAway(boolean headsUpAnimatingAway) {
        mHeadsupDisappearRunning = headsUpAnimatingAway;
        mPrivateLayout.setHeadsUpAnimatingAway(headsUpAnimatingAway);
    }

    /**
     * @return if the view was just heads upped and is now animating away. During such a time the
     * layout needs to be kept consistent
     */
    public boolean isHeadsUpAnimatingAway() {
        return mHeadsupDisappearRunning;
    }

    public View getChildAfterViewWhenDismissed() {
        return mChildAfterViewWhenDismissed;
    }

    public View getGroupParentWhenDismissed() {
        return mGroupParentWhenDismissed;
    }

    public void performDismiss() {
        if (mOnDismissRunnable != null) {
            mOnDismissRunnable.run();
        }
    }

    public void setOnDismissRunnable(Runnable onDismissRunnable) {
        mOnDismissRunnable = onDismissRunnable;
    }

    public View getNotificationIcon() {
        NotificationHeaderView notificationHeader = getVisibleNotificationHeader();
        if (notificationHeader != null) {
            return notificationHeader.getIcon();
        }
        return null;
    }

    /**
     * @return whether the notification is currently showing a view with an icon.
     */
    public boolean isShowingIcon() {
        if (areGutsExposed()) {
            return false;
        }
        return getVisibleNotificationHeader() != null;
    }

    /**
     * Set how much this notification is transformed into an icon.
     *
     * @param contentTransformationAmount A value from 0 to 1 indicating how much we are transformed
     *                                 to the content away
     * @param isLastChild is this the last child in the list. If true, then the transformation is
     *                    different since it's content fades out.
     */
    public void setContentTransformationAmount(float contentTransformationAmount,
            boolean isLastChild) {
        boolean changeTransformation = isLastChild != mIsLastChild;
        changeTransformation |= mContentTransformationAmount != contentTransformationAmount;
        mIsLastChild = isLastChild;
        mContentTransformationAmount = contentTransformationAmount;
        if (changeTransformation) {
            updateContentTransformation();
        }
    }

    /**
     * Set the icons to be visible of this notification.
     */
    public void setIconsVisible(boolean iconsVisible) {
        if (iconsVisible != mIconsVisible) {
            mIconsVisible = iconsVisible;
            updateIconVisibilities();
        }
    }

    @Override
    protected void onBelowSpeedBumpChanged() {
        updateIconVisibilities();
    }

    private void updateContentTransformation() {
        float contentAlpha;
        float translationY = -mContentTransformationAmount * mIconTransformContentShift;
        if (mIsLastChild) {
            contentAlpha = 1.0f - mContentTransformationAmount;
            contentAlpha = Math.min(contentAlpha / 0.5f, 1.0f);
            contentAlpha = Interpolators.ALPHA_OUT.getInterpolation(contentAlpha);
            translationY *= 0.4f;
        } else {
            contentAlpha = 1.0f;
        }
        for (NotificationContentView l : mLayouts) {
            l.setAlpha(contentAlpha);
            l.setTranslationY(translationY);
        }
        if (mChildrenContainer != null) {
            mChildrenContainer.setAlpha(contentAlpha);
            mChildrenContainer.setTranslationY(translationY);
            // TODO: handle children fade out better
        }
    }

    private void updateIconVisibilities() {
        boolean visible = isChildInGroup()
                || (isBelowSpeedBump() && !NotificationShelf.SHOW_AMBIENT_ICONS)
                || mIconsVisible;
        for (NotificationContentView l : mLayouts) {
            l.setIconsVisible(visible);
        }
        if (mChildrenContainer != null) {
            mChildrenContainer.setIconsVisible(visible);
        }
    }

    /**
     * Get the relative top padding of a view relative to this view. This recursively walks up the
     * hierarchy and does the corresponding measuring.
     *
     * @param view the view to the the padding for. The requested view has to be a child of this
     *             notification.
     * @return the toppadding
     */
    public int getRelativeTopPadding(View view) {
        int topPadding = 0;
        while (view.getParent() instanceof ViewGroup) {
            topPadding += view.getTop();
            view = (View) view.getParent();
            if (view instanceof ExpandableNotificationRow) {
                return topPadding;
            }
        }
        return topPadding;
    }

    public float getContentTranslation() {
        return mPrivateLayout.getTranslationY();
    }

    public void setIsLowPriority(boolean isLowPriority) {
        mIsLowPriority = isLowPriority;
        mPrivateLayout.setIsLowPriority(isLowPriority);
        mNotificationInflater.setIsLowPriority(mIsLowPriority);
        if (mChildrenContainer != null) {
            mChildrenContainer.setIsLowPriority(isLowPriority);
        }
    }


    public void setLowPriorityStateUpdated(boolean lowPriorityStateUpdated) {
        mLowPriorityStateUpdated = lowPriorityStateUpdated;
    }

    public boolean hasLowPriorityStateUpdated() {
        return mLowPriorityStateUpdated;
    }

    public boolean isLowPriority() {
        return mIsLowPriority;
    }

    public void setUseIncreasedCollapsedHeight(boolean use) {
        mUseIncreasedCollapsedHeight = use;
        mNotificationInflater.setUsesIncreasedHeight(use);
    }

    public void setUseIncreasedHeadsUpHeight(boolean use) {
        mUseIncreasedHeadsUpHeight = use;
        mNotificationInflater.setUsesIncreasedHeadsUpHeight(use);
    }

    public void setRemoteViewClickHandler(RemoteViews.OnClickHandler remoteViewClickHandler) {
        mNotificationInflater.setRemoteViewClickHandler(remoteViewClickHandler);
    }

    public void setInflationCallback(InflationCallback callback) {
        mNotificationInflater.setInflationCallback(callback);
    }

    public void setNeedsRedaction(boolean needsRedaction) {
        mNotificationInflater.setRedactAmbient(needsRedaction);
    }

    @VisibleForTesting
    public NotificationInflater getNotificationInflater() {
        return mNotificationInflater;
    }

    public int getNotificationColorAmbient() {
        return mNotificationColorAmbient;
    }

    public interface ExpansionLogger {
        void logNotificationExpansion(String key, boolean userAction, boolean expanded);
    }

    public ExpandableNotificationRow(Context context, AttributeSet attrs) {
        super(context, attrs);
        mFalsingManager = FalsingManager.getInstance(context);
        mNotificationInflater = new NotificationInflater(this);
        mMenuRow = new NotificationMenuRow(mContext);
        initDimens();
    }

    private void initDimens() {
        mNotificationMinHeightLegacy = getFontScaledHeight(R.dimen.notification_min_height_legacy);
        mNotificationMinHeight = getFontScaledHeight(R.dimen.notification_min_height);
        mNotificationMinHeightLarge = getFontScaledHeight(
                R.dimen.notification_min_height_increased);
        mNotificationMaxHeight = getFontScaledHeight(R.dimen.notification_max_height);
        mNotificationAmbientHeight = getFontScaledHeight(R.dimen.notification_ambient_height);
        mMaxHeadsUpHeightLegacy = getFontScaledHeight(
                R.dimen.notification_max_heads_up_height_legacy);
        mMaxHeadsUpHeight = getFontScaledHeight(R.dimen.notification_max_heads_up_height);
        mMaxHeadsUpHeightIncreased = getFontScaledHeight(
                R.dimen.notification_max_heads_up_height_increased);

        Resources res = getResources();
        mIncreasedPaddingBetweenElements = res.getDimensionPixelSize(
                R.dimen.notification_divider_height_increased);
        mIconTransformContentShiftNoIcon = res.getDimensionPixelSize(
                R.dimen.notification_icon_transform_content_shift);
        mEnableNonGroupedNotificationExpand =
                res.getBoolean(R.bool.config_enableNonGroupedNotificationExpand);
        mShowGroupBackgroundWhenExpanded =
                res.getBoolean(R.bool.config_showGroupNotificationBgWhenExpanded);
    }

    /**
     * @param dimenId the dimen to look up
     * @return the font scaled dimen as if it were in sp but doesn't shrink sizes below dp
     */
    private int getFontScaledHeight(int dimenId) {
        int dimensionPixelSize = getResources().getDimensionPixelSize(dimenId);
        float factor = Math.max(1.0f, getResources().getDisplayMetrics().scaledDensity /
                getResources().getDisplayMetrics().density);
        return (int) (dimensionPixelSize * factor);
    }

    /**
     * Resets this view so it can be re-used for an updated notification.
     */
    public void reset() {
        mShowingPublicInitialized = false;
        onHeightReset();
        requestLayout();
    }

    @Override
    protected void onFinishInflate() {
        super.onFinishInflate();
        mPublicLayout = (NotificationContentView) findViewById(R.id.expandedPublic);
        mPrivateLayout = (NotificationContentView) findViewById(R.id.expanded);
        mLayouts = new NotificationContentView[] {mPrivateLayout, mPublicLayout};

        for (NotificationContentView l : mLayouts) {
            l.setExpandClickListener(mExpandClickListener);
            l.setContainingNotification(this);
        }
        mGutsStub = (ViewStub) findViewById(R.id.notification_guts_stub);
        mGutsStub.setOnInflateListener(new ViewStub.OnInflateListener() {
            @Override
            public void onInflate(ViewStub stub, View inflated) {
                mGuts = (NotificationGuts) inflated;
                mGuts.setClipTopAmount(getClipTopAmount());
                mGuts.setActualHeight(getActualHeight());
                mGutsStub = null;
            }
        });
        mChildrenContainerStub = (ViewStub) findViewById(R.id.child_container_stub);
        mChildrenContainerStub.setOnInflateListener(new ViewStub.OnInflateListener() {

            @Override
            public void onInflate(ViewStub stub, View inflated) {
                mChildrenContainer = (NotificationChildrenContainer) inflated;
                mChildrenContainer.setIsLowPriority(mIsLowPriority);
                mChildrenContainer.setContainingNotification(ExpandableNotificationRow.this);
                mChildrenContainer.onNotificationUpdated();

                if (mShouldTranslateContents) {
                    mTranslateableViews.add(mChildrenContainer);
                }
            }
        });

        if (mShouldTranslateContents) {
            // Add the views that we translate to reveal the menu
            mTranslateableViews = new ArrayList<>();
            for (int i = 0; i < getChildCount(); i++) {
                mTranslateableViews.add(getChildAt(i));
            }
            // Remove views that don't translate
            mTranslateableViews.remove(mChildrenContainerStub);
            mTranslateableViews.remove(mGutsStub);
        }
    }

    public void resetTranslation() {
        if (mTranslateAnim != null) {
            mTranslateAnim.cancel();
        }

        if (!mShouldTranslateContents) {
            setTranslationX(0);
        } else if (mTranslateableViews != null) {
            for (int i = 0; i < mTranslateableViews.size(); i++) {
                mTranslateableViews.get(i).setTranslationX(0);
            }
            invalidateOutline();
        }

        mMenuRow.resetMenu();
    }

    public void animateTranslateNotification(final float leftTarget) {
        if (mTranslateAnim != null) {
            mTranslateAnim.cancel();
        }
        mTranslateAnim = getTranslateViewAnimator(leftTarget, null /* updateListener */);
        if (mTranslateAnim != null) {
            mTranslateAnim.start();
        }
    }

    @Override
    public void setTranslation(float translationX) {
        if (areGutsExposed()) {
            // Don't translate if guts are showing.
            return;
        }
        if (!mShouldTranslateContents) {
            setTranslationX(translationX);
        } else if (mTranslateableViews != null) {
            // Translate the group of views
            for (int i = 0; i < mTranslateableViews.size(); i++) {
                if (mTranslateableViews.get(i) != null) {
                    mTranslateableViews.get(i).setTranslationX(translationX);
                }
            }
            invalidateOutline();
        }
        if (mMenuRow.getMenuView() != null) {
            mMenuRow.onTranslationUpdate(translationX);
        }
    }

    @Override
    public float getTranslation() {
        if (!mShouldTranslateContents) {
            return getTranslationX();
        }

        if (mTranslateableViews != null && mTranslateableViews.size() > 0) {
            // All of the views in the list should have same translation, just use first one.
            return mTranslateableViews.get(0).getTranslationX();
        }

        return 0;
    }

    public Animator getTranslateViewAnimator(final float leftTarget,
            AnimatorUpdateListener listener) {
        if (mTranslateAnim != null) {
            mTranslateAnim.cancel();
        }
        if (areGutsExposed()) {
            // No translation if guts are exposed.
            return null;
        }
        final ObjectAnimator translateAnim = ObjectAnimator.ofFloat(this, TRANSLATE_CONTENT,
                leftTarget);
        if (listener != null) {
            translateAnim.addUpdateListener(listener);
        }
        translateAnim.addListener(new AnimatorListenerAdapter() {
            boolean cancelled = false;

            @Override
            public void onAnimationCancel(Animator anim) {
                cancelled = true;
            }

            @Override
            public void onAnimationEnd(Animator anim) {
                if (!cancelled && leftTarget == 0) {
                    mMenuRow.resetMenu();
                    mTranslateAnim = null;
                }
            }
        });
        mTranslateAnim = translateAnim;
        return translateAnim;
    }

    public void inflateGuts() {
        if (mGuts == null) {
            mGutsStub.inflate();
        }
    }

    private void updateChildrenVisibility() {
        mPrivateLayout.setVisibility(!mShowingPublic && !mIsSummaryWithChildren ? VISIBLE
                : INVISIBLE);
        if (mChildrenContainer != null) {
            mChildrenContainer.setVisibility(!mShowingPublic && mIsSummaryWithChildren ? VISIBLE
                    : INVISIBLE);
        }
        // The limits might have changed if the view suddenly became a group or vice versa
        updateLimits();
    }

    @Override
    public boolean onRequestSendAccessibilityEventInternal(View child, AccessibilityEvent event) {
        if (super.onRequestSendAccessibilityEventInternal(child, event)) {
            // Add a record for the entire layout since its content is somehow small.
            // The event comes from a leaf view that is interacted with.
            AccessibilityEvent record = AccessibilityEvent.obtain();
            onInitializeAccessibilityEvent(record);
            dispatchPopulateAccessibilityEvent(record);
            event.appendRecord(record);
            return true;
        }
        return false;
    }

    @Override
    public void setDark(boolean dark, boolean fade, long delay) {
        super.setDark(dark, fade, delay);
        if (!mIsHeadsUp) {
            // Only fade the showing view of the pulsing notification.
            fade = false;
        }
        final NotificationContentView showing = getShowingLayout();
        if (showing != null) {
            showing.setDark(dark, fade, delay);
        }
        if (mIsSummaryWithChildren) {
            mChildrenContainer.setDark(dark, fade, delay);
        }
    }

    public boolean isExpandable() {
        if (mIsSummaryWithChildren && !mShowingPublic) {
            return !mChildrenExpanded;
        }
        return mEnableNonGroupedNotificationExpand && mExpandable;
    }

    public void setExpandable(boolean expandable) {
        mExpandable = expandable;
        mPrivateLayout.updateExpandButtons(isExpandable());
    }

    @Override
    public void setClipToActualHeight(boolean clipToActualHeight) {
        super.setClipToActualHeight(clipToActualHeight || isUserLocked());
        getShowingLayout().setClipToActualHeight(clipToActualHeight || isUserLocked());
    }

    /**
     * @return whether the user has changed the expansion state
     */
    public boolean hasUserChangedExpansion() {
        return mHasUserChangedExpansion;
    }

    public boolean isUserExpanded() {
        return mUserExpanded;
    }

    /**
     * Set this notification to be expanded by the user
     *
     * @param userExpanded whether the user wants this notification to be expanded
     */
    public void setUserExpanded(boolean userExpanded) {
        setUserExpanded(userExpanded, false /* allowChildExpansion */);
    }

    /**
     * Set this notification to be expanded by the user
     *
     * @param userExpanded whether the user wants this notification to be expanded
     * @param allowChildExpansion whether a call to this method allows expanding children
     */
    public void setUserExpanded(boolean userExpanded, boolean allowChildExpansion) {
        mFalsingManager.setNotificationExpanded();
        if (mIsSummaryWithChildren && !mShowingPublic && allowChildExpansion
                && !mChildrenContainer.showingAsLowPriority()) {
            final boolean wasExpanded = mGroupManager.isGroupExpanded(mStatusBarNotification);
            mGroupManager.setGroupExpanded(mStatusBarNotification, userExpanded);
            onExpansionChanged(true /* userAction */, wasExpanded);
            return;
        }
        if (userExpanded && !mExpandable) return;
        final boolean wasExpanded = isExpanded();
        mHasUserChangedExpansion = true;
        mUserExpanded = userExpanded;
        onExpansionChanged(true /* userAction */, wasExpanded);
        if (!wasExpanded && isExpanded()
                && getActualHeight() != getIntrinsicHeight()) {
            notifyHeightChanged(true /* needsAnimation */);
        }
    }

    public void resetUserExpansion() {
        boolean changed = mUserExpanded;
        mHasUserChangedExpansion = false;
        mUserExpanded = false;
        if (changed && mIsSummaryWithChildren) {
            mChildrenContainer.onExpansionChanged();
        }
        updateShelfIconColor();
    }

    public boolean isUserLocked() {
        return mUserLocked && !mForceUnlocked;
    }

    public void setUserLocked(boolean userLocked) {
        mUserLocked = userLocked;
        mPrivateLayout.setUserExpanding(userLocked);
        // This is intentionally not guarded with mIsSummaryWithChildren since we might have had
        // children but not anymore.
        if (mChildrenContainer != null) {
            mChildrenContainer.setUserLocked(userLocked);
            if (mIsSummaryWithChildren && (userLocked || !isGroupExpanded())) {
                updateBackgroundForGroupState();
            }
        }
    }

    /**
     * @return has the system set this notification to be expanded
     */
    public boolean isSystemExpanded() {
        return mIsSystemExpanded;
    }

    /**
     * Set this notification to be expanded by the system.
     *
     * @param expand whether the system wants this notification to be expanded.
     */
    public void setSystemExpanded(boolean expand) {
        if (expand != mIsSystemExpanded) {
            final boolean wasExpanded = isExpanded();
            mIsSystemExpanded = expand;
            notifyHeightChanged(false /* needsAnimation */);
            onExpansionChanged(false /* userAction */, wasExpanded);
            if (mIsSummaryWithChildren) {
                mChildrenContainer.updateGroupOverflow();
            }
        }
    }

    /**
     * @param onKeyguard whether to prevent notification expansion
     */
    public void setOnKeyguard(boolean onKeyguard) {
        if (onKeyguard != mOnKeyguard) {
            final boolean wasExpanded = isExpanded();
            mOnKeyguard = onKeyguard;
            onExpansionChanged(false /* userAction */, wasExpanded);
            if (wasExpanded != isExpanded()) {
                if (mIsSummaryWithChildren) {
                    mChildrenContainer.updateGroupOverflow();
                }
                notifyHeightChanged(false /* needsAnimation */);
            }
        }
    }

    /**
     * @return Can the underlying notification be cleared? This can be different from whether the
     *         notification can be dismissed in case notifications are sensitive on the lockscreen.
     * @see #canViewBeDismissed()
     */
    public boolean isClearable() {
        if (mStatusBarNotification == null || !mStatusBarNotification.isClearable()) {
            return false;
        }
        if (mIsSummaryWithChildren) {
            List<ExpandableNotificationRow> notificationChildren =
                    mChildrenContainer.getNotificationChildren();
            for (int i = 0; i < notificationChildren.size(); i++) {
                ExpandableNotificationRow child = notificationChildren.get(i);
                if (!child.isClearable()) {
                    return false;
                }
            }
        }
        return true;
    }

    @Override
    public int getIntrinsicHeight() {
        if (isUserLocked()) {
            return getActualHeight();
        }
        if (mGuts != null && mGuts.isExposed()) {
            return mGuts.getIntrinsicHeight();
        } else if ((isChildInGroup() && !isGroupExpanded())) {
            return mPrivateLayout.getMinHeight();
        } else if (mSensitive && mHideSensitiveForIntrinsicHeight) {
            return getMinHeight();
        } else if (mIsSummaryWithChildren && (!mOnKeyguard || mShowAmbient)) {
            return mChildrenContainer.getIntrinsicHeight();
        } else if (isHeadsUpAllowed() && (mIsHeadsUp || mHeadsupDisappearRunning)) {
            if (isPinned() || mHeadsupDisappearRunning) {
                return getPinnedHeadsUpHeight(true /* atLeastMinHeight */);
            } else if (isExpanded()) {
                return Math.max(getMaxExpandHeight(), mHeadsUpHeight);
            } else {
                return Math.max(getCollapsedHeight(), mHeadsUpHeight);
            }
        } else if (isExpanded()) {
            return getMaxExpandHeight();
        } else {
            return getCollapsedHeight();
        }
    }

    private boolean isHeadsUpAllowed() {
        return !mOnKeyguard && !mShowAmbient;
    }

    @Override
    public boolean isGroupExpanded() {
        return mGroupManager.isGroupExpanded(mStatusBarNotification);
    }

    private void onChildrenCountChanged() {
        mIsSummaryWithChildren = StatusBar.ENABLE_CHILD_NOTIFICATIONS
                && mChildrenContainer != null && mChildrenContainer.getNotificationChildCount() > 0;
        if (mIsSummaryWithChildren && mChildrenContainer.getHeaderView() == null) {
            mChildrenContainer.recreateNotificationHeader(mExpandClickListener
            );
        }
        getShowingLayout().updateBackgroundColor(false /* animate */);
        mPrivateLayout.updateExpandButtons(isExpandable());
        updateChildrenHeaderAppearance();
        updateChildrenVisibility();
    }

    public void updateChildrenHeaderAppearance() {
        if (mIsSummaryWithChildren) {
            mChildrenContainer.updateChildrenHeaderAppearance();
        }
    }

    /**
     * Check whether the view state is currently expanded. This is given by the system in {@link
     * #setSystemExpanded(boolean)} and can be overridden by user expansion or
     * collapsing in {@link #setUserExpanded(boolean)}. Note that the visual appearance of this
     * view can differ from this state, if layout params are modified from outside.
     *
     * @return whether the view state is currently expanded.
     */
    public boolean isExpanded() {
        return isExpanded(false /* allowOnKeyguard */);
    }

    public boolean isExpanded(boolean allowOnKeyguard) {
        return (!mOnKeyguard || allowOnKeyguard)
                && (!hasUserChangedExpansion() && (isSystemExpanded() || isSystemChildExpanded())
                || isUserExpanded());
    }

    private boolean isSystemChildExpanded() {
        return mIsSystemChildExpanded;
    }

    public void setSystemChildExpanded(boolean expanded) {
        mIsSystemChildExpanded = expanded;
    }

    public void setLayoutListener(LayoutListener listener) {
        mLayoutListener = listener;
    }

    public void removeListener() {
        mLayoutListener = null;
    }

    @Override
    protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
        super.onLayout(changed, left, top, right, bottom);
        updateMaxHeights();
        if (mMenuRow.getMenuView() != null) {
            mMenuRow.onHeightUpdate();
        }
        updateContentShiftHeight();
        if (mLayoutListener != null) {
            mLayoutListener.onLayout();
        }
    }

    /**
     * Updates the content shift height such that the header is completely hidden when coming from
     * the top.
     */
    private void updateContentShiftHeight() {
        NotificationHeaderView notificationHeader = getVisibleNotificationHeader();
        if (notificationHeader != null) {
            CachingIconView icon = notificationHeader.getIcon();
            mIconTransformContentShift = getRelativeTopPadding(icon) + icon.getHeight();
        } else {
            mIconTransformContentShift = mIconTransformContentShiftNoIcon;
        }
    }

    private void updateMaxHeights() {
        int intrinsicBefore = getIntrinsicHeight();
        View expandedChild = mPrivateLayout.getExpandedChild();
        if (expandedChild == null) {
            expandedChild = mPrivateLayout.getContractedChild();
        }
        mMaxExpandHeight = expandedChild.getHeight();
        View headsUpChild = mPrivateLayout.getHeadsUpChild();
        if (headsUpChild == null) {
            headsUpChild = mPrivateLayout.getContractedChild();
        }
        mHeadsUpHeight = headsUpChild.getHeight();
        if (intrinsicBefore != getIntrinsicHeight()) {
            notifyHeightChanged(true  /* needsAnimation */);
        }
    }

    @Override
    public void notifyHeightChanged(boolean needsAnimation) {
        super.notifyHeightChanged(needsAnimation);
        getShowingLayout().requestSelectLayout(needsAnimation || isUserLocked());
    }

    public void setSensitive(boolean sensitive, boolean hideSensitive) {
        mSensitive = sensitive;
        mSensitiveHiddenInGeneral = hideSensitive;
    }

    @Override
    public void setHideSensitiveForIntrinsicHeight(boolean hideSensitive) {
        mHideSensitiveForIntrinsicHeight = hideSensitive;
        if (mIsSummaryWithChildren) {
            List<ExpandableNotificationRow> notificationChildren =
                    mChildrenContainer.getNotificationChildren();
            for (int i = 0; i < notificationChildren.size(); i++) {
                ExpandableNotificationRow child = notificationChildren.get(i);
                child.setHideSensitiveForIntrinsicHeight(hideSensitive);
            }
        }
    }

    @Override
    public void setHideSensitive(boolean hideSensitive, boolean animated, long delay,
            long duration) {
        boolean oldShowingPublic = mShowingPublic;
        mShowingPublic = mSensitive && hideSensitive;
        if (mShowingPublicInitialized && mShowingPublic == oldShowingPublic) {
            return;
        }

        // bail out if no public version
        if (mPublicLayout.getChildCount() == 0) return;

        if (!animated) {
            mPublicLayout.animate().cancel();
            mPrivateLayout.animate().cancel();
            if (mChildrenContainer != null) {
                mChildrenContainer.animate().cancel();
                mChildrenContainer.setAlpha(1f);
            }
            mPublicLayout.setAlpha(1f);
            mPrivateLayout.setAlpha(1f);
            mPublicLayout.setVisibility(mShowingPublic ? View.VISIBLE : View.INVISIBLE);
            updateChildrenVisibility();
        } else {
            animateShowingPublic(delay, duration);
        }
        NotificationContentView showingLayout = getShowingLayout();
        showingLayout.updateBackgroundColor(animated);
        mPrivateLayout.updateExpandButtons(isExpandable());
        updateShelfIconColor();
        showingLayout.setDark(isDark(), false /* animate */, 0 /* delay */);
        mShowingPublicInitialized = true;
    }

    private void animateShowingPublic(long delay, long duration) {
        View[] privateViews = mIsSummaryWithChildren
                ? new View[] {mChildrenContainer}
                : new View[] {mPrivateLayout};
        View[] publicViews = new View[] {mPublicLayout};
        View[] hiddenChildren = mShowingPublic ? privateViews : publicViews;
        View[] shownChildren = mShowingPublic ? publicViews : privateViews;
        for (final View hiddenView : hiddenChildren) {
            hiddenView.setVisibility(View.VISIBLE);
            hiddenView.animate().cancel();
            hiddenView.animate()
                    .alpha(0f)
                    .setStartDelay(delay)
                    .setDuration(duration)
                    .withEndAction(new Runnable() {
                        @Override
                        public void run() {
                            hiddenView.setVisibility(View.INVISIBLE);
                        }
                    });
        }
        for (View showView : shownChildren) {
            showView.setVisibility(View.VISIBLE);
            showView.setAlpha(0f);
            showView.animate().cancel();
            showView.animate()
                    .alpha(1f)
                    .setStartDelay(delay)
                    .setDuration(duration);
        }
    }

    @Override
    public boolean mustStayOnScreen() {
        return mIsHeadsUp;
    }

    /**
     * @return Whether this view is allowed to be dismissed. Only valid for visible notifications as
     *         otherwise some state might not be updated. To request about the general clearability
     *         see {@link #isClearable()}.
     */
    public boolean canViewBeDismissed() {
        return isClearable() && (!mShowingPublic || !mSensitiveHiddenInGeneral);
    }

    public void makeActionsVisibile() {
        setUserExpanded(true, true);
        if (isChildInGroup()) {
            mGroupManager.setGroupExpanded(mStatusBarNotification, true);
        }
        notifyHeightChanged(false /* needsAnimation */);
    }

    public void setChildrenExpanded(boolean expanded, boolean animate) {
        mChildrenExpanded = expanded;
        if (mChildrenContainer != null) {
            mChildrenContainer.setChildrenExpanded(expanded);
        }
        updateBackgroundForGroupState();
        updateClickAndFocus();
    }

    public static void applyTint(View v, int color) {
        int alpha;
        if (color != 0) {
            alpha = COLORED_DIVIDER_ALPHA;
        } else {
            color = 0xff000000;
            alpha = DEFAULT_DIVIDER_ALPHA;
        }
        if (v.getBackground() instanceof ColorDrawable) {
            ColorDrawable background = (ColorDrawable) v.getBackground();
            background.mutate();
            background.setColor(color);
            background.setAlpha(alpha);
        }
    }

    public int getMaxExpandHeight() {
        return mMaxExpandHeight;
    }

    public boolean areGutsExposed() {
        return (mGuts != null && mGuts.isExposed());
    }

    @Override
    public boolean isContentExpandable() {
        if (mIsSummaryWithChildren && !mShowingPublic) {
            return true;
        }
        NotificationContentView showingLayout = getShowingLayout();
        return showingLayout.isContentExpandable();
    }

    @Override
    protected View getContentView() {
        if (mIsSummaryWithChildren && !mShowingPublic) {
            return mChildrenContainer;
        }
        return getShowingLayout();
    }

    @Override
    protected void onAppearAnimationFinished(boolean wasAppearing) {
        super.onAppearAnimationFinished(wasAppearing);
        if (wasAppearing) {
            // During the animation the visible view might have changed, so let's make sure all
            // alphas are reset
            if (mChildrenContainer != null) {
                mChildrenContainer.setAlpha(1.0f);
                mChildrenContainer.setLayerType(LAYER_TYPE_NONE, null);
            }
            for (NotificationContentView l : mLayouts) {
                l.setAlpha(1.0f);
                l.setLayerType(LAYER_TYPE_NONE, null);
            }
        }
    }

    @Override
    public int getExtraBottomPadding() {
        if (mIsSummaryWithChildren && isGroupExpanded()) {
            return mIncreasedPaddingBetweenElements;
        }
        return 0;
    }

    @Override
    public void setActualHeight(int height, boolean notifyListeners) {
        boolean changed = height != getActualHeight();
        super.setActualHeight(height, notifyListeners);
        if (changed && isRemoved()) {
            // TODO: remove this once we found the gfx bug for this.
            // This is a hack since a removed view sometimes would just stay blank. it occured
            // when sending yourself a message and then clicking on it.
            ViewGroup parent = (ViewGroup) getParent();
            if (parent != null) {
                parent.invalidate();
            }
        }
        if (mGuts != null && mGuts.isExposed()) {
            mGuts.setActualHeight(height);
            return;
        }
        int contentHeight = Math.max(getMinHeight(), height);
        for (NotificationContentView l : mLayouts) {
            l.setContentHeight(contentHeight);
        }
        if (mIsSummaryWithChildren) {
            mChildrenContainer.setActualHeight(height);
        }
        if (mGuts != null) {
            mGuts.setActualHeight(height);
        }
    }

    @Override
    public int getMaxContentHeight() {
        if (mIsSummaryWithChildren && !mShowingPublic) {
            return mChildrenContainer.getMaxContentHeight();
        }
        NotificationContentView showingLayout = getShowingLayout();
        return showingLayout.getMaxHeight();
    }

    @Override
    public int getMinHeight() {
        if (mGuts != null && mGuts.isExposed()) {
            return mGuts.getIntrinsicHeight();
        } else if (isHeadsUpAllowed() && mIsHeadsUp && mHeadsUpManager.isTrackingHeadsUp()) {
                return getPinnedHeadsUpHeight(false /* atLeastMinHeight */);
        } else if (mIsSummaryWithChildren && !isGroupExpanded() && !mShowingPublic) {
            return mChildrenContainer.getMinHeight();
        } else if (isHeadsUpAllowed() && mIsHeadsUp) {
            return mHeadsUpHeight;
        }
        NotificationContentView showingLayout = getShowingLayout();
        return showingLayout.getMinHeight();
    }

    @Override
    public int getCollapsedHeight() {
        if (mIsSummaryWithChildren && !mShowingPublic) {
            return mChildrenContainer.getCollapsedHeight();
        }
        return getMinHeight();
    }

    @Override
    public void setClipTopAmount(int clipTopAmount) {
        super.setClipTopAmount(clipTopAmount);
        for (NotificationContentView l : mLayouts) {
            l.setClipTopAmount(clipTopAmount);
        }
        if (mGuts != null) {
            mGuts.setClipTopAmount(clipTopAmount);
        }
    }

    @Override
    public void setClipBottomAmount(int clipBottomAmount) {
        if (clipBottomAmount != mClipBottomAmount) {
            super.setClipBottomAmount(clipBottomAmount);
            for (NotificationContentView l : mLayouts) {
                l.setClipBottomAmount(clipBottomAmount);
            }
            if (mGuts != null) {
                mGuts.setClipBottomAmount(clipBottomAmount);
            }
        }
        if (mChildrenContainer != null) {
            // We have to update this even if it hasn't changed, since the children locations can
            // have changed
            mChildrenContainer.setClipBottomAmount(clipBottomAmount);
        }
    }

    public boolean isMaxExpandHeightInitialized() {
        return mMaxExpandHeight != 0;
    }

    public NotificationContentView getShowingLayout() {
        return mShowingPublic ? mPublicLayout : mPrivateLayout;
    }

    public void setLegacy(boolean legacy) {
        for (NotificationContentView l : mLayouts) {
            l.setLegacy(legacy);
        }
    }

    @Override
    protected void updateBackgroundTint() {
        super.updateBackgroundTint();
        updateBackgroundForGroupState();
        if (mIsSummaryWithChildren) {
            List<ExpandableNotificationRow> notificationChildren =
                    mChildrenContainer.getNotificationChildren();
            for (int i = 0; i < notificationChildren.size(); i++) {
                ExpandableNotificationRow child = notificationChildren.get(i);
                child.updateBackgroundForGroupState();
            }
        }
    }

    /**
     * Called when a group has finished animating from collapsed or expanded state.
     */
    public void onFinishedExpansionChange() {
        mGroupExpansionChanging = false;
        updateBackgroundForGroupState();
    }

    /**
     * Updates the parent and children backgrounds in a group based on the expansion state.
     */
    public void updateBackgroundForGroupState() {
        if (mIsSummaryWithChildren) {
            // Only when the group has finished expanding do we hide its background.
            mShowNoBackground = !mShowGroupBackgroundWhenExpanded && isGroupExpanded()
                    && !isGroupExpansionChanging() && !isUserLocked();
            mChildrenContainer.updateHeaderForExpansion(mShowNoBackground);
            List<ExpandableNotificationRow> children = mChildrenContainer.getNotificationChildren();
            for (int i = 0; i < children.size(); i++) {
                children.get(i).updateBackgroundForGroupState();
            }
        } else if (isChildInGroup()) {
            final int childColor = getShowingLayout().getBackgroundColorForExpansionState();
            // Only show a background if the group is expanded OR if it is expanding / collapsing
            // and has a custom background color.
            final boolean showBackground = isGroupExpanded()
                    || ((mNotificationParent.isGroupExpansionChanging()
                    || mNotificationParent.isUserLocked()) && childColor != 0);
            mShowNoBackground = !showBackground;
        } else {
            // Only children or parents ever need no background.
            mShowNoBackground = false;
        }
        updateOutline();
        updateBackground();
    }

    public int getPositionOfChild(ExpandableNotificationRow childRow) {
        if (mIsSummaryWithChildren) {
            return mChildrenContainer.getPositionInLinearLayout(childRow);
        }
        return 0;
    }

    public void setExpansionLogger(ExpansionLogger logger, String key) {
        mLogger = logger;
        mLoggingKey = key;
    }

    public void onExpandedByGesture(boolean userExpanded) {
        int event = MetricsEvent.ACTION_NOTIFICATION_GESTURE_EXPANDER;
        if (mGroupManager.isSummaryOfGroup(getStatusBarNotification())) {
            event = MetricsEvent.ACTION_NOTIFICATION_GROUP_GESTURE_EXPANDER;
        }
        MetricsLogger.action(mContext, event, userExpanded);
    }

    @Override
    public float getIncreasedPaddingAmount() {
        if (mIsSummaryWithChildren) {
            if (isGroupExpanded()) {
                return 1.0f;
            } else if (isUserLocked()) {
                return mChildrenContainer.getIncreasedPaddingAmount();
            }
        } else if (isColorized() && (!mIsLowPriority || isExpanded())) {
            return -1.0f;
        }
        return 0.0f;
    }

    private boolean isColorized() {
        return mIsColorized && mBgTint != NO_COLOR;
    }

    @Override
    protected boolean disallowSingleClick(MotionEvent event) {
        float x = event.getX();
        float y = event.getY();
        NotificationHeaderView header = getVisibleNotificationHeader();
        if (header != null && header.isInTouchRect(x - getTranslation(), y)) {
            return true;
        }
        if ((!mIsSummaryWithChildren || mShowingPublic)
                && getShowingLayout().disallowSingleClick(x, y)) {
            return true;
        }
        return super.disallowSingleClick(event);
    }

    private void onExpansionChanged(boolean userAction, boolean wasExpanded) {
        boolean nowExpanded = isExpanded();
        if (mIsSummaryWithChildren && (!mIsLowPriority || wasExpanded)) {
            nowExpanded = mGroupManager.isGroupExpanded(mStatusBarNotification);
        }
        if (nowExpanded != wasExpanded) {
            updateShelfIconColor();
            if (mLogger != null) {
                mLogger.logNotificationExpansion(mLoggingKey, userAction, nowExpanded);
            }
            if (mIsSummaryWithChildren) {
                mChildrenContainer.onExpansionChanged();
            }
        }
    }

    @Override
    public void onInitializeAccessibilityNodeInfoInternal(AccessibilityNodeInfo info) {
        super.onInitializeAccessibilityNodeInfoInternal(info);
        if (canViewBeDismissed()) {
            info.addAction(AccessibilityNodeInfo.AccessibilityAction.ACTION_DISMISS);
        }
        boolean expandable = mShowingPublic;
        boolean isExpanded = false;
        if (!expandable) {
            if (mIsSummaryWithChildren) {
                expandable = true;
                if (!mIsLowPriority || isExpanded()) {
                    isExpanded = isGroupExpanded();
                }
            } else {
                expandable = mPrivateLayout.isContentExpandable();
                isExpanded = isExpanded();
            }
        }
        if (expandable) {
            if (isExpanded) {
                info.addAction(AccessibilityNodeInfo.AccessibilityAction.ACTION_COLLAPSE);
            } else {
                info.addAction(AccessibilityNodeInfo.AccessibilityAction.ACTION_EXPAND);
            }
        }
    }

    @Override
    public boolean performAccessibilityActionInternal(int action, Bundle arguments) {
        if (super.performAccessibilityActionInternal(action, arguments)) {
            return true;
        }
        switch (action) {
            case AccessibilityNodeInfo.ACTION_DISMISS:
                NotificationStackScrollLayout.performDismiss(this, mGroupManager,
                        true /* fromAccessibility */);
                return true;
            case AccessibilityNodeInfo.ACTION_COLLAPSE:
            case AccessibilityNodeInfo.ACTION_EXPAND:
                mExpandClickListener.onClick(this);
                return true;
        }
        return false;
    }

    public boolean shouldRefocusOnDismiss() {
        return mRefocusOnDismiss || isAccessibilityFocused();
    }

    public interface OnExpandClickListener {
        void onExpandClicked(NotificationData.Entry clickedEntry, boolean nowExpanded);
    }

    @Override
    public ExpandableViewState createNewViewState(StackScrollState stackScrollState) {
        return new NotificationViewState(stackScrollState);
    }

    @Override
    public boolean isAboveShelf() {
        return !isOnKeyguard()
                && (mIsPinned || mHeadsupDisappearRunning || (mIsHeadsUp && mAboveShelf));
    }

    public void setShowAmbient(boolean showAmbient) {
        if (showAmbient != mShowAmbient) {
            mShowAmbient = showAmbient;
            if (mChildrenContainer != null) {
                mChildrenContainer.notifyShowAmbientChanged();
            }
            notifyHeightChanged(false /* needsAnimation */);
        }
    }

    public boolean isShowingAmbient() {
        return mShowAmbient;
    }

    public void setAboveShelf(boolean aboveShelf) {
        mAboveShelf = aboveShelf;
    }

    public static class NotificationViewState extends ExpandableViewState {

        private final StackScrollState mOverallState;


        private NotificationViewState(StackScrollState stackScrollState) {
            mOverallState = stackScrollState;
        }

        @Override
        public void applyToView(View view) {
            super.applyToView(view);
            if (view instanceof ExpandableNotificationRow) {
                ExpandableNotificationRow row = (ExpandableNotificationRow) view;
                row.applyChildrenState(mOverallState);
            }
        }

        @Override
        protected void onYTranslationAnimationFinished(View view) {
            super.onYTranslationAnimationFinished(view);
            if (view instanceof ExpandableNotificationRow) {
                ExpandableNotificationRow row = (ExpandableNotificationRow) view;
                if (row.isHeadsUpAnimatingAway()) {
                    row.setHeadsUpAnimatingAway(false);
                }
            }
        }

        @Override
        public void animateTo(View child, AnimationProperties properties) {
            super.animateTo(child, properties);
            if (child instanceof ExpandableNotificationRow) {
                ExpandableNotificationRow row = (ExpandableNotificationRow) child;
                row.startChildAnimation(mOverallState, properties);
            }
        }
    }

    @VisibleForTesting
    protected void setChildrenContainer(NotificationChildrenContainer childrenContainer) {
        mChildrenContainer = childrenContainer;
    }
}