From 3b6a3ecb25e6c7be2cea29f4a3c9f0a2aa2925aa Mon Sep 17 00:00:00 2001
From: Jay Aliomer <aaliomer@google.com>
Date: Thu, 24 Jun 2021 12:16:15 -0400
Subject: [PATCH] Notification footer shows when there are zero notifications

Fixes: 191960604
Test: visual
Change-Id: Ib4b41890b6a0eb7e9b445b64c30b500eebc1a52f
---
 .../statusbar/notification/row/FooterView.java    |  9 +++++++++
 .../notification/stack/StackScrollAlgorithm.java  | 15 +++++++++------
 2 files changed, 18 insertions(+), 6 deletions(-)

diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/notification/row/FooterView.java b/packages/SystemUI/src/com/android/systemui/statusbar/notification/row/FooterView.java
index 8e24890c88121..86c90c7bcb2eb 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/notification/row/FooterView.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/notification/row/FooterView.java
@@ -25,6 +25,7 @@ import android.view.View;
 
 import com.android.systemui.R;
 import com.android.systemui.statusbar.notification.stack.ExpandableViewState;
+import com.android.systemui.statusbar.notification.stack.ViewState;
 
 public class FooterView extends StackScrollerDecorView {
     private final int mClearAllTopPadding;
@@ -121,6 +122,14 @@ public class FooterView extends StackScrollerDecorView {
          */
         public boolean hideContent;
 
+        @Override
+        public void copyFrom(ViewState viewState) {
+            super.copyFrom(viewState);
+            if (viewState instanceof FooterViewState) {
+                hideContent = ((FooterViewState) viewState).hideContent;
+            }
+        }
+
         @Override
         public void applyToView(View view) {
             super.applyToView(view);
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/notification/stack/StackScrollAlgorithm.java b/packages/SystemUI/src/com/android/systemui/statusbar/notification/stack/StackScrollAlgorithm.java
index add6fda4f8b98..3fc8b8d9aef11 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/notification/stack/StackScrollAlgorithm.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/notification/stack/StackScrollAlgorithm.java
@@ -399,12 +399,15 @@ public class StackScrollAlgorithm {
         if (view instanceof FooterView) {
             final boolean shadeClosed = !ambientState.isShadeExpanded();
             final boolean isShelfShowing = algorithmState.firstViewInShelf != null;
-
-            final float footerEnd = algorithmState.mCurrentExpandedYPosition
-                    + view.getIntrinsicHeight();
-            final boolean noSpaceForFooter = footerEnd > ambientState.getStackEndHeight();
-            ((FooterView.FooterViewState) viewState).hideContent =
-                    shadeClosed || isShelfShowing || noSpaceForFooter;
+            if (shadeClosed) {
+                viewState.hidden = true;
+            } else {
+                final float footerEnd = algorithmState.mCurrentExpandedYPosition
+                        + view.getIntrinsicHeight();
+                final boolean noSpaceForFooter = footerEnd > ambientState.getStackEndHeight();
+                ((FooterView.FooterViewState) viewState).hideContent =
+                        isShelfShowing || noSpaceForFooter;
+            }
         } else {
             if (view != ambientState.getTrackedHeadsUpRow()) {
                 if (ambientState.isExpansionChanging()) {