From 75221649916422daac60e4f1bfb4638fbcae55a4 Mon Sep 17 00:00:00 2001
From: Brad Stenning <stenning@google.com>
Date: Wed, 13 Mar 2019 07:33:24 -0700
Subject: [PATCH] Restore the correct state of the statusbar, navbar, and
 keygaurd after an density change

Bug:117223261

Test: manual
Change-Id: Ie3b1a6471c640b20cdb73012d91b6113b66cd87b
(cherry picked from commit f3976bae672f587943c657c79c1d54aa0e89c450)
---
 .../android/systemui/statusbar/car/CarStatusBar.java | 12 ++++++++++++
 .../car/CarStatusBarKeyguardViewManager.java         |  8 ++++++++
 .../android/systemui/statusbar/phone/StatusBar.java  |  2 +-
 3 files changed, 21 insertions(+), 1 deletion(-)

diff --git a/packages/CarSystemUI/src/com/android/systemui/statusbar/car/CarStatusBar.java b/packages/CarSystemUI/src/com/android/systemui/statusbar/car/CarStatusBar.java
index bd0e0b846abfc..7569e61090b5b 100644
--- a/packages/CarSystemUI/src/com/android/systemui/statusbar/car/CarStatusBar.java
+++ b/packages/CarSystemUI/src/com/android/systemui/statusbar/car/CarStatusBar.java
@@ -161,6 +161,11 @@ public class CarStatusBar extends StatusBar implements
         }
 
         buildNavBarContent();
+        // If the UI was rebuilt (day/night change) while the keyguard was up we need to
+        // correctly respect that state.
+        if (mIsKeyguard) {
+            updateNavBarForKeyguardContent();
+        }
     }
 
     private void addTemperatureViewToController(View v) {
@@ -211,6 +216,13 @@ public class CarStatusBar extends StatusBar implements
     @Override
     public void showKeyguard() {
         super.showKeyguard();
+        updateNavBarForKeyguardContent();
+    }
+
+    /**
+     * Switch to the keyguard applicable content contained in the nav bars
+     */
+    private void updateNavBarForKeyguardContent() {
         getComponent(NotificationsUI.class).closeCarNotifications(0);
         if (mNavigationBarView != null) {
             mNavigationBarView.showKeyguardButtons();
diff --git a/packages/CarSystemUI/src/com/android/systemui/statusbar/car/CarStatusBarKeyguardViewManager.java b/packages/CarSystemUI/src/com/android/systemui/statusbar/car/CarStatusBarKeyguardViewManager.java
index 8c6b9b0107a4c..59218688ce7ab 100644
--- a/packages/CarSystemUI/src/com/android/systemui/statusbar/car/CarStatusBarKeyguardViewManager.java
+++ b/packages/CarSystemUI/src/com/android/systemui/statusbar/car/CarStatusBarKeyguardViewManager.java
@@ -64,4 +64,12 @@ public class CarStatusBarKeyguardViewManager extends StatusBarKeyguardViewManage
         CarStatusBar statusBar = (CarStatusBar) mStatusBar;
         statusBar.showUserSwitcher();
     }
+
+    /**
+     * Do nothing on this change.
+     * The base class hides the keyguard which for automotive we want to avoid b/c this would happen
+     * on a configuration change due to day/night (headlight state).
+     */
+    @Override
+    public void onDensityOrFontScaleChanged() {  }
 }
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/StatusBar.java b/packages/SystemUI/src/com/android/systemui/statusbar/phone/StatusBar.java
index d18b4190400ac..1dedb9ed6e2bb 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/StatusBar.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/StatusBar.java
@@ -537,7 +537,7 @@ public class StatusBar extends SystemUI implements DemoMode,
     private BatteryController mBatteryController;
     protected boolean mPanelExpanded;
     private UiModeManager mUiModeManager;
-    private boolean mIsKeyguard;
+    protected boolean mIsKeyguard;
     private LogMaker mStatusBarStateLog;
     protected NotificationIconAreaController mNotificationIconAreaController;
     @Nullable private View mAmbientIndicationContainer;