commit 53c6e2986ab9ee0358397653af555e05a6f83f6e
author Lucas Dupin <dupin@google.com> Thu Jul 12 18:42:53 2018 -0700
committer Lucas Dupin <dupin@google.com> Thu Jul 12 18:42:53 2018 -0700
tree 967b262dd20a39e2e7b87092752c56779edaf67a
parent ef6a5bf7559b984090be347c221d382992e432bf

Activate night mode when battery saver

This as originally in SysUI but UiModeManagerService is cleaner way
of doing it. This way SysUI won't have to keep track of user preferences
or override user settings.

Test: manually toggle battery saver and observe QS
Bug: 104205224
Change-Id: Ic0d24e36eec2ad3b66b32960bfc5e659470044b1

services/core/java/com/android/server/UiModeManagerService.java

diff --git a/services/core/java/com/android/server/UiModeManagerService.java b/services/core/java/com/android/server/UiModeManagerService.java
index c29fc7f..cb03255 100644
--- a/services/core/java/com/android/server/UiModeManagerService.java
+++ b/services/core/java/com/android/server/UiModeManagerService.java
@@ -82,6 +82,7 @@
 
     private boolean mCarModeEnabled = false;
     private boolean mCharging = false;
+    private boolean mPowerSave = false;
     private int mDefaultUiModeType;
     private boolean mCarModeKeepsScreenOn;
     private boolean mDeskModeKeepsScreenOn;
@@ -160,7 +161,14 @@
     private final BroadcastReceiver mBatteryReceiver = new BroadcastReceiver() {
         @Override
         public void onReceive(Context context, Intent intent) {
-            mCharging = (intent.getIntExtra(BatteryManager.EXTRA_PLUGGED, 0) != 0);
+            switch (intent.getAction()) {
+                case Intent.ACTION_BATTERY_CHANGED:
+                    mCharging = intent.getIntExtra(BatteryManager.EXTRA_PLUGGED, 0) != 0;
+                    break;
+                case PowerManager.ACTION_POWER_SAVE_MODE_CHANGING:
+                    mPowerSave = intent.getBooleanExtra(PowerManager.EXTRA_POWER_SAVE_MODE, false);
+                    break;
+            }
             synchronized (mLock) {
                 if (mSystemReady) {
                     updateLocked(0, 0);
@@ -203,8 +211,9 @@
 
         context.registerReceiver(mDockModeReceiver,
                 new IntentFilter(Intent.ACTION_DOCK_EVENT));
-        context.registerReceiver(mBatteryReceiver,
-                new IntentFilter(Intent.ACTION_BATTERY_CHANGED));
+        IntentFilter batteryFilter = new IntentFilter(Intent.ACTION_BATTERY_CHANGED);
+        batteryFilter.addAction(PowerManager.ACTION_POWER_SAVE_MODE_CHANGING);
+        context.registerReceiver(mBatteryReceiver, batteryFilter);
 
         mConfiguration.setToDefaults();
 
@@ -457,6 +466,11 @@
             uiMode |= mNightMode << 4;
         }
 
+        if (mPowerSave && !mNightModeLocked) {
+            uiMode &= ~Configuration.UI_MODE_NIGHT_NO;
+            uiMode |= Configuration.UI_MODE_NIGHT_YES;
+        }
+
         if (LOG) {
             Slog.d(TAG,
                 "updateConfigurationLocked: mDockState=" + mDockState