From afae4bd437563c3997740ff6a537108409f7884c Mon Sep 17 00:00:00 2001
From: Jason Monk <jmonk@google.com>
Date: Tue, 15 Dec 2015 14:20:06 -0500
Subject: [PATCH] Add internal power mode changed broadcast

This broadcast allows settings to be (rarely) be started by a power
change event.

Settings will have a conditional item informing the user of battery
saving mode, when they dismiss it, the item will not show up again
until after power saving mode has been exited and re-entered.
Settings will catch the exit of power saving mode by enabling a
receiver for this broadcast only when in this state.

Change-Id: I62385413e4b8b004d4e1e0e5ba250730848ba013
---
 core/java/android/os/PowerManager.java             |  8 +++++
 .../android/server/power/PowerManagerService.java  | 35 +++++++++++-----------
 2 files changed, 26 insertions(+), 17 deletions(-)

diff --git a/core/java/android/os/PowerManager.java b/core/java/android/os/PowerManager.java
index a0a006044751..120654fcf534 100644
--- a/core/java/android/os/PowerManager.java
+++ b/core/java/android/os/PowerManager.java
@@ -973,6 +973,14 @@ public final class PowerManager {
             = "android.os.action.POWER_SAVE_MODE_CHANGED";
 
     /**
+     * Intent that is broadcast when the state of {@link #isPowerSaveMode()} changes.
+     * @hide
+     */
+    @SdkConstant(SdkConstant.SdkConstantType.BROADCAST_INTENT_ACTION)
+    public static final String ACTION_POWER_SAVE_MODE_CHANGED_INTERNAL
+            = "android.os.action.POWER_SAVE_MODE_CHANGED_INTERNAL";
+
+    /**
      * Intent that is broadcast when the state of {@link #isDeviceIdleMode()} changes.
      * This broadcast is only sent to registered receivers.
      */
diff --git a/services/core/java/com/android/server/power/PowerManagerService.java b/services/core/java/com/android/server/power/PowerManagerService.java
index 6498dd941a32..290019c73ba4 100644
--- a/services/core/java/com/android/server/power/PowerManagerService.java
+++ b/services/core/java/com/android/server/power/PowerManagerService.java
@@ -16,21 +16,8 @@
 
 package com.android.server.power;
 
-import android.app.ActivityManager;
-import android.util.SparseIntArray;
-import com.android.internal.app.IAppOpsService;
-import com.android.internal.app.IBatteryStats;
-import com.android.internal.os.BackgroundThread;
-import com.android.server.EventLogTags;
-import com.android.server.ServiceThread;
-import com.android.server.SystemService;
-import com.android.server.am.BatteryStatsService;
-import com.android.server.lights.Light;
-import com.android.server.lights.LightsManager;
-import com.android.server.Watchdog;
-
 import android.Manifest;
-import android.app.AppOpsManager;
+import android.app.ActivityManager;
 import android.content.BroadcastReceiver;
 import android.content.ContentResolver;
 import android.content.Context;
@@ -65,22 +52,32 @@ import android.provider.Settings;
 import android.service.dreams.DreamManagerInternal;
 import android.util.EventLog;
 import android.util.Slog;
+import android.util.SparseIntArray;
 import android.util.TimeUtils;
 import android.view.Display;
 import android.view.WindowManagerPolicy;
+import com.android.internal.app.IAppOpsService;
+import com.android.internal.app.IBatteryStats;
+import com.android.internal.os.BackgroundThread;
+import com.android.server.EventLogTags;
+import com.android.server.ServiceThread;
+import com.android.server.SystemService;
+import com.android.server.Watchdog;
+import com.android.server.am.BatteryStatsService;
+import com.android.server.lights.Light;
+import com.android.server.lights.LightsManager;
+import libcore.util.Objects;
 
 import java.io.FileDescriptor;
 import java.io.PrintWriter;
 import java.util.ArrayList;
 import java.util.Arrays;
 
-import libcore.util.Objects;
-
 import static android.os.PowerManagerInternal.POWER_HINT_INTERACTION;
 import static android.os.PowerManagerInternal.WAKEFULNESS_ASLEEP;
 import static android.os.PowerManagerInternal.WAKEFULNESS_AWAKE;
-import static android.os.PowerManagerInternal.WAKEFULNESS_DREAMING;
 import static android.os.PowerManagerInternal.WAKEFULNESS_DOZING;
+import static android.os.PowerManagerInternal.WAKEFULNESS_DREAMING;
 
 /**
  * The power manager service is responsible for coordinating power management
@@ -771,6 +768,10 @@ public final class PowerManagerService extends SystemService
                     intent = new Intent(PowerManager.ACTION_POWER_SAVE_MODE_CHANGED);
                     intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY);
                     mContext.sendBroadcast(intent);
+                    // Send internal version that requires signature permission.
+                    mContext.sendBroadcastAsUser(new Intent(
+                            PowerManager.ACTION_POWER_SAVE_MODE_CHANGED_INTERNAL), UserHandle.ALL,
+                            Manifest.permission.DEVICE_POWER);
                 }
             });
         }
-- 
2.11.0