Alarm: add support for power off alarm

When phone is in Power-Off Alarm boot mode:
    1. At the correct booting place to trigger the Power-Off Alarm UI
    2. At the Power-Off Alarm alert UI, don't dispatch related physical
            key, such as home, search, etc

Change-Id: I60ede3bde21d26eafb0610946f6d8bf884c85ddb

5 files changed, 47 insertions, 1 deletions

diff --git a/core/java/android/app/AlarmManager.java b/core/java/android/app/AlarmManager.java
index af7a912..b0afe7c 100644
--- a/core/java/android/app/AlarmManager.java
+++ b/core/java/android/app/AlarmManager.java
@@ -104,8 +104,9 @@ public class AlarmManager {
      * Alarm time in {@link System#currentTimeMillis System.currentTimeMillis()}
      * (wall clock time in UTC), which will wake up the device when
      * it goes off. And it will power on the devices when it shuts down.
+     * Set as 5 to make it be compatible with android_alarm_type.
      */
-    public static final int RTC_POWEROFF_WAKEUP = 4;
+    public static final int RTC_POWEROFF_WAKEUP = 5;
 
     /**
      * Broadcast Action: Sent after the value returned by
diff --git a/core/java/android/provider/Settings.java b/core/java/android/provider/Settings.java
index e677b3e..8182855 100644
--- a/core/java/android/provider/Settings.java
+++ b/core/java/android/provider/Settings.java
@@ -2865,6 +2865,15 @@ public final class Settings {
         private static final Validator TEXT_AUTO_CAPS_VALIDATOR = sBooleanValidator;
 
         /**
+         * Setting to show if system is in power off alarm mode. 1 = true, 0 = false
+         * @hide
+         */
+        public static final String POWER_OFF_ALARM_MODE = "power_off_alarm_mode";
+
+        /** Validator for POWER_OFF_ALARM_MODE */
+        private static final Validator POWER_OFF_ALARM_MODE_VALIDATOR = sBooleanValidator;
+
+        /**
          * Setting to enable Auto Punctuate in text editors. 1 = On, 0 = Off. This
          * feature converts two spaces to a "." and space.
          */
@@ -3579,6 +3588,7 @@ public final class Settings {
             PUBLIC_SETTINGS.add(SOUND_EFFECTS_ENABLED);
             PUBLIC_SETTINGS.add(HAPTIC_FEEDBACK_ENABLED);
             PUBLIC_SETTINGS.add(SHOW_WEB_SUGGESTIONS);
+            PUBLIC_SETTINGS.add(POWER_OFF_ALARM_MODE);
         }
 
         /**
@@ -3704,6 +3714,7 @@ public final class Settings {
             VALIDATORS.put(WIFI_STATIC_NETMASK, WIFI_STATIC_NETMASK_VALIDATOR);
             VALIDATORS.put(WIFI_STATIC_DNS1, WIFI_STATIC_DNS1_VALIDATOR);
             VALIDATORS.put(WIFI_STATIC_DNS2, WIFI_STATIC_DNS2_VALIDATOR);
+            VALIDATORS.put(POWER_OFF_ALARM_MODE, POWER_OFF_ALARM_MODE_VALIDATOR);
         }
 
         /**
diff --git a/services/core/java/com/android/server/am/ActivityManagerService.java b/services/core/java/com/android/server/am/ActivityManagerService.java
index 8872781..1bf7931 100755
--- a/services/core/java/com/android/server/am/ActivityManagerService.java
+++ b/services/core/java/com/android/server/am/ActivityManagerService.java
@@ -300,6 +300,11 @@ public final class ActivityManagerService extends ActivityManagerNative
     private static final String TAG_VISIBILITY = TAG + POSTFIX_VISIBILITY;
     private static final String TAG_VISIBLE_BEHIND = TAG + POSTFIX_VISIBLE_BEHIND;
 
+    private static final String ACTION_POWER_OFF_ALARM =
+            "org.codeaurora.alarm.action.POWER_OFF_ALARM";
+
+    private static final String POWER_OFF_ALARM = "powerOffAlarm";
+
     /** Control over CPU and battery monitoring */
     // write battery stats every 30 minutes.
     static final long BATTERY_STATS_TIME = 30 * 60 * 1000;
@@ -3608,6 +3613,15 @@ public final class ActivityManagerService extends ActivityManagerNative
         return true;
     }
 
+    /**
+     * If system is power off alarm boot mode, we need to start alarm UI.
+     */
+    void startAlarmActivityLocked() {
+        Intent intent = new Intent(ACTION_POWER_OFF_ALARM);
+        intent.addFlags(Intent.FLAG_RECEIVER_FOREGROUND);
+        mContext.startActivityAsUser(intent, UserHandle.CURRENT);
+    }
+
     private ActivityInfo resolveActivityInfo(Intent intent, int flags, int userId) {
         ActivityInfo ai = null;
         ComponentName comp = intent.getComponent();
@@ -12062,6 +12076,12 @@ public final class ActivityManagerService extends ActivityManagerNative
             mBooting = true;
             startHomeActivityLocked(mCurrentUserId, "systemReady");
 
+            // start the power off alarm by boot mode
+            boolean isAlarmBoot = SystemProperties.getBoolean("ro.alarm_boot", false);
+            if (isAlarmBoot) {
+                startAlarmActivityLocked();
+            }
+
             try {
                 if (AppGlobals.getPackageManager().hasSystemUidErrors()) {
                     Slog.e(TAG, "UIDs on the system are inconsistent, you need to wipe your"
diff --git a/services/core/java/com/android/server/policy/PhoneWindowManager.java b/services/core/java/com/android/server/policy/PhoneWindowManager.java
index 1cb337b..e86b5a5 100644
--- a/services/core/java/com/android/server/policy/PhoneWindowManager.java
+++ b/services/core/java/com/android/server/policy/PhoneWindowManager.java
@@ -3137,6 +3137,19 @@ public class PhoneWindowManager implements WindowManagerPolicy {
                     + " canceled=" + canceled);
         }
 
+        // If the boot mode is power off alarm, we should not dispatch the several physical keys
+        // in power off alarm UI to avoid pausing power off alarm UI.
+        int isPowerOffAlarmMode = Settings.System.getInt(mContext.getContentResolver(),
+                Settings.System.POWER_OFF_ALARM_MODE, 0);
+        if (DEBUG_INPUT) { Log.d(TAG, "intercept Dispatching isPowerOffAlarmMode = " +
+                isPowerOffAlarmMode); }
+
+        if (isPowerOffAlarmMode == 1 && (keyCode == KeyEvent.KEYCODE_HOME
+                || keyCode == KeyEvent.KEYCODE_SEARCH
+                || keyCode == KeyEvent.KEYCODE_MENU)) {
+            return -1;  // ignore the physical key here
+        }
+
         // If we think we might have a volume down & power key chord on the way
         // but we're not sure, then tell the dispatcher to wait a little while and
         // try again later before dispatching.
diff --git a/services/core/jni/com_android_server_AlarmManagerService.cpp b/services/core/jni/com_android_server_AlarmManagerService.cpp
index 4025988..5d1e7af 100644
--- a/services/core/jni/com_android_server_AlarmManagerService.cpp
+++ b/services/core/jni/com_android_server_AlarmManagerService.cpp
@@ -55,6 +55,7 @@ static const clockid_t android_alarm_to_clockid[N_ANDROID_TIMERFDS] = {
     CLOCK_BOOTTIME_ALARM,
     CLOCK_BOOTTIME,
     CLOCK_MONOTONIC,
+    CLOCK_POWEROFF_ALARM,
     CLOCK_REALTIME,
 };
 /* to match the legacy alarm driver implementation, we need an extra