Change the logic to check car idleness

- Following the change of device idleness checking, car idleness
tracker considers screen on to determine idleness.
- The condition to get idle in automotive is 1) garage mode is started,
or 2) screen is off and idle is triggered.
- If idleness is forced or garage mode is running, it is considered idle
by car idleness tracker, regardless of screen on/off.

Bug: 182492612
Test: atest android.jobscheduler.cts.IdleConstraintTest
Change-Id: I15e78157c6b1539086e9b39354e5da51186c6535

apex/jobscheduler/service/java/com/android/server/job/controllers/idle/CarIdlenessTracker.java

@@ -30,6 +30,12 @@ import com.android.server.job.StateControllerProto;
 
 import java.io.PrintWriter;
 
+/**
+ * CarIdlenessTracker determines that a car is in idle state when 1) garage mode is started, or
+ * 2) screen is off and idle maintenance is triggered.
+ * If idleness is forced or garage mode is running, the car is considered idle regardless of screen
+ * on/off.
+ */
 public final class CarIdlenessTracker extends BroadcastReceiver implements IdlenessTracker {
     private static final String TAG = "JobScheduler.CarIdlenessTracker";
     private static final boolean DEBUG = JobSchedulerService.DEBUG
@@ -48,6 +54,7 @@ public final class CarIdlenessTracker extends BroadcastReceiver implements Idlen
     private boolean mIdle;
     private boolean mGarageModeOn;
     private boolean mForced;
+    private boolean mScreenOn;
     private IdlenessListener mIdleListener;
 
     public CarIdlenessTracker() {
@@ -56,6 +63,7 @@ public final class CarIdlenessTracker extends BroadcastReceiver implements Idlen
         mIdle = false;
         mGarageModeOn = false;
         mForced = false;
+        mScreenOn = true;
     }
 
     @Override
@@ -71,6 +79,7 @@ public final class CarIdlenessTracker extends BroadcastReceiver implements Idlen
 
         // Screen state
         filter.addAction(Intent.ACTION_SCREEN_ON);
+        filter.addAction(Intent.ACTION_SCREEN_OFF);
 
         // State of GarageMode
         filter.addAction(ACTION_GARAGE_MODE_ON);
@@ -88,6 +97,8 @@ public final class CarIdlenessTracker extends BroadcastReceiver implements Idlen
     public void dump(PrintWriter pw) {
         pw.print("  mIdle: "); pw.println(mIdle);
         pw.print("  mGarageModeOn: "); pw.println(mGarageModeOn);
+        pw.print("  mForced: "); pw.println(mForced);
+        pw.print("  mScreenOn: "); pw.println(mScreenOn);
     }
 
     @Override
@@ -121,6 +132,9 @@ public final class CarIdlenessTracker extends BroadcastReceiver implements Idlen
         } else if (action.equals(Intent.ACTION_SCREEN_ON)) {
             logIfDebug("Screen is on...");
             handleScreenOn();
+        } else if (action.equals(intent.ACTION_SCREEN_OFF)) {
+            logIfDebug("Screen is off...");
+            mScreenOn = false;
         } else if (action.equals(ACTION_GARAGE_MODE_ON)) {
             logIfDebug("GarageMode is on...");
             mGarageModeOn = true;
@@ -132,10 +146,10 @@ public final class CarIdlenessTracker extends BroadcastReceiver implements Idlen
         } else if (action.equals(ActivityManagerService.ACTION_TRIGGER_IDLE)) {
             if (!mGarageModeOn) {
                 logIfDebug("Idle trigger fired...");
-                triggerIdlenessOnce();
+                triggerIdleness();
             } else {
-                logIfDebug("TRIGGER_IDLE received but not changing state; idle="
-                        + mIdle + " screen=" + mGarageModeOn);
+                logIfDebug("TRIGGER_IDLE received but not changing state; mIdle="
+                        + mIdle + " mGarageModeOn=" + mGarageModeOn);
             }
         }
     }
@@ -158,20 +172,24 @@ public final class CarIdlenessTracker extends BroadcastReceiver implements Idlen
         }
     }
 
-    private void triggerIdlenessOnce() {
+    private void triggerIdleness() {
         // This is simply triggering idleness once until some constraint will switch it back off
         if (mIdle) {
             // Already in idle state. Nothing to do
             logIfDebug("Device is already idle");
-        } else {
+        } else if (!mScreenOn) {
             // Going idle once
-            logIfDebug("Device is going idle once");
+            logIfDebug("Device is going idle");
             mIdle = true;
             mIdleListener.reportNewIdleState(mIdle);
+        } else {
+            logIfDebug("TRIGGER_IDLE received but not changing state: mIdle = " + mIdle
+                    + ", mScreenOn = " + mScreenOn);
         }
     }
 
     private void handleScreenOn() {
+        mScreenOn = true;
         if (mForced || mGarageModeOn) {
             // Even though screen is on, the device remains idle
             logIfDebug("Screen is on, but device cannot exit idle");
@@ -179,6 +197,7 @@ public final class CarIdlenessTracker extends BroadcastReceiver implements Idlen
             // Exiting idle
             logIfDebug("Device is exiting idle");
             mIdle = false;
+            mIdleListener.reportNewIdleState(mIdle);
         } else {
             // Already in non-idle state. Nothing to do
             logIfDebug("Device is already non-idle");