Support input device lights manager feature in frameworks.

Add lights manager support to input frameworks.

Bug: 161633625
Test: atest LightsManagerTest, atest InputDeviceLightsManagerTest
Change-Id: Ic6c701cad84f277325583c77195592d96d9296b8

1 files changed, 19 insertions, 0 deletions

diff --git a/core/java/android/view/InputDevice.java b/core/java/android/view/InputDevice.java
index 59e493191711..fafb885c58e0 100644
--- a/core/java/android/view/InputDevice.java
+++ b/core/java/android/view/InputDevice.java
@@ -26,6 +26,7 @@ import android.hardware.Battery;
 import android.hardware.SensorManager;
 import android.hardware.input.InputDeviceIdentifier;
 import android.hardware.input.InputManager;
+import android.hardware.lights.LightsManager;
 import android.os.Build;
 import android.os.NullVibrator;
 import android.os.Parcel;
@@ -89,6 +90,9 @@ public final class InputDevice implements Parcelable {
     @GuardedBy("mMotionRanges")
     private Battery mBattery;
 
+    @GuardedBy("mMotionRanges")
+    private LightsManager mLightsManager;
+
     /**
      * A mask for input source classes.
      *
@@ -859,6 +863,21 @@ public final class InputDevice implements Parcelable {
     }
 
     /**
+     * Gets the lights manager associated with the device, if there is one.
+     * Even if the device does not have lights, the result is never null.
+     * Use {@link LightsManager#getLights} to determine whether any lights is
+     * present.
+     *
+     * @return The lights manager associated with the device, never null.
+     */
+    public @NonNull LightsManager getLightsManager() {
+        if (mLightsManager == null) {
+            mLightsManager = InputManager.getInstance().getInputDeviceLightsManager(mId);
+        }
+        return mLightsManager;
+    }
+
+    /**
      * Gets the sensor manager service associated with the input device.
      * Even if the device does not have a sensor, the result is never null.
      * Use {@link SensorManager#getSensorList} to get a full list of all supported sensors.