Add support for device state based auto-rotation preferences in Settings.

- Creates new preferences that are shown when device-state rotation
  is supported.
- Hides standard preferences when device-state rotation is supported.
- Controllers/Preferences for individual folded/unfolded rotation
  settings are created and added programatically based on the settable
  device states available.

Test: Manually + Unit tests
Bug: 195757480
Change-Id: I16f50fd3664756b363c7eb79e5c35eb0d3b6df17

tests/robotests/src/com/android/settings/display/AutoRotatePreferenceControllerTest.java

@@ -30,6 +30,7 @@ import android.provider.Settings;
 
 import androidx.preference.SwitchPreference;
 
+import com.android.internal.R;
 import com.android.internal.view.RotationPolicy;
 import com.android.settings.core.BasePreferenceController;
 import com.android.settings.testutils.FakeFeatureFactory;
@@ -64,6 +65,7 @@ public class AutoRotatePreferenceControllerTest {
         mPreference = new SwitchPreference(RuntimeEnvironment.application);
         when(mContext.getPackageManager()).thenReturn(mPackageManager);
         when(mContext.getContentResolver()).thenReturn(mContentResolver);
+        disableDeviceStateRotation();
 
         mController = new AutoRotatePreferenceController(mContext, "auto_rotate");
     }
@@ -111,6 +113,26 @@ public class AutoRotatePreferenceControllerTest {
                 .UNSUPPORTED_ON_DEVICE);
     }
 
+    @Test
+    public void getAvailabilityStatus_deviceRotationDisabled_returnsAvailable() {
+        enableAutoRotationPreference();
+        disableDeviceStateRotation();
+
+        int availability = mController.getAvailabilityStatus();
+
+        assertThat(availability).isEqualTo(BasePreferenceController.AVAILABLE);
+    }
+
+    @Test
+    public void getAvailabilityStatus_deviceRotationEnabled_returnsUnsupported() {
+        enableAutoRotationPreference();
+        enableDeviceStateRotation();
+
+        int availability = mController.getAvailabilityStatus();
+
+        assertThat(availability).isEqualTo(BasePreferenceController.UNSUPPORTED_ON_DEVICE);
+    }
+
     @Test
     public void testIsCheck() {
         assertThat(mController.isChecked()).isFalse();
@@ -180,4 +202,15 @@ public class AutoRotatePreferenceControllerTest {
         Settings.System.putIntForUser(mContentResolver,
                 Settings.System.ACCELEROMETER_ROTATION, 0, UserHandle.USER_CURRENT);
     }
+
+    private void enableDeviceStateRotation() {
+        when(mContext.getResources().getStringArray(
+                R.array.config_perDeviceStateRotationLockDefaults)).thenReturn(
+                new String[]{"0:0", "1:1", "2:2"});
+    }
+
+    private void disableDeviceStateRotation() {
+        when(mContext.getResources().getStringArray(
+                R.array.config_perDeviceStateRotationLockDefaults)).thenReturn(new String[]{});
+    }
 }