Limit searchability of combined biometric Settings

Ensures that the combined biometric settings pages shown in Settings are
not indexed for search on devices without multiple biometric sensors.

Test: Manually tested on devices with and without multiple biometrics

Fixes: 193704179
Change-Id: I007b5d2a0191cb61454e5ae0f411d4c594536fc5

src/com/android/settings/biometrics/combination/CombinedBiometricProfileSettings.java

@@ -61,5 +61,6 @@ public class CombinedBiometricProfileSettings extends BiometricsSettingsBase {
     }
 
     public static final BaseSearchIndexProvider SEARCH_INDEX_DATA_PROVIDER =
-            new BaseSearchIndexProvider(R.xml.security_settings_combined_biometric_profile);
+            new CombinedBiometricSearchIndexProvider(
+                    R.xml.security_settings_combined_biometric_profile);
 }

src/com/android/settings/biometrics/combination/CombinedBiometricSearchIndexProvider.java

@@ -0,0 +1,38 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.settings.biometrics.combination;
+
+import android.content.Context;
+import android.content.pm.PackageManager;
+
+import com.android.settings.search.BaseSearchIndexProvider;
+
+/**
+ * Settings search index provider for the multi-biometric settings pages.
+ */
+public class CombinedBiometricSearchIndexProvider extends BaseSearchIndexProvider {
+    public CombinedBiometricSearchIndexProvider(int xmlRes) {
+        super(xmlRes);
+    }
+
+    @Override
+    protected boolean isPageSearchEnabled(Context context) {
+        final PackageManager pm = context.getPackageManager();
+        return pm.hasSystemFeature(PackageManager.FEATURE_FACE)
+                && pm.hasSystemFeature(PackageManager.FEATURE_FINGERPRINT);
+    }
+}

src/com/android/settings/biometrics/combination/CombinedBiometricSettings.java

@@ -64,5 +64,5 @@ public class CombinedBiometricSettings extends BiometricsSettingsBase {
     }
 
     public static final BaseSearchIndexProvider SEARCH_INDEX_DATA_PROVIDER =
-            new BaseSearchIndexProvider(R.xml.security_settings_combined_biometric);
+            new CombinedBiometricSearchIndexProvider(R.xml.security_settings_combined_biometric);
 }