Combined biometric settings implementation

There will be multiple biometrics authentications existing at the same
time, so we added a new page for multiple biometrics to control
biometrics settings.

Bug: 183449119
Test: manual test
Change-Id: I359082caf771e07dfd5b24973cb8a3cf372c1b30

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

@@ -0,0 +1,71 @@
+/*
+ * 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 com.android.settings.R;
+import com.android.settings.Settings;
+import com.android.settings.Utils;
+import com.android.settings.biometrics.BiometricStatusPreferenceController;
+
+/**
+ * Preference controller for biometrics settings page controlling the ability to unlock the phone
+ * with face and fingerprint.
+ */
+public class CombinedBiometricStatusPreferenceController extends
+        BiometricStatusPreferenceController {
+    private static final String KEY_BIOMETRIC_SETTINGS = "biometric_settings";
+
+
+    public CombinedBiometricStatusPreferenceController(Context context) {
+        this(context, KEY_BIOMETRIC_SETTINGS);
+    }
+
+    public CombinedBiometricStatusPreferenceController(Context context, String key) {
+        super(context, key);
+    }
+
+    @Override
+    protected boolean isDeviceSupported() {
+        return Utils.hasFingerprintHardware(mContext) && Utils.hasFaceHardware(mContext);
+    }
+
+    @Override
+    protected boolean hasEnrolledBiometrics() {
+        return false;
+    }
+
+    @Override
+    protected String getSummaryTextEnrolled() {
+        return mContext.getString(R.string.security_settings_biometric_preference_summary);
+    }
+
+    @Override
+    protected String getSummaryTextNoneEnrolled() {
+        return mContext.getString(R.string.security_settings_biometric_preference_summary);
+    }
+
+    @Override
+    protected String getSettingsClassName() {
+        return Settings.CombinedBiometricSettingsActivity.class.getName();
+    }
+
+    @Override
+    protected String getEnrollClassName() {
+        return Settings.CombinedBiometricSettingsActivity.class.getName();
+    }
+}