Update text when Active Unlock is enabled.

Update the security summary, intro, and unlock your phone summary when
Active Unlock is enabled and enrolled on the device.

Test: make RunSettingsRoboTests
Test: manually flip flags, confirm combined page has updated strings
Bug: 264812018
Change-Id: I2843e9f3aa0f38a9f2ebb18d60fed6293f9ce36e

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

@@ -17,8 +17,15 @@ package com.android.settings.biometrics.combination;
 
 import android.app.settings.SettingsEnums;
 import android.content.Context;
+import android.os.Bundle;
+
+import androidx.annotation.Nullable;
+import androidx.preference.Preference;
 
 import com.android.settings.R;
+import com.android.settings.biometrics.activeunlock.ActiveUnlockContentListener.OnContentChangedListener;
+import com.android.settings.biometrics.activeunlock.ActiveUnlockDeviceNameListener;
+import com.android.settings.biometrics.activeunlock.ActiveUnlockStatusUtils;
 import com.android.settings.search.BaseSearchIndexProvider;
 import com.android.settingslib.search.SearchIndexable;
 
@@ -32,6 +39,10 @@ public class CombinedBiometricSettings extends BiometricsSettingsBase {
     private static final String KEY_FINGERPRINT_SETTINGS = "biometric_fingerprint_settings";
     private static final String KEY_UNLOCK_PHONE = "biometric_settings_biometric_keyguard";
     private static final String KEY_USE_IN_APPS = "biometric_settings_biometric_app";
+    private static final String KEY_INTRO_PREFERENCE = "biometric_intro";
+
+    private ActiveUnlockStatusUtils mActiveUnlockStatusUtils;
+    @Nullable private ActiveUnlockDeviceNameListener mActiveUnlockDeviceNameListener;
 
     @Override
     public void onAttach(Context context) {
@@ -40,6 +51,41 @@ public class CombinedBiometricSettings extends BiometricsSettingsBase {
         use(BiometricSettingsAppPreferenceController.class).setUserId(mUserId);
     }
 
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        mActiveUnlockStatusUtils = new ActiveUnlockStatusUtils(getActivity());
+        if (mActiveUnlockStatusUtils.isAvailable()) {
+            updateUiForActiveUnlock();
+        }
+    }
+
+    private void updateUiForActiveUnlock() {
+        OnContentChangedListener listener = new OnContentChangedListener() {
+            @Override
+            public void onContentChanged(String newValue) {
+                updateUnlockPhonePreferenceSummary();
+            }
+        };
+
+        mActiveUnlockDeviceNameListener =
+                new ActiveUnlockDeviceNameListener(getActivity(), listener);
+        mActiveUnlockDeviceNameListener.subscribe();
+        final Preference introPreference = findPreference(KEY_INTRO_PREFERENCE);
+        if (introPreference != null) {
+            introPreference.setTitle(mActiveUnlockStatusUtils.getIntroForActiveUnlock());
+        }
+        getActivity().setTitle(mActiveUnlockStatusUtils.getTitleForActiveUnlock());
+    }
+
+    @Override
+    public void onDestroy() {
+        if (mActiveUnlockDeviceNameListener != null) {
+            mActiveUnlockDeviceNameListener.unsubscribe();
+        }
+        super.onDestroy();
+    }
+
     @Override
     protected int getPreferenceScreenResId() {
         return R.xml.security_settings_combined_biometric;
@@ -75,6 +121,16 @@ public class CombinedBiometricSettings extends BiometricsSettingsBase {
         return SettingsEnums.COMBINED_BIOMETRIC;
     }
 
+    @Override
+    protected String getUseAnyBiometricSummary() {
+        // either Active Unlock is not enabled or no device is enrolled.
+        if (mActiveUnlockDeviceNameListener == null
+                || !mActiveUnlockDeviceNameListener.hasEnrolled()) {
+            return super.getUseAnyBiometricSummary();
+        }
+        return mActiveUnlockStatusUtils.getUnlockDeviceSummaryForActiveUnlock();
+    }
+
     public static final BaseSearchIndexProvider SEARCH_INDEX_DATA_PROVIDER =
             new CombinedBiometricSearchIndexProvider(R.xml.security_settings_combined_biometric);
 }