Update Fingerprint adding button with expressive design

Flag: EXEMPT flag by System prop (SettingsThemeHelper.isExpressiveTheme)

Bug: 388260897

Test: build and manually check the UI and its behaviors.
Change-Id: I1c6d859f78305d0f14476e12a5bb4e1b0258d06e

res/xml/security_settings_fingerprint.xml

@@ -29,6 +29,14 @@
         android:title="@string/fingerprint_add_title"
         android:icon="@drawable/ic_add_24dp"/>
 
+    <com.android.settingslib.widget.ButtonPreference
+        android:key="key_fingerprint_add_expressive"
+        android:title="@string/add"
+        settings:buttonPreferenceSize="large"
+        settings:buttonPreferenceType="tonal"
+        android:visibility="gone"
+        android:icon="@drawable/ic_add_24dp"/>
+
     <PreferenceCategory
         android:key="security_settings_fingerprint_unlock_category"
         android:title="@string/security_settings_fingerprint_settings_preferences_category"

src/com/android/settings/biometrics/fingerprint/FingerprintSettings.java

@@ -99,7 +99,9 @@ import com.android.settingslib.RestrictedSwitchPreference;
 import com.android.settingslib.core.AbstractPreferenceController;
 import com.android.settingslib.search.SearchIndexable;
 import com.android.settingslib.transition.SettingsTransitionHelper;
+import com.android.settingslib.widget.ButtonPreference;
 import com.android.settingslib.widget.FooterPreference;
+import com.android.settingslib.widget.SettingsThemeHelper;
 import com.android.settingslib.widget.TwoTargetPreference;
 
 import com.google.android.setupdesign.util.DeviceHelper;
@@ -250,6 +252,8 @@ public class FingerprintSettings extends SubSettings {
                 "key_fingerprint_check_enrolled";
         @VisibleForTesting
         static final String KEY_FINGERPRINT_ADD = "key_fingerprint_add";
+        @VisibleForTesting
+        static final String KEY_FINGERPRINT_ADD_EXPRESSIVE = "key_fingerprint_add_expressive";
         private static final String KEY_FINGERPRINT_ENABLE_KEYGUARD_TOGGLE =
                 "fingerprint_enable_keyguard_toggle";
         private static final String KEY_LAUNCHED_CONFIRM = "launched_confirm";
@@ -325,6 +329,8 @@ public class FingerprintSettings extends SubSettings {
         @Nullable
         private UdfpsEnrollCalibrator mCalibrator;
 
+        private boolean mIsExpressiveThemeStyle;
+
         FingerprintAuthenticateSidecar.Listener mAuthenticateListener =
                 new FingerprintAuthenticateSidecar.Listener() {
                     @Override
@@ -471,6 +477,7 @@ public class FingerprintSettings extends SubSettings {
         @Override
         public void onCreate(Bundle savedInstanceState) {
             super.onCreate(savedInstanceState);
+            mIsExpressiveThemeStyle = SettingsThemeHelper.isExpressiveTheme(getPrefContext());
 
             Activity activity = getActivity();
             mFingerprintManager = Utils.getFingerprintManagerOrNull(activity);
@@ -679,7 +686,8 @@ public class FingerprintSettings extends SubSettings {
                 mFingerprintsEnrolledCategory.removeAll();
             }
 
-            String keyToReturn = KEY_FINGERPRINT_ADD;
+            String keyToReturn = mIsExpressiveThemeStyle
+                    ? KEY_FINGERPRINT_ADD_EXPRESSIVE : KEY_FINGERPRINT_ADD;
             final List<Fingerprint> items = mFingerprintManager.getEnrolledFingerprints(mUserId);
             final int fingerprintCount = items.size();
             for (int i = 0; i < fingerprintCount; i++) {
@@ -715,13 +723,30 @@ public class FingerprintSettings extends SubSettings {
                 mFingerprintsEnrolledCategory.addPreference(pref);
                 pref.setOnPreferenceChangeListener(this);
             }
-            mAddFingerprintPreference = findPreference(KEY_FINGERPRINT_ADD);
+            mAddFingerprintPreference = findPreference(mIsExpressiveThemeStyle
+                    ? KEY_FINGERPRINT_ADD_EXPRESSIVE : KEY_FINGERPRINT_ADD);
             setupAddFingerprintPreference();
             return keyToReturn;
         }
 
         private void setupAddFingerprintPreference() {
             mAddFingerprintPreference.setOnPreferenceChangeListener(this);
+            if (mIsExpressiveThemeStyle
+                    && (mAddFingerprintPreference instanceof ButtonPreference)) {
+                ((ButtonPreference) mAddFingerprintPreference).setOnClickListener(view -> {
+                    mIsEnrolling = true;
+                    Intent intent = new Intent();
+                    intent.setClassName(SETTINGS_PACKAGE_NAME,
+                            FingerprintEnroll.AddAdditionalFingerprint.class.getName());
+                    intent.putExtra(Intent.EXTRA_USER_ID, mUserId);
+                    intent.putExtra(ChooseLockSettingsHelper.EXTRA_KEY_CHALLENGE_TOKEN, mToken);
+                    if (mCalibrator != null) {
+                        intent.putExtras(mCalibrator.getExtrasForNextIntent());
+                    }
+                    startActivityForResult(intent, ADD_FINGERPRINT_REQUEST);
+                });
+            }
+
             updateAddPreference();
         }
 
@@ -803,12 +828,15 @@ public class FingerprintSettings extends SubSettings {
                 return; // Activity went away
             }
 
-            mAddFingerprintPreference = findPreference(KEY_FINGERPRINT_ADD);
+            mAddFingerprintPreference = findPreference(
+                    mIsExpressiveThemeStyle ? KEY_FINGERPRINT_ADD_EXPRESSIVE : KEY_FINGERPRINT_ADD);
 
             if (mAddFingerprintPreference == null) {
                 return; // b/275519315 Skip if updateAddPreference() invoke before addPreference()
             }
 
+            updateAddingButtonStyle();
+
             /* Disable preference if too many fingerprints added */
             final int max = getContext().getResources().getInteger(
                     com.android.internal.R.integer.config_fingerprintMaxTemplatesPerUser);
@@ -828,6 +856,20 @@ public class FingerprintSettings extends SubSettings {
                     && !tooMany && !removalInProgress && mToken != null);
         }
 
+        private void updateAddingButtonStyle() {
+            final Preference nonExpressiveBtnPreference = findPreference(KEY_FINGERPRINT_ADD);
+            final ButtonPreference expressiveBtnPreference =
+                    findPreference(KEY_FINGERPRINT_ADD_EXPRESSIVE);
+
+            if (nonExpressiveBtnPreference != null) {
+                nonExpressiveBtnPreference.setVisible(!mIsExpressiveThemeStyle);
+            }
+
+            if (expressiveBtnPreference != null) {
+                expressiveBtnPreference.setVisible(mIsExpressiveThemeStyle);
+            }
+        }
+
         private void createFooterPreference(PreferenceGroup root) {
             final Context context = getActivity();
             if (context == null) {
@@ -925,11 +967,11 @@ public class FingerprintSettings extends SubSettings {
         @Override
         public boolean onPreferenceTreeClick(Preference pref) {
             final String key = pref.getKey();
-            if (KEY_FINGERPRINT_ADD.equals(key)) {
+            if (!mIsExpressiveThemeStyle && KEY_FINGERPRINT_ADD.equals(key)) {
                 mIsEnrolling = true;
                 Intent intent = new Intent();
                 intent.setClassName(SETTINGS_PACKAGE_NAME,
-                    FingerprintEnroll.AddAdditionalFingerprint.class.getName());
+                        FingerprintEnroll.AddAdditionalFingerprint.class.getName());
                 intent.putExtra(Intent.EXTRA_USER_ID, mUserId);
                 intent.putExtra(ChooseLockSettingsHelper.EXTRA_KEY_CHALLENGE_TOKEN, mToken);
                 if (mCalibrator != null) {