1/n: Prepare ConfirmDeviceCredentials to use BiometricPrompt

CDC is going to use BiometricPrompt instead. This change
removes FingerprintManager from CDC. BiometricPrompt
will show before pin/pattern/pass is shown.

Bug: 111461540

Test: modified BiometricPromptDemo to use
      KeyguardManager#createConfirmDeviceCredentialIntent,
Test: Fingerprint is gone from CDC, rotation works
Test: atest SettingsRoboTests

Change-Id: I9ce2aad71961af8a0d5ee636600e2fbdb6154e47

src/com/android/settings/password/ConfirmDeviceCredentialBaseFragment.java

@@ -53,14 +53,12 @@ import androidx.fragment.app.FragmentManager;
 import com.android.internal.widget.LockPatternUtils;
 import com.android.settings.R;
 import com.android.settings.Utils;
-import com.android.settings.biometrics.fingerprint.FingerprintUiHelper;
 import com.android.settings.core.InstrumentedFragment;
 
 /**
  * Base fragment to be shared for PIN/Pattern/Password confirmation fragments.
  */
-public abstract class ConfirmDeviceCredentialBaseFragment extends InstrumentedFragment
-        implements FingerprintUiHelper.Callback {
+public abstract class ConfirmDeviceCredentialBaseFragment extends InstrumentedFragment {
 
     public static final String PACKAGE = "com.android.settings";
     public static final String TITLE_TEXT = PACKAGE + ".ConfirmCredentials.title";
@@ -81,10 +79,8 @@ public abstract class ConfirmDeviceCredentialBaseFragment extends InstrumentedFr
     /** Time we wait before clearing a wrong input attempt (e.g. pattern) and the error message. */
     protected static final long CLEAR_WRONG_ATTEMPT_TIMEOUT_MS = 3000;
 
-    private FingerprintUiHelper mFingerprintHelper;
     protected boolean mReturnCredentials = false;
     protected Button mCancelButton;
-    protected ImageView mFingerprintIcon;
     protected int mEffectiveUserId;
     protected int mUserId;
     protected UserManager mUserManager;
@@ -123,9 +119,7 @@ public abstract class ConfirmDeviceCredentialBaseFragment extends InstrumentedFr
     public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
         super.onViewCreated(view, savedInstanceState);
         mCancelButton = (Button) view.findViewById(R.id.cancelButton);
-        mFingerprintIcon = (ImageView) view.findViewById(R.id.fingerprintIcon);
-        mFingerprintHelper = new FingerprintUiHelper(
-                mFingerprintIcon, view.findViewById(R.id.errorText), this, mUserId);
+
         boolean showCancelButton = getActivity().getIntent().getBooleanExtra(
                 SHOW_CANCEL_BUTTON, false);
         boolean hasAlternateButton = mFrp && !TextUtils.isEmpty(mFrpAlternateButtonText);
@@ -153,29 +147,16 @@ public abstract class ConfirmDeviceCredentialBaseFragment extends InstrumentedFr
         }
     }
 
-    private boolean isFingerprintDisabledByAdmin() {
-        final int disabledFeatures =
-                mDevicePolicyManager.getKeyguardDisabledFeatures(null, mEffectiveUserId);
-        return (disabledFeatures & DevicePolicyManager.KEYGUARD_DISABLE_FINGERPRINT) != 0;
-    }
-
     // User could be locked while Effective user is unlocked even though the effective owns the
     // credential. Otherwise, fingerprint can't unlock fbe/keystore through
     // verifyTiedProfileChallenge. In such case, we also wanna show the user message that
     // fingerprint is disabled due to device restart.
     protected boolean isStrongAuthRequired() {
         return mFrp
-                || !mLockPatternUtils.isFingerprintAllowedForUser(mEffectiveUserId)
+                || !mLockPatternUtils.isBiometricAllowedForUser(mEffectiveUserId)
                 || !mUserManager.isUserUnlocked(mUserId);
     }
 
-    private boolean isFingerprintAllowed() {
-        return !mReturnCredentials
-                && getActivity().getIntent().getBooleanExtra(ALLOW_FP_AUTHENTICATION, false)
-                && !isStrongAuthRequired()
-                && !isFingerprintDisabledByAdmin();
-    }
-
     @Override
     public void onResume() {
         super.onResume();
@@ -183,13 +164,6 @@ public abstract class ConfirmDeviceCredentialBaseFragment extends InstrumentedFr
     }
 
     protected void refreshLockScreen() {
-        if (isFingerprintAllowed()) {
-            mFingerprintHelper.startListening();
-        } else {
-            if (mFingerprintHelper.isListening()) {
-                mFingerprintHelper.stopListening();
-            }
-        }
         updateErrorMessage(mLockPatternUtils.getCurrentFailedPasswordAttempts(mEffectiveUserId));
     }
 
@@ -214,28 +188,10 @@ public abstract class ConfirmDeviceCredentialBaseFragment extends InstrumentedFr
     @Override
     public void onPause() {
         super.onPause();
-        if (mFingerprintHelper.isListening()) {
-            mFingerprintHelper.stopListening();
-        }
-    }
-
-    @Override
-    public void onAuthenticated() {
-        // Check whether we are still active.
-        if (getActivity() != null && getActivity().isResumed()) {
-            TrustManager trustManager =
-                (TrustManager) getActivity().getSystemService(Context.TRUST_SERVICE);
-            trustManager.setDeviceLockedForUser(mEffectiveUserId, false);
-            authenticationSucceeded();
-            checkForPendingIntent();
-        }
     }
 
     protected abstract void authenticationSucceeded();
 
-    @Override
-    public void onFingerprintIconVisibilityChanged(boolean visible) {
-    }
 
     public void prepareEnterAnimation() {
     }