SystemUI: Implement face unlock recognition text

Change-Id: Ib7a0562e2d134b9fed9e45293939db3786c54f24

Author: minaripenguin

packages/SystemUI/res/values/sun_strings.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+     Copyright (C) 2025 The SunOS Project
+     SPDX-License-Identifier: Apache-2.0
+-->
+<resources xmlns:xliff="urn:oasis:names:tc:xliff:document:1.2">
+    <!-- Face unlock -->
+    <string name="face_unlock_recognizing">Recognizing face...</string>
+</resources>

packages/SystemUI/src/com/android/systemui/statusbar/KeyguardIndicationController.java

@@ -150,6 +150,8 @@ public class KeyguardIndicationController {
 
     private static final int MSG_SHOW_ACTION_TO_UNLOCK = 1;
     private static final int MSG_RESET_ERROR_MESSAGE_ON_SCREEN_ON = 2;
+    private static final int MSG_SHOW_RECOGNIZING_FACE = 3;
+    private static final int MSG_HIDE_RECOGNIZING_FACE = 4;
     private static final long TRANSIENT_BIOMETRIC_ERROR_TIMEOUT = 1300;
     public static final long DEFAULT_MESSAGE_TIME = 3500;
     public static final long DEFAULT_HIDE_DELAY_MS =
@@ -227,6 +229,7 @@ public class KeyguardIndicationController {
     private Set<Integer> mCoExFaceAcquisitionMsgIdsToShow;
     private final FaceHelpMessageDeferral mFaceAcquiredMessageDeferral;
     private boolean mInited;
+    private boolean mFaceDetectionRunning;
 
     private KeyguardUpdateMonitorCallback mUpdateMonitorCallback;
 
@@ -267,6 +270,15 @@ public void onScreenTurnedOn() {
                 mBiometricErrorMessageToShowOnScreenOn = null;
             }
         }
+
+        @Override
+        public void onScreenTurnedOff() {
+            if (mFaceDetectionRunning) {
+                mFaceDetectionRunning = false;
+                mBiometricErrorMessageToShowOnScreenOn = null;
+                hideFaceUnlockRecognizingMessage();
+            }
+        }
     };
     private boolean mFaceLockedOutThisAuthSession;
 
@@ -357,6 +369,11 @@ public void handleMessage(Message msg) {
                     showActionToUnlock();
                 } else if (msg.what == MSG_RESET_ERROR_MESSAGE_ON_SCREEN_ON) {
                     mBiometricErrorMessageToShowOnScreenOn = null;
+                } else if (msg.what == MSG_SHOW_RECOGNIZING_FACE) {
+                    mBiometricErrorMessageToShowOnScreenOn = null;
+                    showFaceUnlockRecognizingMessage();
+                } else if (msg.what == MSG_HIDE_RECOGNIZING_FACE) {
+                    hideFaceUnlockRecognizingMessage();
                 }
             }
         };
@@ -1033,6 +1050,21 @@ private void hideBiometricMessage() {
         }
     }
 
+    private void showFaceUnlockRecognizingMessage() {
+        String faceUnlockMessage = mContext.getResources().getString(
+            R.string.face_unlock_recognizing);
+        showBiometricMessage(faceUnlockMessage, FACE);
+    }
+
+    private void hideFaceUnlockRecognizingMessage() {
+        String faceUnlockMessage = mContext.getResources().getString(
+            R.string.face_unlock_recognizing);
+        if (mBiometricMessage != null && mBiometricMessage == faceUnlockMessage) {
+            mBiometricMessage = null;
+            hideBiometricMessage();
+        }
+    }
+
     /**
      * Hides transient indication.
      */
@@ -1548,8 +1580,17 @@ public void onTrustAgentErrorMessage(CharSequence message) {
         @Override
         public void onBiometricRunningStateChanged(boolean running,
                 BiometricSourceType biometricSourceType) {
-            if (!running && biometricSourceType == FACE) {
-                showTrustAgentErrorMessage(mTrustAgentErrorMessage);
+            if (biometricSourceType == BiometricSourceType.FACE) {
+                mFaceDetectionRunning = running;
+                if (running) {
+                    mHandler.removeMessages(MSG_HIDE_RECOGNIZING_FACE);
+                    mHandler.removeMessages(MSG_SHOW_RECOGNIZING_FACE);
+                    mHandler.sendEmptyMessageDelayed(MSG_SHOW_RECOGNIZING_FACE, 100);
+                } else {
+                    mHandler.removeMessages(MSG_SHOW_RECOGNIZING_FACE);
+                    mHandler.removeMessages(MSG_HIDE_RECOGNIZING_FACE);
+                    mHandler.sendEmptyMessageDelayed(MSG_HIDE_RECOGNIZING_FACE, 100);
+                }
             }
         }
 
@@ -1727,6 +1768,7 @@ public void onDozingChanged(boolean dozing) {
 
             if (mDozing) {
                 hideBiometricMessage();
+                hideFaceUnlockRecognizingMessage();
             }
             updateDeviceEntryIndication(false);
         }