Protect "Lock after timeout" page with an auth challenge.

Test: manual
Bug: 315937886

Change-Id: Ib3da9f783892828c0c9cfdc4ebb27b2d982e5274

aconfig/settings_security_flag_declarations.aconfig

@@ -0,0 +1,8 @@
+package: "com.android.settings.flags"
+
+flag {
+  name: "protect_lock_after_timeout_with_auth"
+  namespace: "safety_center"
+  description: "Require an auth challenge to open Lock after timeout page"
+  bug: "315937886"
+}

res/xml/screen_lock_settings.xml

@@ -40,7 +40,7 @@
 
 
     <!-- available in pin/pattern/password -->
-    <com.android.settings.display.TimeoutListPreference
+    <com.android.settings.security.screenlock.ProtectedTimeoutListPreference
         android:key="lock_after_timeout"
         android:title="@string/lock_after_timeout"
         android:summary="@string/summary_placeholder"

src/com/android/settings/security/screenlock/ProtectedTimeoutListPreference.java

@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2023 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.security.screenlock;
+
+import android.content.Context;
+import android.util.AttributeSet;
+
+import com.android.settings.display.TimeoutListPreference;
+import com.android.settings.flags.Flags;
+import com.android.settings.wifi.dpp.WifiDppUtils;
+
+/** Wraps {@link TimeoutListPreference} with an authentication challenge for user. */
+public class ProtectedTimeoutListPreference extends TimeoutListPreference {
+    public ProtectedTimeoutListPreference(Context context, AttributeSet attrs) {
+        super(context, attrs);
+    }
+
+    @Override
+    public void performClick() {
+        if (Flags.protectLockAfterTimeoutWithAuth()) {
+            WifiDppUtils.showLockScreen(getContext(), super::performClick);
+        } else {
+            super.performClick();
+        }
+    }
+}