Move hub mode settings under display.

And add a "when to show" setting.

Bug: 401001786
Test: manually
Flag: com.android.systemui.glanceable_hub_v2

Change-Id: I5f660a1be4bdbb5ab5bb14aa070bfa81b31da6b4

src/com/android/settings/display/WidgetsOnLockscreenPreferenceController.java

@@ -0,0 +1,55 @@
+/*
+ * Copyright (C) 2025 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.display;
+
+import android.content.Context;
+import android.os.UserHandle;
+import android.os.UserManager;
+
+import com.android.settings.R;
+import com.android.settings.core.BasePreferenceController;
+
+/** Controls the "widgets on lock screen" preferences (under "Display & touch"). */
+public class WidgetsOnLockscreenPreferenceController extends BasePreferenceController {
+    public WidgetsOnLockscreenPreferenceController(Context context, String preferenceKey) {
+        super(context, preferenceKey);
+    }
+
+    @Override
+    public int getAvailabilityStatus() {
+        return isAvailable(mContext) ? AVAILABLE : UNSUPPORTED_ON_DEVICE;
+    }
+
+    /**
+     * Returns whether "widgets on lock screen" preferences are available.
+     */
+    public static boolean isAvailable(Context context) {
+        if (!isMainUser(context)) {
+            return false;
+        }
+
+        return com.android.systemui.Flags.glanceableHubV2()
+                && (context.getResources().getBoolean(R.bool.config_show_communal_settings)
+                    || context.getResources().getBoolean(
+                            R.bool.config_show_communal_settings_mobile));
+    }
+
+    private static boolean isMainUser(Context context) {
+        final UserManager userManager = context.getSystemService(UserManager.class);
+        return userManager.getUserInfo(UserHandle.myUserId()).isMain();
+    }
+}