Add notifications toggle to Settings > Date and Time

Design doc: go/android-tznotifications
Test: atest and on device
Bug: 283267917
Bug: 283437447
Flag: com.android.server.flags.datetime_notifications

Change-Id: I91ea363a145d7184c997beae17862387114bc09b

src/com/android/settings/datetime/DateTimeLaunchUtils.java

@@ -0,0 +1,52 @@
+/*
+ * Copyright (C) 2024 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.datetime;
+
+import static android.provider.DeviceConfig.NAMESPACE_SETTINGS_UI;
+
+import android.provider.DeviceConfig;
+
+import com.android.settings.flags.Flags;
+
+/** A class to avoid duplication of launch-control logic for "time feedback" support. */
+final class DateTimeLaunchUtils {
+    /**
+     * A {@link DeviceConfig} flag that influences whether the settings entries related to help and
+     * feedback are supported on this device / for this user.
+     */
+    public static final String KEY_HELP_AND_FEEDBACK_FEATURE_SUPPORTED =
+            "time_help_and_feedback_feature_supported";
+
+    private DateTimeLaunchUtils() {}
+
+    static boolean isFeedbackFeatureSupported() {
+        // Support is determined according to:
+        // 1) A build-time flag to determine release feature availability.
+        // 2) A runtime / server-side flag to determine which devices / who gets to see the feature.
+        //    This is launch control for limiting the feedback to droidfooding.
+        return isFeedbackFeatureSupportedThisRelease() && isFeedbackFeatureSupportedOnThisDevice();
+    }
+
+    private static boolean isFeedbackFeatureSupportedThisRelease() {
+        return Flags.datetimeFeedback();
+    }
+
+    private static boolean isFeedbackFeatureSupportedOnThisDevice() {
+        boolean defaultIsSupported = false;
+        return DeviceConfig.getBoolean(
+                NAMESPACE_SETTINGS_UI, KEY_HELP_AND_FEEDBACK_FEATURE_SUPPORTED, defaultIsSupported);
+    }
+}