[Catalyst] Migrate "Mobile data"

Bug: 368355368
Flag: com.android.settings.flags.catalyst_mobile_network_list
Test: devtool
Change-Id: Id6092f37e0790566a2fdeb8a6f10e17ad79def78

src/com/android/settings/network/MobileDataPreference.kt

@@ -0,0 +1,78 @@
+/*
+ * 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.network
+
+import android.content.Context
+import android.telephony.SubscriptionManager
+import com.android.settings.R
+import com.android.settings.network.telephony.MobileDataRepository
+import com.android.settings.network.telephony.SubscriptionRepository
+import com.android.settingslib.datastore.KeyValueStore
+import com.android.settingslib.datastore.NoOpKeyedObservable
+import com.android.settingslib.metadata.PreferenceAvailabilityProvider
+import com.android.settingslib.metadata.ReadWritePermit
+import com.android.settingslib.metadata.SensitivityLevel
+import com.android.settingslib.metadata.SwitchPreference
+import kotlinx.coroutines.flow.first
+import kotlinx.coroutines.runBlocking
+
+class MobileDataPreference :
+    SwitchPreference(
+        KEY,
+        R.string.mobile_data_settings_title,
+        R.string.mobile_data_settings_summary,
+    ),
+    PreferenceAvailabilityProvider {
+
+    override fun isAvailable(context: Context) =
+        SubscriptionRepository(context).getSelectableSubscriptionInfoList().any {
+            it.simSlotIndex > -1
+        }
+
+    override fun storage(context: Context): KeyValueStore = MobileDataStorage(context)
+
+    override fun getReadPermit(context: Context, myUid: Int, callingUid: Int) =
+        ReadWritePermit.ALLOW
+
+    override fun getWritePermit(context: Context, value: Boolean?, myUid: Int, callingUid: Int) =
+        ReadWritePermit.ALLOW
+
+    override val sensitivityLevel
+        get() = SensitivityLevel.LOW_SENSITIVITY
+
+    @Suppress("UNCHECKED_CAST")
+    private class MobileDataStorage(private val context: Context) :
+        NoOpKeyedObservable<String>(), KeyValueStore {
+
+        override fun contains(key: String) = key == KEY
+
+        override fun <T : Any> getValue(key: String, valueType: Class<T>): T {
+            val subId = SubscriptionManager.getDefaultDataSubscriptionId()
+            val flow = MobileDataRepository(context).isMobileDataEnabledFlow(subId)
+            return runBlocking { flow.first() } as T
+        }
+
+        override fun <T : Any> setValue(key: String, valueType: Class<T>, value: T?) {
+            val subId = SubscriptionManager.getDefaultDataSubscriptionId()
+            MobileDataRepository(context).setMobileDataEnabled(subId, value as Boolean)
+        }
+    }
+
+    companion object {
+        const val KEY = "mobile_data"
+    }
+}

src/com/android/settings/network/MobileNetworkListScreen.kt

@@ -159,7 +159,8 @@ class MobileNetworkListScreen :
 
     override fun fragmentClass() = MobileNetworkListFragment::class.java
 
-    override fun getPreferenceHierarchy(context: Context) = preferenceHierarchy(this) {}
+    override fun getPreferenceHierarchy(context: Context) =
+        preferenceHierarchy(this) { +MobileDataPreference() }
 
     companion object {
         const val KEY = "mobile_network_list"