| /* |
| * Copyright (C) 2022 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.systemui.util.settings |
| |
| import android.annotation.UserIdInt |
| import android.database.ContentObserver |
| import com.android.systemui.common.coroutine.ConflatedCallbackFlow.conflatedCallbackFlow |
| import kotlinx.coroutines.channels.awaitClose |
| import kotlinx.coroutines.flow.Flow |
| |
| /** Kotlin extension functions for [SettingsProxy]. */ |
| object SettingsProxyExt { |
| |
| /** Returns a flow of [Unit] that is invoked each time that content is updated. */ |
| fun SettingsProxy.observerFlow( |
| @UserIdInt userId: Int, |
| vararg names: String, |
| ): Flow<Unit> { |
| return conflatedCallbackFlow { |
| val observer = |
| object : ContentObserver(null) { |
| override fun onChange(selfChange: Boolean) { |
| trySend(Unit) |
| } |
| } |
| |
| names.forEach { name -> registerContentObserverForUser(name, observer, userId) } |
| |
| awaitClose { unregisterContentObserver(observer) } |
| } |
| } |
| } |