| /* |
| * Copyright 2019 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. |
| */ |
| |
| @file:Suppress("unused", "UNUSED_PARAMETER", "UNUSED_VARIABLE", "LocalVariableName") |
| |
| package androidx.compose.runtime.samples |
| |
| import androidx.annotation.Sampled |
| import androidx.compose.runtime.Composable |
| import androidx.compose.runtime.Providers |
| import androidx.compose.runtime.ambientOf |
| |
| @Sampled |
| fun createAmbient() { |
| val ActiveUser = ambientOf<User> { error("No active user found!") } |
| } |
| |
| @Sampled |
| @Composable |
| fun ambientProvider() { |
| @Composable |
| fun App(user: User) { |
| Providers(ActiveUser provides user) { |
| SomeScreen() |
| } |
| } |
| } |
| |
| @Sampled |
| @Composable |
| fun someScreenSample() { |
| @Composable |
| fun SomeScreen() { |
| UserPhoto() |
| } |
| } |
| |
| @Sampled |
| @Composable |
| fun consumeAmbient() { |
| @Composable |
| fun UserPhoto() { |
| val user = ActiveUser.current |
| ProfileIcon(src = user.profilePhotoUrl) |
| } |
| } |
| |
| private val ActiveUser = ambientOf<User> { error("No active user found!") } |
| |
| @Composable private fun SomeScreen() {} |
| |
| @Composable private fun UserPhoto() {} |