1 /* 2 * Copyright 2024 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.photopicker.core.features 18 19 import androidx.compose.runtime.staticCompositionLocalOf 20 21 /** 22 * Provider for fetching [FeatureManager] inside of composables. [staticCompositionLocalOf] is used 23 * here because the FeatureManager is unlikely to change or be reassigned, and there are performance 24 * benefits for not having to keep track of consumers to apply recompositions. The drawback is that 25 * the content this CompositionLocal wraps will be recalculated if the value is changed. Since it's 26 * not expected for the FeatureManager reference to be updated (this is being provided by the 27 * Activity at the top of the UI tree), and is injected via Hilt, this value should be very stable. 28 */ 29 val LocalFeatureManager = <lambda>null30 staticCompositionLocalOf<FeatureManager> { error("No FeatureManager provided") } 31