1 /* 2 * Copyright (C) 2025 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.systemui.util.composable.kairos 18 19 import androidx.compose.runtime.State as ComposeState 20 import androidx.compose.runtime.mutableStateOf 21 import com.android.systemui.kairos.BuildScope 22 import com.android.systemui.kairos.ExperimentalKairosApi 23 import com.android.systemui.kairos.State as KairosState 24 import com.android.systemui.kairos.changes 25 26 /** 27 * Returns a [ComposeState] that is kept hydrated with the current value of [state] within this 28 * [BuildScope]. 29 */ 30 @ExperimentalKairosApi toComposeStatenull31fun <T> BuildScope.toComposeState(state: KairosState<T>): ComposeState<T> { 32 val initial = state.sample() 33 val cState = mutableStateOf(initial) 34 state.changes.observe { cState.value = it } 35 return cState 36 } 37