ActualAndroid.kt
/*
* 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.
*/
package androidx.compose.runtime
import android.os.Looper
import androidx.compose.runtime.dispatch.AndroidUiDispatcher
import kotlinx.coroutines.Dispatchers
import kotlin.coroutines.CoroutineContext
class AndroidEmbeddingContext : EmbeddingContext {
override fun isMainThread(): Boolean {
return Looper.myLooper() == Looper.getMainLooper()
}
override fun mainThreadCompositionContext(): CoroutineContext {
return MainAndroidUiContext
}
}
actual fun EmbeddingContext(): EmbeddingContext = AndroidEmbeddingContext()
// TODO: Our host-side tests still grab the Android actuals based on SDK stubs that return null.
// Satisfy their dependencies.
private val MainAndroidUiContext: CoroutineContext by lazy {
if (Looper.getMainLooper() != null) AndroidUiDispatcher.Main
else Dispatchers.Main
}
internal actual object Trace {
actual fun beginSection(name: String): Any? {
android.os.Trace.beginSection(name)
return null
}
actual fun endSection(token: Any?) {
android.os.Trace.endSection()
}
}
internal actual typealias MainThread = androidx.annotation.MainThread
internal actual typealias CheckResult = androidx.annotation.CheckResult