| /* |
| * Copyright (C) 2023 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.intentresolver.widget |
| |
| import android.util.Log |
| import android.view.View |
| import androidx.core.view.OneShotPreDrawListener |
| import kotlinx.coroutines.suspendCancellableCoroutine |
| import java.util.concurrent.atomic.AtomicBoolean |
| |
| internal suspend fun View.waitForPreDraw(): Unit = suspendCancellableCoroutine { continuation -> |
| val isResumed = AtomicBoolean(false) |
| val callback = OneShotPreDrawListener.add( |
| this, |
| Runnable { |
| if (isResumed.compareAndSet(false, true)) { |
| continuation.resumeWith(Result.success(Unit)) |
| } else { |
| // it's not really expected but in some unknown corner-case let's not crash |
| Log.e("waitForPreDraw", "An attempt to resume a completed coroutine", Exception()) |
| } |
| } |
| ) |
| continuation.invokeOnCancellation { callback.removeListener() } |
| } |