| /* |
| * Copyright (C) 2021 The Dagger Authors. |
| * |
| * 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 dagger.hilt.android; |
| |
| import android.content.Context; |
| import dagger.hilt.EntryPoints; |
| import dagger.hilt.internal.GeneratedComponentManagerHolder; |
| import dagger.hilt.internal.Preconditions; |
| import dagger.hilt.internal.TestSingletonComponentManager; |
| import dagger.internal.Beta; |
| import java.lang.annotation.Annotation; |
| import javax.annotation.Nonnull; |
| |
| /** Static utility methods for accessing entry points annotated with {@link EarlyEntryPoint}. */ |
| @Beta |
| public final class EarlyEntryPoints { |
| |
| /** |
| * Returns the early entry point interface given a component manager holder. Note that this |
| * performs an unsafe cast and so callers should be sure that the given component/component |
| * manager matches the early entry point interface that is given. |
| * |
| * @param applicationContext The application context. |
| * @param entryPoint The interface marked with {@link EarlyEntryPoint}. The {@link |
| * dagger.hilt.InstallIn} annotation on this entry point should match the component argument |
| * above. |
| */ |
| // Note that the input is not statically declared to be a Component or ComponentManager to make |
| // this method easier to use, since most code will use this with an Application or Context type. |
| @Nonnull |
| public static <T> T get(Context applicationContext, Class<T> entryPoint) { |
| applicationContext = applicationContext.getApplicationContext(); |
| Preconditions.checkState( |
| applicationContext instanceof GeneratedComponentManagerHolder, |
| "Expected application context to implement GeneratedComponentManagerHolder. " |
| + "Check that you're passing in an application context that uses Hilt."); |
| Object componentManager = |
| ((GeneratedComponentManagerHolder) applicationContext).componentManager(); |
| if (componentManager instanceof TestSingletonComponentManager) { |
| Preconditions.checkState( |
| hasAnnotationReflection(entryPoint, EarlyEntryPoint.class), |
| "%s should be called with EntryPoints.get() rather than EarlyEntryPoints.get()", |
| entryPoint.getCanonicalName()); |
| Object earlyComponent = |
| ((TestSingletonComponentManager) componentManager).earlySingletonComponent(); |
| return entryPoint.cast(earlyComponent); |
| } |
| |
| // @EarlyEntryPoint only has an effect in test environment, so if this is not a test we |
| // delegate to EntryPoints. |
| return EntryPoints.get(applicationContext, entryPoint); |
| } |
| |
| // Note: This method uses reflection but it should only be called in test environments. |
| private static boolean hasAnnotationReflection( |
| Class<?> clazz, Class<? extends Annotation> annotationClazz) { |
| for (Annotation annotation : clazz.getAnnotations()) { |
| if (annotation.annotationType().equals(annotationClazz)) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| private EarlyEntryPoints() {} |
| } |