| /* |
| * Copyright 2022 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.camera.previewview.internal.quirk; |
| |
| |
| import androidx.annotation.NonNull; |
| import androidx.annotation.Nullable; |
| |
| import java.util.List; |
| |
| /** |
| * Tests version of main/.../DeviceQuirks.java, which provides device specific quirks, used for |
| * device specific workarounds. |
| * <p> |
| * In main/.../DeviceQuirks, Device quirks are loaded the first time a device workaround is |
| * encountered, and remain in memory until the process is killed. When running tests, this means |
| * that the same device quirks are used for all the tests. This causes an issue when tests modify |
| * device properties (using Robolectric for instance). Instead of force-reloading the device |
| * quirks in every test that uses a device workaround, this class internally reloads the quirks |
| * every time a device workaround is needed. |
| */ |
| public class DeviceQuirks { |
| |
| private DeviceQuirks() { |
| } |
| |
| /** |
| * Retrieves a specific device {@link Quirk} instance given its type. |
| * |
| * @param quirkClass The type of device quirk to retrieve. |
| * @return A device {@link Quirk} instance of the provided type, or {@code null} if it isn't |
| * found. |
| */ |
| @SuppressWarnings("unchecked") |
| @Nullable |
| public static <T extends Quirk> T get(@NonNull final Class<T> quirkClass) { |
| final List<Quirk> quirks = DeviceQuirksLoader.loadQuirks(); |
| quirks.addAll(QuirkInjector.INJECTED_QUIRKS); |
| for (final Quirk quirk : quirks) { |
| if (quirk.getClass() == quirkClass) { |
| return (T) quirk; |
| } |
| } |
| return null; |
| } |
| } |
