| /* |
| * Copyright (C) 2016 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.server.twilight; |
| |
| import android.annotation.NonNull; |
| import android.os.Handler; |
| |
| /** |
| * This class provides sunrise/sunset information based on the device's current location. |
| */ |
| public interface TwilightManager { |
| /** |
| * Register a listener to be notified whenever the twilight state changes. |
| * |
| * @param listener the {@link TwilightListener} to be notified |
| * @param handler the {@link Handler} to use to notify the listener |
| */ |
| void registerListener(@NonNull TwilightListener listener, @NonNull Handler handler); |
| |
| /** |
| * Unregisters a previously registered listener. |
| * |
| * @param listener the {@link TwilightListener} to be unregistered |
| */ |
| void unregisterListener(@NonNull TwilightListener listener); |
| |
| /** |
| * Returns the last {@link TwilightState}, or {@code null} if not available. |
| */ |
| TwilightState getLastTwilightState(); |
| } |