| /* |
| * Copyright (C) 2020 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 android.hardware.lights; |
| |
| import android.annotation.NonNull; |
| import android.annotation.SystemApi; |
| |
| import com.android.internal.util.Preconditions; |
| |
| import java.util.ArrayList; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| /** |
| * Encapsulates a request to modify the state of multiple lights. |
| * |
| */ |
| public final class LightsRequest { |
| |
| /** Visible to {@link LightsManager.Session}. */ |
| final Map<Light, LightState> mRequests = new HashMap<>(); |
| final List<Integer> mLightIds = new ArrayList<>(); |
| final List<LightState> mLightStates = new ArrayList<>(); |
| |
| /** |
| * Can only be constructed via {@link LightsRequest.Builder#build()}. |
| */ |
| private LightsRequest(Map<Light, LightState> requests) { |
| mRequests.putAll(requests); |
| List<Light> lights = new ArrayList<Light>(mRequests.keySet()); |
| for (int i = 0; i < lights.size(); i++) { |
| final Light light = lights.get(i); |
| mLightIds.add(i, light.getId()); |
| mLightStates.add(i, mRequests.get(light)); |
| } |
| } |
| |
| /** |
| * Get a list of Light as ids. |
| * |
| * @return List of light ids in the request. |
| */ |
| public @NonNull List<Integer> getLights() { |
| return mLightIds; |
| } |
| |
| /** |
| * Get a list of LightState. The states will be returned in same order as the light ids |
| * returned by {@link #getLights()}. |
| * |
| * @return List of light states |
| */ |
| public @NonNull List<LightState> getLightStates() { |
| return mLightStates; |
| } |
| |
| /** |
| * Get a map of lights and states. The map will contain all the lights as keys and |
| * the corresponding LightState requested as values. |
| */ |
| public @NonNull Map<Light, LightState> getLightsAndStates() { |
| return mRequests; |
| } |
| |
| /** |
| * Builder for creating device light change requests. |
| */ |
| public static final class Builder { |
| |
| final Map<Light, LightState> mChanges = new HashMap<>(); |
| /** |
| * Overrides the color and intensity of a given light. |
| * |
| * @param light the light to modify |
| * @param state the desired color and intensity of the light |
| */ |
| public @NonNull Builder addLight(@NonNull Light light, @NonNull LightState state) { |
| Preconditions.checkNotNull(light); |
| Preconditions.checkNotNull(state); |
| mChanges.put(light, state); |
| return this; |
| } |
| |
| /** |
| * Overrides the color and intensity of a given light. |
| * |
| * @param light the light to modify |
| * @param state the desired color and intensity of the light * |
| * @deprecated Use {@link #addLight(Light, LightState)} instead. |
| * @hide |
| */ |
| @SystemApi |
| @Deprecated |
| public @NonNull Builder setLight(@NonNull Light light, @NonNull LightState state) { |
| return addLight(light, state); |
| } |
| |
| /** |
| * Removes the override for the color and intensity of a given light. |
| * |
| * @param light the light to modify |
| */ |
| public @NonNull Builder clearLight(@NonNull Light light) { |
| Preconditions.checkNotNull(light); |
| mChanges.put(light, null); |
| return this; |
| } |
| |
| /** |
| * Create a LightsRequest object used to override lights on the device. |
| * |
| * <p>The generated {@link LightsRequest} should be used in |
| * {@link LightsManager.Session#requestLights(LightsLightsRequest). |
| */ |
| public @NonNull LightsRequest build() { |
| return new LightsRequest(mChanges); |
| } |
| } |
| } |