| /* |
| * 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 android.annotation.TestApi; |
| import android.util.SparseArray; |
| |
| import com.android.internal.util.Preconditions; |
| |
| /** |
| * Encapsulates a request to modify the state of multiple lights. |
| * |
| * @hide |
| */ |
| @SystemApi |
| @TestApi |
| public final class LightsRequest { |
| |
| /** Visible to {@link LightsManager.Session}. */ |
| final int[] mLightIds; |
| |
| /** Visible to {@link LightsManager.Session}. */ |
| final LightState[] mLightStates; |
| |
| /** |
| * Can only be constructed via {@link LightsRequest.Builder#build()}. |
| */ |
| private LightsRequest(SparseArray<LightState> changes) { |
| final int n = changes.size(); |
| mLightIds = new int[n]; |
| mLightStates = new LightState[n]; |
| for (int i = 0; i < n; i++) { |
| mLightIds[i] = changes.keyAt(i); |
| mLightStates[i] = changes.valueAt(i); |
| } |
| } |
| |
| /** |
| * Builder for creating device light change requests. |
| */ |
| public static final class Builder { |
| |
| private final SparseArray<LightState> mChanges = new SparseArray<>(); |
| |
| /** |
| * 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 setLight(@NonNull Light light, @NonNull LightState state) { |
| Preconditions.checkNotNull(light); |
| Preconditions.checkNotNull(state); |
| mChanges.put(light.getId(), state); |
| return this; |
| } |
| |
| /** |
| * 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.getId(), 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); |
| } |
| } |
| } |