| /* |
| * Copyright (C) 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 com.android.systemui.complication; |
| |
| import androidx.lifecycle.LiveData; |
| import androidx.lifecycle.Transformations; |
| import androidx.lifecycle.ViewModel; |
| |
| import java.util.Collection; |
| import java.util.stream.Collectors; |
| |
| import javax.inject.Inject; |
| |
| /** |
| * {@link ComplicationCollectionViewModel} is an abstraction for observing and accessing |
| * {@link ComplicationViewModel} for registered {@link Complication}. |
| */ |
| public class ComplicationCollectionViewModel extends ViewModel { |
| private final LiveData<Collection<ComplicationViewModel>> mComplications; |
| private final ComplicationViewModelTransformer mTransformer; |
| |
| /** |
| * Injectable constructor for {@link ComplicationCollectionViewModel}. Note that this cannot |
| * be implicitly injected. Clients must bind scoped instance values through the corresponding |
| * dagger subcomponent. |
| */ |
| @Inject |
| public ComplicationCollectionViewModel( |
| ComplicationCollectionLiveData complications, |
| ComplicationViewModelTransformer transformer) { |
| mComplications = Transformations.map(complications, collection -> convert(collection)); |
| mTransformer = transformer; |
| } |
| |
| private Collection<ComplicationViewModel> convert(Collection<Complication> complications) { |
| return complications |
| .stream() |
| .map(complication -> mTransformer.getViewModel(complication)) |
| .collect(Collectors.toSet()); |
| } |
| |
| /** |
| * Returns {@link LiveData} for the collection of {@link Complication} represented as |
| * {@link ComplicationViewModel}. |
| */ |
| public LiveData<Collection<ComplicationViewModel>> getComplications() { |
| return mComplications; |
| } |
| } |