| /* |
| * 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 com.android.systemui.complication.dagger.ComplicationViewModelComponent; |
| |
| import java.util.HashMap; |
| |
| import javax.inject.Inject; |
| |
| /** |
| * The {@link ComplicationViewModelTransformer} responsibility is provide a mapping from |
| * {@link Complication} to {@link ComplicationViewModel}. |
| */ |
| public class ComplicationViewModelTransformer { |
| private final ComplicationId.Factory mComplicationIdFactory = new ComplicationId.Factory(); |
| private final HashMap<Complication, ComplicationId> mComplicationIdMapping = new HashMap<>(); |
| private final ComplicationViewModelComponent.Factory mViewModelComponentFactory; |
| |
| @Inject |
| public ComplicationViewModelTransformer( |
| ComplicationViewModelComponent.Factory viewModelComponentFactory) { |
| mViewModelComponentFactory = viewModelComponentFactory; |
| } |
| |
| /** |
| * Generates {@link ComplicationViewModel} from a {@link Complication}. |
| */ |
| public ComplicationViewModel getViewModel(Complication complication) { |
| final ComplicationId id = getComplicationId(complication); |
| return mViewModelComponentFactory.create(complication, id) |
| .getViewModelProvider().get(id.toString(), ComplicationViewModel.class); |
| } |
| |
| private ComplicationId getComplicationId(Complication complication) { |
| if (!mComplicationIdMapping.containsKey(complication)) { |
| mComplicationIdMapping.put(complication, mComplicationIdFactory.getNextId()); |
| } |
| |
| return mComplicationIdMapping.get(complication); |
| } |
| } |