Editor

MockPlaylistAdapterFactory.java

/*
 * Copyright (c) 2017 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.example.android.assistantplayback.playlist;

import com.example.android.assistantplayback.data.MockDatabase;
import com.example.android.assistantplayback.model.Movie;

import java.util.List;

/** Creates {@link ListPlaylistAdapter}s with mock playlist data. */
public class MockPlaylistAdapterFactory {

/**
     * Creates a {@link MovieListPlaylistAdapter} with a mock playlist. The movie is the active item
     * in the playlist.
     *
     * @param movieId The id of the active movie in the playlist.
     * @return A {@link MovieListPlaylistAdapter} with a mock playlist seeded with the given movie.
     */
    public static ListPlaylistAdapter<Movie> createMoviePlaylistAdapterWithActiveMovieId(
            int movieId) {
        List<Movie> movies = MockDatabase.getAllMovies();
        int activeIndex = getCurrentMovieIndex(movies, movieId);
        activeIndex = activeIndex >= 0 ? activeIndex : 0;
        return new MovieListPlaylistAdapter(movies, activeIndex);
    }

private static int getCurrentMovieIndex(List<Movie> movies, int currentMovieId) {
        for (int index = 0; index < movies.size(); index++) {
            if (currentMovieId == movies.get(index).getId()) {
                return index;
            }
        }
        return -1;
    }
}