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      1 /*
      2  * Copyright (C) 2015 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.android.tv.data;
     18 
     19 import android.content.Context;
     20 import android.media.tv.TvContract.Programs.Genres;
     21 
     22 import com.android.tv.R;
     23 
     24 public class GenreItems {
     25     /**
     26      * Genre ID indicating all channels.
     27      */
     28     public static final int ID_ALL_CHANNELS = 0;
     29 
     30     private static final String[] CANONICAL_GENRES = {
     31         null, // All channels
     32         Genres.FAMILY_KIDS,
     33         Genres.SPORTS,
     34         Genres.SHOPPING,
     35         Genres.MOVIES,
     36         Genres.COMEDY,
     37         Genres.TRAVEL,
     38         Genres.DRAMA,
     39         Genres.EDUCATION,
     40         Genres.ANIMAL_WILDLIFE,
     41         Genres.NEWS,
     42         Genres.GAMING,
     43         Genres.ARTS,
     44         Genres.ENTERTAINMENT,
     45         Genres.LIFE_STYLE,
     46         Genres.MUSIC,
     47         Genres.PREMIER,
     48         Genres.TECH_SCIENCE
     49     };
     50 
     51     private GenreItems() { }
     52 
     53     /**
     54      * Returns array of all genre labels.
     55      */
     56     public static String[] getLabels(Context context) {
     57         String[] items = context.getResources().getStringArray(R.array.genre_labels);
     58         if (items.length != CANONICAL_GENRES.length) {
     59             throw new IllegalArgumentException("Genre data mismatch");
     60         }
     61         return items;
     62     }
     63 
     64     /**
     65      * Returns the number of genres including all channels.
     66      */
     67     public static int getGenreCount() {
     68         return CANONICAL_GENRES.length;
     69     }
     70 
     71     /**
     72      * Returns the canonical genre for the given id.
     73      * If the id is invalid, {@code null} will be returned instead.
     74      */
     75     public static String getCanonicalGenre(int id) {
     76         if (id < 0 || id >= CANONICAL_GENRES.length) {
     77             return null;
     78         }
     79         return CANONICAL_GENRES[id];
     80     }
     81 
     82     /**
     83      * Returns id for the given canonical genre.
     84      * If the genre is invalid, {@link #ID_ALL_CHANNELS} will be returned instead.
     85      */
     86     public static int getId(String canonicalGenre) {
     87         if (canonicalGenre == null) {
     88             return ID_ALL_CHANNELS;
     89         }
     90         for (int i = 1; i < CANONICAL_GENRES.length; ++i) {
     91             if (CANONICAL_GENRES[i].equals(canonicalGenre)) {
     92                 return i;
     93             }
     94         }
     95         return ID_ALL_CHANNELS;
     96     }
     97 }
     98