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 
GenreItems()51     private GenreItems() { }
52 
53     /**
54      * Returns array of all genre labels.
55      */
getLabels(Context context)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      */
getGenreCount()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      */
getCanonicalGenre(int id)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      */
getId(String canonicalGenre)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