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.annotation.SuppressLint;
20 import android.content.Context;
21 import android.media.tv.TvContract.Programs.Genres;
22 import android.os.Build;
23 
24 import com.android.tv.R;
25 
26 public class GenreItems {
27     /**
28      * Genre ID indicating all channels.
29      */
30     public static final int ID_ALL_CHANNELS = 0;
31 
32     private static final String[] CANONICAL_GENRES_L = {
33         null, // All channels
34         Genres.FAMILY_KIDS,
35         Genres.SPORTS,
36         Genres.SHOPPING,
37         Genres.MOVIES,
38         Genres.COMEDY,
39         Genres.TRAVEL,
40         Genres.DRAMA,
41         Genres.EDUCATION,
42         Genres.ANIMAL_WILDLIFE,
43         Genres.NEWS,
44         Genres.GAMING
45     };
46 
47     @SuppressLint("InlinedApi")
48     private static final String[] CANONICAL_GENRES_L_MR1 = {
49         null, // All channels
50         Genres.FAMILY_KIDS,
51         Genres.SPORTS,
52         Genres.SHOPPING,
53         Genres.MOVIES,
54         Genres.COMEDY,
55         Genres.TRAVEL,
56         Genres.DRAMA,
57         Genres.EDUCATION,
58         Genres.ANIMAL_WILDLIFE,
59         Genres.NEWS,
60         Genres.GAMING,
61         Genres.ARTS,
62         Genres.ENTERTAINMENT,
63         Genres.LIFE_STYLE,
64         Genres.MUSIC,
65         Genres.PREMIER,
66         Genres.TECH_SCIENCE
67     };
68 
69     private static final String[] CANONICAL_GENRES = createGenres();
70 
createGenres()71     private static String[] createGenres() {
72         if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP_MR1) {
73             return CANONICAL_GENRES_L;
74         } else {
75             return CANONICAL_GENRES_L_MR1;
76         }
77     }
78 
GenreItems()79     private GenreItems() { }
80 
81     /**
82      * Returns array of all genre labels.
83      */
getLabels(Context context)84     public static String[] getLabels(Context context) {
85         String[] items = Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP_MR1
86                 ? context.getResources().getStringArray(R.array.genre_labels_l)
87                 : context.getResources().getStringArray(R.array.genre_labels_l_mr1);
88         if (items.length != CANONICAL_GENRES.length) {
89             throw new IllegalArgumentException("Genre data mismatch");
90         }
91         return items;
92     }
93 
94     /**
95      * Returns the number of genres including all channels.
96      */
97     public static int getGenreCount() {
98         return CANONICAL_GENRES.length;
99     }
100 
101     /**
102      * Returns the canonical genre for the given id.
103      * If the id is invalid, {@code null} will be returned instead.
104      */
105     public static String getCanonicalGenre(int id) {
106         if (id < 0 || id >= CANONICAL_GENRES.length) {
107             return null;
108         }
109         return CANONICAL_GENRES[id];
110     }
111 
112     /**
113      * Returns id for the given canonical genre.
114      * If the genre is invalid, {@link #ID_ALL_CHANNELS} will be returned instead.
115      */
116     public static int getId(String canonicalGenre) {
117         if (canonicalGenre == null) {
118             return ID_ALL_CHANNELS;
119         }
120         for (int i = 1; i < CANONICAL_GENRES.length; ++i) {
121             if (CANONICAL_GENRES[i].equals(canonicalGenre)) {
122                 return i;
123             }
124         }
125         return ID_ALL_CHANNELS;
126     }
127 }
128