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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.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 
     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 
     79     private GenreItems() { }
     80 
     81     /**
     82      * Returns array of all genre labels.
     83      */
     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