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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.ui.sidepanel;
     18 
     19 import android.media.tv.TvTrackInfo;
     20 import android.os.Bundle;
     21 import android.text.TextUtils;
     22 import android.view.KeyEvent;
     23 import android.view.LayoutInflater;
     24 import android.view.View;
     25 import android.view.ViewGroup;
     26 import com.android.tv.R;
     27 import com.android.tv.util.CaptionSettings;
     28 import java.util.ArrayList;
     29 import java.util.List;
     30 import java.util.Locale;
     31 
     32 public class ClosedCaptionFragment extends SideFragment {
     33     private static final String TRACKER_LABEL = "closed caption";
     34     private boolean mResetClosedCaption;
     35     private int mClosedCaptionOption;
     36     private String mClosedCaptionLanguage;
     37     private String mClosedCaptionTrackId;
     38     private ClosedCaptionOptionItem mSelectedItem;
     39 
     40     public ClosedCaptionFragment() {
     41         super(KeyEvent.KEYCODE_CAPTIONS, KeyEvent.KEYCODE_S);
     42     }
     43 
     44     @Override
     45     protected String getTitle() {
     46         return getString(R.string.side_panel_title_closed_caption);
     47     }
     48 
     49     @Override
     50     public String getTrackerLabel() {
     51         return TRACKER_LABEL;
     52     }
     53 
     54     @Override
     55     protected List<Item> getItemList() {
     56         CaptionSettings captionSettings = getMainActivity().getCaptionSettings();
     57         mResetClosedCaption = true;
     58         mClosedCaptionOption = captionSettings.getEnableOption();
     59         mClosedCaptionLanguage = captionSettings.getLanguage();
     60         mClosedCaptionTrackId = captionSettings.getTrackId();
     61 
     62         List<Item> items = new ArrayList<>();
     63         mSelectedItem = null;
     64 
     65         List<TvTrackInfo> tracks = getMainActivity().getTracks(TvTrackInfo.TYPE_SUBTITLE);
     66         if (tracks != null && !tracks.isEmpty()) {
     67             String selectedTrackId =
     68                     captionSettings.isEnabled()
     69                             ? getMainActivity().getSelectedTrack(TvTrackInfo.TYPE_SUBTITLE)
     70                             : null;
     71             ClosedCaptionOptionItem item = new ClosedCaptionOptionItem(null, null);
     72             items.add(item);
     73             if (selectedTrackId == null) {
     74                 mSelectedItem = item;
     75                 item.setChecked(true);
     76                 setSelectedPosition(0);
     77             }
     78             for (int i = 0; i < tracks.size(); i++) {
     79                 item = new ClosedCaptionOptionItem(tracks.get(i), i);
     80                 if (TextUtils.equals(selectedTrackId, tracks.get(i).getId())) {
     81                     mSelectedItem = item;
     82                     item.setChecked(true);
     83                     setSelectedPosition(i + 1);
     84                 }
     85                 items.add(item);
     86             }
     87         }
     88         if (getMainActivity().hasCaptioningSettingsActivity()) {
     89             items.add(
     90                     new ActionItem(
     91                             getString(R.string.closed_caption_system_settings),
     92                             getString(R.string.closed_caption_system_settings_description)) {
     93                         @Override
     94                         protected void onSelected() {
     95                             getMainActivity().startSystemCaptioningSettingsActivity();
     96                         }
     97 
     98                         @Override
     99                         protected void onFocused() {
    100                             super.onFocused();
    101                             if (mSelectedItem != null) {
    102                                 getMainActivity()
    103                                         .selectSubtitleTrack(
    104                                                 mSelectedItem.mOption, mSelectedItem.mTrackId);
    105                             }
    106                         }
    107                     });
    108         }
    109         return items;
    110     }
    111 
    112     @Override
    113     public View onCreateView(
    114             LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    115         return super.onCreateView(inflater, container, savedInstanceState);
    116     }
    117 
    118     @Override
    119     public void onDestroyView() {
    120         if (mResetClosedCaption) {
    121             getMainActivity()
    122                     .selectSubtitleLanguage(
    123                             mClosedCaptionOption, mClosedCaptionLanguage, mClosedCaptionTrackId);
    124         }
    125         super.onDestroyView();
    126     }
    127 
    128     private String getLabel(TvTrackInfo track, Integer trackIndex) {
    129         if (track == null) {
    130             return getString(R.string.closed_caption_option_item_off);
    131         } else if (track.getLanguage() != null) {
    132             return new Locale(track.getLanguage()).getDisplayName();
    133         }
    134         return getString(R.string.closed_caption_unknown_language, trackIndex + 1);
    135     }
    136 
    137     private class ClosedCaptionOptionItem extends RadioButtonItem {
    138         private final int mOption;
    139         private final String mTrackId;
    140 
    141         private ClosedCaptionOptionItem(TvTrackInfo track, Integer trackIndex) {
    142             super(getLabel(track, trackIndex));
    143             if (track == null) {
    144                 mOption = CaptionSettings.OPTION_OFF;
    145                 mTrackId = null;
    146             } else {
    147                 mOption = CaptionSettings.OPTION_ON;
    148                 mTrackId = track.getId();
    149             }
    150         }
    151 
    152         @Override
    153         protected void onSelected() {
    154             super.onSelected();
    155             mSelectedItem = this;
    156             getMainActivity().selectSubtitleTrack(mOption, mTrackId);
    157             mResetClosedCaption = false;
    158             closeFragment();
    159         }
    160 
    161         @Override
    162         protected void onFocused() {
    163             super.onFocused();
    164             getMainActivity().selectSubtitleTrack(mOption, mTrackId);
    165         }
    166     }
    167 }
    168