Home | History | Annotate | Download | only in sidepanel 
      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.text.TextUtils;
     21 import android.view.KeyEvent;
     22 
     23 import com.android.tv.R;
     24 import com.android.tv.util.Utils;
     25 
     26 import java.util.ArrayList;
     27 import java.util.List;
     28 
     29 public class MultiAudioFragment extends SideFragment {
     30     private static final String TRACKER_LABEL = "multi-audio";
     31     private int mInitialSelectedPosition = INVALID_POSITION;
     32     private String mSelectedTrackId;
     33     private String mFocusedTrackId;
     34 
     35     public MultiAudioFragment() {
     36         super(KeyEvent.KEYCODE_MEDIA_AUDIO_TRACK, KeyEvent.KEYCODE_A);
     37     }
     38 
     39     @Override
     40     protected String getTitle() {
     41         return getString(R.string.side_panel_title_multi_audio);
     42     }
     43 
     44     @Override
     45     public String getTrackerLabel() {
     46         return TRACKER_LABEL;
     47     }
     48 
     49     @Override
     50     protected List<Item> getItemList() {
     51         List<TvTrackInfo> tracks = getMainActivity().getTracks(TvTrackInfo.TYPE_AUDIO);
     52         mSelectedTrackId = getMainActivity().getSelectedTrack(TvTrackInfo.TYPE_AUDIO);
     53 
     54         List<Item> items = new ArrayList<>();
     55         if (tracks != null) {
     56             boolean needToShowSampleRate = Utils.needToShowSampleRate(getActivity(), tracks);
     57             int pos = 0;
     58             for (final TvTrackInfo track : tracks) {
     59                 RadioButtonItem item = new MultiAudioOptionItem(
     60                         Utils.getMultiAudioString(getActivity(), track, needToShowSampleRate),
     61                         track.getId());
     62                 if (track.getId().equals(mSelectedTrackId)) {
     63                     item.setChecked(true);
     64                     mInitialSelectedPosition = pos;
     65                     mSelectedTrackId = mFocusedTrackId = track.getId();
     66                 }
     67                 items.add(item);
     68                 ++pos;
     69             }
     70         }
     71         return items;
     72     }
     73 
     74     @Override
     75     public void onResume() {
     76         super.onResume();
     77         if (mInitialSelectedPosition != INVALID_POSITION) {
     78             setSelectedPosition(mInitialSelectedPosition);
     79         }
     80     }
     81 
     82     private class MultiAudioOptionItem extends RadioButtonItem {
     83         private final String mTrackId;
     84 
     85         private MultiAudioOptionItem(String title, String trackId) {
     86             super(title);
     87             mTrackId = trackId;
     88         }
     89 
     90         @Override
     91         protected void onSelected() {
     92             super.onSelected();
     93             mSelectedTrackId = mFocusedTrackId = mTrackId;
     94             getMainActivity().selectAudioTrack(mTrackId);
     95             closeFragment();
     96         }
     97 
     98         @Override
     99         protected void onFocused() {
    100             super.onFocused();
    101             mFocusedTrackId = mTrackId;
    102             getMainActivity().selectAudioTrack(mTrackId);
    103         }
    104     }
    105 
    106     @Override
    107     public void onDetach() {
    108         if (!TextUtils.equals(mSelectedTrackId, mFocusedTrackId)) {
    109             getMainActivity().selectAudioTrack(mSelectedTrackId);
    110         }
    111         super.onDetach();
    112     }
    113 }
    114