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 import com.android.tv.R; 23 import com.android.tv.util.Utils; 24 import java.util.ArrayList; 25 import java.util.List; 26 27 public class MultiAudioFragment extends SideFragment { 28 private static final String TRACKER_LABEL = "multi-audio"; 29 private int mInitialSelectedPosition = INVALID_POSITION; 30 private String mSelectedTrackId; 31 private String mFocusedTrackId; 32 MultiAudioFragment()33 public MultiAudioFragment() { 34 super(KeyEvent.KEYCODE_MEDIA_AUDIO_TRACK, KeyEvent.KEYCODE_A); 35 } 36 37 @Override getTitle()38 protected String getTitle() { 39 return getString(R.string.side_panel_title_multi_audio); 40 } 41 42 @Override getTrackerLabel()43 public String getTrackerLabel() { 44 return TRACKER_LABEL; 45 } 46 47 @Override getItemList()48 protected List<Item> getItemList() { 49 List<TvTrackInfo> tracks = getMainActivity().getTracks(TvTrackInfo.TYPE_AUDIO); 50 mSelectedTrackId = getMainActivity().getSelectedTrack(TvTrackInfo.TYPE_AUDIO); 51 52 List<Item> items = new ArrayList<>(); 53 if (tracks != null) { 54 boolean needToShowSampleRate = Utils.needToShowSampleRate(getActivity(), tracks); 55 int pos = 0; 56 for (final TvTrackInfo track : tracks) { 57 RadioButtonItem item = 58 new MultiAudioOptionItem( 59 Utils.getMultiAudioString( 60 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 onResume()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 MultiAudioOptionItem(String title, String trackId)85 private MultiAudioOptionItem(String title, String trackId) { 86 super(title); 87 mTrackId = trackId; 88 } 89 90 @Override onSelected()91 protected void onSelected() { 92 super.onSelected(); 93 mSelectedTrackId = mFocusedTrackId = mTrackId; 94 getMainActivity().selectAudioTrack(mTrackId); 95 closeFragment(); 96 } 97 98 @Override onFocused()99 protected void onFocused() { 100 super.onFocused(); 101 mFocusedTrackId = mTrackId; 102 getMainActivity().selectAudioTrack(mTrackId); 103 } 104 } 105 106 @Override onDetach()107 public void onDetach() { 108 if (!TextUtils.equals(mSelectedTrackId, mFocusedTrackId)) { 109 getMainActivity().selectAudioTrack(mSelectedTrackId); 110 } 111 super.onDetach(); 112 } 113 } 114