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/*
* Copyright (C) 2015 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.tv.ui.sidepanel;
import android.media.tv.TvTrackInfo;
import android.os.Bundle;
import android.view.KeyEvent;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import com.android.tv.R;
import com.android.tv.util.CaptionSettings;
import com.android.tv.util.Utils;
import java.util.ArrayList;
import java.util.List;
import java.util.Locale;
public class ClosedCaptionFragment extends SideFragment {
private static final String TRACKER_LABEL ="closed caption" ;
private boolean mResetClosedCaption;
private int mClosedCaptionOption;
private String mClosedCaptionLanguage;
private String mClosedCaptionTrackId;
private ClosedCaptionOptionItem mSelectedItem;
private List<Item> mItems;
private boolean mPaused;
public ClosedCaptionFragment() {
super(KeyEvent.KEYCODE_CAPTIONS, KeyEvent.KEYCODE_S);
}
@Override
protected String getTitle() {
return getString(R.string.side_panel_title_closed_caption);
}
@Override
public String getTrackerLabel() {
return TRACKER_LABEL;
}
@Override
protected List<Item> getItemList() {
CaptionSettings captionSettings = getMainActivity().getCaptionSettings();
mResetClosedCaption = true;
mClosedCaptionOption = captionSettings.getEnableOption();
mClosedCaptionLanguage = captionSettings.getLanguage();
mClosedCaptionTrackId = captionSettings.getTrackId();
mItems = new ArrayList<>();
mSelectedItem = null;
List<TvTrackInfo> tracks = getMainActivity().getTracks(TvTrackInfo.TYPE_SUBTITLE);
if (tracks != null && !tracks.isEmpty()) {
String trackId = captionSettings.isEnabled() ?
getMainActivity().getSelectedTrack(TvTrackInfo.TYPE_SUBTITLE) : null;
boolean isEnabled = trackId != null;
ClosedCaptionOptionItem item = new ClosedCaptionOptionItem(
getString(R.string.closed_caption_option_item_off),
CaptionSettings.OPTION_OFF, null, null);
// Pick 'Off' as default because we may fail to find the matching language.
mSelectedItem = item;
if (!isEnabled) {
item.setChecked(true);
}
mItems.add(item);
for (final TvTrackInfo track : tracks) {
item = new ClosedCaptionOptionItem(getLabel(track),
CaptionSettings.OPTION_ON, track.getId(), track.getLanguage());
if (isEnabled && track.getId().equals(trackId)) {
item.setChecked(true);
mSelectedItem = item;
}
mItems.add(item);
}
}
if (getMainActivity().hasCaptioningSettingsActivity()) {
mItems.add(new ActionItem(getString(R.string.closed_caption_system_settings),
getString(R.string.closed_caption_system_settings_description)) {
@Override
protected void onSelected() {
getMainActivity().startSystemCaptioningSettingsActivity();
}
@Override
protected void onFocused() {
super.onFocused();
if (!mPaused && mSelectedItem != null) {
getMainActivity().selectSubtitleTrack(
mSelectedItem.mOption, mSelectedItem.mTrackId);
}
}
});
}
return mItems;
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
return super.onCreateView(inflater, container, savedInstanceState);
}
@Override
public void onResume() {
super.onResume();
if (mPaused) {
// Apply system's closed caption settings to the UI.
CaptionSettings captionSettings = getMainActivity().getCaptionSettings();
mClosedCaptionOption = CaptionSettings.OPTION_SYSTEM;
mClosedCaptionLanguage = captionSettings.getSystemLanguage();
ClosedCaptionOptionItem selectedItem = null;
if (captionSettings.isSystemSettingEnabled()) {
for (Item item : mItems) {
if (!(item instanceof ClosedCaptionOptionItem)) {
continue;
}
ClosedCaptionOptionItem captionItem = (ClosedCaptionOptionItem) item;
if (Utils.isEqualLanguage(captionItem.mLanguage, mClosedCaptionLanguage)) {
selectedItem = captionItem;
break;
}
}
}
if (mSelectedItem != null) {
mSelectedItem.setChecked(false);
}
if (selectedItem == null && mItems.get(0) instanceof ClosedCaptionOptionItem) {
selectedItem = (ClosedCaptionOptionItem) mItems.get(0);
}
if (selectedItem != null) {
selectedItem.setChecked(true);
}
// We shouldn't call MainActivity.selectSubtitleTrack() here because
// 1. Tracks are not available because video is just started at this moment.
// 2. MainActivity will apply system settings when video's tracks are available.
mSelectedItem = selectedItem;
}
mPaused = false;
}
@Override
public void onPause() {
super.onPause();
mPaused = true;
}
@Override
public void onDestroyView() {
if (mResetClosedCaption) {
getMainActivity().selectSubtitleLanguage(mClosedCaptionOption, mClosedCaptionLanguage,
mClosedCaptionTrackId);
}
super.onDestroyView();
}
private String getLabel(TvTrackInfo track) {
if (track.getLanguage() != null) {
return new Locale(track.getLanguage()).getDisplayName();
}
return getString(R.string.default_language);
}
private class ClosedCaptionOptionItem extends RadioButtonItem {
private final int mOption;
private final String mTrackId;
private final String mLanguage;
private ClosedCaptionOptionItem(String title, int option, String trackId, String language) {
super(title);
mOption = option;
mTrackId = trackId;
mLanguage = language;
}
@Override
protected void onSelected() {
super.onSelected();
mSelectedItem = this;
getMainActivity().selectSubtitleTrack(mOption, mTrackId);
mResetClosedCaption = false;
closeFragment();
}
@Override
protected void onFocused() {
super.onFocused();
getMainActivity().selectSubtitleTrack(mOption, mTrackId);
}
}
}
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