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; 18 19 import android.content.Context; 20 import android.media.tv.TvTrackInfo; 21 import android.support.annotation.IntDef; 22 import android.util.SparseArray; 23 24 import com.android.tv.data.DisplayMode; 25 26 import java.lang.annotation.Retention; 27 import java.lang.annotation.RetentionPolicy; 28 import java.util.Locale; 29 30 /** 31 * The TvOptionsManager is responsible for keeping track of current TV options such as closed 32 * captions and display mode. Can be also used to create MenuAction items to control such options. 33 */ 34 public class TvOptionsManager { 35 @Retention(RetentionPolicy.SOURCE) 36 @IntDef({OPTION_CLOSED_CAPTIONS, OPTION_DISPLAY_MODE, OPTION_SYSTEMWIDE_PIP, OPTION_MULTI_AUDIO, 37 OPTION_MORE_CHANNELS, OPTION_DEVELOPER, OPTION_SETTINGS}) 38 public @interface OptionType {} 39 public static final int OPTION_CLOSED_CAPTIONS = 0; 40 public static final int OPTION_DISPLAY_MODE = 1; 41 public static final int OPTION_SYSTEMWIDE_PIP = 2; 42 public static final int OPTION_MULTI_AUDIO = 3; 43 public static final int OPTION_MORE_CHANNELS = 4; 44 public static final int OPTION_DEVELOPER = 5; 45 public static final int OPTION_SETTINGS = 6; 46 47 private final Context mContext; 48 private final SparseArray<OptionChangedListener> mOptionChangedListeners = new SparseArray<>(); 49 50 private String mClosedCaptionsLanguage; 51 private int mDisplayMode; 52 private String mMultiAudio; 53 TvOptionsManager(Context context)54 public TvOptionsManager(Context context) { 55 mContext = context; 56 } 57 58 /** 59 * Returns a suitable displayed string for the given option type under current settings. 60 * @param option the type of option, should be one of {@link OptionType}. 61 */ getOptionString(@ptionType int option)62 public String getOptionString(@OptionType int option) { 63 switch (option) { 64 case OPTION_CLOSED_CAPTIONS: 65 if (mClosedCaptionsLanguage == null) { 66 return mContext.getString(R.string.closed_caption_option_item_off); 67 } 68 return new Locale(mClosedCaptionsLanguage).getDisplayName(); 69 case OPTION_DISPLAY_MODE: 70 return ((MainActivity) mContext).getTvViewUiManager() 71 .isDisplayModeAvailable(mDisplayMode) 72 ? DisplayMode.getLabel(mDisplayMode, mContext) 73 : DisplayMode.getLabel(DisplayMode.MODE_NORMAL, mContext); 74 case OPTION_MULTI_AUDIO: 75 return mMultiAudio; 76 } 77 return ""; 78 } 79 80 /** 81 * Handles changing selection of closed caption. 82 */ onClosedCaptionsChanged(TvTrackInfo track, int trackIndex)83 public void onClosedCaptionsChanged(TvTrackInfo track, int trackIndex) { 84 mClosedCaptionsLanguage = (track == null) ? 85 null : (track.getLanguage() != null) ? track.getLanguage() 86 : mContext.getString(R.string.closed_caption_unknown_language, trackIndex + 1); 87 notifyOptionChanged(OPTION_CLOSED_CAPTIONS); 88 } 89 90 /** 91 * Handles changing selection of display mode. 92 */ onDisplayModeChanged(int displayMode)93 public void onDisplayModeChanged(int displayMode) { 94 mDisplayMode = displayMode; 95 notifyOptionChanged(OPTION_DISPLAY_MODE); 96 } 97 98 /** 99 * Handles changing selection of multi-audio. 100 */ onMultiAudioChanged(String multiAudio)101 public void onMultiAudioChanged(String multiAudio) { 102 mMultiAudio = multiAudio; 103 notifyOptionChanged(OPTION_MULTI_AUDIO); 104 } 105 notifyOptionChanged(@ptionType int option)106 private void notifyOptionChanged(@OptionType int option) { 107 OptionChangedListener listener = mOptionChangedListeners.get(option); 108 if (listener != null) { 109 listener.onOptionChanged(option, getOptionString(option)); 110 } 111 } 112 113 /** 114 * Sets listeners to changes of the given option type. 115 */ setOptionChangedListener(int option, OptionChangedListener listener)116 public void setOptionChangedListener(int option, OptionChangedListener listener) { 117 mOptionChangedListeners.put(option, listener); 118 } 119 120 /** 121 * An interface used to monitor option changes. 122 */ 123 public interface OptionChangedListener { onOptionChanged(@ptionType int optionType, String newString)124 void onOptionChanged(@OptionType int optionType, String newString); 125 } 126 }