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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.TvInputInfo;
     20 import android.os.Bundle;
     21 import android.text.TextUtils;
     22 import android.util.Log;
     23 import android.view.LayoutInflater;
     24 import android.view.View;
     25 import android.view.ViewGroup;
     26 
     27 import com.android.tv.R;
     28 import com.android.tv.util.PipInputManager;
     29 import com.android.tv.util.PipInputManager.PipInput;
     30 
     31 import java.util.ArrayList;
     32 import java.util.List;
     33 import java.util.Objects;
     34 
     35 public class PipInputSelectorFragment extends SideFragment {
     36     private static final String TAG = "PipInputSelector";
     37     private static final String TRACKER_LABEL = "PIP input source";
     38 
     39     private final List<Item> mInputItems = new ArrayList<>();
     40     private PipInputManager mPipInputManager;
     41     private PipInput mInitialPipInput;
     42     private boolean mSelected;
     43 
     44     private final PipInputManager.Listener mPipInputListener = new PipInputManager.Listener() {
     45         @Override
     46         public void onPipInputStateUpdated() {
     47             notifyDataSetChanged();
     48         }
     49 
     50         @Override
     51         public void onPipInputListUpdated() {
     52             refreshInputList();
     53             setItems(mInputItems);
     54         }
     55     };
     56 
     57     @Override
     58     public View onCreateView(LayoutInflater inflater, ViewGroup container,
     59             Bundle savedInstanceState) {
     60         mPipInputManager = getMainActivity().getPipInputManager();
     61         mPipInputManager.addListener(mPipInputListener);
     62         getMainActivity().startShrunkenTvView(false, false);
     63         return super.onCreateView(inflater, container, savedInstanceState);
     64     }
     65 
     66     @Override
     67     public void onStart() {
     68         super.onStart();
     69         mInitialPipInput = mPipInputManager.getPipInput(getMainActivity().getPipChannel());
     70         if (mInitialPipInput == null) {
     71             Log.w(TAG, "PIP should be on");
     72             closeFragment();
     73         }
     74         int count = 0;
     75         for (Item item : mInputItems) {
     76             InputItem inputItem = (InputItem) item;
     77             if (Objects.equals(inputItem.mPipInput, mInitialPipInput)) {
     78                 setSelectedPosition(count);
     79                 break;
     80             }
     81             ++count;
     82         }
     83     }
     84 
     85     @Override
     86     public void onDestroyView() {
     87         super.onDestroyView();
     88         mPipInputManager.removeListener(mPipInputListener);
     89         if (!mSelected) {
     90             getMainActivity().tuneToChannelForPip(mInitialPipInput.getChannel());
     91         }
     92         getMainActivity().endShrunkenTvView();
     93     }
     94 
     95     @Override
     96     protected String getTitle() {
     97         return getString(R.string.side_panel_title_pip_input_source);
     98     }
     99 
    100     @Override
    101     public String getTrackerLabel() {
    102         return TRACKER_LABEL;
    103     }
    104 
    105     @Override
    106     protected List<Item> getItemList() {
    107         refreshInputList();
    108         return mInputItems;
    109     }
    110 
    111     private void refreshInputList() {
    112         mInputItems.clear();
    113         for (PipInput input : mPipInputManager.getPipInputList(false)) {
    114             mInputItems.add(new InputItem(input));
    115         }
    116     }
    117 
    118     private class InputItem extends RadioButtonItem {
    119         private final PipInput mPipInput;
    120 
    121         private InputItem(PipInput input) {
    122             super(input.getLongLabel());
    123             mPipInput = input;
    124             setEnabled(isAvailable());
    125         }
    126 
    127         @Override
    128         protected void onUpdate() {
    129             super.onUpdate();
    130             setEnabled(mPipInput.isAvailable());
    131             setChecked(mPipInput == mInitialPipInput);
    132         }
    133 
    134         @Override
    135         protected void onFocused() {
    136             super.onFocused();
    137             if (isEnabled()) {
    138                 getMainActivity().tuneToChannelForPip(mPipInput.getChannel());
    139             }
    140         }
    141 
    142         @Override
    143         protected void onSelected() {
    144             super.onSelected();
    145             if (isEnabled()) {
    146                 mSelected = true;
    147                 closeFragment();
    148             }
    149         }
    150 
    151         private boolean isAvailable() {
    152             if (!mPipInput.isAvailable()) {
    153                 return false;
    154             }
    155 
    156             // If this input shares the same parent with the current main input, you cannot select
    157             // it. (E.g. two HDMI CEC devices that are connected to HDMI port 1 through an A/V
    158             // receiver.)
    159             PipInput pipInput = mPipInputManager.getPipInput(getMainActivity().getCurrentChannel());
    160             if (pipInput == null) {
    161                 return false;
    162             }
    163             TvInputInfo mainInputInfo = pipInput.getInputInfo();
    164             TvInputInfo pipInputInfo = mPipInput.getInputInfo();
    165             return mainInputInfo == null || pipInputInfo == null
    166                     || !TextUtils.equals(mainInputInfo.getId(), pipInputInfo.getId())
    167                     && !TextUtils.equals(mainInputInfo.getParentId(), pipInputInfo.getParentId());
    168         }
    169     }
    170 }
    171