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
17package com.android.tv.ui.sidepanel;
18
19import android.media.tv.TvInputInfo;
20import android.os.Bundle;
21import android.text.TextUtils;
22import android.util.Log;
23import android.view.LayoutInflater;
24import android.view.View;
25import android.view.ViewGroup;
26
27import com.android.tv.R;
28import com.android.tv.util.PipInputManager;
29import com.android.tv.util.PipInputManager.PipInput;
30
31import java.util.ArrayList;
32import java.util.List;
33import java.util.Objects;
34
35public 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