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.text.TextUtils;
20import android.view.View;
21import android.widget.TextView;
22
23import com.android.tv.R;
24import com.android.tv.data.Channel;
25import com.android.tv.data.ChannelDataManager;
26import com.android.tv.data.ChannelDataManager.ChannelListener;
27import com.android.tv.data.OnCurrentProgramUpdatedListener;
28import com.android.tv.data.Program;
29import com.android.tv.data.ProgramDataManager;
30
31public abstract class ChannelCheckItem extends CompoundButtonItem {
32    private final ChannelDataManager mChannelDataManager;
33    private final ProgramDataManager mProgramDataManager;
34    private Channel mChannel;
35    private TextView mProgramTitleView;
36    private TextView mChannelNumberView;
37    private final ChannelListener mChannelListener = new ChannelListener() {
38        @Override
39        public void onChannelRemoved(Channel channel) { }
40
41        @Override
42        public void onChannelUpdated(Channel channel) {
43            mChannel = channel;
44        }
45    };
46
47    private final OnCurrentProgramUpdatedListener mOnCurrentProgramUpdatedListener
48            = new OnCurrentProgramUpdatedListener() {
49        @Override
50        public void onCurrentProgramUpdated(long channelId, Program program) {
51            updateProgramTitle(program);
52        }
53    };
54
55    public ChannelCheckItem(Channel channel,
56            ChannelDataManager channelDataManager,
57            ProgramDataManager programDataManager) {
58        super(channel.getDisplayName(), "");
59        mChannel = channel;
60        mChannelDataManager = channelDataManager;
61        mProgramDataManager = programDataManager;
62    }
63
64    protected Channel getChannel() {
65        return mChannel;
66    }
67
68    @Override
69    protected int getResourceId() {
70        return R.layout.option_item_channel_check;
71    }
72
73    @Override
74    protected int getCompoundButtonId() {
75        return R.id.check_box;
76    }
77
78    @Override
79    protected int getTitleViewId() {
80        return R.id.channel_name;
81    }
82
83    @Override
84    protected int getDescriptionViewId() {
85        return R.id.program_title;
86    }
87
88    @Override
89    protected void onBind(View view) {
90        super.onBind(view);
91        mChannelNumberView = (TextView) view.findViewById(R.id.channel_number);
92        mProgramTitleView = (TextView) view.findViewById(R.id.program_title);
93        mChannelDataManager.addChannelListener(mChannel.getId(), mChannelListener);
94        mProgramDataManager.addOnCurrentProgramUpdatedListener(mChannel.getId(),
95                mOnCurrentProgramUpdatedListener);
96    }
97
98    @Override
99    protected void onUpdate() {
100        super.onUpdate();
101        mChannelNumberView.setText(getChannel().getDisplayNumber());
102        updateProgramTitle(mProgramDataManager.getCurrentProgram(mChannel.getId()));
103    }
104
105    @Override
106    protected void onUnbind() {
107        mChannelDataManager.removeChannelListener(mChannel.getId(), mChannelListener);
108        mProgramDataManager.removeOnCurrentProgramUpdatedListener(mChannel.getId(),
109                mOnCurrentProgramUpdatedListener);
110        mProgramTitleView = null;
111        mChannelNumberView = null;
112        super.onUnbind();
113    }
114
115    @Override
116    protected void onSelected() {
117        setChecked(!isChecked());
118    }
119
120    private void updateProgramTitle(Program program) {
121        String title = null;
122        if (program != null) {
123            title = program.getTitle();
124        }
125        if (TextUtils.isEmpty(title)) {
126            title = mProgramTitleView.getContext().getString(R.string.no_program_information);
127        }
128        mProgramTitleView.setText(title);
129    }
130}
131