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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.text.TextUtils;
     20 import android.view.View;
     21 import android.widget.TextView;
     22 
     23 import com.android.tv.R;
     24 import com.android.tv.data.Channel;
     25 import com.android.tv.data.ChannelDataManager;
     26 import com.android.tv.data.ChannelDataManager.ChannelListener;
     27 import com.android.tv.data.OnCurrentProgramUpdatedListener;
     28 import com.android.tv.data.Program;
     29 import com.android.tv.data.ProgramDataManager;
     30 
     31 public 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