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      1 /*
      2  * Copyright (C) 2017 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.car.settings.common;
     18 
     19 import android.support.v7.widget.RecyclerView;
     20 import android.view.LayoutInflater;
     21 import android.view.View;
     22 import android.view.ViewGroup;
     23 import android.widget.SeekBar;
     24 import android.widget.TextView;
     25 
     26 import com.android.car.settings.R;
     27 
     28 /**
     29  * Contains logic for a line item represents a description and a seekbar.
     30  */
     31 public abstract class SeekbarLineItem
     32         extends TypedPagedListAdapter.LineItem<SeekbarLineItem.ViewHolder> {
     33     private final CharSequence mTitle;
     34 
     35     private SeekBar.OnSeekBarChangeListener mOnSeekBarChangeListener =
     36             new SeekBar.OnSeekBarChangeListener() {
     37 
     38         @Override
     39         public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
     40             SeekbarLineItem.this.onSeekbarChanged(progress);
     41         }
     42 
     43         @Override
     44         public void onStartTrackingTouch(SeekBar seekBar) {
     45             // no-op
     46         }
     47 
     48         @Override
     49         public void onStopTrackingTouch(SeekBar seekBar) {
     50             // no-op
     51         }
     52     };
     53 
     54     public SeekbarLineItem(CharSequence title) {
     55         mTitle = title;
     56     }
     57 
     58     @Override
     59     public int getType() {
     60         return SEEKBAR_TYPE;
     61     }
     62 
     63     @Override
     64     public void bindViewHolder(ViewHolder viewHolder) {
     65         viewHolder.titleView.setText(mTitle);
     66         viewHolder.seekBar.setMax(getMaxSeekbarValue());
     67         viewHolder.seekBar.setProgress(getInitialSeekbarValue());
     68         viewHolder.seekBar.setOnSeekBarChangeListener(mOnSeekBarChangeListener);
     69     }
     70 
     71     static class ViewHolder extends RecyclerView.ViewHolder {
     72         final TextView titleView;
     73         final SeekBar seekBar;
     74 
     75         public ViewHolder(View view) {
     76             super(view);
     77             titleView = (TextView) view.findViewById(R.id.title);
     78             seekBar = (SeekBar) view.findViewById(R.id.seekbar);
     79         }
     80     }
     81 
     82     public static RecyclerView.ViewHolder createViewHolder(ViewGroup parent) {
     83         View v = LayoutInflater.from(parent.getContext())
     84                 .inflate(R.layout.seekbar_line_item, parent, false);
     85         return new ViewHolder(v);
     86     }
     87 
     88     // Seekbar Line item does not have description field for now.
     89     @Override
     90     public CharSequence getDesc() {
     91         return null;
     92     }
     93 
     94     public abstract int getInitialSeekbarValue();
     95 
     96     public abstract int getMaxSeekbarValue();
     97 
     98     public abstract void onSeekbarChanged(int progress);
     99 }
    100