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 
SeekbarLineItem(CharSequence title)54     public SeekbarLineItem(CharSequence title) {
55         mTitle = title;
56     }
57 
58     @Override
getType()59     public int getType() {
60         return SEEKBAR_TYPE;
61     }
62 
63     @Override
bindViewHolder(ViewHolder viewHolder)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 
ViewHolder(View view)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 
createViewHolder(ViewGroup parent)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
getDesc()90     public CharSequence getDesc() {
91         return null;
92     }
93 
getInitialSeekbarValue()94     public abstract int getInitialSeekbarValue();
95 
getMaxSeekbarValue()96     public abstract int getMaxSeekbarValue();
97 
onSeekbarChanged(int progress)98     public abstract void onSeekbarChanged(int progress);
99 }
100