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
17package com.android.car.list;
18
19import android.annotation.DrawableRes;
20import android.support.v7.widget.RecyclerView;
21import android.view.LayoutInflater;
22import android.view.View;
23import android.view.ViewGroup;
24import android.widget.ImageView;
25import android.widget.SeekBar;
26import android.widget.TextView;
27
28import com.android.car.list.R;
29
30/**
31 * Contains logic for a line item represents a description and a seekbar.
32 */
33public abstract class SeekbarLineItem
34        extends TypedPagedListAdapter.LineItem<SeekbarLineItem.ViewHolder> {
35    private final CharSequence mTitle;
36    @DrawableRes
37    private final Integer mIconResId;
38
39    private SeekBar.OnSeekBarChangeListener mOnSeekBarChangeListener =
40            new SeekBar.OnSeekBarChangeListener() {
41
42        @Override
43        public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
44            SeekbarLineItem.this.onSeekbarChanged(progress, fromUser);
45        }
46
47        @Override
48        public void onStartTrackingTouch(SeekBar seekBar) {
49            // no-op
50        }
51
52        @Override
53        public void onStopTrackingTouch(SeekBar seekBar) {
54            // no-op
55        }
56    };
57
58    public SeekbarLineItem(CharSequence title) {
59        this(title, null);
60    }
61
62    public SeekbarLineItem(CharSequence title, Integer iconResId) {
63        mTitle = title;
64        mIconResId = iconResId;
65    }
66
67    @Override
68    public int getType() {
69        return SEEKBAR_TYPE;
70    }
71
72    @Override
73    public void bindViewHolder(ViewHolder viewHolder) {
74        super.bindViewHolder(viewHolder);
75        viewHolder.titleView.setText(mTitle);
76        viewHolder.seekBar.setMax(getMaxSeekbarValue());
77        viewHolder.seekBar.setProgress(getSeekbarValue());
78        viewHolder.seekBar.setOnSeekBarChangeListener(mOnSeekBarChangeListener);
79        if (mIconResId != null) {
80            viewHolder.iconView.setVisibility(View.VISIBLE);
81            viewHolder.iconView.setImageResource(mIconResId);
82        }
83    }
84
85    static class ViewHolder extends RecyclerView.ViewHolder {
86        final TextView titleView;
87        final SeekBar seekBar;
88        final ImageView iconView;
89
90        public ViewHolder(View view) {
91            super(view);
92            titleView = view.findViewById(R.id.title);
93            seekBar = view.findViewById(R.id.seekbar);
94            iconView = view.findViewById(R.id.icon);
95        }
96    }
97
98    public static RecyclerView.ViewHolder createViewHolder(ViewGroup parent) {
99        return new ViewHolder(LayoutInflater.from(parent.getContext())
100                .inflate(R.layout.seekbar_line_item, parent, false));
101    }
102
103    // Seekbar Line item does not have description field for now.
104    @Override
105    public CharSequence getDesc() {
106        return null;
107    }
108
109    public abstract int getSeekbarValue();
110
111    public abstract int getMaxSeekbarValue();
112
113    public abstract void onSeekbarChanged(int progress, boolean fromUser);
114
115    @Override
116    public boolean isClickable() {
117        return true;
118    }
119
120    @Override
121    public boolean isExpandable() {
122        return false;
123    }
124}
125