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