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.ImageView; 24 import android.widget.TextView; 25 import com.android.car.settings.R; 26 27 /** 28 * Contains logic for a line item represents text only view of a title and a description. 29 */ 30 public abstract class TextLineItem extends TypedPagedListAdapter.LineItem<TextLineItem.ViewHolder> { 31 protected final CharSequence mTitle; 32 33 protected View.OnClickListener mOnClickListener = (v) -> onClick(); 34 TextLineItem(CharSequence title)35 public TextLineItem(CharSequence title) { 36 mTitle = title; 37 } 38 39 @Override getType()40 public int getType() { 41 return TEXT_TYPE; 42 } 43 44 @Override bindViewHolder(ViewHolder viewHolder)45 public void bindViewHolder(ViewHolder viewHolder) { 46 viewHolder.titleView.setText(mTitle); 47 viewHolder.descView.setText(getDesc()); 48 viewHolder.itemView.setOnClickListener(mOnClickListener); 49 viewHolder.itemView.setEnabled(isEnabled()); 50 viewHolder.titleView.setEnabled(isEnabled()); 51 viewHolder.descView.setEnabled(isEnabled()); 52 viewHolder.rightArrow.setEnabled(isEnabled()); 53 viewHolder.rightArrow.setVisibility( 54 isExpandable() ? View.VISIBLE : View.INVISIBLE); 55 // set the dividerLine to INVISIBLE instead of GONE so the content of the line item 56 // don't need to shift. 57 viewHolder.dividerLine.setVisibility( 58 isClickable() && isEnabled() ? View.VISIBLE : View.INVISIBLE); 59 } 60 61 public static class ViewHolder extends RecyclerView.ViewHolder { 62 public final TextView titleView; 63 public final TextView descView; 64 final ImageView rightArrow; 65 public final View dividerLine; 66 ViewHolder(View view)67 public ViewHolder(View view) { 68 super(view); 69 titleView = (TextView) view.findViewById(R.id.title); 70 descView = (TextView) view.findViewById(R.id.desc); 71 rightArrow = (ImageView) view.findViewById(R.id.right_chevron); 72 dividerLine = view.findViewById(R.id.line_item_divider); 73 } 74 } 75 createViewHolder(ViewGroup parent)76 public static RecyclerView.ViewHolder createViewHolder(ViewGroup parent) { 77 View v = LayoutInflater.from(parent.getContext()) 78 .inflate(R.layout.text_line_item, parent, false); 79 return new ViewHolder(v); 80 } 81 onClick()82 public abstract void onClick(); 83 } 84