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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.annotation.DrawableRes;
     20 import android.content.Context;
     21 import android.support.v7.widget.RecyclerView;
     22 import android.view.LayoutInflater;
     23 import android.view.View;
     24 import android.view.ViewGroup;
     25 import android.widget.ImageView;
     26 import android.widget.Switch;
     27 import android.widget.TextView;
     28 
     29 import com.android.car.settings.R;
     30 
     31 /**
     32  * Contains logic for a line item represents title text, description text and a toggle widget.
     33  */
     34 public abstract class IconToggleLineItem
     35         extends TypedPagedListAdapter.LineItem<IconToggleLineItem.ViewHolder> {
     36     protected final Context mContext;
     37     private final CharSequence mTitle;
     38     protected IconUpdateListener mIconUpdateListener;
     39 
     40     public interface IconUpdateListener {
     41         void onUpdateIcon(@DrawableRes int iconRes);
     42     }
     43 
     44     private final View.OnClickListener mOnClickListener = v -> onClicked();
     45 
     46     private final Switch.OnCheckedChangeListener mOnCheckedChangeListener =
     47             (view, isChecked) -> onToggleClicked(isChecked);
     48 
     49     public IconToggleLineItem(CharSequence title, Context context) {
     50         mTitle = title;
     51         mContext = context;
     52     }
     53 
     54     public int getType() {
     55         return ICON_TOGGLE_TYPE;
     56     }
     57 
     58     public void bindViewHolder(ViewHolder viewHolder) {
     59         viewHolder.title.setText(mTitle);
     60         viewHolder.summary.setText(getDesc());
     61         viewHolder.toggle.setChecked(isChecked());
     62         viewHolder.onUpdateIcon(getIcon());
     63         viewHolder.itemView.setOnClickListener(mOnClickListener);
     64         viewHolder.toggle.setOnCheckedChangeListener(mOnCheckedChangeListener);
     65         mIconUpdateListener = viewHolder;
     66     }
     67 
     68     static class ViewHolder extends RecyclerView.ViewHolder implements IconUpdateListener {
     69         public final ImageView icon;
     70         public final TextView title;
     71         public final TextView summary;
     72         public final Switch toggle;
     73 
     74         public ViewHolder(View itemView) {
     75             super(itemView);
     76             icon = (ImageView) itemView.findViewById(R.id.icon);
     77             title = (TextView) itemView.findViewById(R.id.title);
     78             summary = (TextView) itemView.findViewById(R.id.desc);
     79             toggle = (Switch) itemView.findViewById(R.id.toggle_switch);
     80         }
     81 
     82         @Override
     83         public void onUpdateIcon(@DrawableRes int iconRes) {
     84             icon.setImageResource(iconRes);
     85         }
     86     }
     87 
     88     public static RecyclerView.ViewHolder createViewHolder(ViewGroup parent) {
     89         View v = LayoutInflater.from(parent.getContext())
     90                 .inflate(R.layout.icon_toggle_line_item, parent, false);
     91         return new ViewHolder(v);
     92     }
     93 
     94     /**
     95      * Called when any part of the line is clicked.
     96      * @param isChecked the state of the switch widget at the time of click.
     97      */
     98     public abstract void onToggleClicked(boolean isChecked);
     99 
    100     /**
    101      * called when anywhere other than the toggle on the line item got clicked.
    102      */
    103     public abstract void onClicked();
    104 
    105     public abstract boolean isChecked();
    106 
    107     public abstract @DrawableRes int getIcon();
    108 
    109     @Override
    110     public boolean isClickable() {
    111         return true;
    112     }
    113 }
    114