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      1 /*
      2 * Copyright (C) 2014 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.example.android.directoryselection;
     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 
     26 import java.util.List;
     27 
     28 /**
     29  * Provide views to RecyclerView with the directory entries.
     30  */
     31 public class DirectoryEntryAdapter extends RecyclerView.Adapter<DirectoryEntryAdapter.ViewHolder> {
     32 
     33     static final String DIRECTORY_MIME_TYPE = "vnd.android.document/directory";
     34     private List<DirectoryEntry> mDirectoryEntries;
     35 
     36     /**
     37      * Provide a reference to the type of views that you are using (custom ViewHolder)
     38      */
     39     public static class ViewHolder extends RecyclerView.ViewHolder {
     40         private final TextView mFileName;
     41         private final TextView mMimeType;
     42         private final ImageView mImageView;
     43 
     44         public ViewHolder(View v) {
     45             super(v);
     46             mFileName = (TextView) v.findViewById(R.id.textview_filename);
     47             mMimeType = (TextView) v.findViewById(R.id.textview_mimetype);
     48             mImageView = (ImageView) v.findViewById(R.id.entry_image);
     49         }
     50 
     51         public TextView getFileName() {
     52             return mFileName;
     53         }
     54 
     55         public TextView getMimeType() {
     56             return mMimeType;
     57         }
     58 
     59         public ImageView getImageView() {
     60             return mImageView;
     61         }
     62     }
     63 
     64     /**
     65      * Initialize the directory entries of the Adapter.
     66      *
     67      * @param directoryEntries an array of {@link DirectoryEntry}.
     68      */
     69     public DirectoryEntryAdapter(List<DirectoryEntry> directoryEntries) {
     70         mDirectoryEntries = directoryEntries;
     71     }
     72 
     73     @Override
     74     public ViewHolder onCreateViewHolder(ViewGroup viewGroup, int viewType) {
     75         View v = LayoutInflater.from(viewGroup.getContext())
     76                 .inflate(R.layout.directory_item, viewGroup, false);
     77         return new ViewHolder(v);
     78     }
     79 
     80     @Override
     81     public void onBindViewHolder(ViewHolder viewHolder, final int position) {
     82         viewHolder.getFileName().setText(mDirectoryEntries.get(position).fileName);
     83         viewHolder.getMimeType().setText(mDirectoryEntries.get(position).mimeType);
     84 
     85         if (DIRECTORY_MIME_TYPE.equals(mDirectoryEntries.get(position).mimeType)) {
     86             viewHolder.getImageView().setImageResource(R.drawable.ic_folder_grey600_36dp);
     87         } else {
     88             viewHolder.getImageView().setImageResource(R.drawable.ic_description_grey600_36dp);
     89         }
     90     }
     91 
     92     @Override
     93     public int getItemCount() {
     94         return mDirectoryEntries.size();
     95     }
     96 
     97     public void setDirectoryEntries(List<DirectoryEntry> directoryEntries) {
     98         mDirectoryEntries = directoryEntries;
     99     }
    100 }
    101