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      1 /*
      2  * Copyright (C) 2013 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.camera.data;
     18 
     19 import android.content.ContentResolver;
     20 import android.content.Context;
     21 import android.database.Cursor;
     22 import android.net.Uri;
     23 
     24 import com.android.camera.data.FilmstripContentQueries.CursorToFilmstripItemFactory;
     25 import com.android.camera.debug.Log;
     26 
     27 import java.util.List;
     28 
     29 public class PhotoItemFactory implements CursorToFilmstripItemFactory<PhotoItem> {
     30     private static final Log.Tag TAG = new Log.Tag("PhotoItemFact");
     31 
     32     private final Context mContext;
     33     private final GlideFilmstripManager mGlideManager;
     34     private final ContentResolver mContentResolver;
     35     private final PhotoDataFactory mPhotoDataFactory;
     36 
     37     public PhotoItemFactory(Context context, GlideFilmstripManager glideManager,
     38           ContentResolver contentResolver, PhotoDataFactory photoDataFactory) {
     39         mContext = context;
     40         mGlideManager = glideManager;
     41         mContentResolver = contentResolver;
     42         mPhotoDataFactory = photoDataFactory;
     43     }
     44 
     45     @Override
     46     public PhotoItem get(Cursor c) {
     47         FilmstripItemData data = mPhotoDataFactory.fromCursor(c);
     48         if (data != null) {
     49             return new PhotoItem(mContext, mGlideManager, data, this);
     50         } else {
     51             Log.w(TAG, "skipping item with null data, returning null for item");
     52             return null;
     53         }
     54     }
     55 
     56     public PhotoItem get(Uri uri) {
     57         PhotoItem newData = null;
     58         Cursor c = mContentResolver.query(uri, PhotoDataQuery.QUERY_PROJECTION,
     59               null, null, null);
     60         if (c != null) {
     61             if (c.moveToFirst()) {
     62                 newData = get(c);
     63             }
     64             c.close();
     65         }
     66 
     67         return newData;
     68     }
     69 
     70     /** Query for all the photo data items */
     71     public List<PhotoItem> queryAll() {
     72         return queryAll(PhotoDataQuery.CONTENT_URI, FilmstripItemBase.QUERY_ALL_MEDIA_ID);
     73     }
     74 
     75     /** Query for all the photo data items */
     76     public List<PhotoItem> queryAll(Uri uri, long lastId) {
     77         return FilmstripContentQueries
     78               .forCameraPath(mContentResolver, uri, PhotoDataQuery.QUERY_PROJECTION, lastId,
     79                     PhotoDataQuery.QUERY_ORDER, this);
     80     }
     81 
     82     /** Query for a single data item */
     83     public PhotoItem queryContentUri(Uri uri) {
     84         // TODO: Consider refactoring this, this approach may be slow.
     85         List<PhotoItem> newPhotos = queryAll(uri, FilmstripItemBase.QUERY_ALL_MEDIA_ID);
     86         if (newPhotos.isEmpty()) {
     87             return null;
     88         }
     89         return newPhotos.get(0);
     90     }
     91 }
     92