1 /*
2  * Copyright (C) 2018 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.documentsui.roots;
18 
19 import android.app.Activity;
20 import android.net.Uri;
21 
22 import com.android.documentsui.AbstractActionHandler.CommonAddons;
23 import com.android.documentsui.base.RootInfo;
24 import com.android.documentsui.base.UserId;
25 
26 import java.util.Collection;
27 
28 public final class LoadFirstRootTask<T extends Activity & CommonAddons>
29         extends LoadRootTask<T> {
30 
LoadFirstRootTask( T activity, ProvidersAccess providers, Uri rootUri, LoadRootCallback callback)31     public LoadFirstRootTask(
32             T activity,
33             ProvidersAccess providers,
34             Uri rootUri,
35             LoadRootCallback callback) {
36         super(activity, providers, rootUri, UserId.DEFAULT_USER, callback);
37     }
38 
39     @Override
getRootId(Uri rootUri)40     protected String getRootId(Uri rootUri) {
41         final String authority = rootUri.getAuthority();
42         String rootId = null;
43 
44         final Collection<RootInfo> roots = mProviders.getRootsForAuthorityBlocking(
45                 UserId.DEFAULT_USER, authority);
46         if (!roots.isEmpty()) {
47             rootId = roots.iterator().next().rootId;
48         }
49 
50         return rootId;
51     }
52 }
53