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      1 /*
      2  * Copyright (C) 2016 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;
     18 
     19 import android.net.Uri;
     20 import android.provider.DocumentsContract;
     21 import android.util.Log;
     22 
     23 import com.android.documentsui.model.RootInfo;
     24 
     25 final class LoadRootTask extends PairedTask<BaseActivity, Void, RootInfo> {
     26     private static final String TAG = "RestoreRootTask";
     27 
     28     private final Uri mRootUri;
     29 
     30     public LoadRootTask(BaseActivity activity, Uri rootUri) {
     31         super(activity);
     32         mRootUri = rootUri;
     33     }
     34 
     35     @Override
     36     protected RootInfo run(Void... params) {
     37         String rootId = DocumentsContract.getRootId(mRootUri);
     38         return mOwner.mRoots.getRootOneshot(mRootUri.getAuthority(), rootId);
     39     }
     40 
     41     @Override
     42     protected void finish(RootInfo root) {
     43         mOwner.mState.restored = true;
     44 
     45         if (root != null) {
     46             mOwner.onRootPicked(root);
     47         } else {
     48             Log.w(TAG, "Failed to find root: " + mRootUri);
     49             mOwner.finish();
     50         }
     51     }
     52 }
     53