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.roots; 18 19 import static com.android.documentsui.base.SharedMinimal.DEBUG; 20 21 import android.app.Activity; 22 import android.net.Uri; 23 import android.provider.DocumentsContract; 24 import android.util.Log; 25 26 import com.android.documentsui.AbstractActionHandler.CommonAddons; 27 import com.android.documentsui.base.PairedTask; 28 import com.android.documentsui.base.RootInfo; 29 import com.android.documentsui.base.State; 30 31 public final class LoadRootTask<T extends Activity & CommonAddons> 32 extends PairedTask<T, Void, RootInfo> { 33 private static final String TAG = "LoadRootTask"; 34 35 private final State mState; 36 private final ProvidersAccess mProviders; 37 private final Uri mRootUri; 38 39 40 public LoadRootTask(T activity, ProvidersAccess providers, State state, Uri rootUri) { 41 super(activity); 42 mState = state; 43 mProviders = providers; 44 mRootUri = rootUri; 45 } 46 47 @Override 48 protected RootInfo run(Void... params) { 49 if (DEBUG) Log.d(TAG, "Loading root: " + mRootUri); 50 51 String rootId = DocumentsContract.getRootId(mRootUri); 52 return mProviders.getRootOneshot(mRootUri.getAuthority(), rootId); 53 } 54 55 @Override 56 protected void finish(RootInfo root) { 57 if (root != null) { 58 if (DEBUG) Log.d(TAG, "Loaded root: " + root); 59 mOwner.onRootPicked(root); 60 } else { 61 Log.w(TAG, "Failed to find root: " + mRootUri); 62 mOwner.finish(); 63 } 64 } 65 } 66
