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.picker;
18 
19 import android.app.Activity;
20 
21 import com.android.documentsui.AbstractActionHandler.CommonAddons;
22 import com.android.documentsui.base.DocumentStack;
23 import com.android.documentsui.base.PairedTask;
24 import com.android.documentsui.base.State;
25 import com.android.documentsui.roots.ProvidersAccess;
26 
27 import java.util.function.Consumer;
28 
29 import javax.annotation.Nullable;
30 
31 /**
32  * Loads the last used path (stack) from Recents (history).
33  * The path selected is based on the calling package name. So the last
34  * path for an app like Gmail can be different than the last path
35  * for an app like DropBox.
36  */
37 final class LoadLastAccessedStackTask<T extends Activity & CommonAddons>
38         extends PairedTask<T, Void, DocumentStack> {
39 
40     private final LastAccessedStorage mLastAccessed;
41     private final State mState;
42     private final ProvidersAccess mProviders;
43     private final Consumer<DocumentStack> mCallback;
44 
LoadLastAccessedStackTask( T activity, LastAccessedStorage lastAccessed, State state, ProvidersAccess providers, Consumer<DocumentStack> callback)45     LoadLastAccessedStackTask(
46             T activity,
47             LastAccessedStorage lastAccessed,
48             State state,
49             ProvidersAccess providers,
50             Consumer<DocumentStack> callback) {
51         super(activity);
52         mLastAccessed = lastAccessed;
53         mProviders = providers;
54         mState = state;
55         mCallback = callback;
56     }
57 
58     @Override
run(Void... params)59     protected DocumentStack run(Void... params) {
60         return mLastAccessed.getLastAccessed(mOwner, mProviders, mState);
61     }
62 
63     @Override
finish(@ullable DocumentStack stack)64     protected void finish(@Nullable DocumentStack stack) {
65         mCallback.accept(stack);
66     }
67 }
68