MoveJob.java revision 87156dc8aebbe8a186569db7e660a981beab830c 
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
17package com.android.documentsui.services;
18
19import static com.android.documentsui.services.FileOperationService.OPERATION_MOVE;
20
21import android.app.Notification;
22import android.app.Notification.Builder;
23import android.content.Context;
24import android.os.RemoteException;
25import android.provider.DocumentsContract;
26import android.provider.DocumentsContract.Document;
27import android.util.Log;
28
29import com.android.documentsui.R;
30import com.android.documentsui.model.DocumentInfo;
31import com.android.documentsui.model.DocumentStack;
32
33import java.util.List;
34
35final class MoveJob extends CopyJob {
36
37    private static final String TAG = "MoveJob";
38
39    /**
40     * Moves files to a destination identified by {@code destination}.
41     * Performs most work by delegating to CopyJob, then deleting
42     * a file after it has been copied.
43     *
44     * @see @link {@link Job} constructor for most param descriptions.
45     *
46     * @param srcs List of files to be moved.
47     */
48    MoveJob(Context service, Context appContext, Listener listener,
49            String id, DocumentStack destination, List<DocumentInfo> srcs) {
50        super(service, appContext, listener, OPERATION_MOVE, id, destination, srcs);
51    }
52
53    @Override
54    Builder createProgressBuilder() {
55        return super.createProgressBuilder(
56                service.getString(R.string.move_notification_title),
57                R.drawable.ic_menu_copy,
58                service.getString(android.R.string.cancel),
59                R.drawable.ic_cab_cancel);
60    }
61
62    @Override
63    public Notification getSetupNotification() {
64        return getSetupNotification(service.getString(R.string.move_preparing));
65    }
66
67    @Override
68    public Notification getProgressNotification() {
69        return getProgressNotification(R.string.copy_preparing);
70    }
71
72    @Override
73    Notification getFailureNotification() {
74        return getFailureNotification(
75                R.plurals.move_error_notification_title, R.drawable.ic_menu_copy);
76    }
77
78    @Override
79    boolean processDocument(DocumentInfo src, DocumentInfo dest) throws RemoteException {
80
81        // TODO: When optimized move kicks in, we're not making any progress updates. FIX IT!
82
83        // When moving within the same provider, try to use optimized moving.
84        // If not supported, then fallback to byte-by-byte copy/move.
85        if (src.authority.equals(dest.authority)) {
86            if ((src.flags & Document.FLAG_SUPPORTS_MOVE) != 0) {
87                if (DocumentsContract.moveDocument(getClient(src), src.derivedUri,
88                        dest.derivedUri) == null) {
89                    onFileFailed(src);
90                    return false;
91                }
92                return true;
93            }
94        }
95
96        // Moving virtual files by bytes is not supported. This is because, it would involve
97        // conversion, and the source file should not be deleted in such case (as it's a different
98        // file).
99        if (src.isVirtualDocument()) {
100            Log.w(TAG, "Cannot move virtual files byte by byte.");
101            onFileFailed(src);
102            return false;
103        }
104
105        // If we couldn't do an optimized copy...we fall back to vanilla byte copy.
106        boolean copied = byteCopyDocument(src, dest);
107
108        return copied && !isCanceled() && deleteDocument(src);
109    }
110
111    @Override
112    public String toString() {
113        return new StringBuilder()
114                .append("MoveJob")
115                .append("{")
116                .append("id=" + id)
117                .append("srcs=" + mSrcs)
118                .append(", destination=" + stack)
119                .append("}")
120                .toString();
121    }
122}
123