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 android.os.storage;
18
19import android.os.storage.DiskInfo;
20import android.os.storage.VolumeInfo;
21import android.os.storage.VolumeRecord;
22
23/**
24 * Callback class for receiving events from StorageManagerService.
25 *
26 * Don't change the existing transaction Ids as they could be used in the native code.
27 * When adding a new method, assign the next available transaction id.
28 *
29 * @hide - Applications should use {@link android.os.storage.StorageEventListener} class for
30 *         storage event callbacks.
31 */
32oneway interface IStorageEventListener {
33    /**
34     * Detection state of USB Mass Storage has changed
35     *
36     * @param available true if a UMS host is connected.
37     */
38    void onUsbMassStorageConnectionChanged(boolean connected) = 0;
39
40    /**
41     * Storage state has changed.
42     *
43     * @param path The volume mount path.
44     * @param oldState The old state of the volume.
45     * @param newState The new state of the volume. Note: State is one of the
46     *            values returned by Environment.getExternalStorageState()
47     */
48    void onStorageStateChanged(in String path, in String oldState, in String newState) = 1;
49
50    void onVolumeStateChanged(in VolumeInfo vol, int oldState, int newState) = 2;
51
52    void onVolumeRecordChanged(in VolumeRecord rec) = 3;
53
54    void onVolumeForgotten(in String fsUuid) = 4;
55
56    void onDiskScanned(in DiskInfo disk, int volumeCount) = 5;
57
58    void onDiskDestroyed(in DiskInfo disk) = 6;
59
60    /**
61     * Don't change the existing transaction Ids as they could be used in the native code.
62     * When adding a new method, assign the next available transaction id.
63     */
64}