SaveCallback.java revision e5f9c30688f0277505fb6b50ea385e5df6271ed8 
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.service.autofill;
18
19import android.app.Activity;
20import android.os.RemoteException;
21
22/**
23 * Handles save requests from the {@link AutofillService} into the {@link Activity} being
24 * autofilled.
25 */
26public final class SaveCallback {
27    private final ISaveCallback mCallback;
28    private boolean mCalled;
29
30    /** @hide */
31    SaveCallback(ISaveCallback callback) {
32        mCallback = callback;
33    }
34
35    /**
36     * Notifies the Android System that an
37     * {@link AutofillService#onSaveRequest(SaveRequest, SaveCallback)} was successfully fulfilled
38     * by the service.
39     *
40     * @throws RuntimeException if an error occurred while calling the Android System.
41     */
42    public void onSuccess() {
43        assertNotCalled();
44        mCalled = true;
45        try {
46            mCallback.onSuccess();
47        } catch (RemoteException e) {
48            e.rethrowAsRuntimeException();
49        }
50    }
51
52    /**
53     * Notifies the Android System that an
54     * {@link AutofillService#onSaveRequest(SaveRequest, SaveCallback)} could not be fulfilled
55     * by the service.
56     *
57     * @param message error message to be displayed to the user.
58     *
59     * @throws RuntimeException if an error occurred while calling the Android System.
60     */
61    public void onFailure(CharSequence message) {
62        assertNotCalled();
63        mCalled = true;
64        try {
65            mCallback.onFailure(message);
66        } catch (RemoteException e) {
67            e.rethrowAsRuntimeException();
68        }
69    }
70
71    private void assertNotCalled() {
72        if (mCalled) {
73            throw new IllegalStateException("Already called");
74        }
75    }
76}
77