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/*
* Copyright (C) 2016 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package android.service.autofill;
import android.annotation.NonNull;
import android.annotation.Nullable;
import android.app.Activity;
import android.content.IntentSender;
import android.os.RemoteException;
import android.util.Log;
import com.android.internal.util.Preconditions;
/**
* Handles save requests from the {@link AutofillService} into the {@link Activity} being
* autofilled.
*/
public final class SaveCallback {
private static final String TAG = "SaveCallback";
private final ISaveCallback mCallback;
private boolean mCalled;
/** @hide */
SaveCallback(ISaveCallback callback) {
mCallback = callback;
}
/**
* Notifies the Android System that an
* {@link AutofillService#onSaveRequest(SaveRequest, SaveCallback)} was successfully handled
* by the service.
*
* @throws IllegalStateException if this method, {@link #onSuccess(IntentSender)}, or
* {@link #onFailure(CharSequence)} was already called.
*/
public void onSuccess() {
onSuccessInternal(null);
}
/**
* Notifies the Android System that an
* {@link AutofillService#onSaveRequest(SaveRequest, SaveCallback)} was successfully handled
* by the service.
*
* <p>This method is useful when the service requires extra work—for example, launching an
* activity asking the user to authenticate first —before it can process the request,
* as the intent will be launched from the context of the activity being autofilled and hence
* will be part of that activity's stack.
*
* @param intentSender intent that will be launched from the context of activity being
* autofilled.
*
* @throws IllegalStateException if this method, {@link #onSuccess()},
* or {@link #onFailure(CharSequence)} was already called.
*/
public void onSuccess(@NonNull IntentSender intentSender) {
onSuccessInternal(Preconditions.checkNotNull(intentSender));
}
private void onSuccessInternal(@Nullable IntentSender intentSender) {
assertNotCalled();
mCalled = true;
try {
mCallback.onSuccess(intentSender);
} catch (RemoteException e) {
e.rethrowAsRuntimeException();
}
}
/**
* Notifies the Android System that an
* {@link AutofillService#onSaveRequest(SaveRequest, SaveCallback)} could not be handled
* by the service.
*
* <p>This method is just used for logging purposes, the Android System won't call the service
* again in case of failures—if you need to recover from the failure, just save the
* {@link SaveRequest} and try again later.
*
* <p><b>Note: </b>for apps targeting {@link android.os.Build.VERSION_CODES#Q} or higher, this
* method just logs the message on {@code logcat}; for apps targetting older SDKs, it also
* displays the message to user using a {@link android.widget.Toast}.
*
* @param message error message. <b>Note: </b> this message should <b>not</b> contain PII
* (Personally Identifiable Information, such as username or email address).
*
* @throws IllegalStateException if this method, {@link #onSuccess()},
* or {@link #onSuccess(IntentSender)} was already called.
*/
public void onFailure(CharSequence message) {
Log.w(TAG, "onFailure(): " + message);
assertNotCalled();
mCalled = true;
try {
mCallback.onFailure(message);
} catch (RemoteException e) {
e.rethrowAsRuntimeException();
}
}
private void assertNotCalled() {
if (mCalled) {
throw new IllegalStateException("Already called");
}
}
}
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