Home | History | Annotate | Download | only in autofill 
      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 android.service.autofill;
     18 
     19 import android.annotation.Nullable;
     20 import android.app.Activity;
     21 import android.os.RemoteException;
     22 
     23 /**
     24  * Handles autofill requests from the {@link AutofillService} into the {@link Activity} being
     25  * autofilled.
     26  */
     27 public final class FillCallback {
     28     private final IFillCallback mCallback;
     29     private final int mRequestId;
     30     private boolean mCalled;
     31 
     32     /** @hide */
     33     public FillCallback(IFillCallback callback, int requestId) {
     34         mCallback = callback;
     35         mRequestId = requestId;
     36     }
     37 
     38     /**
     39      * Notifies the Android System that an
     40      * {@link AutofillService#onFillRequest(FillRequest, android.os.CancellationSignal,
     41      * FillCallback)} was successfully fulfilled by the service.
     42      *
     43      * @param response autofill information for that activity, or {@code null} when the activity
     44      * cannot be autofilled (for example, if it only contains read-only fields). See
     45      * {@link FillResponse} for examples.
     46      */
     47     public void onSuccess(@Nullable FillResponse response) {
     48         assertNotCalled();
     49         mCalled = true;
     50 
     51         if (response != null) {
     52             response.setRequestId(mRequestId);
     53         }
     54 
     55         try {
     56             mCallback.onSuccess(response);
     57         } catch (RemoteException e) {
     58             e.rethrowAsRuntimeException();
     59         }
     60     }
     61 
     62     /**
     63      * Notifies the Android System that an
     64      * {@link AutofillService#onFillRequest(FillRequest, android.os.CancellationSignal,
     65      * FillCallback)} could not be fulfilled by the service.
     66      *
     67      * @param message error message to be displayed to the user.
     68      */
     69     public void onFailure(@Nullable CharSequence message) {
     70         assertNotCalled();
     71         mCalled = true;
     72         try {
     73             mCallback.onFailure(mRequestId, message);
     74         } catch (RemoteException e) {
     75             e.rethrowAsRuntimeException();
     76         }
     77     }
     78 
     79     private void assertNotCalled() {
     80         if (mCalled) {
     81             throw new IllegalStateException("Already called");
     82         }
     83     }
     84 }
     85