content: /*
   * 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&mdash;for example, launching an
       * activity asking the user to authenticate first &mdash;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&mdash;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");
          }
      }
  }
  