content: /*
   * Copyright (C) 2017 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.annotation.TestApi;
  import android.view.autofill.AutofillId;
  import android.view.autofill.AutofillValue;
  
  /**
   * Helper object used to obtain the value of a field in the screen being autofilled.
   *
   * @hide
   */
  @TestApi
  public interface ValueFinder {
  
      /**
       * Gets the value of a field as String, or {@code null} when not found.
       */
      @Nullable
      default String findByAutofillId(@NonNull AutofillId id) {
          final AutofillValue value = findRawValueByAutofillId(id);
          return (value == null || !value.isText()) ? null : value.getTextValue().toString();
      }
  
      /**
       * Gets the value of a field, or {@code null} when not found.
       */
      @Nullable
      AutofillValue findRawValueByAutofillId(@NonNull AutofillId id);
  }
  