1 /* 2 * Copyright (C) 2017 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 com.android.dialer.assisteddialing; 18 19 import android.annotation.TargetApi; 20 import android.os.Build.VERSION_CODES; 21 import android.support.annotation.NonNull; 22 import java.util.Optional; 23 24 /** The core interface for the AssistedDialingMediator. */ 25 public interface AssistedDialingMediator { 26 27 /** Returns {@code true} if the current client platform supports Assisted Dialing. */ isPlatformEligible()28 public boolean isPlatformEligible(); 29 30 /** Returns the country code in which the library thinks the user typically resides. */ 31 @SuppressWarnings("AndroidApiChecker") // Use of optional 32 @TargetApi(VERSION_CODES.N) userHomeCountryCode()33 public Optional<String> userHomeCountryCode(); 34 35 @SuppressWarnings("AndroidApiChecker") // Use of optional 36 @TargetApi(VERSION_CODES.N) attemptAssistedDial(@onNull String numberToTransform)37 public Optional<TransformationInfo> attemptAssistedDial(@NonNull String numberToTransform); 38 } 39