/* * 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 com.android.dialer.assisteddialing; import android.annotation.TargetApi; import android.os.Build.VERSION_CODES; import android.support.annotation.NonNull; import android.text.TextUtils; import com.android.dialer.common.LogUtil; import com.android.dialer.strictmode.StrictModeUtils; import com.google.i18n.phonenumbers.NumberParseException; import com.google.i18n.phonenumbers.PhoneNumberUtil; import com.google.i18n.phonenumbers.Phonenumber.PhoneNumber; import java.util.Optional; /** Responsible for transforming numbers to make them dialable and valid when roaming. */ final class NumberTransformer { private final PhoneNumberUtil phoneNumberUtil; private final Constraints constraints; public NumberTransformer(Constraints constraints) { this.constraints = constraints; this.phoneNumberUtil = StrictModeUtils.bypass(() -> PhoneNumberUtil.getInstance()); } /** * Returns a boolean for callers to quickly determine whether or not the AssistedDialingMediator * thinks an attempt at assisted dialing is likely to succeed. */ public boolean canDoAssistedDialingTransformation( @NonNull String numberToCheck, @NonNull String userHomeCountryCode, @NonNull String userRoamingCountryCode) { return constraints.meetsPreconditions( numberToCheck, userHomeCountryCode, userRoamingCountryCode); } /** * A method to do assisted dialing transformations. * *
The library will do its best to attempt a transformation, but, if for any reason the
* transformation fails, we return an empty optional. The operation can be considered a success
* when the Optional we return has a value set.
*/
@SuppressWarnings("AndroidApiChecker") // Use of optional
@TargetApi(VERSION_CODES.N)
public Optional