| /* |
| * Copyright (C) 2015 DroidDriver committers |
| * |
| * 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 io.appium.droiddriver.helpers; |
| |
| import io.appium.droiddriver.DroidDriver; |
| import io.appium.droiddriver.exceptions.UnrecoverableException; |
| |
| /** |
| * Calls {@link DroidDrivers#setSingleton} once and only once. |
| */ |
| public class DroidDriversInitializer extends SingleRun { |
| private static DroidDriversInitializer instance; |
| private final DroidDriver driver; |
| |
| private DroidDriversInitializer(DroidDriver driver) { |
| this.driver = driver; |
| } |
| |
| @Override |
| protected void run() { |
| DroidDrivers.setSingleton(driver); |
| } |
| |
| public static synchronized DroidDriversInitializer get(DroidDriver driver) { |
| if (instance == null) { |
| instance = new DroidDriversInitializer(driver); |
| } |
| |
| if (instance.driver != driver) { |
| throw new UnrecoverableException("The singleton DroidDriversInitializer has already been" + |
| " created with a different driver"); |
| } |
| return instance; |
| } |
| } |