/*
* 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;
}
}