org.eclipse.osbp.ecview.dsl.tests/src-gen/org/eclipse/osbp/ecview/dsl/UIGrammarInjectorProvider.java

/**
 * Copyright (c) 2011, 2015 - Lunifera GmbH (Gross Enzersdorf), Loetz GmbH&Co.KG (Heidelberg)
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *         Florian Pirchner - Initial implementation
 */

package org.eclipse.osbp.ecview.dsl;

import org.eclipse.xtext.junit4.GlobalRegistries;
import org.eclipse.xtext.junit4.GlobalRegistries.GlobalStateMemento;
import org.eclipse.xtext.junit4.IInjectorProvider;
import org.eclipse.xtext.junit4.IRegistryConfigurator;

import com.google.inject.Injector;

public class UIGrammarInjectorProvider implements IInjectorProvider, IRegistryConfigurator {
	
    protected GlobalStateMemento stateBeforeInjectorCreation;
	protected GlobalStateMemento stateAfterInjectorCreation;
	protected Injector injector;

	static {
		GlobalRegistries.initializeDefaults();
	}

	public Injector getInjector()
	{
		if (injector == null) {
			stateBeforeInjectorCreation = GlobalRegistries.makeCopyOfGlobalState();
			this.injector = internalCreateInjector();
			stateAfterInjectorCreation = GlobalRegistries.makeCopyOfGlobalState();
		}
		return injector;
	}
	
	protected Injector internalCreateInjector() {
	    return new UIGrammarStandaloneSetup().createInjectorAndDoEMFRegistration();
	}

	public void restoreRegistry() {
		stateBeforeInjectorCreation.restoreGlobalState();
	}

	public void setupRegistry() {
		getInjector();
		stateAfterInjectorCreation.restoreGlobalState();
	}
}