/*******************************************************************************
 * Copyright (c) 2012, 2015 IBM Corporation and others.
 * 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:
 *     IBM Corporation - initial API and implementation
 ******************************************************************************/
package org.eclipse.e4.ui.tests.application;

import static org.junit.Assert.assertTrue;

import org.eclipse.e4.core.contexts.IEclipseContext;
import org.eclipse.e4.core.services.contributions.IContributionFactory;
import org.eclipse.e4.ui.internal.workbench.swt.E4Application;
import org.eclipse.e4.ui.model.application.MApplication;
import org.eclipse.e4.ui.model.application.impl.ApplicationFactoryImpl;
import org.eclipse.e4.ui.workbench.IPresentationEngine;
import org.eclipse.e4.ui.workbench.modeling.EModelService;
import org.junit.After;
import org.junit.Before;

public class UITest {

	final static private String engineURI = "bundleclass://org.eclipse.e4.ui.tests/org.eclipse.e4.ui.tests.application.HeadlessContextPresentationEngine"; //$NON-NLS-1$

	protected IEclipseContext applicationContext;
	protected MApplication application;

	private IPresentationEngine engine;

	protected EModelService ems;

	@Before
	public void setUp() throws Exception {

		application = ApplicationFactoryImpl.eINSTANCE.createApplication();
		applicationContext = E4Application.createDefaultContext();
		application.setContext(applicationContext);
		applicationContext.set(MApplication.class, application);
		ems = applicationContext.get(EModelService.class);
		E4Application.initializeServices(application);
	}

	@After
	public void tearDown() throws Exception {
		applicationContext.dispose(); // used by the tests to dispose GUI?
	}

	protected IPresentationEngine getEngine() {
		if (engine == null) {
			IContributionFactory contributionFactory = applicationContext.get(IContributionFactory.class);
			Object newEngine = contributionFactory.create(engineURI, applicationContext);
			assertTrue(newEngine instanceof IPresentationEngine);
			applicationContext.set(IPresentationEngine.class.getName(), newEngine);

			engine = (IPresentationEngine) newEngine;
		}

		return engine;
	}

}