bundles/org.eclipse.emf.ecp.emfstore.ui/src/org/eclipse/emf/ecp/emfstore/internal/ui/handler/ImportProjectHelper.java

/*******************************************************************************
 * Copyright (c) 2011-2013 EclipseSource Muenchen GmbH and others.
 *
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 * Contributors:
 * Eugen Neufeld - initial API and implementation
 ******************************************************************************/
package org.eclipse.emf.ecp.emfstore.internal.ui.handler;

import java.io.File;
import java.io.IOException;
import java.util.List;

import org.eclipse.core.runtime.NullProgressMonitor;
import org.eclipse.emf.ecp.core.exceptions.ECPProjectWithNameExistsException;
import org.eclipse.emf.ecp.core.util.ECPProperties;
import org.eclipse.emf.ecp.core.util.ECPUtil;
import org.eclipse.emf.ecp.emfstore.core.internal.ECPEMFUtils;
import org.eclipse.emf.ecp.emfstore.core.internal.EMFStoreProvider;
import org.eclipse.emf.ecp.emfstore.internal.ui.Activator;
import org.eclipse.emf.ecp.internal.ui.PreferenceHelper;
import org.eclipse.emf.ecp.internal.ui.util.ECPExportHandlerHelper;
import org.eclipse.emf.ecp.internal.ui.util.ECPFileDialogHelper;
import org.eclipse.emf.emfstore.client.ESLocalProject;
import org.eclipse.emf.emfstore.internal.client.importexport.ExportImportControllerExecutor;
import org.eclipse.emf.emfstore.internal.client.importexport.ExportImportControllerFactory;
import org.eclipse.emf.emfstore.internal.client.importexport.impl.ExportImportDataUnits;
import org.eclipse.jface.dialogs.IInputValidator;
import org.eclipse.jface.dialogs.InputDialog;
import org.eclipse.jface.window.Window;
import org.eclipse.swt.widgets.Shell;
import org.osgi.framework.BundleContext;
import org.osgi.framework.FrameworkUtil;
import org.osgi.framework.ServiceReference;

/**
 * A helper class that can be used to import projects.
 *
 * @author Eugen Neufeld, David Soto Setzke
 *
 */
public final class ImportProjectHelper {

	private static final String FILE_EXTENSION = ExportImportDataUnits.ProjectSpace.getExtension();

	/**
	 * These filter names are used to filter which files are displayed.
	 */
	public static final String[] FILTER_NAMES = { "Model Files (*" + FILE_EXTENSION + ")" }; //$NON-NLS-1$ //$NON-NLS-2$

	/**
	 * These filter extensions are used to filter which files are displayed.
	 */
	public static final String[] FILTER_EXTS = { "*" + FILE_EXTENSION }; //$NON-NLS-1$

	private static final String EXPORT_MODEL_PATH = "org.eclipse.emf.ecp.exportProjectModelPath"; //$NON-NLS-1$

	private ImportProjectHelper() {
	}

	/**
	 * Imports a project.
	 *
	 * @param shell The active shell
	 */
	public static void importProject(Shell shell) {
		final File file = getFile(shell);
		if (file == null) {
			return;
		}

		try {
			new ExportImportControllerExecutor(file, new NullProgressMonitor())
				.execute(ExportImportControllerFactory.Import.getImportProjectSpaceController());
			PreferenceHelper.setPreference(EXPORT_MODEL_PATH, file.getParent());

			final List<ESLocalProject> localProjects = ECPEMFUtils.getESWorkspaceProviderInstance().getWorkspace()
				.getLocalProjects();
			final ESLocalProject localProject = localProjects.get(localProjects.size() - 1);
			final ECPProperties properties = ECPUtil.createProperties();
			properties.addProperty(EMFStoreProvider.PROP_PROJECTSPACEID, localProject.getLocalProjectId().getId());
			final InputDialog id = new InputDialog(shell, "Project Name", //$NON-NLS-1$
				"Enter the name for the imported project.", localProject.getProjectName(), new IInputValidator() { //$NON-NLS-1$

					@Override
					public String isValid(String newText) {
						return ECPUtil.getECPProjectManager().getProject(newText) == null ? null
							: String.format(
								"A project with the name %s already exists.", newText); //$NON-NLS-1$
					}
				});
			final int result = id.open();
			if (Window.CANCEL == result) {
				return;
			}
			final String projectName = id.getValue();
			ECPUtil.getECPProjectManager().createProject(
				ECPUtil.getECPProviderRegistry().getProvider(EMFStoreProvider.NAME), projectName, properties);

		} catch (final IOException ex) {
			Activator.log(ex);
		} catch (final ECPProjectWithNameExistsException ex) {
			Activator.log(ex);
		}
	}

	private static File getFile(Shell shell) {
		final BundleContext bundleContext = FrameworkUtil.getBundle(ECPExportHandlerHelper.class).getBundleContext();
		final ServiceReference<ECPFileDialogHelper> serviceReference = bundleContext
			.getServiceReference(ECPFileDialogHelper.class);
		final ECPFileDialogHelper fileDialogHelper = bundleContext.getService(serviceReference);
		final String result = fileDialogHelper.getPathForImport(shell);
		bundleContext.ungetService(serviceReference);
		if (result == null) {
			return null;
		}
		return new File(result);
	}

}