/*****************************************************************************
 * Copyright (c) 2012 CEA LIST.
 *
 *    
 * 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:
 *  CEA LIST - Initial API and implementation
 *
 *****************************************************************************/
package org.eclipse.papyrus.infra.discovery.ui.wizards;

import java.io.IOException;
import java.util.Collections;

import org.eclipse.emf.common.util.URI;
import org.eclipse.emf.ecore.resource.Resource;
import org.eclipse.emf.ecore.xmi.impl.XMIResourceImpl;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.wizard.WizardDialog;
import org.eclipse.papyrus.infra.discovery.DiscoveryDefinition;
import org.eclipse.papyrus.infra.discovery.ui.viewer.DiscoveryContentProvider;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.PlatformUI;


/**
 * Execution class for the execution of the discovery component
 */
public class DiscoveryComponent {
	
	/** URI of the model where all extra component features to be installed are referenced */
	public static final String DISCOVERY_PAPYRUS_URI = "http://www.eclipse.org/modeling/mdt/papyrus/downloads/discovery/juno/papyrus-extra.xmi";

	public static final Object execute() {
		final IWorkbenchWindow window = PlatformUI.getWorkbench()
			.getActiveWorkbenchWindow();

	DiscoveryContentProvider provider = new DiscoveryContentProvider() {

		/**
		 * {@inheritDoc}
		 */
		@Override
		protected DiscoveryDefinition load() {
			Resource res = new XMIResourceImpl(
					URI
.createURI(DISCOVERY_PAPYRUS_URI));
			try {
				res.load(Collections.EMPTY_MAP);
			} catch (IOException e) {
				MessageDialog.openError(window.getShell(),
						Messages.DiscoveryComponent_CannotConnectToSource_title,  Messages.DiscoveryComponent_CannotConnectToSource_label);
				throw new RuntimeException(e);
			}
			return (DiscoveryDefinition) res.getContents().get(0);
		}

		/**
		 * {@inheritDoc}
		 */
		@Override
		public String getDescription() {
			return Messages.DiscoveryComponent_description;
		}

		/**
		 * {@inheritDoc}
		 */
		@Override
		public String getTitle() {
			return Messages.DiscoveryComponent_title;
		}

	};
	
	
	DiscoveryWizard wizard = new DiscoveryWizard(provider);
	WizardDialog dialog = new WizardDialog(window.getShell(), wizard);
	return dialog.open();
	}
	
}