CreateViewWizard.java

/*******************************************************************************
 * Copyright (c) 2013 INRIA.
 * 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:
 * Juan David Villa Calle - initial API and implementation
 *******************************************************************************/
package fr.inria.atlanmod.emfviews.ui.wizard.view;

import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;

import org.eclipse.core.resources.IFile;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IConfigurationElement;
import org.eclipse.core.runtime.IExecutableExtension;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.Path;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.wizard.IWizardPage;
import org.eclipse.jface.wizard.Wizard;
import org.eclipse.ui.INewWizard;
import org.eclipse.ui.IWorkbench;
import org.eclipse.ui.dialogs.WizardNewFileCreationPage;

import fr.inria.atlanmod.emfviews.core.EView;
import fr.inria.atlanmod.emfviews.core.EmfViewsFactory;
import fr.inria.atlanmod.emfviews.ui.Messages;
import fr.inria.atlanmod.emfviews.ui.EmfViewsUIPlugin;
import fr.inria.atlanmod.emfviews.util.EmfViewsUtil;
import fr.inria.atlanmod.emfviews.virtualLinks.VirtualLinks;

public class CreateViewWizard extends Wizard implements INewWizard,
		IExecutableExtension {

	/**
	 * Wizard page to select the location and name of the new virtual model
	 */
	private WizardNewFileCreationPage viewContainerFolderSelectionPage;

	/**
	 * Wizard page to select the models and metamodels needed to create the
	 * virtual model
	 */
	private CreateViewScreen createViewScreen;

	/**
	 * 
	 */
	private IStructuredSelection selection;

	private IFile virtualMetamodel;

	private EmfViewsFactory vm;

	public CreateViewWizard(IFile virtualMetamodel) {

		super();
		this.virtualMetamodel = virtualMetamodel;
		vm = new EmfViewsFactory();
		setNeedsProgressMonitor(true);
		setWindowTitle(Messages.getString("VirtualModelFileWizard.Title")); //$NON-NLS-1$
	}

	/**
	 * The wizard is composed of two pages
	 */
	@Override
	public void addPages() {
		viewContainerFolderSelectionPage = new WizardNewFileCreationPage(
				Messages.getString("VirtualModelFileWizard.Page.Name"), selection); //$NON-NLS-1$
		viewContainerFolderSelectionPage.setImageDescriptor(EmfViewsUIPlugin
				.getImageDescriptor("VirtualModelWizard.png")); //$NON-NLS-1$

		viewContainerFolderSelectionPage.setTitle(Messages
				.getString("VirtualModelFileWizard.Title")); //$NON-NLS-1$
		viewContainerFolderSelectionPage.setDescription(Messages
				.getString("VirtualModelFileWizard.Page.Description")); //$NON-NLS-1$
		viewContainerFolderSelectionPage.setFileExtension("eview"); //$NON-NLS-1$
		addPage(viewContainerFolderSelectionPage);
		String compositionMetamodel = virtualMetamodel.getFullPath()
				.makeRelative().toString();
		createViewScreen = new CreateViewScreen(compositionMetamodel);

		addPage(createViewScreen);
	}

	@Override
	public void init(IWorkbench currentWorkbench,
			IStructuredSelection structuredSelection) {

		this.selection = structuredSelection;
	}

	@Override
	public boolean canFinish() {
		if (getContainer().getCurrentPage() == createViewScreen) {
			return createViewScreen.isPageComplete();
		}
		return viewContainerFolderSelectionPage.isPageComplete();
	}

	@Override
	public IWizardPage getNextPage(IWizardPage page) {
		return super.getNextPage(page);
	}

	@Override
	public boolean performFinish() {

		String viewtypePath = createViewScreen
				.getCompositionMetaModelPath().get(0);

		ArrayList<String> inputmodelsPlatformUris = createViewScreen.getInputModelPaths();
		ArrayList<String> relativeInputmodelsUris = new ArrayList<>();
		String contributingModelsToSerialize="";
		for (String modelPlatformURI : inputmodelsPlatformUris) {
			if (modelPlatformURI.startsWith("platform:/resource/")) {
				String inputModelRelativeURI = modelPlatformURI.replace(
						"platform:/resource/", "");
				relativeInputmodelsUris.add(inputModelRelativeURI);
				contributingModelsToSerialize=contributingModelsToSerialize+inputModelRelativeURI+",";
			}
		}
		contributingModelsToSerialize=contributingModelsToSerialize.substring(0,contributingModelsToSerialize.length()-1);
		EView eview;
			try {
				String viewFileWorkspaceRelativePath=viewContainerFolderSelectionPage
						.getContainerFullPath()
						.append(viewContainerFolderSelectionPage
								.getFileName()).toString();
				
				IPath filePath = new Path(viewFileWorkspaceRelativePath)
				.removeFileExtension();
				IPath linksModelPath = filePath.addFileExtension("xmi");
				
				VirtualLinks viewLinks=EmfViewsUtil.createLinksModel();
				EmfViewsUtil.persistLinksModel(viewLinks, org.eclipse.emf.common.util.URI
						.createURI(EmfViewsUtil.toURI(linksModelPath.toString()).toString()));
				
				eview = (EView) vm.createEView(
						relativeInputmodelsUris,
						viewtypePath,
						linksModelPath.toString());
				
				IFile newViewFile=viewContainerFolderSelectionPage.createNewFile();
				StringBuffer fileContent = new StringBuffer();
				
				fileContent.append("contributingModels=");
				fileContent.append(contributingModelsToSerialize);
				fileContent.append("\n");
				fileContent.append("compositionMetamodel=");
				fileContent.append(viewtypePath);
				fileContent.append("\n");
				fileContent.append("correspondenceModel=");
				fileContent.append(linksModelPath.toString());
				serializeView(newViewFile, fileContent);
				
				} 
			catch (Exception e) {
				e.printStackTrace();
			}
		return true;

	}
	
	private void serializeView(IFile viewFile, StringBuffer fileContent)
			throws CoreException, IOException {
		InputStream stream = new ByteArrayInputStream(fileContent.toString()
				.getBytes());
		if (viewFile.exists()) {
			viewFile.setContents(stream, true, true, null);
		} else {
			viewFile.create(stream, true, null);
		}
		stream.close();
	}

	/**
	 * {@inheritDoc}
	 * 
	 * @see org.eclipse.core.runtime.IExecutableExtension#setInitializationData(org.eclipse.core.runtime.IConfigurationElement,
	 *      java.lang.String, java.lang.Object)
	 */
	public void setInitializationData(IConfigurationElement config,
			String propertyName, Object data) throws CoreException {

	}

}