plugins/org.eclipse.gmf.graphdef.editor/src/org/eclipse/gmf/graphdef/editor/part/GMFGraphNewDiagramFileWizard.java

/*
 *  Copyright (c) 2006, 2009 Borland Software 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:
 *      Borland Software Corporation - initial API and implementation
 */
package org.eclipse.gmf.graphdef.editor.part;

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

import org.eclipse.core.commands.ExecutionException;
import org.eclipse.core.commands.operations.OperationHistoryFactory;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.NullProgressMonitor;
import org.eclipse.core.runtime.Path;
import org.eclipse.emf.common.util.URI;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.resource.Resource;
import org.eclipse.emf.ecore.resource.ResourceSet;
import org.eclipse.emf.transaction.TransactionalEditingDomain;
import org.eclipse.gmf.graphdef.editor.edit.parts.CanvasEditPart;
import org.eclipse.gmf.runtime.common.core.command.CommandResult;
import org.eclipse.gmf.runtime.diagram.core.services.ViewService;
import org.eclipse.gmf.runtime.diagram.core.services.view.CreateDiagramViewOperation;
import org.eclipse.gmf.runtime.emf.commands.core.command.AbstractTransactionalCommand;
import org.eclipse.gmf.runtime.emf.core.util.EObjectAdapter;
import org.eclipse.gmf.runtime.notation.Diagram;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.jface.wizard.Wizard;
import org.eclipse.osgi.util.NLS;
import org.eclipse.ui.PartInitException;
import org.eclipse.ui.dialogs.WizardNewFileCreationPage;

/**
 * @generated
 */
public class GMFGraphNewDiagramFileWizard extends Wizard {

	/**
	 * @generated
	 */
	private WizardNewFileCreationPage myFileCreationPage;

	/**
	 * @generated
	 */
	private ModelElementSelectionPage diagramRootElementSelectionPage;

	/**
	 * @generated
	 */
	private TransactionalEditingDomain myEditingDomain;

	/**
	 * @generated
	 */
	public GMFGraphNewDiagramFileWizard(URI domainModelURI, EObject diagramRoot, TransactionalEditingDomain editingDomain) {
		assert domainModelURI != null : "Domain model uri must be specified"; //$NON-NLS-1$
		assert diagramRoot != null : "Doagram root element must be specified"; //$NON-NLS-1$
		assert editingDomain != null : "Editing domain must be specified"; //$NON-NLS-1$

		myFileCreationPage = new WizardNewFileCreationPage(Messages.GMFGraphNewDiagramFileWizard_CreationPageName, StructuredSelection.EMPTY);
		myFileCreationPage.setTitle(Messages.GMFGraphNewDiagramFileWizard_CreationPageTitle);
		myFileCreationPage.setDescription(NLS.bind(Messages.GMFGraphNewDiagramFileWizard_CreationPageDescription, CanvasEditPart.MODEL_ID));
		IPath filePath;
		String fileName = URI.decode(domainModelURI.trimFileExtension().lastSegment());
		if (domainModelURI.isPlatformResource()) {
			filePath = new Path(domainModelURI.trimSegments(1).toPlatformString(true));
		} else if (domainModelURI.isFile()) {
			filePath = new Path(domainModelURI.trimSegments(1).toFileString());
		} else {
			// TODO : use some default path
			throw new IllegalArgumentException("Unsupported URI: " + domainModelURI); //$NON-NLS-1$
		}
		myFileCreationPage.setContainerFullPath(filePath);
		myFileCreationPage.setFileName(GMFGraphDiagramEditorUtil.getUniqueFileName(filePath, fileName, "gmfgraph_diagram")); //$NON-NLS-1$

		diagramRootElementSelectionPage = new DiagramRootElementSelectionPage(Messages.GMFGraphNewDiagramFileWizard_RootSelectionPageName);
		diagramRootElementSelectionPage.setTitle(Messages.GMFGraphNewDiagramFileWizard_RootSelectionPageTitle);
		diagramRootElementSelectionPage.setDescription(Messages.GMFGraphNewDiagramFileWizard_RootSelectionPageDescription);
		diagramRootElementSelectionPage.setModelElement(diagramRoot);

		myEditingDomain = editingDomain;
	}

	/**
	 * @generated
	 */
	public void addPages() {
		addPage(myFileCreationPage);
		addPage(diagramRootElementSelectionPage);
	}

	/**
	 * @generated
	 */
	public boolean performFinish() {
		List affectedFiles = new LinkedList();
		IFile diagramFile = myFileCreationPage.createNewFile();
		GMFGraphDiagramEditorUtil.setCharset(diagramFile);
		affectedFiles.add(diagramFile);
		URI diagramModelURI = URI.createPlatformResourceURI(diagramFile.getFullPath().toString(), true);
		ResourceSet resourceSet = myEditingDomain.getResourceSet();
		final Resource diagramResource = resourceSet.createResource(diagramModelURI);
		AbstractTransactionalCommand command = new AbstractTransactionalCommand(myEditingDomain, Messages.GMFGraphNewDiagramFileWizard_InitDiagramCommand, affectedFiles) {

			protected CommandResult doExecuteWithResult(IProgressMonitor monitor, IAdaptable info) throws ExecutionException {
				int diagramVID = GMFGraphVisualIDRegistry.getDiagramVisualID(diagramRootElementSelectionPage.getModelElement());
				if (diagramVID != CanvasEditPart.VISUAL_ID) {
					return CommandResult.newErrorCommandResult(Messages.GMFGraphNewDiagramFileWizard_IncorrectRootError);
				}
				Diagram diagram = ViewService.createDiagram(diagramRootElementSelectionPage.getModelElement(), CanvasEditPart.MODEL_ID, GMFGraphDiagramEditorPlugin.DIAGRAM_PREFERENCES_HINT);
				diagramResource.getContents().add(diagram);
				return CommandResult.newOKCommandResult();
			}
		};
		try {
			OperationHistoryFactory.getOperationHistory().execute(command, new NullProgressMonitor(), null);
			diagramResource.save(GMFGraphDiagramEditorUtil.getSaveOptions());
			GMFGraphDiagramEditorUtil.openDiagram(diagramResource);
		} catch (ExecutionException e) {
			GMFGraphDiagramEditorPlugin.getInstance().logError("Unable to create model and diagram", e); //$NON-NLS-1$
		} catch (IOException ex) {
			GMFGraphDiagramEditorPlugin.getInstance().logError("Save operation failed for: " + diagramModelURI, ex); //$NON-NLS-1$
		} catch (PartInitException ex) {
			GMFGraphDiagramEditorPlugin.getInstance().logError("Unable to open editor", ex); //$NON-NLS-1$
		}
		return true;
	}

	/**
	 * @generated
	 */
	private static class DiagramRootElementSelectionPage extends ModelElementSelectionPage {

		/**
		 * @generated
		 */
		protected DiagramRootElementSelectionPage(String pageName) {
			super(pageName);
		}

		/**
		 * @generated
		 */
		protected String getSelectionTitle() {
			return Messages.GMFGraphNewDiagramFileWizard_RootSelectionPageSelectionTitle;
		}

		/**
		 * @generated
		 */
		protected boolean validatePage() {
			if (selectedModelElement == null) {
				setErrorMessage(Messages.GMFGraphNewDiagramFileWizard_RootSelectionPageNoSelectionMessage);
				return false;
			}
			boolean result = ViewService.getInstance().provides(
					new CreateDiagramViewOperation(new EObjectAdapter(selectedModelElement), CanvasEditPart.MODEL_ID, GMFGraphDiagramEditorPlugin.DIAGRAM_PREFERENCES_HINT));
			setErrorMessage(result ? null : Messages.GMFGraphNewDiagramFileWizard_RootSelectionPageInvalidSelectionMessage);
			return result;
		}
	}
}