Java tutorial
/** * Copyright 2010 The University of North Carolina at Chapel Hill * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package crosswalk.diagram.part; import java.io.IOException; import java.util.LinkedList; 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.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; import crosswalk.diagram.edit.parts.EditingContainerEditPart; /** * @generated */ public class CrosswalkNewDiagramFileWizard extends Wizard { /** * @generated */ private WizardNewFileCreationPage myFileCreationPage; /** * @generated */ private ModelElementSelectionPage diagramRootElementSelectionPage; /** * @generated */ private TransactionalEditingDomain myEditingDomain; /** * @generated */ public CrosswalkNewDiagramFileWizard(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.CrosswalkNewDiagramFileWizard_CreationPageName, StructuredSelection.EMPTY); myFileCreationPage.setTitle(Messages.CrosswalkNewDiagramFileWizard_CreationPageTitle); myFileCreationPage.setDescription(NLS.bind(Messages.CrosswalkNewDiagramFileWizard_CreationPageDescription, EditingContainerEditPart.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(CrosswalkDiagramEditorUtil.getUniqueFileName(filePath, fileName, "crosswalk")); //$NON-NLS-1$ diagramRootElementSelectionPage = new DiagramRootElementSelectionPage( Messages.CrosswalkNewDiagramFileWizard_RootSelectionPageName); diagramRootElementSelectionPage.setTitle(Messages.CrosswalkNewDiagramFileWizard_RootSelectionPageTitle); diagramRootElementSelectionPage .setDescription(Messages.CrosswalkNewDiagramFileWizard_RootSelectionPageDescription); diagramRootElementSelectionPage.setModelElement(diagramRoot); myEditingDomain = editingDomain; } /** * @generated */ public void addPages() { addPage(myFileCreationPage); addPage(diagramRootElementSelectionPage); } /** * @generated */ public boolean performFinish() { LinkedList<IFile> affectedFiles = new LinkedList<IFile>(); IFile diagramFile = myFileCreationPage.createNewFile(); CrosswalkDiagramEditorUtil.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.CrosswalkNewDiagramFileWizard_InitDiagramCommand, affectedFiles) { protected CommandResult doExecuteWithResult(IProgressMonitor monitor, IAdaptable info) throws ExecutionException { int diagramVID = CrosswalkVisualIDRegistry .getDiagramVisualID(diagramRootElementSelectionPage.getModelElement()); if (diagramVID != EditingContainerEditPart.VISUAL_ID) { return CommandResult .newErrorCommandResult(Messages.CrosswalkNewDiagramFileWizard_IncorrectRootError); } Diagram diagram = ViewService.createDiagram(diagramRootElementSelectionPage.getModelElement(), EditingContainerEditPart.MODEL_ID, CrosswalkDiagramEditorPlugin.DIAGRAM_PREFERENCES_HINT); diagramResource.getContents().add(diagram); diagramResource.getContents().add(diagram.getElement()); return CommandResult.newOKCommandResult(); } }; try { OperationHistoryFactory.getOperationHistory().execute(command, new NullProgressMonitor(), null); diagramResource.save(CrosswalkDiagramEditorUtil.getSaveOptions()); CrosswalkDiagramEditorUtil.openDiagram(diagramResource); } catch (ExecutionException e) { CrosswalkDiagramEditorPlugin.getInstance().logError("Unable to create model and diagram", e); //$NON-NLS-1$ } catch (IOException ex) { CrosswalkDiagramEditorPlugin.getInstance().logError("Save operation failed for: " + diagramModelURI, //$NON-NLS-1$ ex); } catch (PartInitException ex) { CrosswalkDiagramEditorPlugin.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.CrosswalkNewDiagramFileWizard_RootSelectionPageSelectionTitle; } /** * @generated */ protected boolean validatePage() { if (selectedModelElement == null) { setErrorMessage(Messages.CrosswalkNewDiagramFileWizard_RootSelectionPageNoSelectionMessage); return false; } boolean result = ViewService.getInstance() .provides(new CreateDiagramViewOperation(new EObjectAdapter(selectedModelElement), EditingContainerEditPart.MODEL_ID, CrosswalkDiagramEditorPlugin.DIAGRAM_PREFERENCES_HINT)); setErrorMessage(result ? null : Messages.CrosswalkNewDiagramFileWizard_RootSelectionPageInvalidSelectionMessage); return result; } } }