| /******************************************************************************* |
| * <copyright> |
| * |
| * Copyright (c) 2005, 2010 SAP AG. |
| * 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: |
| * SAP AG - initial API, implementation and documentation |
| * |
| * </copyright> |
| * |
| *******************************************************************************/ |
| package org.eclipse.graphiti.examples.tutorial.features; |
| |
| import org.eclipse.emf.ecore.EClass; |
| import org.eclipse.graphiti.features.IFeatureProvider; |
| import org.eclipse.graphiti.features.IReason; |
| import org.eclipse.graphiti.features.context.IUpdateContext; |
| import org.eclipse.graphiti.features.impl.AbstractUpdateFeature; |
| import org.eclipse.graphiti.features.impl.Reason; |
| import org.eclipse.graphiti.mm.algorithms.Text; |
| import org.eclipse.graphiti.mm.pictograms.ContainerShape; |
| import org.eclipse.graphiti.mm.pictograms.PictogramElement; |
| import org.eclipse.graphiti.mm.pictograms.Shape; |
| |
| public class TutorialUpdateEClassFeature extends AbstractUpdateFeature { |
| |
| public TutorialUpdateEClassFeature(IFeatureProvider fp) { |
| super(fp); |
| } |
| |
| public boolean canUpdate(IUpdateContext context) { |
| // return true, if linked business object is an EClass |
| Object bo = getBusinessObjectForPictogramElement(context.getPictogramElement()); |
| return (bo instanceof EClass); |
| } |
| |
| public IReason updateNeeded(IUpdateContext context) { |
| // retrieve name from pictogram model |
| String pictogramName = null; |
| PictogramElement pictogramElement = context.getPictogramElement(); |
| if (pictogramElement instanceof ContainerShape) { |
| ContainerShape cs = (ContainerShape) pictogramElement; |
| for (Shape shape : cs.getChildren()) { |
| if (shape.getGraphicsAlgorithm() instanceof Text) { |
| Text text = (Text) shape.getGraphicsAlgorithm(); |
| pictogramName = text.getValue(); |
| } |
| } |
| } |
| |
| // retrieve name from business model |
| String businessName = null; |
| Object bo = getBusinessObjectForPictogramElement(pictogramElement); |
| if (bo instanceof EClass) { |
| EClass eClass = (EClass) bo; |
| businessName = eClass.getName(); |
| } |
| |
| // update needed, if names are different |
| boolean updateNameNeeded = ((pictogramName == null && businessName != null) || (pictogramName != null && !pictogramName |
| .equals(businessName))); |
| if (updateNameNeeded) { |
| return Reason.createTrueReason("Name is out of date"); //$NON-NLS-1$ |
| } else { |
| return Reason.createFalseReason(); |
| } |
| } |
| |
| public boolean update(IUpdateContext context) { |
| // retrieve name from business model |
| String businessName = null; |
| PictogramElement pictogramElement = context.getPictogramElement(); |
| Object bo = getBusinessObjectForPictogramElement(pictogramElement); |
| if (bo instanceof EClass) { |
| EClass eClass = (EClass) bo; |
| businessName = eClass.getName(); |
| } |
| |
| // Set name in pictogram model |
| if (pictogramElement instanceof ContainerShape) { |
| ContainerShape cs = (ContainerShape) pictogramElement; |
| for (Shape shape : cs.getChildren()) { |
| if (shape.getGraphicsAlgorithm() instanceof Text) { |
| Text text = (Text) shape.getGraphicsAlgorithm(); |
| text.setValue(businessName); |
| return true; |
| } |
| } |
| } |
| |
| return false; |
| } |
| } |