| //------------------------------------------------------------------------------ |
| // Copyright (c) 2005, 2006 IBM 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: |
| // IBM Corporation - initial implementation |
| //------------------------------------------------------------------------------ |
| package org.eclipse.epf.library.edit.process.command; |
| |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.Collections; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| |
| import org.eclipse.emf.common.command.AbstractCommand; |
| import org.eclipse.emf.ecore.EReference; |
| import org.eclipse.emf.ecore.EStructuralFeature; |
| import org.eclipse.emf.ecore.resource.Resource; |
| import org.eclipse.epf.library.edit.Providers; |
| import org.eclipse.epf.library.edit.command.IResourceAwareCommand; |
| import org.eclipse.epf.library.edit.util.ProcessUtil; |
| import org.eclipse.epf.uma.ContentElement; |
| import org.eclipse.epf.uma.Descriptor; |
| import org.eclipse.epf.uma.MethodConfiguration; |
| import org.eclipse.epf.uma.MethodElement; |
| |
| /** |
| * @author Phong Nguyen Le |
| * @since 1.5 |
| * |
| */ |
| public class RemoveDuplicateReferenceCommand extends AbstractCommand implements |
| IResourceAwareCommand { |
| |
| private Descriptor descriptor; |
| private Collection<EReference> sourceFeatures; |
| private Map<EStructuralFeature, Object> featureToOldValueMap = new HashMap<EStructuralFeature, Object>(); |
| private MethodConfiguration config; |
| |
| public RemoveDuplicateReferenceCommand(Descriptor descriptor, Collection<EReference> sourceFeatures, MethodConfiguration config) { |
| this.descriptor = descriptor; |
| this.sourceFeatures = sourceFeatures; |
| this.config = config; |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.epf.library.edit.command.IResourceAwareCommand#getModifiedResources() |
| */ |
| public Collection<Resource> getModifiedResources() { |
| if(descriptor.eResource() != null) { |
| return Collections.singletonList(descriptor.eResource()); |
| } |
| else { |
| return Collections.emptyList(); |
| } |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.emf.common.command.Command#execute() |
| */ |
| public void execute() { |
| MethodElement source = ProcessUtil.getAssociatedElement(descriptor); |
| if(source instanceof ContentElement) { |
| ContentElement contentElement = (ContentElement) source; |
| for (EReference sourceFeature : sourceFeatures) { |
| Object sourceValue = Providers.getConfigurationApplicator().getReference(contentElement, sourceFeature, config); |
| if((sourceFeature.isMany() && ((List) sourceValue).isEmpty()) || (!sourceFeature.isMany() && sourceValue == null)) { |
| continue; |
| } |
| EStructuralFeature feature = BSDropCommand.getDescriptorFeature(sourceFeature); |
| if(feature != null) { |
| Object value = descriptor.eGet(feature); |
| if((feature.isMany() && ((List) value).isEmpty()) || (!feature.isMany() && value == null)) { |
| continue; |
| } |
| if(feature.isMany()) { |
| List list = (List) value; |
| List<Object> oldList = new ArrayList<Object>(list); |
| if(list.removeAll((Collection) sourceValue)) { |
| featureToOldValueMap.put(feature, oldList); |
| } |
| } |
| } |
| } |
| } |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.emf.common.command.Command#redo() |
| */ |
| public void redo() { |
| execute(); |
| } |
| |
| protected boolean prepare() { |
| return true; |
| } |
| |
| public void undo() { |
| if(featureToOldValueMap != null) { |
| for (Map.Entry<EStructuralFeature, Object> entry : featureToOldValueMap.entrySet()) { |
| descriptor.eSet(entry.getKey(), entry.getValue()); |
| } |
| featureToOldValueMap.clear(); |
| } |
| } |
| |
| } |