| //------------------------------------------------------------------------------ |
| // 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.HashSet; |
| import java.util.Iterator; |
| import java.util.List; |
| |
| import org.eclipse.emf.common.command.AbstractCommand; |
| import org.eclipse.emf.ecore.EObject; |
| import org.eclipse.emf.ecore.EStructuralFeature; |
| import org.eclipse.epf.library.edit.command.IResourceAwareCommand; |
| import org.eclipse.epf.library.edit.util.TngUtil; |
| |
| |
| /** |
| * Drop command to drop any object on a target that supports adapting drop |
| * object to its own object. |
| * |
| * @author Phong Nguyen Le |
| * @since 1.0 |
| */ |
| public class GenericDropCommand extends AbstractCommand implements |
| IResourceAwareCommand { |
| |
| private Collection dropElements; |
| |
| private ArrayList featureElements; |
| |
| private Collection modifiedResources; |
| |
| private EObject target; |
| |
| private EStructuralFeature feature; |
| |
| private ElementAdapter dropAdapter; |
| |
| public GenericDropCommand(EObject target, EStructuralFeature feature, |
| Collection dropElements, ElementAdapter dropAdapter) { |
| this.target = target; |
| this.feature = feature; |
| this.dropElements = dropElements; |
| this.dropAdapter = dropAdapter; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.emf.common.command.AbstractCommand#prepare() |
| */ |
| protected boolean prepare() { |
| return true; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see com.ibm.library.edit.command.IResourceAwareCommand#getModifiedResources() |
| */ |
| public Collection getModifiedResources() { |
| if (modifiedResources == null) { |
| modifiedResources = new HashSet(); |
| } |
| return modifiedResources; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.emf.common.command.Command#execute() |
| */ |
| public void execute() { |
| // compile the featureElements list |
| // |
| featureElements = new ArrayList(); |
| for (Iterator iter = dropElements.iterator(); iter.hasNext();) { |
| Object element = TngUtil.unwrap(iter.next()); |
| element = dropAdapter.adapt(element); |
| if (element != null) { |
| featureElements.add(element); |
| } |
| // if(element instanceof Role) { |
| // if(createDescriptor) { |
| // featureElements.add(ProcessUtil.createRoleDescriptor((Role) |
| // element)); |
| // } |
| // else { |
| // featureElements.add(element); |
| // } |
| // } |
| } |
| |
| redo(); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.emf.common.command.Command#redo() |
| */ |
| public void redo() { |
| if (!featureElements.isEmpty()) { |
| ((List) target.eGet(feature)).addAll(featureElements); |
| if (target.eResource() != null) { |
| getModifiedResources().add(target.eResource()); |
| } |
| } |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.emf.common.command.AbstractCommand#undo() |
| */ |
| public void undo() { |
| ((List) target.eGet(feature)).removeAll(featureElements); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.emf.common.command.AbstractCommand#getAffectedObjects() |
| */ |
| public Collection getAffectedObjects() { |
| return featureElements; |
| } |
| |
| public static interface ElementAdapter { |
| /** |
| * Adapts the drop element to the right element for the drop target. |
| * |
| * @param dropElement |
| * @return |
| */ |
| Object adapt(Object dropElement); |
| } |
| |
| } |