| //------------------------------------------------------------------------------ |
| // 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.command; |
| |
| import java.util.Collection; |
| import java.util.Collections; |
| import java.util.HashSet; |
| |
| import org.eclipse.emf.common.command.AbstractCommand; |
| import org.eclipse.epf.library.edit.util.SectionList; |
| import org.eclipse.epf.uma.ContentElement; |
| import org.eclipse.epf.uma.Section; |
| |
| /** |
| * This command is used to remove a section from a section list. |
| * |
| * @author Phong Nguyen Le |
| * @since 1.0 |
| */ |
| public class RemoveFromSectionList extends AbstractCommand implements |
| IResourceAwareCommand { |
| |
| private ContentElement contentElement; |
| |
| private SectionList sectionList; |
| |
| private Section section; |
| |
| private Collection modifiedResources; |
| |
| private boolean removed; |
| |
| private int removedObjectIndex = -1; |
| |
| public RemoveFromSectionList(ContentElement contentElement, |
| Section section, SectionList sectionList) { |
| this.contentElement = contentElement; |
| this.sectionList = sectionList; |
| this.section = section; |
| |
| modifiedResources = new HashSet(); |
| } |
| |
| protected boolean prepare() { |
| return true; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see com.ibm.library.edit.command.IResourceAwareCommand#getModifiedResources() |
| */ |
| public Collection getModifiedResources() { |
| if (contentElement.getPresentation().eResource() != null) { |
| modifiedResources.add(contentElement.getPresentation().eResource()); |
| } |
| return modifiedResources; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.emf.common.command.Command#execute() |
| */ |
| public void execute() { |
| |
| redo(); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.emf.common.command.Command#redo() |
| */ |
| public void redo() { |
| if (contentElement == null) |
| return; |
| removedObjectIndex = sectionList.indexOf(section); |
| sectionList.remove(section); |
| removed = true; |
| sectionList.apply(); |
| } |
| |
| public void undo() { |
| if (removed) { |
| if (removedObjectIndex != -1) { |
| sectionList.add(removedObjectIndex, section); |
| } else { |
| sectionList.add(section); |
| } |
| sectionList.apply(); |
| removed = false; |
| } |
| } |
| |
| public Collection getAffectedObjects() { |
| return Collections.singletonList(contentElement); |
| } |
| |
| } |