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/**
* Copyright (c) 2011 CEA LIST.
* 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:
* Gregoire Dupe (Mia-Software) - Bug 345730 - Deleting an element in the model breaks the table
*/
package org.eclipse.papyrus.emf.facet.util.emf.core.internal.command;
import java.util.ArrayList;
import java.util.Collection;
import org.eclipse.emf.common.command.Command;
import org.eclipse.emf.common.util.EList;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.resource.Resource;
import org.eclipse.papyrus.emf.facet.util.emf.core.command.ILockableUndoCommand;
/**
* This command has to be used to set the content of a resource
*/
public class SetResourceContentCommand implements Command, ILockableUndoCommand {
private EList<EObject> oldContent = null;
private Collection<EObject> newContent = null;
private Resource resource;
private boolean enableUndo = true;
/**
* @param resource the resource of which we want to set the content.
* @param content a list of EObject to set as the content of the resource
*/
public SetResourceContentCommand(final Resource resource, final Collection<EObject> content) {
this.resource = resource;
this.newContent = content;
}
public boolean canExecute() {
return true;
}
public void execute() {
this.oldContent = this.resource.getContents();
this.resource.getContents().clear();
this.resource.getContents().addAll(this.newContent);
}
public boolean canUndo() {
boolean canUndo = (this.enableUndo && (this.oldContent != null));
return canUndo;
}
public void undo() {
this.resource.getContents().clear();
this.resource.getContents().addAll(this.oldContent);
}
public void redo() {
this.resource.getContents().clear();
this.resource.getContents().addAll(this.newContent);
}
public Collection<?> getResult() {
Collection<Resource> result = new ArrayList<Resource>();
result.add(this.resource);
return result;
}
public Collection<?> getAffectedObjects() {
Collection<Object> affectedObjects = new ArrayList<Object>();
affectedObjects.add(this.resource);
affectedObjects.addAll(this.newContent);
affectedObjects.addAll(this.oldContent);
return affectedObjects;
}
public String getLabel() {
//TODO: Must be externalized
return "Set Resource Content"; //$NON-NLS-1$
}
public String getDescription() {
//TODO: Must be externalized
return "This command changes the content of an EMF resource"; //$NON-NLS-1$
}
public void dispose() {
this.oldContent = null;
this.newContent = null;
this.resource = null;
}
public Command chain(final Command command) {
return null;
}
public void enableCanUndo(final boolean enable) {
this.enableUndo = enable;
}
}
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