/* ******************************************************************************
* Copyright (c) 2006-2012 XMind Ltd. and others.
*
* This file is a part of XMind 3. XMind releases 3 and
* above are dual-licensed under the Eclipse Public License (EPL),
* which is available at http://www.eclipse.org/legal/epl-v10.html
* and the GNU Lesser General Public License (LGPL),
* which is available at http://www.gnu.org/licenses/lgpl.html
* See http://www.xmind.net/license.html for details.
*
* Contributors:
* XMind Ltd. - initial API and implementation
*******************************************************************************/
package org.xmind.ui.commands;
import org.eclipse.core.runtime.Assert;
import org.xmind.core.ITopic;
import org.xmind.core.IWorkbook;
import org.xmind.gef.command.CreateCommand;
public class CloneTopicCommand extends CreateCommand {
private IWorkbook workbook;
private ITopic source;
private ITopic topic;
public CloneTopicCommand(IWorkbook workbook, ITopic source) {
Assert.isNotNull(workbook);
Assert.isNotNull(source);
this.workbook = workbook;
this.source = source;
}
protected boolean canCreate() {
if (topic == null) {
topic = workbook.cloneTopic(source);
}
return topic != null;
}
protected Object create() {
canCreate();
return topic;
}
}