ChangeDynamicsCommand.java

/**
 * 
 */
package org.csstudio.sds.ui.internal.commands;

import org.csstudio.sds.model.DynamicsDescriptor;
import org.csstudio.sds.model.WidgetProperty;
import org.eclipse.gef.commands.Command;

/**
 * Command that changes the {@link DynamicsDescriptor} of a
 * {@link WidgetProperty}.
 * 
 * @author Sven Wende
 * 
 */
public class ChangeDynamicsCommand extends Command {
	private WidgetProperty property;
	private DynamicsDescriptor oldValue;
	private DynamicsDescriptor newValue;

	public ChangeDynamicsCommand(WidgetProperty property, DynamicsDescriptor newValue) {
		assert property != null;
		this.property = property;
		this.newValue = newValue;
	}

	@Override
	public void execute() {
		oldValue = property.getDynamicsDescriptor();
		property.setDynamicsDescriptor(newValue);
	}

	@Override
	public void undo() {
		property.setDynamicsDescriptor(oldValue);
	}

}