taverna-edits-api/src/main/java/org/apache/taverna/workflow/edits/RemoveActivityEdit.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.taverna.workflow.edits;

import org.apache.taverna.scufl2.api.activity.Activity;
import org.apache.taverna.scufl2.api.core.Processor;
import org.apache.taverna.scufl2.api.profiles.ProcessorBinding;

/**
 * Remove an Activity from a Processor.
 *
 * @author alanrw
 */
public class RemoveActivityEdit extends AbstractEdit<Processor> {
	private Activity activityToRemove;
	private ProcessorBinding removedProcessorBinding;

	public RemoveActivityEdit(Processor processor, Activity activity) {
		super(processor);
		this.activityToRemove = activity;
	}

	@Override
	protected void doEditAction(Processor processor) {
		for (ProcessorBinding binding : scufl2Tools
				.processorBindingsToActivity(activityToRemove))
			if (binding.getBoundProcessor().equals(processor)) {
				removedProcessorBinding = binding;
				removedProcessorBinding.setParent(null);
			}
	}

	@Override
	protected void undoEditAction(Processor processor) {
		removedProcessorBinding.setParent(activityToRemove.getParent());
	}
}