taverna-contextual-views-impl/src/main/java/org/apache/taverna/workbench/ui/views/contextualviews/merge/MergeConfigurationAction.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.workbench.ui.views.contextualviews.merge;

import java.awt.event.ActionEvent;
import java.util.List;

import javax.swing.AbstractAction;

import org.apache.taverna.workbench.edits.EditException;
import org.apache.taverna.workbench.edits.EditManager;
import org.apache.taverna.workbench.selection.SelectionManager;
import org.apache.taverna.workflow.edits.ReorderMergePositionsEdit;

import org.apache.log4j.Logger;

import org.apache.taverna.scufl2.api.container.WorkflowBundle;
import org.apache.taverna.scufl2.api.core.DataLink;

/**
 * Configuration action for a Merge. This action changes the order of
 * merge's incoming ports.
 *
 * @author Alex Nenadic
 *
 */
@SuppressWarnings("serial")
class MergeConfigurationAction extends AbstractAction {
	private static Logger logger = Logger
			.getLogger(MergeConfigurationAction.class);

	private final List<DataLink> reorderedDataLinksList;
	private final List<DataLink> datalinks;
	private final EditManager editManager;
	private final SelectionManager selectionManager;

	MergeConfigurationAction(List<DataLink> datalinks,
			List<DataLink> reorderedDataLinksList, EditManager editManager,
			SelectionManager selectionManager) {
		this.datalinks = datalinks;
		this.reorderedDataLinksList = reorderedDataLinksList;
		this.editManager = editManager;
		this.selectionManager = selectionManager;
	}

	@Override
	public void actionPerformed(ActionEvent e) {
		ReorderMergePositionsEdit edit = new ReorderMergePositionsEdit(
				datalinks, reorderedDataLinksList);

		WorkflowBundle bundle = selectionManager.getSelectedWorkflowBundle();

		try {
			editManager.doDataflowEdit(bundle, edit);
		} catch (IllegalStateException ex1) {
			logger.error("Could not configure merge", ex1);
		} catch (EditException ex2) {
			logger.error("Could not configure merge", ex2);
		}
	}
}