taverna-design-ui/src/main/java/org/apache/taverna/workbench/design/actions/RemoveDataflowOutputPortAction.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
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* specific language governing permissions and limitations
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package org.apache.taverna.workbench.design.actions;

import static org.apache.taverna.workbench.icons.WorkbenchIcons.deleteIcon;

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

import org.apache.taverna.workbench.edits.CompoundEdit;
import org.apache.taverna.workbench.edits.Edit;
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.RemoveDataLinkEdit;
import org.apache.taverna.workflow.edits.RemoveWorkflowOutputPortEdit;

import org.apache.log4j.Logger;

import org.apache.taverna.scufl2.api.core.DataLink;
import org.apache.taverna.scufl2.api.core.Workflow;
import org.apache.taverna.scufl2.api.port.OutputWorkflowPort;

/**
 * Action for removing an output port from the dataflow.
 * 
 * @author David Withers
 */
@SuppressWarnings("serial")
public class RemoveDataflowOutputPortAction extends DataflowEditAction {
	private static final Logger logger = Logger
			.getLogger(RemoveDataflowOutputPortAction.class);

	private OutputWorkflowPort port;

	public RemoveDataflowOutputPortAction(Workflow dataflow,
			OutputWorkflowPort port, Component component,
			EditManager editManager, SelectionManager selectionManager) {
		super(dataflow, component, editManager, selectionManager);
		this.port = port;
		putValue(SMALL_ICON, deleteIcon);
		putValue(NAME, "Delete workflow output port");
	}

	@Override
	public void actionPerformed(ActionEvent e) {
		try {
			dataflowSelectionModel.removeSelection(port);
			List<DataLink> datalinks = scufl2Tools.datalinksTo(port);
			if (datalinks.isEmpty())
				editManager.doDataflowEdit(dataflow.getParent(),
						new RemoveWorkflowOutputPortEdit(dataflow, port));
			else {
				List<Edit<?>> editList = new ArrayList<>();
				for (DataLink datalink : datalinks)
					editList.add(new RemoveDataLinkEdit(dataflow, datalink));
				editList.add(new RemoveWorkflowOutputPortEdit(dataflow, port));
				editManager.doDataflowEdit(dataflow.getParent(),
						new CompoundEdit(editList));
			}
		} catch (EditException ex) {
			logger.debug("Delete workflow output port failed", ex);
		}
	}
}