/**
* Copyright 2005 JBoss Inc
*
* Licensed 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.drools.eclipse.flow.ruleflow.core;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import org.drools.eclipse.flow.common.editor.core.ElementConnection;
import org.drools.eclipse.flow.common.editor.core.ElementWrapper;
import org.eclipse.draw2d.geometry.Point;
import org.jbpm.workflow.core.Connection;
import org.jbpm.workflow.core.Node;
import org.jbpm.workflow.core.impl.ConnectionImpl;
/**
* Wrapper for a connection.
*
* @author <a href="mailto:kris_verlaenen@hotmail.com">Kris Verlaenen</a>
*/
public class ConnectionWrapper extends ElementConnection {
private static final long serialVersionUID = 510l;
private ConnectionImpl connection;
public ConnectionWrapper() {
}
public Connection getConnection() {
return connection;
}
public void localSetConnection(Connection connection) {
this.connection = (ConnectionImpl) connection;
}
public void disconnect() {
super.disconnect();
connection.terminate();
connection = null;
}
public void connect(ElementWrapper source, ElementWrapper target) {
connection = new ConnectionImpl(
((NodeWrapper) source).getNode(), Node.CONNECTION_DEFAULT_TYPE,
((NodeWrapper) target).getNode(), Node.CONNECTION_DEFAULT_TYPE);
super.connect(source, target);
}
protected List<Point> internalGetBendpoints() {
return (List<Point>) stringToBendpoints((String) connection.getMetaData("bendpoints"));
}
protected void internalSetBendpoints(List<Point> bendpoints) {
connection.setMetaData("bendpoints", bendpointsToString(bendpoints));
}
private String bendpointsToString(List<Point> bendpoints) {
if (bendpoints == null) {
return null;
}
String result = "[";
for (Iterator<Point> iterator = bendpoints.iterator(); iterator.hasNext(); ) {
Point point = iterator.next();
result += point.x + "," + point.y + (iterator.hasNext() ? ";" : "");
}
result += "]";
return result;
}
private List<Point> stringToBendpoints(String s) {
List<Point> result = new ArrayList<Point>();
if (s == null) {
return result;
}
s = s.substring(1, s.length() - 1);
String[] bendpoints = s.split(";");
for (String bendpoint: bendpoints) {
bendpoint = bendpoint.trim();
if (bendpoint.length() != 0) {
String[] xy = bendpoint.split(",");
if (xy.length != 2) {
throw new IllegalArgumentException(
"Unexpected bendpoint: " + bendpoint + " for bendpoints " + bendpoints +
" - nb points = " + xy.length);
}
try {
result.add(new Point(new Integer(xy[0]), new Integer(xy[1])));
} catch (NumberFormatException e) {
throw new IllegalArgumentException("Could not parse bendpoint " + bendpoint, e);
}
}
}
return result;
}
}