bundles/org.simantics.diagram/src/org/simantics/diagram/connection/ConnectionSegmentType.java

   1 /*******************************************************************************
   2  * Copyright (c) 2007, 2010 Association for Decentralized Information Management
   3  * in Industry THTH ry.
   4  * All rights reserved. This program and the accompanying materials
   5  * are made available under the terms of the Eclipse Public License v1.0
   6  * which accompanies this distribution, and is available at
   7  * http://www.eclipse.org/legal/epl-v10.html
   8  *
   9  * Contributors:
  10  *     VTT Technical Research Centre of Finland - initial API and implementation
  11  *******************************************************************************/
  12 package org.simantics.diagram.connection;
  13
  14 /**
  15  * @author Tuukka Lehtonen
  16  */
  17 public enum ConnectionSegmentType {
  18     CONNECTOR_TO_CONNECTOR,
  19     CONNECTOR_TO_BRANCH,
  20     BRANCH_TO_BRANCH;
  21
  22     public static ConnectionSegmentType toSegmentType(ConnectionSegmentEnd first, ConnectionSegmentEnd second) {
  23         ConnectionSegmentEnd other = null;
  24         if (first == ConnectionSegmentEnd.CONNECTOR) {
  25             other = second;
  26         } else if (second == ConnectionSegmentEnd.CONNECTOR) {
  27             other = first;
  28         } else {
  29             return ConnectionSegmentType.BRANCH_TO_BRANCH;
  30         }
  31         switch (other) {
  32             case CONNECTOR:
  33                 return ConnectionSegmentType.CONNECTOR_TO_CONNECTOR;
  34             case BRANCH:
  35                 return ConnectionSegmentType.CONNECTOR_TO_BRANCH;
  36             default:
  37                 throw new Error("unexpected connection segment end: " + other);
  38         }
  39     }
  40 }