uadds and pdates some graphics and menu items

plugins/com.minres.scviewer.database/src/com/minres/scviewer/database/DirectionType.java

@@ -0,0 +1,34 @@
+/*******************************************************************************
+ * Copyright (c) 2020 MINRES Technologies GmbH and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     MINRES Technologies GmbH - initial API and implementation
+ *******************************************************************************/
+package com.minres.scviewer.database;
+
+/**
+ * The Enum DirectionType.
+ */
+public enum DirectionType {
+	IMPLICIT,
+	INPUT,
+	OUTPUT,
+	INOUT,
+	BUFFER,
+	LINKAGE;
+
+	public String toString() {
+		switch(this) {
+		case INPUT:   return "I";
+		case OUTPUT:  return "O";
+		case INOUT:   return "IO";
+		case BUFFER:  return "B";
+		case LINKAGE: return "L";
+		default:      return "";
+		}
+	}
+}

plugins/com.minres.scviewer.database/src/com/minres/scviewer/database/EmptyWaveform.java

@@ -123,4 +123,9 @@ public class EmptyWaveform implements IWaveform {
 		return 0;
 	}
 
+	@Override
+	public DirectionType getDirection() {
+		return DirectionType.IMPLICIT;
+	}
+
 }

plugins/com.minres.scviewer.database/src/com/minres/scviewer/database/IWaveform.java

@@ -11,7 +11,7 @@
 package com.minres.scviewer.database;
 
 
-// TODO: Auto-generated Javadoc
+
 /**
  * The Interface IWaveform.
  *
@@ -19,6 +19,7 @@ package com.minres.scviewer.database;
  */
 public interface IWaveform extends IHierNode {
 
+	public DirectionType getDirection();
 	/**
 	 * Gets the id.
 	 *