/* $Id: FigLink.java 18534 2010-07-19 14:53:25Z bobtarling $
*****************************************************************************
* Copyright (c) 2009 Contributors - see below
* 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:
* mvw
*****************************************************************************
*
* Some portions of this file was previously release using the BSD License:
*/
// Copyright (c) 1996-2009 The Regents of the University of California. All
// Rights Reserved. Permission to use, copy, modify, and distribute this
// software and its documentation without fee, and without a written
// agreement is hereby granted, provided that the above copyright notice
// and this paragraph appear in all copies. This software program and
// documentation are copyrighted by The Regents of the University of
// California. The software program and documentation are supplied "AS
// IS", without any accompanying services from The Regents. The Regents
// does not warrant that the operation of the program will be
// uninterrupted or error-free. The end-user understands that the program
// was developed for research purposes and is advised not to rely
// exclusively on the program for any reason. IN NO EVENT SHALL THE
// UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT,
// SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING LOST PROFITS,
// ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
// THE UNIVERSITY OF CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF
// SUCH DAMAGE. THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY
// WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE
// PROVIDED HEREUNDER IS ON AN "AS IS" BASIS, AND THE UNIVERSITY OF
// CALIFORNIA HAS NO OBLIGATIONS TO PROVIDE MAINTENANCE, SUPPORT,
// UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
package org.argouml.uml.diagram.static_structure.ui;
import org.argouml.model.Model;
import org.argouml.uml.diagram.DiagramSettings;
import org.argouml.uml.diagram.ui.FigEdgeModelElement;
import org.argouml.uml.diagram.ui.FigTextGroup;
import org.argouml.uml.diagram.ui.PathItemPlacement;
import org.tigris.gef.presentation.Fig;
/**
* Class to display graphics for a UML Link in a diagram. <p>
*
* The underlined association name is shown next to the middle of the path.
*
* TODO: Show more notation as described in the standard:
* "A rolename may be shown at each end of the link. An association
* name may be shown near the path. If present, it is underlined
* to indicate an instance. Links do not have instance names,
* they take their identity from the instances that they relate.
* Multiplicity is not shown for links because they are instances.
* Other association adornments (aggregation, composition,
* navigation) may be shown on the link ends."
*/
public class FigLink extends FigEdgeModelElement {
/*
* Text group to contain name & stereotype
*/
private FigTextGroup middleGroup;
private void initialize() {
middleGroup.addFig(getNameFig());
middleGroup.addFig(getStereotypeFig());
addPathItem(middleGroup,
new PathItemPlacement(this, middleGroup, 50, 25));
getNameFig().setUnderline(true);
getFig().setLineColor(LINE_COLOR);
setBetweenNearestPoints(true);
}
/**
* Create a Fig representing a Link
*
* @param element owning UML element
* @param settings render settings
*/
public FigLink(Object element, DiagramSettings settings) {
super(element, settings);
middleGroup = new FigTextGroup(element, settings);
initialize();
}
/*
* Nothing is editable, since a Link takes its identity
* from the Association.
*
* @see org.argouml.uml.diagram.ui.FigEdgeModelElement#canEdit(
* org.tigris.gef.presentation.Fig)
*/
protected boolean canEdit(Fig f) { return false; }
/*
* Listen also to the association, of which the link is an instantiation,
* since we want to update the rendering when
* the association name changes.
*
* @see org.argouml.uml.diagram.ui.FigEdgeModelElement#updateListeners(
* java.lang.Object, java.lang.Object)
*/
protected void updateListeners(Object oldOwner, Object newOwner) {
if (oldOwner != null) {
removeElementListener(oldOwner);
Object oldAssociation = Model.getFacade().getAssociation(oldOwner);
if (oldAssociation != null) {
removeElementListener(oldAssociation);
}
}
if (newOwner != null) {
addElementListener(newOwner,
new String[] {"remove", "name", "association"});
Object newAssociation = Model.getFacade().getAssociation(newOwner);
if (newAssociation != null) {
addElementListener(newAssociation, "name");
}
}
}
/**
* Generate the notation for the modelelement and stuff it into the text Fig
*/
protected void updateNameText() {
if (getOwner() == null) {
return;
}
String nameString = "";
Object association = Model.getFacade().getAssociation(getOwner());
if (association != null) {
nameString = Model.getFacade().getName(association);
if (nameString == null) {
nameString = "";
}
}
getNameFig().setText(nameString);
calcBounds();
setBounds(getBounds());
}
/*
* @see org.argouml.uml.diagram.ui.FigEdgeModelElement#getDestination()
*/
protected Object getDestination() {
if (getOwner() != null) {
return Model.getCommonBehaviorHelper().getDestination(getOwner());
}
return null;
}
/*
* @see org.argouml.uml.diagram.ui.FigEdgeModelElement#getSource()
*/
protected Object getSource() {
if (getOwner() != null) {
return Model.getCommonBehaviorHelper().getSource(getOwner());
}
return null;
}
} /* end class FigLink */