001    /*
002      Copyright (C) 2002 Renaud Pawlak <renaud@aopsys.com>
003    
004      This program is free software; you can redistribute it and/or modify
005      it under the terms of the GNU Lesser General Public License as
006      published by the Free Software Foundation; either version 2 of the
007      License, or (at your option) any later version.
008    
009      This program is distributed in the hope that it will be useful,
010      but WITHOUT ANY WARRANTY; without even the implied warranty of
011      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
012      GNU Lesser General Public License for more details.
013    
014      You should have received a copy of the GNU Lesser General Public
015      License along with this program; if not, write to the Free Software
016      Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
017      USA. */
018    
019    package org.objectweb.jac.ide.diagrams;
020    
021    import CH.ifa.draw.figures.ArrowTip;
022    import org.objectweb.jac.ide.RelationLink;
023    import java.awt.Color;
024    import org.objectweb.jac.aspects.gui.DisplayContext;
025    import org.objectweb.jac.core.rtti.CollectionItem;
026    import org.objectweb.jac.core.rtti.ClassRepository;
027    import org.objectweb.jac.aspects.gui.EventHandler;
028    
029    
030    public class RelationLinkFigure extends LinkFigure {
031    
032       public RelationLinkFigure(org.objectweb.jac.ide.LinkFigure figure) {
033          super(figure);
034       }
035       public RelationLinkFigure() {
036       }
037    
038       void setDecorations() {
039          if (linkFig==null) {
040             setStartDecoration(null);
041             setEndDecoration(null);
042             return;
043          }
044          RelationLink link = (RelationLink)linkFig.getLink();
045          switch (link.getOrientation()) {
046             case RelationLink.ORIENTATION_STRAIGHT:
047                setStartDecoration(null);
048                setEndDecoration(new ArrowTip());
049                break;
050             case RelationLink.ORIENTATION_REVERSE:
051                setStartDecoration(new ArrowTip());
052                setEndDecoration(null);
053                break;
054             default:
055                setStartDecoration(null);
056                setEndDecoration(null);
057          }
058          if (link.isAggregation()) {
059             ArrowTip arrow = new ArrowTip(0.50, 15, 28);
060             arrow.setFillColor(Color.white);
061             setStartDecoration(arrow);
062          }
063       }
064    
065       // Selectable interface
066       public void onSelect(DisplayContext context) {
067          CollectionItem coll = ClassRepository.get().getClass(Class.class)
068             .getCollection("links");
069          EventHandler.get().onSelection(
070             context,coll,getSubstance(),null,null);
071       }
072    }