001    /*
002      Copyright (C) 2002-2003 Laurent Martelli <laurent@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    */
018    
019    package org.objectweb.jac.ide.diagrams;
020    
021    import CH.ifa.draw.framework.DrawingEditor;
022    import CH.ifa.draw.framework.Figure;
023    import CH.ifa.draw.standard.AbstractTool;
024    import org.objectweb.jac.aspects.gui.DisplayContext;
025    import java.awt.event.MouseEvent;
026    
027    public abstract class AbstractActionTool extends AbstractTool {
028    
029       protected DisplayContext context;
030       Class figureClass;
031    
032       /**
033        * @param drawingEditor the editor the tool is attached to
034        * @param context the display context
035        * @param figureClass the type of figures the action applies to
036        */
037       public AbstractActionTool(DrawingEditor drawingEditor,
038                                 DisplayContext context,
039                                 Class figureClass) {
040          super(drawingEditor);
041          this.context = context;
042          this.figureClass = figureClass;
043       }
044    
045       /**
046        * Add the touched figure to the selection an invoke action
047        * @see #action
048        */
049       public void mouseDown(MouseEvent e, int x, int y) {
050          Figure target = drawing().findFigure(x, y);
051          if (target != null && figureClass.isAssignableFrom(target.getClass())) {
052             view().addToSelection(target);
053             action(target);
054          }
055       }
056       
057       public void mouseUp(MouseEvent e, int x, int y) {
058          editor().toolDone();
059       }
060    
061       public abstract void action(Figure figure);
062    
063       public boolean isActive() {
064          // The AbstractTool implementation seems to always return false
065          // because isUsable()==false
066          return editor().tool() == this;
067       }
068    }
069