/home/ythoma/docs/math2mat/svn/wp1/framework/m2mGUI/src/m2m/frontend/dynamicview/model/Connection.java

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package m2m.frontend.dynamicview.model;

import java.beans.PropertyChangeListener;
import java.beans.PropertyChangeSupport;
import java.util.Vector;

import org.eclipse.draw2d.Graphics;
import org.eclipse.draw2d.geometry.Dimension;

public class Connection
{
    public static final String VISIBLE_CONNECTION = "VisibleConnection";
    public static final String BENDPOINT_POSITION = "BendPointPosition";
    public static final String ROUTE_CONNECTION   = "RouteConnection";
    
    
    private PropertyChangeSupport listeners;
        private int lineStyle = Graphics.LINE_SOLID;
        private Node source;
        private Node target;
    private boolean visible = true;
    private boolean mustBeRoute = true;
    private Vector<BendPoint> bendPoints = new Vector<BendPoint>();
        
    
        public Connection(Node source, Node target) 
        {       
                this.source = source;
                this.target = target;
                this.source.addConnection(this);
                this.target.addConnection(this);
                this.listeners = new PropertyChangeSupport(this);
        }       
        
                
        public int getLineStyle() 
        {
                return lineStyle;
        }
        
        
        public Node getSource() 
        {
                return source;
        }
        
        
        public Node getTarget() 
        {
                return target;
        }
        
        
    public boolean getVisible() 
    {
        return this.visible;
    }
    
    
    public void setVisible(boolean visible) 
    {
                boolean odlValue = this.visible;
                this.visible = visible;
                firePropertyChange(Connection.VISIBLE_CONNECTION, odlValue, visible);
    }  
    
    
    public boolean getMustBeRoute() 
    {
        return this.mustBeRoute;
    }
    
    
    public void setMustBeRoute(boolean val) 
    {
        this.mustBeRoute = val;
    }
    
    
    public Vector<BendPoint> getBendPoints() 
    {
        return bendPoints;
    }
       
    
    public void addBendPoint(BendPoint bp)
    {
        bendPoints.add(bp.getIndex(), bp);              
        firePropertyChange(Connection.BENDPOINT_POSITION, null, bendPoints);
        firePropertyChange(Schema.PROPERTY, null, bendPoints);
    }
    
    
    public void removeBendPoint(int index)
    {
        bendPoints.remove(index);               
        firePropertyChange(Connection.BENDPOINT_POSITION, null, bendPoints);
        firePropertyChange(Schema.PROPERTY, null, bendPoints);
    }
    
    
    public void removeAllBendPoint()
    {
        bendPoints.removeAll(bendPoints);               
        firePropertyChange(Connection.BENDPOINT_POSITION, null, bendPoints);
    }    
    
    public void modifyBendPoint(int index, Dimension d1, Dimension d2)
    {
        BendPoint oldBp = bendPoints.get(index);
        BendPoint NewBp = oldBp;
        
        NewBp.setHeight(d1.height, d2.height);
        NewBp.setWidth(d1.width, d2.width);

        firePropertyChange(Connection.BENDPOINT_POSITION, null, NewBp);
    }
    
    
    public void route()
    {
        firePropertyChange(Connection.ROUTE_CONNECTION, null, this);
    }
    
    
        protected void firePropertyChange(String property, Object oldValue, Object newValue) 
        {
                if (listeners.hasListeners(property))
                        listeners.firePropertyChange(property, oldValue, newValue);
        }
        
        
    public void addPropertyChangeListener(PropertyChangeListener listener) 
    {
        listeners.addPropertyChangeListener(listener);
        }
          
    
        public void removePropertyChangeListener(PropertyChangeListener listener) 
        {
            listeners.removePropertyChangeListener(listener);
        }
        
        
        public void refreshConnection()
        {
                firePropertyChange(Connection.BENDPOINT_POSITION, null, bendPoints);
                firePropertyChange(Schema.PROPERTY, null, bendPoints);
        }       
}