copyofconnectionpart.java

GEF初学者可以用来对照的小例子

/*
 * Created on 2005-1-25
 *
 * TODO To change the template for this generated file go to
 * Window - Preferences - Java - Code Style - Code Templates
 */
package com.example.parts;

import org.eclipse.draw2d.BendpointConnectionRouter;
import org.eclipse.draw2d.IFigure;
import org.eclipse.draw2d.PolygonDecoration;
import org.eclipse.draw2d.PolylineConnection;
import org.eclipse.gef.EditPart;
import org.eclipse.gef.EditPolicy;
import org.eclipse.gef.editparts.AbstractConnectionEditPart;
import org.eclipse.gef.editpolicies.ConnectionEndpointEditPolicy;

import com.example.policies.ConnectionEditPolicy;

/**
 * @author zhanghao
 *
 */
public class CopyOfConnectionPart extends AbstractConnectionEditPart {

    protected IFigure createFigure() {
        PolylineConnection conn = new PolylineConnection();
        conn.setTargetDecoration(new PolygonDecoration());
        conn.setConnectionRouter(new BendpointConnectionRouter());
       
        return conn;
    }

    protected void createEditPolicies() {
        installEditPolicy(EditPolicy.COMPONENT_ROLE, new ConnectionEditPolicy());
        installEditPolicy(EditPolicy.CONNECTION_ENDPOINTS_ROLE, new ConnectionEndpointEditPolicy());
    }

    protected void refreshVisuals() {
    }

    public void setSelected(int value) {
        super.setSelected(value);
        if (value != EditPart.SELECTED_NONE)
            ((PolylineConnection) getFigure()).setLineWidth(2);
        else
            ((PolylineConnection) getFigure()).setLineWidth(1);
    }
}