nodeeditpartex.java

对eclipse gef进行封装,可以生成图形化编辑器

/*******************************************************************************
 * $Header: /cvsroot/EOS6/work_dir/niegy/com.primeton.studio.gef.ui/src/com/primeton/studio/gef/ui/parts/NodeEditPartEx.java,v 1.9 2006/12/30 02:45:04 niegy Exp $
 * $Revision: 1.9 $
 * $Date: 2006/12/30 02:45:04 $
 *
 *==============================================================================
 *
 * Copyright (c) 2001-2006 Primeton Technologies, Ltd.
 * All rights reserved. 
 * 
 * Created on 2006-9-28
 *******************************************************************************/


package com.primeton.studio.gef.ui.parts;

import java.util.List;

import org.eclipse.core.resources.IProject;
import org.eclipse.draw2d.ChopboxAnchor;
import org.eclipse.draw2d.ConnectionAnchor;
import org.eclipse.draw2d.IFigure;
import org.eclipse.draw2d.Label;
import org.eclipse.draw2d.geometry.Point;
import org.eclipse.draw2d.geometry.Rectangle;
import org.eclipse.emf.common.notify.Adapter;
import org.eclipse.emf.common.notify.Notification;
import org.eclipse.emf.common.notify.Notifier;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.gef.ConnectionEditPart;
import org.eclipse.gef.EditPolicy;
import org.eclipse.gef.GraphicalEditPart;
import org.eclipse.gef.NodeEditPart;
import org.eclipse.gef.Request;
import org.eclipse.gef.commands.Command;
import org.eclipse.gef.editparts.AbstractGraphicalEditPart;
import org.eclipse.gef.editpolicies.GraphicalNodeEditPolicy;
import org.eclipse.gef.requests.CreateConnectionRequest;
import org.eclipse.gef.requests.ReconnectRequest;
import org.eclipse.jface.internal.text.link.contentassist.HTMLTextPresenter;
import org.eclipse.jface.text.DefaultInformationControl;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.FocusAdapter;
import org.eclipse.swt.events.FocusEvent;
import org.eclipse.swt.widgets.Display;
import org.eclipse.ui.views.properties.IPropertySource;

import com.primeton.studio.gef.core.Connection;
import com.primeton.studio.gef.core.CorePackage;
import com.primeton.studio.gef.core.NodeElement;
import com.primeton.studio.gef.core.NodeElementLabel;
import com.primeton.studio.gef.ui.commands.ConnectionCreateCommand;
import com.primeton.studio.gef.ui.commands.ConnectionReconnectCommand;
import com.primeton.studio.gef.ui.editor.AbstractGraphicalEditor;
import com.primeton.studio.gef.ui.properties.NodePropertySource;
import com.primeton.studio.gef.ui.ui.policy.NodeComponentEditPolicy;
import com.primeton.studio.gef.ui.ui.policy.TooltipEditPolicy;

/**
 * TODO此处填写 class 信息
 *
 * @author niegy (mailto:[e-mail])
 */
/*
 * 修改历史
 * $Log: NodeEditPartEx.java,v $
 * Revision 1.9  2006/12/30 02:45:04  niegy
 * 重构代码
 *
 * Revision 1.8  2006/12/20 02:57:07  niegy
 * 重构代码
 *
 * Revision 1.7  2006/12/16 09:04:42  niegy
 * 重构代码
 *
 * Revision 1.6  2006/12/12 08:26:39  niegy
 * 重构代码,实现一般图元的编辑框
 *
 * Revision 1.5  2006/12/05 05:18:59  niegy
 * 修改模型，增加连线的扩展点
 *
 * Revision 1.4  2006/11/23 02:42:21  niegy
 * table
 *
 * Revision 1.3  2006/11/22 07:07:38  niegy
 * 增加table
 *
 * Revision 1.2  2006/11/18 12:13:53  niegy
 * 增加容器模型
 *
 * Revision 1.1  2006/11/17 03:15:13  niegy
 * create
 * 
 */
public class NodeEditPartEx extends AbstractGraphicalEditPart implements
        Adapter, NodeEditPart {
    private ConnectionAnchor anchor;
    private Notifier target;
    private IProject project;
    
    private boolean isShowTipOnTop=false;
    protected AbstractGraphicalEditor editor;
    public NodeEditPartEx(AbstractGraphicalEditor editor){
    	this.editor = editor;
    }
    
    /**
     * Upon activation, attach to the model element as a property change listener.
     */
    public void activate() {
        if (!isActive()) {
            hookIntoModel(getCastedModel());
            super.activate();
        }
    }
    
    protected void hookIntoModel(EObject model) {
        if(model != null) {
            model.eAdapters().add(this);
        }
    }
    
    protected void unhookFromModel(EObject model) {
        if(model != null) {
            model.eAdapters().remove(this);
        }
    }
    
    /* (non-Javadoc)
     * @see org.eclipse.gef.editparts.AbstractEditPart#createEditPolicies()
     */
    protected void createEditPolicies() {
        // allow removal of the associated model element
        installEditPolicy(EditPolicy.COMPONENT_ROLE, new NodeComponentEditPolicy());
        installEditPolicy(TooltipEditPolicy.TOOLTIP_ROLE,new TooltipEditPolicy());
        // allow the creation of connections and 
        // and the reconnection of connections between Shape instances
        installEditPolicy(EditPolicy.GRAPHICAL_NODE_ROLE, new GraphicalNodeEditPolicy() {
            /* (non-Javadoc)
             * @see org.eclipse.gef.editpolicies.GraphicalNodeEditPolicy#getConnectionCompleteCommand(org.eclipse.gef.requests.CreateConnectionRequest)
             */
            protected Command getConnectionCompleteCommand(CreateConnectionRequest request) {
                ConnectionCreateCommand cmd 
                = (ConnectionCreateCommand) request.getStartCommand();
                cmd.setTarget((NodeElement) getHost().getModel());
                return cmd;
            }
            /* (non-Javadoc)
             * @see org.eclipse.gef.editpolicies.GraphicalNodeEditPolicy#getConnectionCreateCommand(org.eclipse.gef.requests.CreateConnectionRequest)
             */
            protected Command getConnectionCreateCommand(CreateConnectionRequest request) {
                NodeElement source = (NodeElement) getHost().getModel();
//                Boolean style = ((Boolean) request.getNewObjectType());
                ConnectionCreateCommand cmd = 
                    new ConnectionCreateCommand(source,request,editor);
//                Connection connection = (Connection)request.getNewObject();//ExtenderReader.getInstance().createConnection(pluginId);
//                cmd.setConnection(connection);
                request.setStartCommand(cmd);
                return cmd;
            }
            /* (non-Javadoc)
             * @see org.eclipse.gef.editpolicies.GraphicalNodeEditPolicy#getReconnectSourceCommand(org.eclipse.gef.requests.ReconnectRequest)
             */
            protected Command getReconnectSourceCommand(ReconnectRequest request) {
                Connection conn = (Connection) request.getConnectionEditPart().getModel();
                NodeElement newSource = (NodeElement) getHost().getModel();
                ConnectionReconnectCommand cmd = new ConnectionReconnectCommand(conn);
                cmd.setNewSource(newSource);
                return cmd;
            }
            /* (non-Javadoc)
             * @see org.eclipse.gef.editpolicies.GraphicalNodeEditPolicy#getReconnectTargetCommand(org.eclipse.gef.requests.ReconnectRequest)
             */
            protected Command getReconnectTargetCommand(ReconnectRequest request) {
                Connection conn = (Connection) request.getConnectionEditPart().getModel();
                NodeElement newTarget = (NodeElement) getHost().getModel();
                ConnectionReconnectCommand cmd = new ConnectionReconnectCommand(conn);
                cmd.setNewTarget(newTarget);
                return cmd;
            }
        });
//      installEditPolicy(EditPolicy.SELECTION_FEEDBACK_ROLE, new NodeSelectionHandlesEditPolicy());
    }
    
    /*(non-Javadoc)
     * @see org.eclipse.gef.editparts.AbstractGraphicalEditPart#createFigure()
     */
    protected IFigure createFigure() {
        IFigure f = createFigureForModel();
//        f.setOpaque(true); // non-transparent figure
//        f.setBackgroundColor(ColorConstants.green);
        return f;
    }
    
    
       protected IFigure createFigureForModel() {
            IFigure fig = null;  
            fig = new Label("asdfa");
            return fig;
        
        }
       
    /* (non-Javadoc)
     * @see org.eclipse.gef.EditPart#performRequest(org.eclipse.gef.Request)
     */
    public void performRequest(Request req) {
        // TODO Auto-generated method stub
        NodeElement element = (NodeElement)getCastedModel();
        if(req.getType().equals(REQ_DIRECT_EDIT)){
            Object model=getModel();
            if(model instanceof NodeElement){
                NodeElement nodeElement=(NodeElement)model;
                org.eclipse.swt.graphics.Point p=
                    new org.eclipse.swt.graphics.Point(
                            nodeElement.getLocation().getX()+nodeElement.getSize().getWidth()+5,
                            nodeElement.getLocation().getY()+nodeElement.getSize().getHeight()+5);
                
                showToolTipOnTop(p);
            }
        }      
      
        super.performRequest(req);