groupnodeeditpart.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/GroupNodeEditPart.java,v 1.2 2006/12/30 02:45:04 niegy Exp $
 * $Revision: 1.2 $
 * $Date: 2006/12/30 02:45:04 $
 *
 *==============================================================================
 *
 * Copyright (c) 2001-2006 Primeton Technologies, Ltd.
 * All rights reserved.
 * 
 * Created on 2006-12-6
 *******************************************************************************/


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

import java.util.Iterator;
import java.util.List;

import org.eclipse.draw2d.Figure;
import org.eclipse.draw2d.IFigure;
import org.eclipse.draw2d.geometry.Point;
import org.eclipse.emf.common.notify.Notification;
import org.eclipse.gef.EditPart;
import org.eclipse.gef.EditPolicy;
import org.eclipse.gef.Request;

import com.primeton.studio.gef.core.Node;
import com.primeton.studio.gef.core.CorePackage;
import com.primeton.studio.gef.core.GroupNode;
import com.primeton.studio.gef.core.NodeElement;
import com.primeton.studio.gef.ui.editor.AbstractGraphicalEditor;
import com.primeton.studio.gef.ui.figure.DashdotLineBorder;
import com.primeton.studio.gef.ui.ui.policy.GroupNodeEditPolicy;
import com.primeton.studio.gef.ui.ui.policy.TooltipEditPolicy;

/**
 * 组合图元editpart
 *
 * @author niegy (mailto:[e-mail])
 */
/*
 * 修改历史
 * $Log: GroupNodeEditPart.java,v $
 * Revision 1.2  2006/12/30 02:45:04  niegy
 * 重构代码
 *
 * Revision 1.1  2006/12/08 07:04:32  niegy
 * 重构代码
 * 
 */
public class GroupNodeEditPart extends NodeEditPartEx {

	/**
	 * @param editor
	 */
	public GroupNodeEditPart(AbstractGraphicalEditor editor) {
		super(editor);
		// TODO Auto-generated constructor stub
	}

	/* (non-Javadoc)
	 * @see com.primeton.studio.gef.ui.parts.NodeEditPartEx#createEditPolicies()
	 */
	protected void createEditPolicies() {
		// TODO Auto-generated method stub
		super.createEditPolicies();
		installEditPolicy(TooltipEditPolicy.TOOLTIP_ROLE,null);
		installEditPolicy(EditPolicy.GRAPHICAL_NODE_ROLE, new GroupNodeEditPolicy());
	}

	/* (non-Javadoc)
	 * @see com.primeton.studio.gef.ui.parts.NodeEditPartEx#createFigure()
	 */
	protected IFigure createFigure() {
		// TODO Auto-generated method stub
      Figure fig = new Figure();
      GroupNode groupNode = (GroupNode)getModel();
      fig.setLocation(new Point(groupNode.getLocation().getX(),
    		  groupNode.getLocation().getY()));
      fig.setSize(groupNode.getSize().getWidth(),
    		  groupNode.getSize().getHeight());
      fig.setBorder(new DashdotLineBorder());
      return fig;
	}

	/* (non-Javadoc)
	 * @see com.primeton.studio.gef.ui.parts.NodeEditPartEx#notifyChanged(org.eclipse.emf.common.notify.Notification)
	 */
	public void notifyChanged(Notification notification) {
		// TODO Auto-generated method stub
		super.notifyChanged(notification);
        int type = notification.getEventType();
        int featureId = notification.getFeatureID(CorePackage.class);
        switch(type) {
        case Notification.SET:
            switch(featureId) {
            case CorePackage.LOCATION__X:
            case CorePackage.LOCATION__Y:
            case CorePackage.NODE_ELEMENT__LOCATION:
            case CorePackage.NODE_ELEMENT__SIZE:
                refreshVisuals();
                break;
            }
        }
	}

	public EditPart getTargetEditPart(Request request)
	{
		if("selection" != request.getType())
			return super.getTargetEditPart(request);
		EditPart editpart = getParent();
		if(editpart != null && (editpart instanceof GroupNodeEditPart))
			return editpart.getTargetEditPart(request);
		else
			return this;
	 }	 

	public void performRequest(Request req) {
		if (req.getType().equals(REQ_OPEN))
			handleOpenRequest();
	}
	    protected void handleOpenRequest() {
	        GroupNode groupNode = (GroupNode)getModel();
//	        if (groupNode.isIconMode())
//	            groupNode.expand();
//	        else
//	            groupNode.shrink();
	    }  
}