modelcreationfactory.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/editor/ModelCreationFactory.java,v 1.5 2006/12/30 02:45:04 niegy Exp $
 * $Revision: 1.5 $
 * $Date: 2006/12/30 02:45:04 $
 *
 *==============================================================================
 *
 * Copyright (c) 2001-2006 Primeton Technologies, Ltd.
 * All rights reserved.
 * 
 * Created on 2006-11-15
 *******************************************************************************/


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

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

import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.util.EcoreUtil;
import org.eclipse.gef.requests.CreationFactory;

import com.primeton.studio.gef.core.Connection;
import com.primeton.studio.gef.core.Element;
import com.primeton.studio.gef.core.GroupNode;
import com.primeton.studio.gef.core.NodeElement;
import com.primeton.studio.gef.core.Note;
import com.primeton.studio.gef.ui.parts.ExtenderReader;

/**
 * TODO 此处填写 class 信息
 *
 * @author niegy (mailto:[e-mail])
 */
/*
 * 修改历史
 * $Log: ModelCreationFactory.java,v $
 * Revision 1.5  2006/12/30 02:45:04  niegy
 * 重构代码
 *
 * Revision 1.4  2006/12/29 09:07:22  niegy
 * 重构代码
 *
 * Revision 1.3  2006/12/08 07:04:32  niegy
 * 重构代码
 *
 * Revision 1.2  2006/12/05 05:18:59  niegy
 * 修改模型，增加连线的扩展点
 *
 * Revision 1.1  2006/11/17 03:15:13  niegy
 * create
 * 
 */
public abstract class ModelCreationFactory implements CreationFactory,Cloneable {
    protected Object target;
    protected String pluginId;
    public ModelCreationFactory() {
    }
    
    public ModelCreationFactory(ModelCreationFactory factory) {
    	target = factory.getTarget();
    	pluginId = factory.getPluginId();
    }
      
    
    public void setTarget(Object obj){
    	target = obj;
    }
    public void setPluginId(String id){
    	pluginId = id;
    }
    
    public String getPluginId(){
    	return pluginId;
    }
    
    public Object getTarget(){
    	return target;
    }
    
	/* (non-Javadoc)
	 * @see org.eclipse.gef.requests.CreationFactory#getNewObject()
	 */
	public Object getNewObject() {
		// TODO Auto-generated method stub
		List nodeList = ExtenderReader.getInstance().getPaletteEntryList(pluginId);
		List lineList = ExtenderReader.getInstance().getPaletteLineList(pluginId);
		if(target instanceof Note ||
				target instanceof GroupNode)
			return EcoreUtil.copy((EObject)target);
		else if(target instanceof NodeElement)
			return getNewObject(nodeList,true);
		else
			return getNewObject(lineList,false);
	}

	private Object getNewObject(List list,boolean isNode){
		for (Iterator iter = list.iterator(); iter.hasNext();) {
        	try{
				List element = (List) iter.next();
				String name = (String)element.get(1);
				Object targetObj = element.get(2);
				if(target.getClass().equals(targetObj.getClass())){
					if(isNode){
						Object newObj = EcoreUtil.copy((EObject)targetObj);
						setNodeInfo(newObj,name);
						return newObj;
					}
					else{
						boolean equ = ((Connection)target).getLineType() == ((Connection)targetObj).getLineType();
						if(equ){
							Object newObj = EcoreUtil.copy((EObject)targetObj);
							setNodeInfo(newObj,name);
							return newObj;
						}
					}
				}	

        	}
        	catch(Exception e){
        		e.printStackTrace();
        	}
		} 
		return target;
	}
	
    private void setNodeInfo(Object node,String name){
    	if(node instanceof Element){
	        ((Element)node).setName(name); 
	        ((Element)node).setId(name);
    	}
    }
    

	/* (non-Javadoc)
	 * @see org.eclipse.gef.requests.CreationFactory#getObjectType()
	 */
	public Object getObjectType() {
		// TODO Auto-generated method stub
		 return target.getClass();
	}

	
	abstract public Object clone() throws CloneNotSupportedException;
}