enteraction.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/action/EnterAction.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 2006-11-29
 *******************************************************************************/


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

import org.eclipse.ui.IEditorPart;

import com.primeton.studio.gef.core.NodeElement;
import com.primeton.studio.gef.core.TNodeType;
import com.primeton.studio.gef.ui.Constants;

/**
 * TODO 此处填写 class 信息
 *
 * @author niegy (mailto:[e-mail])
 */
/*
 * 修改历史
 * $Log: EnterAction.java,v $
 * Revision 1.2  2006/12/30 02:45:04  niegy
 * 重构代码
 *
 * Revision 1.1  2006/12/05 05:18:59  niegy
 * 修改模型，增加连线的扩展点
 * 
 */
public class EnterAction extends AttributeAction {

	/**
	 * @param editor
	 * @param title
	 */
	public EnterAction(IEditorPart editor, String title) {
		super(editor, title);
		// TODO Auto-generated constructor stub
	}
	
	protected void init() {
		// TODO Auto-generated method stub
		setId(Constants.ENTER);
	}

	/* (non-Javadoc)
	 * @see org.eclipse.gef.ui.actions.WorkbenchPartAction#calculateEnabled()
	 */
	protected boolean calculateEnabled() {
		// TODO Auto-generated method stub
		boolean flag = ((selecteds != null) && (selecteds.size() == 1));
		boolean isTable = false;
		if(flag){
			NodeElement nodeElement  = (NodeElement)selecteds.get(0);
			if(nodeElement.getNodeType() == TNodeType.ATTRICOLUMN_LITERAL){
				isTable = true;
				child = nodeElement;
				parent = (NodeElement)nodeElement.eContainer();
				nodeType = TNodeType.ATTRICOLUMN_LITERAL;
			}
			else if(nodeElement.getNodeType() == TNodeType.OPERATIONCOLUMN_LITERAL){
				isTable = true;
				child = nodeElement;
				parent = (NodeElement)nodeElement.eContainer();
				nodeType = TNodeType.OPERATIONCOLUMN_LITERAL;
			}
		}
		return (flag && isTable);
	}
}