operationeditpart.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/OperationEditPart.java,v 1.3 2006/12/05 05:18:59 niegy Exp $
 * $Revision: 1.3 $
 * $Date: 2006/12/05 05:18:59 $
 *
 *==============================================================================
 *
 * Copyright (c) 2001-2006 Primeton Technologies, Ltd.
 * All rights reserved.
 * 
 * Created on 2006-11-21
 *******************************************************************************/


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

import org.eclipse.draw2d.IFigure;
import org.eclipse.draw2d.Label;
import org.eclipse.gef.EditPolicy;
import org.eclipse.gef.commands.Command;
import org.eclipse.gef.editpolicies.DirectEditPolicy;
import org.eclipse.gef.requests.DirectEditRequest;

import com.primeton.studio.gef.ui.GefUiPluginImages;
import com.primeton.studio.gef.ui.commands.ChangeNameCommand;
import com.primeton.studio.gef.ui.editor.AbstractGraphicalEditor;
import com.primeton.studio.gef.ui.figure.SelectableLabel;

/**
 * TODO 此处填写 class 信息
 *
 * @author niegy (mailto:[e-mail])
 */
/*
 * 修改历史
 * $Log: OperationEditPart.java,v $
 * Revision 1.3  2006/12/05 05:18:59  niegy
 * 修改模型，增加连线的扩展点
 *
 * Revision 1.2  2006/11/23 02:42:21  niegy
 * table
 *
 * Revision 1.1  2006/11/22 07:07:38  niegy
 * 增加table
 * 
 */
public class OperationEditPart extends BaseEditPart {

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

	/* (non-Javadoc)
	 * @see com.primeton.studio.gef.ui.parts.BaseEditPart#createDirectEditPolicy()
	 */
	
	protected DirectEditPolicy createDirectEditPolicy() {
		// TODO Auto-generated method stub
		return new DirectEditPolicy() {
			protected Command getDirectEditCommand(DirectEditRequest request) {
				return new ChangeNameCommand(
						getCastedModel(), (String)request.getCellEditor().getValue());
			}
			protected void showCurrentEditValue(DirectEditRequest request) {
				((Label)getFigure()).setText((String)request.getCellEditor().getValue());
				getFigure().getUpdateManager().performUpdate();
			}
		};
	}

	/* (non-Javadoc)
	 * @see com.primeton.studio.gef.ui.parts.BaseEditPart#createFigure()
	 */
	
	protected IFigure createFigure() {
		// TODO Auto-generated method stub
		SelectableLabel fig = new SelectableLabel();
		fig.setIcon(GefUiPluginImages.METHOD_PUBLIC);
		return fig;
	}

	String getDirectEditText() {
		return getCastedModel().getName();
	}

	/* (non-Javadoc)
	 * @see com.primeton.studio.gef.ui.parts.NodeEditPartEx#refreshVisuals()
	 */
	
	protected void refreshVisuals() {
		// TODO Auto-generated method stub
		Label fig = (Label)getFigure();
		String params = ""; //$NON-NLS-1$
//		for (Iterator iter = getOperation().getEParameters().iterator(); iter.hasNext();) {
//			EParameter param = (EParameter)iter.next();
//			if (params.length() > 0)
//				params += ", "; //$NON-NLS-1$
//			params += param.getEType().getName();
//		}
		String suffix = " : void";
//		if (getOperation().getEType() != null) {
//			suffix = " : " + getOperation().getEType().getName();
//		}
		/*
		 * @TODO:Pratik do you need to show the exceptions that a method throws?
		 */
		fig.setText(getCastedModel().getName() + "(" + params + ")" + suffix);
	}
	
	/* (non-Javadoc)
	 * @see com.primeton.studio.gef.ui.parts.BaseEditPart#createEditPolicies()
	 */
	protected void createEditPolicies() {
		// TODO Auto-generated method stub
		super.createEditPolicies();
		installEditPolicy(EditPolicy.GRAPHICAL_NODE_ROLE,null);
	}
}