selectionmanager.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/SelectionManager.java,v 1.1 2006/12/12 08:26:39 niegy Exp $
 * $Revision: 1.1 $
 * $Date: 2006/12/12 08:26:39 $
 *
 *==============================================================================
 *
 * Copyright (c) 2001-2006 Primeton Technologies, Ltd.
 * All rights reserved.
 * 
 * Created on 2006-12-12
 *******************************************************************************/


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

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

import org.eclipse.gef.EditPart;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.StructuredSelection;

import com.primeton.studio.gef.ui.parts.DiagramEditPart;
import com.primeton.studio.gef.ui.parts.LabelEditPart;

/**
 * TODO 此处填写 class 信息
 *
 * @author niegy (mailto:[e-mail])
 */
/*
 * 修改历史
 * $Log: SelectionManager.java,v $
 * Revision 1.1  2006/12/12 08:26:39  niegy
 * 重构代码,实现一般图元的编辑框
 * 
 */
public class SelectionManager extends org.eclipse.gef.SelectionManager {

	/* (non-Javadoc)
	 * @see org.eclipse.gef.SelectionManager#setSelection(org.eclipse.jface.viewers.ISelection)
	 */
	public void setSelection(ISelection newSelection) {
		// TODO Auto-generated method stub
		if (!(newSelection instanceof IStructuredSelection))
			return;
		
		List orderedSelection = ((IStructuredSelection)newSelection).toList();
		if(orderedSelection.size()==1)
			super.setSelection(newSelection);
		else{
			List result = new ArrayList();
			for (Iterator iter = orderedSelection.iterator(); iter.hasNext();) {
				EditPart element = (EditPart) iter.next();
				if(!(element instanceof LabelEditPart))
					result.add(element);
			}
			super.setSelection(new StructuredSelection(result));
		}
	}

//	/* (non-Javadoc)
//	 * @see org.eclipse.gef.SelectionManager#appendSelection(org.eclipse.gef.EditPart)
//	 */
////	public void appendSelection(EditPart editpart) {
//		// TODO Auto-generated method stub
//		IStructuredSelection sel = (IStructuredSelection)getSelection();
//		if(sel.size()!=1 && !(sel.getFirstElement() instanceof DiagramEditPart) 
//				&& editpart instanceof LabelEditPart)
//			return;
//		else
//			super.appendSelection(editpart);
//	}
	
	
}