nstree.java

来自「UCS (Ultra Corba Simulator) is one more 」· Java 代码 · 共 245 行

/*
 *        JacORB - a free Java ORB
 *
 *   Copyright (C) 1997-2004 Gerald Brose.
 *
 *   This library is free software; you can redistribute it and/or
 *   modify it under the terms of the GNU Library General Public
 *   License as published by the Free Software Foundation; either
 *   version 2 of the License, or (at your option) any later version.
 *
 *   This library is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *   Library General Public License for more details.
 *
 *   You should have received a copy of the GNU Library General Public
 *   License along with this library; if not, write to the Free
 *   Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

package com.corba.mnq.ns;


import java.awt.*;
import javax.swing.tree.*;
import javax.swing.event.*;
import javax.swing.*;
import org.omg.CosNaming.*;
import org.omg.CosNaming.NamingContextPackage.*;
import org.jacorb.naming.*;


public class NSTree
    extends JTree 
{
    public static final int MAX_BIND = 40;
    private NamingContextExt rootContext;
   // private ContextNode rootNode;
   // private boolean created;
    private org.omg.CORBA.ORB orb;

    public static NSTable nsTable;

    public NSTree(NSTable theTable, 
                  NamingContextExt rootCntxt, 
                  org.omg.CORBA.ORB orb)
    {
	        this.orb = orb;
		DefaultMutableTreeNode root = new DefaultMutableTreeNode("RootContext");
		root.setAllowsChildren(true);
		setModel(new DefaultTreeModel(root,true));
		//created = false;
		nsTable = theTable;
		rootContext = rootCntxt;
		ContextNode cn = new ContextNode(rootContext,(DefaultTreeModel)getModel());
		cn.setNode(root);
		root.setUserObject(cn);	
    }

    /**
     * Bind a new name context and insert it
     */

    public void bind(String name)
	throws NotFound, CannotProceed, InvalidName, AlreadyBound
    {
		TreePath path = null;
		int length = 0;
		try 
		{ 
		    path = getSelectionPath(); 
		    length = path.getPathCount();
		}
		catch (Exception e)
		{
		    JOptionPane.showMessageDialog(this,"Nothing selected",
						  "Selection error",JOptionPane.ERROR_MESSAGE);
		    return;
		}
	
		DefaultMutableTreeNode node = (DefaultMutableTreeNode) getModel().getRoot();
		NamingContextExt context = rootContext;
	
		if (length > 1)
		{
		    for (int i = 1; i < length; i++)
		    {
				node = (DefaultMutableTreeNode)path.getPathComponent(i);
				ContextNode bind = (ContextNode)node.getUserObject();
				context = NamingContextExtHelper.narrow(context.resolve(bind.getName()));
				if( context == null )
				{
				    System.err.println("Naming context narrow failed!");
				}
		    }
		}
		if (node.getAllowsChildren())
		{
		    Name bindname = new Name(name);
		    if( context == null )
			System.err.println("context null ");
	
		    if( bindname.components() == null )
			System.err.println("name is null ");
	
		    context.bind_new_context(bindname.components());
		    update();
		}
		else 
		{
		    JOptionPane.showMessageDialog(this,
	                                          "Please select a naming context",
						  "Selection error", JOptionPane.ERROR_MESSAGE);
		}
    }


    public void bindObject( String name, String ior, boolean isRebind)
	throws NotFound,CannotProceed,InvalidName, AlreadyBound
    {
		TreePath path = null;
		int length = 0;
		try 
		{ 
		    path = getSelectionPath(); 
		    length = path.getPathCount();
		}
		catch (Exception e)
		{
		    JOptionPane.showMessageDialog(this,"Nothing selected",
						  "Selection error",JOptionPane.ERROR_MESSAGE);
		    return;
		}
	
		DefaultMutableTreeNode node = (DefaultMutableTreeNode) getModel().getRoot();
		NamingContextExt context = rootContext;
	
		if (length>1)
		{
		    for (int i = 1;i<length;i++)
		    {
			node = (DefaultMutableTreeNode) path.getPathComponent(i);
			ContextNode bind = (ContextNode) node.getUserObject();
			context = NamingContextExtHelper.narrow( context.resolve( bind.getName()));
			if( context == null )
			{
			    System.err.println("Naming context narrow failed!");
			    System.exit(1);
			}
		    }
		}
		if (node.getAllowsChildren())
		{
		    Name bindname = new Name(name);
		    if( context == null )
			System.err.println("context null ");
	
		    if( bindname.components() == null )
			System.err.println("name is null ");
	                                                   
	            try
	            {                                                   
	                context.bind( bindname.components(), orb.string_to_object( ior ));
	            }
	            catch( AlreadyBound ab )
	            {
	                if (isRebind)
	                    context.rebind( bindname.components(), orb.string_to_object( ior ));
	                else
	                    throw ab;
	            }
		    update();
		}
		else 
		{
		    JOptionPane.showMessageDialog(this,
	                                          "Please select a naming context",
						  "Selection error", JOptionPane.ERROR_MESSAGE);
		}
    }

    /**
     * unbind a context and remove it from this tree
     */
	
    public void unbind()
    {
		DefaultMutableTreeNode node;
		NamingContextExt context = rootContext;
		TreePath path = null;
		int length = 0;
		try 
		{ 
		    path = getSelectionPath(); 
		    length = path.getPathCount();
		    if (length > 1) 
		    {
			for (int i = 1; i < length-1; i++)
			{
			    node = (DefaultMutableTreeNode)path.getPathComponent(i);
			    ContextNode bind = (ContextNode)node.getUserObject();
			    context = NamingContextExtHelper.narrow(context.resolve(bind.getName()));
			}
		    } 
	
		    if (length > 0)
		    {
			node = (DefaultMutableTreeNode)path.getPathComponent(length-1);
			ContextNode binding = (ContextNode)node.getUserObject();
			context.unbind(binding.getName());
			DefaultTreeModel model = (DefaultTreeModel)getModel();
			model.removeNodeFromParent(node);
	                
	                // select the parent node and display its content
	                DefaultMutableTreeNode parent = (DefaultMutableTreeNode)path.getPathComponent(length-2);
	                setSelectionPath(new TreePath(parent.getPath()));
			((ContextNode)parent.getUserObject()).display();
		    }
		}
		catch (Exception e) 
		{
	            e.printStackTrace();
	
		    JOptionPane.showMessageDialog(this,
						  "Nothing selected or invalid selection",
						  "Selection error",
						  JOptionPane.ERROR_MESSAGE);
		}
    }


    /**
     * update the entire tree of contexts
     */
	 
    public synchronized void update()
    {
		DefaultTreeModel model = (DefaultTreeModel)getModel();
		((ContextNode)((DefaultMutableTreeNode)model.getRoot()).getUserObject()).update();
		nsTable.update();
    }
}