xref: /trunk/main/xmlsecurity/tools/uno/DomToTreeModelAdapter.java (revision 3309286857f19787ae62bd793a98b5af4edd2ad3)

/**************************************************************
 *
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 *
 *************************************************************/



package com.sun.star.xml.security.uno;

import org.w3c.dom.Document;
import javax.swing.event.TreeModelListener;
import javax.swing.event.TreeModelEvent;
import javax.swing.tree.TreePath;
import java.util.Enumeration;
import java.util.Vector;

/*
 * This adapter converts the current Document (a DOM) into
 * a JTree model.
 */
class DomToTreeModelAdapter
    implements javax.swing.tree.TreeModel
{
    private Document m_document;
    private Vector m_listenerList = new Vector();

    public DomToTreeModelAdapter(Document document)
    {
        m_document = document;
    }

    /*
     * Basic TreeModel operations
     */
    public Object  getRoot()
    {
        return new AdapterNode(m_document);
    }

    public boolean isLeaf(Object aNode)
    {
        boolean rc = true;

        /*
         * Determines whether the icon shows up to the left.
         * Return true for any node with no children.
         */
        AdapterNode node = (AdapterNode) aNode;

        if (node.childCount() > 0)
        {
            rc = false;
        }

        return rc;
    }

    public int getChildCount(Object parent)
    {
        AdapterNode node = (AdapterNode) parent;
        return node.childCount();
    }

    public Object getChild(Object parent, int index)
    {
        AdapterNode node = (AdapterNode) parent;
        return node.child(index);
    }

    public int getIndexOfChild(Object parent, Object child)
    {
        AdapterNode node = (AdapterNode) parent;
        return node.index((AdapterNode) child);
    }

    public void valueForPathChanged(TreePath path, Object newValue)
    {
        /*
         * Null. We won't be making changes in the GUI
         * If we did, we would ensure the new value was really new,
         * adjust the model, and then fire a TreeNodesChanged event.
         */
    }

    public void addTreeModelListener(TreeModelListener listener)
    {
        if ( listener != null
            && ! m_listenerList.contains( listener ) )
        {
            m_listenerList.addElement( listener );
        }
    }

    public void removeTreeModelListener(TreeModelListener listener)
    {
        if ( listener != null )
        {
            m_listenerList.removeElement( listener );
        }
    }

    public void fireTreeNodesChanged( TreeModelEvent e )
    {
        Enumeration listeners = m_listenerList.elements();
        while ( listeners.hasMoreElements() )
        {
            TreeModelListener listener =
            (TreeModelListener) listeners.nextElement();
            listener.treeNodesChanged( e );
        }
    }

    public void fireTreeNodesInserted( TreeModelEvent e )
    {
        Enumeration listeners = m_listenerList.elements();
        while ( listeners.hasMoreElements() )
        {
            TreeModelListener listener =
            (TreeModelListener) listeners.nextElement();
            listener.treeNodesInserted( e );
        }
    }

    public void fireTreeNodesRemoved( TreeModelEvent e )
    {
        Enumeration listeners = m_listenerList.elements();
        while ( listeners.hasMoreElements() )
        {
            TreeModelListener listener =
            (TreeModelListener) listeners.nextElement();
            listener.treeNodesRemoved( e );
        }
    }

    public void fireTreeStructureChanged( TreeModelEvent e )
    {
        Enumeration listeners = m_listenerList.elements();
        while ( listeners.hasMoreElements() )
        {
            TreeModelListener listener =
            (TreeModelListener) listeners.nextElement();
            listener.treeStructureChanged( e );
        }
    }
}