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Java example source code file (TreeTableModelAdapter.java)

This example Java source code file (TreeTableModelAdapter.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

abstracttablemodel, class, event, gui, jtable, jtree, object, runnable, string, swing, table, tree, treeexpansionlistener, treemodellistener, treepath, treetablemodeladapter

The TreeTableModelAdapter.java Java example source code

/*
 * Copyright (c) 2001, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code 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 General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 *
 */

package sun.jvm.hotspot.ui.treetable;

import javax.swing.JTree;
import javax.swing.SwingUtilities;
import javax.swing.table.AbstractTableModel;
import javax.swing.tree.TreePath;
import javax.swing.event.TreeExpansionEvent;
import javax.swing.event.TreeExpansionListener;
import javax.swing.event.TreeModelEvent;
import javax.swing.event.TreeModelListener;

/**
 * This is a wrapper class takes a TreeTableModel and implements
 * the table model interface. The implementation is trivial, with
 * all of the event dispatching support provided by the superclass:
 * the AbstractTableModel.
 *
 *
 * @author Philip Milne
 * @author Scott Violet
 */
public class TreeTableModelAdapter extends AbstractTableModel
{
    JTree tree;
    TreeTableModel treeTableModel;

    public TreeTableModelAdapter(TreeTableModel treeTableModel, JTree tree) {
        this.tree = tree;
        this.treeTableModel = treeTableModel;

        tree.addTreeExpansionListener(new TreeExpansionListener() {
            // Don't use fireTableRowsInserted() here; the selection model
            // would get updated twice.
            public void treeExpanded(TreeExpansionEvent event) {
              fireTableDataChanged();
            }
            public void treeCollapsed(TreeExpansionEvent event) {
              fireTableDataChanged();
            }
        });

        // Install a TreeModelListener that can update the table when
        // tree changes. We use delayedFireTableDataChanged as we can
        // not be guaranteed the tree will have finished processing
        // the event before us.
        treeTableModel.addTreeModelListener(new TreeModelListener() {
            public void treeNodesChanged(TreeModelEvent e) {
                delayedFireTableDataChanged();
            }

            public void treeNodesInserted(TreeModelEvent e) {
                delayedFireTableDataChanged();
            }

            public void treeNodesRemoved(TreeModelEvent e) {
                delayedFireTableDataChanged();
            }

            public void treeStructureChanged(TreeModelEvent e) {
                delayedFireTableDataChanged();
            }
        });
    }

    // Wrappers, implementing TableModel interface.

    public int getColumnCount() {
        return treeTableModel.getColumnCount();
    }

    public String getColumnName(int column) {
        return treeTableModel.getColumnName(column);
    }

    public Class getColumnClass(int column) {
        return treeTableModel.getColumnClass(column);
    }

    public int getRowCount() {
        return tree.getRowCount();
    }

    protected Object nodeForRow(int row) {
        TreePath treePath = tree.getPathForRow(row);
        return treePath.getLastPathComponent();
    }

    public Object getValueAt(int row, int column) {
        return treeTableModel.getValueAt(nodeForRow(row), column);
    }

    public boolean isCellEditable(int row, int column) {
         return treeTableModel.isCellEditable(nodeForRow(row), column);
    }

    public void setValueAt(Object value, int row, int column) {
        treeTableModel.setValueAt(value, nodeForRow(row), column);
    }

    /**
     * Invokes fireTableDataChanged after all the pending events have been
     * processed. SwingUtilities.invokeLater is used to handle this.
     */
    protected void delayedFireTableDataChanged() {
        SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                fireTableDataChanged();
            }
        });
    }
}

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