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 * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common
 * Development and Distribution License("CDDL") (collectively, the
 * "License"). You may not use this file except in compliance with the
 * License. You can obtain a copy of the License at
 * http://www.netbeans.org/cddl-gplv2.html
 * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the
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 * Notice in each file and include the License file at
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 * particular file as subject to the "Classpath" exception as provided
 * by Sun in the GPL Version 2 section of the License file that
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package org.netbeans.lib.profiler.ui.components.table;

import java.awt.*;
import javax.swing.*;
import javax.swing.table.TableCellRenderer;

 * This class is used for rendering the JTable header. It also holds information about current sorting column and sorting order.
 * The column header is rendered by the JButton using the appropriate icon.
 * @author Jiri Sedlacek
00053 public class CustomSortableHeaderRenderer implements TableCellRenderer {
    //~ Instance fields ----------------------------------------------------------------------------------------------------------

    private ImageIcon ascIcon;
    private ImageIcon descIcon;
    private boolean sortOrder = SortableTableModel.SORT_ORDER_DESC;

     * The column which is currently being pressed.
     * The button has to be pressed programatically because the mouse events are not delivered to the JButton from the table header.
00064     private int pressedColumn = -1;

     * The column which currently defines the sorting order. Only this column header contains the appropriate icon.
00069     private int sortingColumn = -1;

    //~ Constructors -------------------------------------------------------------------------------------------------------------

     * Creates a new instance of CustomSortableHeaderRenderer
     * @param asc The icon representing ascending sort order.
     * @param desc The icon representing descending sort order.
00078     public CustomSortableHeaderRenderer(ImageIcon asc, ImageIcon desc) {
        ascIcon = asc;
        descIcon = desc;

    //~ Methods ------------------------------------------------------------------------------------------------------------------

    public void setPressedColumn(int column) {
        pressedColumn = column;

    public int getPressedColumn() {
        return pressedColumn;

    public void setSortingColumn(int column) {
        sortingColumn = column;

    public int getSortingColumn() {
        return sortingColumn;

    public void setSortingOrder(boolean order) {
        sortOrder = order;

    public boolean getSortingOrder() {
        return sortOrder;

    public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row,
                                                   int column) {
        TableCellRenderer tableCellRenderer = table.getTableHeader().getDefaultRenderer();
        Component c = tableCellRenderer.getTableCellRendererComponent(table, value, isSelected, hasFocus, row, column);

        if (c instanceof JLabel) {
            JLabel l = (JLabel) c;

            if (column == sortingColumn) { // only for sorting column the icon is displayed
                l.setIcon((sortOrder == SortableTableModel.SORT_ORDER_ASC) ? ascIcon : descIcon);
            } else {


        return c;

    public void reverseSortingOrder() {
        sortOrder = !sortOrder;

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