Java JTable Header sizeColumnsToFit(JTable table, boolean useHeader, boolean useContent)

Description

size Columns To Fit

License

Open Source License

Declaration

public static void sizeColumnsToFit(JTable table, boolean useHeader, boolean useContent) 

Method Source Code

//package com.java2s;
/*// ww  w .  j  a va2 s .  c  o  m
 * Copyright (C) 2002-2006 Stefan Stiller
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program 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 for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

import java.awt.Component;
import java.awt.Dimension;
import javax.swing.table.TableColumn;
import javax.swing.table.TableCellRenderer;
import javax.swing.JTable;

public class Main {
    public static void sizeColumnsToFit(JTable table, boolean useHeader, boolean useContent) {
        if (!useHeader && !useContent)
            return;
        for (int i = 0; i < table.getColumnCount(); i++) {
            TableColumn column = table.getColumnModel().getColumn(i);
            int columnIndex = column.getModelIndex();
            int preferredWidth = 0;
            if (useContent) {
                for (int row = 0; row < table.getModel().getRowCount(); row++) {
                    Object value = table.getModel().getValueAt(row, columnIndex);
                    TableCellRenderer renderer = table.getCellRenderer(row, columnIndex);
                    Component component = renderer.getTableCellRendererComponent(table, value, false, false, row,
                            columnIndex);
                    Dimension preferredSize = component.getPreferredSize();
                    if (preferredSize.width > preferredWidth)
                        preferredWidth = preferredSize.width;
                }
            }
            if (useHeader) {
                Object value = column.getHeaderValue();
                TableCellRenderer renderer = column.getHeaderRenderer();
                if (renderer == null)
                    renderer = table.getTableHeader().getDefaultRenderer();
                Component component = renderer.getTableCellRendererComponent(table, value, false, false, 0,
                        columnIndex);
                if (component.getPreferredSize().width > preferredWidth)
                    preferredWidth = component.getPreferredSize().width;
            }
            if (preferredWidth > 300)
                preferredWidth = 300;
            if (preferredWidth > 0) {
                column.setPreferredWidth(preferredWidth + 20);
            }
        }
    }
}

Related

1. setHeaderIcon(JTable table, final int column, final ImageIcon icon)
2. setOptimalHeaderWidth(int col)
3. setPressedColumn(JTableHeader tableHeader, int columnModelIndex)
4. setTableHeaderCellRenderer(TableColumn tableCol)
5. setupAsRowHeader(final JTable table)
6. tableHeaders(JTable jtable)