size JTable Columns To Fit - Java Swing

Java examples for Swing:JTable Column

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Description

size JTable Columns To Fit

Demo Code

/*/*from w w w.  java 2s  .  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
 */
//package com.java2s;
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);
            }
        }
    }
}

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