Java JTable Column pack(JTable table, boolean packColumns, boolean packRows, int padding)

Description

pack

License

Open Source License

Declaration

public static void pack(JTable table, boolean packColumns,
            boolean packRows, int padding) 

Method Source Code

//package com.java2s;
/*/* w w  w  . ja v  a  2  s  .  c om*/
 * Copyright (C) 2007, University of Manchester
 *
 * Modifications to the initial code base are copyright of their
 * respective authors, or their employers as appropriate.  Authorship
 * of the modifications may be determined from the ChangeLog placed at
 * the end of this file.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.

 * This library 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
 * Lesser General Public License for more details.

 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */

import javax.swing.*;
import javax.swing.table.JTableHeader;
import javax.swing.table.TableCellRenderer;
import javax.swing.table.TableColumn;
import java.awt.*;
import java.util.Enumeration;

public class Main {
    public static void pack(JTable table, boolean packColumns,
            boolean packRows, int padding) {
        final Enumeration<TableColumn> cols = table.getColumnModel()
                .getColumns();

        int[] rowHeights = new int[table.getRowCount()];

        while (cols.hasMoreElements()) {
            TableColumn tc = cols.nextElement();
            final int colIndex = tc.getModelIndex(); // not sure about this

            int width = 0;

            if (packColumns) {
                // Get width of column header
                TableCellRenderer renderer = tc.getHeaderRenderer();
                if (renderer == null) {
                    final JTableHeader header = table.getTableHeader();
                    if (header != null) {
                        renderer = header.getDefaultRenderer();
                    }
                }

                if (renderer != null) {
                    Component comp = renderer
                            .getTableCellRendererComponent(table,
                                    tc.getHeaderValue(), false, false, 0, 0);
                    width = comp.getPreferredSize().width;
                }
            }

            // Check data
            for (int row = 0; row < table.getRowCount(); row++) {
                TableCellRenderer renderer = table.getCellRenderer(row,
                        colIndex);
                Component comp = renderer.getTableCellRendererComponent(
                        table, table.getValueAt(row, colIndex), false,
                        false, row, colIndex);
                final Dimension prefSize = comp.getPreferredSize();
                if (packRows) {
                    rowHeights[row] = Math.max(rowHeights[row],
                            prefSize.height);
                }
                if (packColumns) {
                    width = Math.max(width, prefSize.width);
                }
            }

            if (packColumns) {
                tc.setPreferredWidth(width);
            }
        }

        if (packRows) {
            for (int row = 0; row < rowHeights.length; row++) {
                table.setRowHeight(row, rowHeights[row] + (2 * padding));
            }
        }
    }
}

Related

1. isNotDuplicateKeyOfTable(String text, TableModel model, int column)
2. layoutColumns(JTable p_Table, boolean p_OnlyVisibleRows)
3. loadToTableModel(String fileName, Object[] columns)
4. makeTablePanel(int rows, int cols, int mainColumn, JComponent components[])
5. newTable(String name, Object[][] rowData, Object[] columnNames)
6. ponerAncho(TableColumn loColumn, int plAncho)
7. removeColumn(int index, JTable table)
8. selectByTyping(JTable table, javax.swing.JTextField textfield, int column)
9. setColumnOrder(final JTable table, final String positions)