org.pentaho.reporting.libraries.designtime.swing.FormattingTableCellRenderer.java Source code

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Here is the source code for org.pentaho.reporting.libraries.designtime.swing.FormattingTableCellRenderer.java

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/*!
* This program is free software; you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
* Foundation.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
* or from the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* 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 Lesser General Public License for more details.
*
* Copyright (c) 2002-2017 Hitachi Vantara..  All rights reserved.
*/

package org.pentaho.reporting.libraries.designtime.swing;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import javax.swing.*;
import javax.swing.table.DefaultTableCellRenderer;
import java.awt.*;
import java.text.Format;

public class FormattingTableCellRenderer extends DefaultTableCellRenderer {
    private static final Log logger = LogFactory.getLog(FormattingTableCellRenderer.class);
    private Format format;

    public FormattingTableCellRenderer(final Format format) {
        if (format == null) {
            throw new NullPointerException();
        }
        this.format = format;
    }

    /**
     * Returns the default table cell renderer.
     * <p/>
     * During a printing operation, this method will be called with <code>isSelected</code> and <code>hasFocus</code>
     * values of <code>false</code> to prevent selection and focus from appearing in the printed output. To do other
     * customization based on whether or not the table is being printed, check the return value from {@link
     * javax.swing.JComponent#isPaintingForPrint()}.
     *
     * @param table      the <code>JTable</code>
     * @param value      the value to assign to the cell at <code>[row, column]</code>
     * @param isSelected true if cell is selected
     * @param hasFocus   true if cell has focus
     * @param row        the row of the cell to render
     * @param column     the column of the cell to render
     * @return the default table cell renderer
     * @see javax.swing.JComponent#isPaintingForPrint()
     */
    public Component getTableCellRendererComponent(final JTable table, final Object value, final boolean isSelected,
            final boolean hasFocus, final int row, final int column) {
        if (value != null) {
            try {
                final String formattedValue = format.format(value);
                return super.getTableCellRendererComponent(table, formattedValue, isSelected, hasFocus, row,
                        column);
            } catch (Exception e) {
                // ignore, user error
                logger.debug("Unable to format value " + value, e);
            }
        }
        return super.getTableCellRendererComponent(table, value, isSelected, hasFocus, row, column);
    }
}