rplotterviewpanel.java

knime 是一个非常优秀的数据挖掘平台

/* 
 * -------------------------------------------------------------------
 * Copyright, 2003 - 2006
 * University of Konstanz, Germany.
 * Chair for Bioinformatics and Information Mining
 * Prof. Dr. Michael R. Berthold
 *
 * This file is part of the R integration plugin for KNIME.
 *
 * The R integration plugin 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., 51 Franklin St., Fifth Floor, Boston, MA 02110-1301, USA.
 * Or contact us: [e-mail].
 * -------------------------------------------------------------------
 * 
 */
package org.knime.ext.r.node;

import java.awt.GridLayout;
import java.awt.Image;

import javax.swing.ImageIcon;
import javax.swing.JLabel;
import javax.swing.JPanel;

/**
 * Displays the R result image.
 * 
 * @author Thomas Gabriel, University of Konstanz
 */
final class RPlotterViewPanel extends JPanel {

    private final JLabel m_label;
    
    /**
     * Creates a new panel with an empty label.
     * @param image The content to show.
     */
    protected RPlotterViewPanel(final Image image) {
        m_label = new JLabel("<No Plot>");
        super.setLayout(new GridLayout(1, 1));
        super.add(m_label);
        update(image);
    }

    /**
     * Creates a new panel with an empty label.
     */
    protected RPlotterViewPanel() {
        m_label = new JLabel("<No Plot>");
        super.add(m_label);
    }

    /**
     * @param image The new image or null to display.
     */
    protected void update(final Image image) {
        if (image == null) {
            m_label.setIcon(null);
            m_label.setText("<No Plot>");
        } else {
            m_label.setText(null);
            m_label.setIcon(new ImageIcon(image));
        }
        super.repaint();
    }


}