/*
* RapidMiner
*
* Copyright (C) 2001-2008 by Rapid-I and the contributors
*
* Complete list of developers available at our web site:
*
* http://rapid-i.com
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see http://www.gnu.org/licenses/.
*/
package com.rapidminer.gui.tools;
import java.awt.Component;
import javax.swing.BorderFactory;
import javax.swing.DefaultListCellRenderer;
import javax.swing.JLabel;
import javax.swing.JList;
import com.rapidminer.operator.Operator;
import com.rapidminer.operator.OperatorCreationException;
import com.rapidminer.operator.OperatorDescription;
import com.rapidminer.tools.LogService;
import com.rapidminer.tools.Tools;
/**
* A renderer for operator list cells that displays the operator's icon and name.
*
* @author Helge Homburg, Ingo Mierswa
* @version $Id: OperatorListCellRenderer.java,v 1.5 2008/05/09 19:22:59 ingomierswa Exp $
*/
public class OperatorListCellRenderer extends DefaultListCellRenderer {
private static final long serialVersionUID = -4236587258844548010L;
private boolean coloredBackground;
public OperatorListCellRenderer(boolean coloredBackground) {
this.coloredBackground = coloredBackground;
}
public Component getListCellRendererComponent(JList list,
Object value,
int index,
boolean isSelected,
boolean cellHasFocus) {
OperatorDescription operatorDescription = (OperatorDescription)value;
Component component = super.getListCellRendererComponent(list, operatorDescription.getName(), index, isSelected, cellHasFocus);
JLabel label = (JLabel)component;
try {
label.setIcon(operatorDescription.getIcon());
} catch (Exception e) {
// error --> no icon
}
if (coloredBackground && (!isSelected) && (index % 2 != 0))
label.setBackground(SwingTools.LIGHTEST_BLUE);
label.setBorder(BorderFactory.createEmptyBorder(4,4,4,4));
Operator operator = null;
try {
operator = operatorDescription.createOperatorInstance();
} catch (OperatorCreationException e) {
// tries to create operator
LogService.getGlobal().log("Problem during creation of operator instance: " + e.getMessage(), LogService.WARNING);
}
String descriptionString = operatorDescription.getLongDescriptionHTML();
if (descriptionString == null)
descriptionString = operatorDescription.getShortDescription();
StringBuffer toolTipText = new StringBuffer("<b>Description:</b> " + descriptionString);
if (operator != null) {
toolTipText.append(Tools.getLineSeparator() + "<b>Input:</b> " + SwingTools.getStringFromClassArray(operator.getInputClasses()));
toolTipText.append(Tools.getLineSeparator() + "<b>Output:</b> " + SwingTools.getStringFromClassArray(operator.getOutputClasses()));
}
label.setToolTipText(SwingTools.transformToolTipText(toolTipText.toString()));
return label;
}
}