/**
* Copyright (C) 2001-2017 by RapidMiner and the contributors
*
* Complete list of developers available at our web site:
*
* http://rapidminer.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.Color;
import java.awt.Component;
import java.util.Date;
import javax.swing.BorderFactory;
import javax.swing.JLabel;
import javax.swing.JTable;
import javax.swing.border.Border;
import javax.swing.table.DefaultTableCellRenderer;
import javax.swing.table.TableCellRenderer;
import com.rapidminer.tools.Tools;
/**
* The default table cell renderer for all viewer tables. Provides the correct border and colors.
* Numbers will be formatted with the generic number of fraction digits. It is possible to restrict
* the maximum length of strings shown. This might speed up rendering for very large strings, which
* of course can't be shown completely anyway.
*
* @author Ingo Mierswa, Marco Boeck
*/
public class ColoredTableCellRenderer implements TableCellRenderer {
private static final Border CELL_BORDER = BorderFactory.createEmptyBorder(0, 10, 0, 5);
/** use default Java one for best performance */
private final DefaultTableCellRenderer defaultCellRenderer = new DefaultTableCellRenderer();
private int maximalTextLength = Integer.MAX_VALUE;
private boolean cutOnFirstLineBreak = false;
private int dateFormat = ExtendedJTable.NO_DATE_FORMAT;
public void setColor(Color color) {
defaultCellRenderer.setBackground(color);
}
public void setDateFormat(int dateFormat) {
this.dateFormat = dateFormat;
}
/**
* Use this method to set the maximal text length. Enter Integer.MAX_VALUE to disable text
* cutting (default)
*/
public void setMaximalTextLength(int maxLength) {
this.maximalTextLength = maxLength;
}
/**
* This enables or disables the cutting on the first linebreak of a string. Normally only one
* line is shown, so this might be useful to speed up text rendering.
*/
public void setCutOnFirstLineBreak(boolean enable) {
this.cutOnFirstLineBreak = enable;
}
@Override
public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row,
int column) {
// prepare text
String text = null;
if (value instanceof Number) {
Number number = (Number) value;
double numberValue = number.doubleValue();
text = Tools.formatIntegerIfPossible(numberValue);
} else {
if (value != null) {
if (value instanceof Date) {
switch (dateFormat) {
case ExtendedJTable.DATE_FORMAT:
text = Tools.formatDate((Date) value);
break;
case ExtendedJTable.TIME_FORMAT:
text = Tools.formatTime((Date) value);
break;
case ExtendedJTable.DATE_TIME_FORMAT:
text = Tools.formatDateTime((Date) value);
break;
default:
text = value.toString();
break;
}
} else {
text = value.toString();
// cutting on line
if (cutOnFirstLineBreak) {
int indexOfLineBreak = text.indexOf("\n");
if (indexOfLineBreak > 0) {
text = text.substring(0, indexOfLineBreak);
}
}
// cutting on maximal length
if (text.length() > maximalTextLength) {
text = text.substring(0, maximalTextLength);
}
}
} else {
text = "?";
}
}
// use java renderer to draw text
JLabel l = (JLabel) defaultCellRenderer.getTableCellRendererComponent(table, text, isSelected, hasFocus, row,
column);
l.setBorder(CELL_BORDER);
// highlight hovered row?
if (table instanceof ExtendedJTable) {
ExtendedJTable t = (ExtendedJTable) table;
if (t.isRowHighlighting()) {
if (t.isRowHighlighted(row)) {
t.setLastHighlightedRow(row);
l.setBackground(SwingTools.darkenColor(l.getBackground(), 0.95f));
}
}
}
return l;
}
}